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commit 876d4e1e8298ad1f94d9e9392fc90486755437b4 upstream.
If wakeup event occurred by extcon event, it needs to call
ci_irq again since the first ci_irq calling at extcon notifier
only wakes up controller, but do noop for event handling,
it causes the extcon use case can't work well from low power mode.
Cc: <stable@vger.kernel.org>
Fixes: 3ecb3e09b042 ("usb: chipidea: Use extcon framework for VBUS and ID detect")
Reported-by: Philippe Schenker <philippe.schenker@toradex.com>
Tested-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Link: https://lore.kernel.org/r/20200707060601.31907-2-peter.chen@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 211f08347355cba1f769bbf3355816a12b3ddd55 upstream.
clang static analysis flags this error
c67x00-sched.c:489:55: warning: Use of memory after it is freed [unix.Malloc]
usb_hcd_giveback_urb(c67x00_hcd_to_hcd(c67x00), urb, urbp->status);
^~~~~~~~~~~~
Problem happens in this block of code
c67x00_release_urb(c67x00, urb);
usb_hcd_unlink_urb_from_ep(c67x00_hcd_to_hcd(c67x00), urb);
spin_unlock(&c67x00->lock);
usb_hcd_giveback_urb(c67x00_hcd_to_hcd(c67x00), urb, urbp->status);
In the call to c67x00_release_urb has this freeing of urbp
urbp = urb->hcpriv;
urb->hcpriv = NULL;
list_del(&urbp->hep_node);
kfree(urbp);
And so urbp is freed before usb_hcd_giveback_urb uses it as its 3rd
parameter.
Since all is required is the status, pass the status directly as is
done in c64x00_urb_dequeue
Fixes: e9b29ffc519b ("USB: add Cypress c67x00 OTG controller HCD driver")
Signed-off-by: Tom Rix <trix@redhat.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200708131243.24336-1-trix@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9b7e5208a941e2e491a83eb5fa83d889e888fa2f upstream.
USB MIDI driver has an error recovery mechanism to resubmit the URB in
the delayed timer handler, and this may race with the standard start /
stop operations. Although both start and stop operations themselves
don't race with each other due to the umidi->mutex protection, but
this isn't applied to the timer handler.
For fixing this potential race, the following changes are applied:
- Since the timer handler can't use the mutex, we apply the
umidi->disc_lock protection at each input stream URB submission;
this also needs to change the GFP flag to GFP_ATOMIC
- Add a check of the URB refcount and skip if already submitted
- Move the timer cancel call at disconnection to the beginning of the
procedure; this assures the in-flight timer handler is gone properly
before killing all pending URBs
Reported-by: syzbot+0f4ecfe6a2c322c81728@syzkaller.appspotmail.com
Reported-by: syzbot+5f1d24c49c1d2c427497@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200710160656.16819-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6e8a914ad619042c5f25a4feb663357c4170fd8d upstream.
LINE6 drivers create stream URBs with a fixed pipe without checking
its validity, and this may lead to a kernel WARNING at the submission
when a malformed USB descriptor is passed.
For avoiding the kernel warning, perform the similar sanity checks for
each pipe type at creating a URB.
Reported-by: syzbot+c190f6858a04ea7fbc52@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/s5hv9iv4hq8.wl-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e901b9873876ca30a09253731bd3a6b00c44b5b0 upstream.
This patch adds a new helper function to perform a sanity check of the
given URB to see whether it contains a valid endpoint. It's a light-
weight version of what usb_submit_urb() does, but without the kernel
warning followed by the stack trace, just returns an error code.
Especially for a driver that doesn't parse the descriptor but fills
the URB with the fixed endpoint (e.g. some quirks for non-compliant
devices), this kind of check is preferable at the probe phase before
actually submitting the urb.
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6363d2065cd399cf9d6dc9d08c437f8658831100 upstream.
Neither the trackpad, nor the mouse want input core to generate autorepeat
events for their buttons, so let's reset the bit (as hid-input sets it for
these devices based on the usage vendor code).
Cc: stable@vger.kernel.org
Reported-by: Yariv <oigevald+kernel@gmail.com>
Tested-by: Yariv <oigevald+kernel@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3d3fb3c5be9ce07fa85d8f67fb3922e4613b955b upstream.
Only v3.3-v5.0 have a different CS0 layout.
Controllers before v3.3 use the same layout for every CS.
Fixes: 27c5b17cd1b1 ("mtd: nand: add NAND driver "library" for Broadcom STB NAND controller")
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200522121524.4161539-3-noltari@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0e0bf1ea1147fcf74eab19c2d3c853cc3740a72f upstream.
As the code comments in perf_stat_process_counter() say, we calculate
counter's data every interval, and the display code shows ps->res_stats
avg value. We need to zero the stats for interval mode.
But the current code only zeros the res_stats[0], it doesn't zero the
res_stats[1] and res_stats[2], which are for ena and run of counter.
This patch zeros the whole res_stats[] for interval mode.
Fixes: 51fd2df1e882 ("perf stat: Fix interval output values")
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200409070755.17261-1-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit ef75e14a6c935eec82abac07ab68e388514e39bc ]
This code reads from the array before verifying that "trig" is a valid
index. If the index is wildly out of bounds then reading from an
invalid address could lead to an Oops.
Fixes: a8c66b684efa ("staging: comedi: addi_apci_1500: rewrite the subdevice support functions")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20200709102936.GA20875@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 30517ffeb3bff842e1355cbc32f1959d9dbb5414 ]
Fixed commit moved the assignment of 'req', but did not update a
reference in the DBG() call. Use the argument as it was renamed.
Fixes: 5fb694f96e7c ("usb: gadget: udc: atmel: fix possible oops when unloading module")
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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This reverts commit 652def4c63b99029fe8b898740f97329c26a2fd3.
Eugeniu Rosca writes:
On Thu, Jul 09, 2020 at 09:00:23AM +0200, Eugeniu Rosca wrote:
>After integrating v4.14.186 commit 5410d158ca2a50 ("usb/ehci-platform:
>Set PM runtime as active on resume") into downstream v4.14.x, we started
>to consistently experience below panic [1] on every second s2ram of
>R-Car H3 Salvator-X Renesas reference board.
>
>After some investigations, we concluded the following:
> - the issue does not exist in vanilla v5.8-rc4+
> - [bisecting shows that] the panic on v4.14.186 is caused by the lack
> of v5.6-rc1 commit 987351e1ea7772 ("phy: core: Add consumer device
> link support"). Getting evidence for that is easy. Reverting
> 987351e1ea7772 in vanilla leads to a similar backtrace [2].
>
>Questions:
> - Backporting 987351e1ea7772 ("phy: core: Add consumer device
> link support") to v4.14.187 looks challenging enough, so probably not
> worth it. Anybody to contradict this?
> - Assuming no plans to backport the missing mainline commit to v4.14.x,
> should the following three v4.14.186 commits be reverted on v4.14.x?
> * baef809ea497a4 ("usb/ohci-platform: Fix a warning when hibernating")
> * 9f33eff4958885 ("usb/xhci-plat: Set PM runtime as active on resume")
> * 5410d158ca2a50 ("usb/ehci-platform: Set PM runtime as active on resume")
Signed-off-by: Sasha Levin <sashal@kernel.org>
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This reverts commit 737c975db35b0117fc5c702072ca2df6f2f7eb63.
Eugeniu Rosca writes:
On Thu, Jul 09, 2020 at 09:00:23AM +0200, Eugeniu Rosca wrote:
>After integrating v4.14.186 commit 5410d158ca2a50 ("usb/ehci-platform:
>Set PM runtime as active on resume") into downstream v4.14.x, we started
>to consistently experience below panic [1] on every second s2ram of
>R-Car H3 Salvator-X Renesas reference board.
>
>After some investigations, we concluded the following:
> - the issue does not exist in vanilla v5.8-rc4+
> - [bisecting shows that] the panic on v4.14.186 is caused by the lack
> of v5.6-rc1 commit 987351e1ea7772 ("phy: core: Add consumer device
> link support"). Getting evidence for that is easy. Reverting
> 987351e1ea7772 in vanilla leads to a similar backtrace [2].
>
>Questions:
> - Backporting 987351e1ea7772 ("phy: core: Add consumer device
> link support") to v4.14.187 looks challenging enough, so probably not
> worth it. Anybody to contradict this?
> - Assuming no plans to backport the missing mainline commit to v4.14.x,
> should the following three v4.14.186 commits be reverted on v4.14.x?
> * baef809ea497a4 ("usb/ohci-platform: Fix a warning when hibernating")
> * 9f33eff4958885 ("usb/xhci-plat: Set PM runtime as active on resume")
> * 5410d158ca2a50 ("usb/ehci-platform: Set PM runtime as active on resume")
Signed-off-by: Sasha Levin <sashal@kernel.org>
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This reverts commit 13af14dfadcb95030dc8e2e0cacbffc1990a9772.
Eugeniu Rosca writes:
On Thu, Jul 09, 2020 at 09:00:23AM +0200, Eugeniu Rosca wrote:
>After integrating v4.14.186 commit 5410d158ca2a50 ("usb/ehci-platform:
>Set PM runtime as active on resume") into downstream v4.14.x, we started
>to consistently experience below panic [1] on every second s2ram of
>R-Car H3 Salvator-X Renesas reference board.
>
>After some investigations, we concluded the following:
> - the issue does not exist in vanilla v5.8-rc4+
> - [bisecting shows that] the panic on v4.14.186 is caused by the lack
> of v5.6-rc1 commit 987351e1ea7772 ("phy: core: Add consumer device
> link support"). Getting evidence for that is easy. Reverting
> 987351e1ea7772 in vanilla leads to a similar backtrace [2].
>
>Questions:
> - Backporting 987351e1ea7772 ("phy: core: Add consumer device
> link support") to v4.14.187 looks challenging enough, so probably not
> worth it. Anybody to contradict this?
> - Assuming no plans to backport the missing mainline commit to v4.14.x,
> should the following three v4.14.186 commits be reverted on v4.14.x?
> * baef809ea497a4 ("usb/ohci-platform: Fix a warning when hibernating")
> * 9f33eff4958885 ("usb/xhci-plat: Set PM runtime as active on resume")
> * 5410d158ca2a50 ("usb/ehci-platform: Set PM runtime as active on resume")
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 5f90786b31fb7d1e199a8999d46c4e3aea672e11 ]
The driver can't be loaded automatically because it misses
module alias to be provided. Add corresponding MODULE_DEVICE_TABLE()
call to the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 1ca0fafd73c5268e8fc4b997094b8bb2bfe8deea ]
This essentially reverts commit 721230326891 ("tcp: md5: reject TCP_MD5SIG
or TCP_MD5SIG_EXT on established sockets")
Mathieu reported that many vendors BGP implementations can
actually switch TCP MD5 on established flows.
Quoting Mathieu :
Here is a list of a few network vendors along with their behavior
with respect to TCP MD5:
- Cisco: Allows for password to be changed, but within the hold-down
timer (~180 seconds).
- Juniper: When password is initially set on active connection it will
reset, but after that any subsequent password changes no network
resets.
- Nokia: No notes on if they flap the tcp connection or not.
- Ericsson/RedBack: Allows for 2 password (old/new) to co-exist until
both sides are ok with new passwords.
- Meta-Switch: Expects the password to be set before a connection is
attempted, but no further info on whether they reset the TCP
connection on a change.
- Avaya: Disable the neighbor, then set password, then re-enable.
- Zebos: Would normally allow the change when socket connected.
We can revert my prior change because commit 9424e2e7ad93 ("tcp: md5: fix potential
overestimation of TCP option space") removed the leak of 4 kernel bytes to
the wire that was the main reason for my patch.
While doing my investigations, I found a bug when a MD5 key is changed, leading
to these commits that stable teams want to consider before backporting this revert :
Commit 6a2febec338d ("tcp: md5: add missing memory barriers in tcp_md5_do_add()/tcp_md5_hash_key()")
Commit e6ced831ef11 ("tcp: md5: refine tcp_md5_do_add()/tcp_md5_hash_key() barriers")
Fixes: 721230326891 "tcp: md5: reject TCP_MD5SIG or TCP_MD5SIG_EXT on established sockets"
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit e6ced831ef11a2a06e8d00aad9d4fc05b610bf38 ]
My prior fix went a bit too far, according to Herbert and Mathieu.
Since we accept that concurrent TCP MD5 lookups might see inconsistent
keys, we can use READ_ONCE()/WRITE_ONCE() instead of smp_rmb()/smp_wmb()
Clearing all key->key[] is needed to avoid possible KMSAN reports,
if key->keylen is increased. Since tcp_md5_do_add() is not fast path,
using __GFP_ZERO to clear all struct tcp_md5sig_key is simpler.
data_race() was added in linux-5.8 and will prevent KCSAN reports,
this can safely be removed in stable backports, if data_race() is
not yet backported.
v2: use data_race() both in tcp_md5_hash_key() and tcp_md5_do_add()
Fixes: 6a2febec338d ("tcp: md5: add missing memory barriers in tcp_md5_do_add()/tcp_md5_hash_key()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Marco Elver <elver@google.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 6a2febec338df7e7699a52d00b2e1207dcf65b28 ]
MD5 keys are read with RCU protection, and tcp_md5_do_add()
might update in-place a prior key.
Normally, typical RCU updates would allocate a new piece
of memory. In this case only key->key and key->keylen might
be updated, and we do not care if an incoming packet could
see the old key, the new one, or some intermediate value,
since changing the key on a live flow is known to be problematic
anyway.
We only want to make sure that in the case key->keylen
is changed, cpus in tcp_md5_hash_key() wont try to use
uninitialized data, or crash because key->keylen was
read twice to feed sg_init_one() and ahash_request_set_crypt()
Fixes: 9ea88a153001 ("tcp: md5: check md5 signature without socket lock")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit ce69e563b325f620863830c246a8698ccea52048 ]
syzkaller found its way into setsockopt with TCP_CONGESTION "cdg".
tcp_cdg_init() does a kcalloc to store the gradients. As sk_clone_lock
just copies all the memory, the allocated pointer will be copied as
well, if the app called setsockopt(..., TCP_CONGESTION) on the listener.
If now the socket will be destroyed before the congestion-control
has properly been initialized (through a call to tcp_init_transfer), we
will end up freeing memory that does not belong to that particular
socket, opening the door to a double-free:
[ 11.413102] ==================================================================
[ 11.414181] BUG: KASAN: double-free or invalid-free in tcp_cleanup_congestion_control+0x58/0xd0
[ 11.415329]
[ 11.415560] CPU: 3 PID: 4884 Comm: syz-executor.5 Not tainted 5.8.0-rc2 #80
[ 11.416544] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
[ 11.418148] Call Trace:
[ 11.418534] <IRQ>
[ 11.418834] dump_stack+0x7d/0xb0
[ 11.419297] print_address_description.constprop.0+0x1a/0x210
[ 11.422079] kasan_report_invalid_free+0x51/0x80
[ 11.423433] __kasan_slab_free+0x15e/0x170
[ 11.424761] kfree+0x8c/0x230
[ 11.425157] tcp_cleanup_congestion_control+0x58/0xd0
[ 11.425872] tcp_v4_destroy_sock+0x57/0x5a0
[ 11.426493] inet_csk_destroy_sock+0x153/0x2c0
[ 11.427093] tcp_v4_syn_recv_sock+0xb29/0x1100
[ 11.427731] tcp_get_cookie_sock+0xc3/0x4a0
[ 11.429457] cookie_v4_check+0x13d0/0x2500
[ 11.433189] tcp_v4_do_rcv+0x60e/0x780
[ 11.433727] tcp_v4_rcv+0x2869/0x2e10
[ 11.437143] ip_protocol_deliver_rcu+0x23/0x190
[ 11.437810] ip_local_deliver+0x294/0x350
[ 11.439566] __netif_receive_skb_one_core+0x15d/0x1a0
[ 11.441995] process_backlog+0x1b1/0x6b0
[ 11.443148] net_rx_action+0x37e/0xc40
[ 11.445361] __do_softirq+0x18c/0x61a
[ 11.445881] asm_call_on_stack+0x12/0x20
[ 11.446409] </IRQ>
[ 11.446716] do_softirq_own_stack+0x34/0x40
[ 11.447259] do_softirq.part.0+0x26/0x30
[ 11.447827] __local_bh_enable_ip+0x46/0x50
[ 11.448406] ip_finish_output2+0x60f/0x1bc0
[ 11.450109] __ip_queue_xmit+0x71c/0x1b60
[ 11.451861] __tcp_transmit_skb+0x1727/0x3bb0
[ 11.453789] tcp_rcv_state_process+0x3070/0x4d3a
[ 11.456810] tcp_v4_do_rcv+0x2ad/0x780
[ 11.457995] __release_sock+0x14b/0x2c0
[ 11.458529] release_sock+0x4a/0x170
[ 11.459005] __inet_stream_connect+0x467/0xc80
[ 11.461435] inet_stream_connect+0x4e/0xa0
[ 11.462043] __sys_connect+0x204/0x270
[ 11.465515] __x64_sys_connect+0x6a/0xb0
[ 11.466088] do_syscall_64+0x3e/0x70
[ 11.466617] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 11.467341] RIP: 0033:0x7f56046dc469
[ 11.467844] Code: Bad RIP value.
[ 11.468282] RSP: 002b:00007f5604dccdd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
[ 11.469326] RAX: ffffffffffffffda RBX: 000000000068bf00 RCX: 00007f56046dc469
[ 11.470379] RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000004
[ 11.471311] RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000
[ 11.472286] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 11.473341] R13: 000000000041427c R14: 00007f5604dcd5c0 R15: 0000000000000003
[ 11.474321]
[ 11.474527] Allocated by task 4884:
[ 11.475031] save_stack+0x1b/0x40
[ 11.475548] __kasan_kmalloc.constprop.0+0xc2/0xd0
[ 11.476182] tcp_cdg_init+0xf0/0x150
[ 11.476744] tcp_init_congestion_control+0x9b/0x3a0
[ 11.477435] tcp_set_congestion_control+0x270/0x32f
[ 11.478088] do_tcp_setsockopt.isra.0+0x521/0x1a00
[ 11.478744] __sys_setsockopt+0xff/0x1e0
[ 11.479259] __x64_sys_setsockopt+0xb5/0x150
[ 11.479895] do_syscall_64+0x3e/0x70
[ 11.480395] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 11.481097]
[ 11.481321] Freed by task 4872:
[ 11.481783] save_stack+0x1b/0x40
[ 11.482230] __kasan_slab_free+0x12c/0x170
[ 11.482839] kfree+0x8c/0x230
[ 11.483240] tcp_cleanup_congestion_control+0x58/0xd0
[ 11.483948] tcp_v4_destroy_sock+0x57/0x5a0
[ 11.484502] inet_csk_destroy_sock+0x153/0x2c0
[ 11.485144] tcp_close+0x932/0xfe0
[ 11.485642] inet_release+0xc1/0x1c0
[ 11.486131] __sock_release+0xc0/0x270
[ 11.486697] sock_close+0xc/0x10
[ 11.487145] __fput+0x277/0x780
[ 11.487632] task_work_run+0xeb/0x180
[ 11.488118] __prepare_exit_to_usermode+0x15a/0x160
[ 11.488834] do_syscall_64+0x4a/0x70
[ 11.489326] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Wei Wang fixed a part of these CDG-malloc issues with commit c12014440750
("tcp: memset ca_priv data to 0 properly").
This patch here fixes the listener-scenario: We make sure that listeners
setting the congestion-control through setsockopt won't initialize it
(thus CDG never allocates on listeners). For those who use AF_UNSPEC to
reuse a socket, tcp_disconnect() is changed to cleanup afterwards.
(The issue can be reproduced at least down to v4.4.x.)
Cc: Wei Wang <weiwan@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Fixes: 2b0a8c9eee81 ("tcp: add CDG congestion control")
Signed-off-by: Christoph Paasch <cpaasch@apple.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 1e82a62fec613844da9e558f3493540a5b7a7b67 ]
A potential deadlock can occur during registering or unregistering a
new generic netlink family between the main nl_table_lock and the
cb_lock where each thread wants the lock held by the other, as
demonstrated below.
1) Thread 1 is performing a netlink_bind() operation on a socket. As part
of this call, it will call netlink_lock_table(), incrementing the
nl_table_users count to 1.
2) Thread 2 is registering (or unregistering) a genl_family via the
genl_(un)register_family() API. The cb_lock semaphore will be taken for
writing.
3) Thread 1 will call genl_bind() as part of the bind operation to handle
subscribing to GENL multicast groups at the request of the user. It will
attempt to take the cb_lock semaphore for reading, but it will fail and
be scheduled away, waiting for Thread 2 to finish the write.
4) Thread 2 will call netlink_table_grab() during the (un)registration
call. However, as Thread 1 has incremented nl_table_users, it will not
be able to proceed, and both threads will be stuck waiting for the
other.
genl_bind() is a noop, unless a genl_family implements the mcast_bind()
function to handle setting up family-specific multicast operations. Since
no one in-tree uses this functionality as Cong pointed out, simply removing
the genl_bind() function will remove the possibility for deadlock, as there
is no attempt by Thread 1 above to take the cb_lock semaphore.
Fixes: c380d9a7afff ("genetlink: pass multicast bind/unbind to families")
Suggested-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Johannes Berg <johannes.berg@intel.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 394de110a73395de2ca4516b0de435e91b11b604 ]
The packets from tunnel devices (eg bareudp) may have only
metadata in the dst pointer of skb. Hence a pointer check of
neigh_lookup is needed in dst_neigh_lookup_skb
Kernel crashes when packets from bareudp device is processed in
the kernel neighbour subsytem.
[ 133.384484] BUG: kernel NULL pointer dereference, address: 0000000000000000
[ 133.385240] #PF: supervisor instruction fetch in kernel mode
[ 133.385828] #PF: error_code(0x0010) - not-present page
[ 133.386603] PGD 0 P4D 0
[ 133.386875] Oops: 0010 [#1] SMP PTI
[ 133.387275] CPU: 0 PID: 5045 Comm: ping Tainted: G W 5.8.0-rc2+ #15
[ 133.388052] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
[ 133.391076] RIP: 0010:0x0
[ 133.392401] Code: Bad RIP value.
[ 133.394029] RSP: 0018:ffffb79980003d50 EFLAGS: 00010246
[ 133.396656] RAX: 0000000080000102 RBX: ffff9de2fe0d6600 RCX: ffff9de2fe5e9d00
[ 133.399018] RDX: 0000000000000000 RSI: ffff9de2fe5e9d00 RDI: ffff9de2fc21b400
[ 133.399685] RBP: ffff9de2fe5e9d00 R08: 0000000000000000 R09: 0000000000000000
[ 133.400350] R10: ffff9de2fbc6be22 R11: ffff9de2fe0d6600 R12: ffff9de2fc21b400
[ 133.401010] R13: ffff9de2fe0d6628 R14: 0000000000000001 R15: 0000000000000003
[ 133.401667] FS: 00007fe014918740(0000) GS:ffff9de2fec00000(0000) knlGS:0000000000000000
[ 133.402412] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 133.402948] CR2: ffffffffffffffd6 CR3: 000000003bb72000 CR4: 00000000000006f0
[ 133.403611] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 133.404270] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 133.404933] Call Trace:
[ 133.405169] <IRQ>
[ 133.405367] __neigh_update+0x5a4/0x8f0
[ 133.405734] arp_process+0x294/0x820
[ 133.406076] ? __netif_receive_skb_core+0x866/0xe70
[ 133.406557] arp_rcv+0x129/0x1c0
[ 133.406882] __netif_receive_skb_one_core+0x95/0xb0
[ 133.407340] process_backlog+0xa7/0x150
[ 133.407705] net_rx_action+0x2af/0x420
[ 133.408457] __do_softirq+0xda/0x2a8
[ 133.408813] asm_call_on_stack+0x12/0x20
[ 133.409290] </IRQ>
[ 133.409519] do_softirq_own_stack+0x39/0x50
[ 133.410036] do_softirq+0x50/0x60
[ 133.410401] __local_bh_enable_ip+0x50/0x60
[ 133.410871] ip_finish_output2+0x195/0x530
[ 133.411288] ip_output+0x72/0xf0
[ 133.411673] ? __ip_finish_output+0x1f0/0x1f0
[ 133.412122] ip_send_skb+0x15/0x40
[ 133.412471] raw_sendmsg+0x853/0xab0
[ 133.412855] ? insert_pfn+0xfe/0x270
[ 133.413827] ? vvar_fault+0xec/0x190
[ 133.414772] sock_sendmsg+0x57/0x80
[ 133.415685] __sys_sendto+0xdc/0x160
[ 133.416605] ? syscall_trace_enter+0x1d4/0x2b0
[ 133.417679] ? __audit_syscall_exit+0x1d9/0x280
[ 133.418753] ? __prepare_exit_to_usermode+0x5d/0x1a0
[ 133.419819] __x64_sys_sendto+0x24/0x30
[ 133.420848] do_syscall_64+0x4d/0x90
[ 133.421768] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 133.422833] RIP: 0033:0x7fe013689c03
[ 133.423749] Code: Bad RIP value.
[ 133.424624] RSP: 002b:00007ffc7288f418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 133.425940] RAX: ffffffffffffffda RBX: 000056151fc63720 RCX: 00007fe013689c03
[ 133.427225] RDX: 0000000000000040 RSI: 000056151fc63720 RDI: 0000000000000003
[ 133.428481] RBP: 00007ffc72890b30 R08: 000056151fc60500 R09: 0000000000000010
[ 133.429757] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000040
[ 133.431041] R13: 000056151fc636e0 R14: 000056151fc616bc R15: 0000000000000080
[ 133.432481] Modules linked in: mpls_iptunnel act_mirred act_tunnel_key cls_flower sch_ingress veth mpls_router ip_tunnel bareudp ip6_udp_tunnel udp_tunnel macsec udp_diag inet_diag unix_diag af_packet_diag netlink_diag binfmt_misc xt_MASQUERADE iptable_nat xt_addrtype xt_conntrack nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 br_netfilter bridge stp llc ebtable_filter ebtables overlay ip6table_filter ip6_tables iptable_filter sunrpc ext4 mbcache jbd2 pcspkr i2c_piix4 virtio_balloon joydev ip_tables xfs libcrc32c ata_generic qxl pata_acpi drm_ttm_helper ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm ata_piix libata virtio_net net_failover virtio_console failover virtio_blk i2c_core virtio_pci virtio_ring serio_raw floppy virtio dm_mirror dm_region_hash dm_log dm_mod
[ 133.444045] CR2: 0000000000000000
[ 133.445082] ---[ end trace f4aeee1958fd1638 ]---
[ 133.446236] RIP: 0010:0x0
[ 133.447180] Code: Bad RIP value.
[ 133.448152] RSP: 0018:ffffb79980003d50 EFLAGS: 00010246
[ 133.449363] RAX: 0000000080000102 RBX: ffff9de2fe0d6600 RCX: ffff9de2fe5e9d00
[ 133.450835] RDX: 0000000000000000 RSI: ffff9de2fe5e9d00 RDI: ffff9de2fc21b400
[ 133.452237] RBP: ffff9de2fe5e9d00 R08: 0000000000000000 R09: 0000000000000000
[ 133.453722] R10: ffff9de2fbc6be22 R11: ffff9de2fe0d6600 R12: ffff9de2fc21b400
[ 133.455149] R13: ffff9de2fe0d6628 R14: 0000000000000001 R15: 0000000000000003
[ 133.456520] FS: 00007fe014918740(0000) GS:ffff9de2fec00000(0000) knlGS:0000000000000000
[ 133.458046] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 133.459342] CR2: ffffffffffffffd6 CR3: 000000003bb72000 CR4: 00000000000006f0
[ 133.460782] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 133.462240] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 133.463697] Kernel panic - not syncing: Fatal exception in interrupt
[ 133.465226] Kernel Offset: 0xfa00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 133.467025] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---
Fixes: aaa0c23cb901 ("Fix dst_neigh_lookup/dst_neigh_lookup_skb return value handling bug")
Signed-off-by: Martin Varghese <martin.varghese@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit a9b1110162357689a34992d5c925852948e5b9fd ]
syzbot was to trigger a bug by tricking AF_LLC with
non sensible addr->sllc_arphrd
It seems clear LLC requires an Ethernet device.
Back in commit abf9d537fea2 ("llc: add support for SO_BINDTODEVICE")
Octavian Purdila added possibility for application to use a zero
value for sllc_arphrd, convert it to ARPHRD_ETHER to not cause
regressions on existing applications.
BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:199 [inline]
BUG: KASAN: use-after-free in list_empty include/linux/list.h:268 [inline]
BUG: KASAN: use-after-free in waitqueue_active include/linux/wait.h:126 [inline]
BUG: KASAN: use-after-free in wq_has_sleeper include/linux/wait.h:160 [inline]
BUG: KASAN: use-after-free in skwq_has_sleeper include/net/sock.h:2092 [inline]
BUG: KASAN: use-after-free in sock_def_write_space+0x642/0x670 net/core/sock.c:2813
Read of size 8 at addr ffff88801e0b4078 by task ksoftirqd/3/27
CPU: 3 PID: 27 Comm: ksoftirqd/3 Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x197/0x210 lib/dump_stack.c:118
print_address_description.constprop.0.cold+0xd4/0x30b mm/kasan/report.c:374
__kasan_report.cold+0x1b/0x41 mm/kasan/report.c:506
kasan_report+0x12/0x20 mm/kasan/common.c:639
__asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:135
__read_once_size include/linux/compiler.h:199 [inline]
list_empty include/linux/list.h:268 [inline]
waitqueue_active include/linux/wait.h:126 [inline]
wq_has_sleeper include/linux/wait.h:160 [inline]
skwq_has_sleeper include/net/sock.h:2092 [inline]
sock_def_write_space+0x642/0x670 net/core/sock.c:2813
sock_wfree+0x1e1/0x260 net/core/sock.c:1958
skb_release_head_state+0xeb/0x260 net/core/skbuff.c:652
skb_release_all+0x16/0x60 net/core/skbuff.c:663
__kfree_skb net/core/skbuff.c:679 [inline]
consume_skb net/core/skbuff.c:838 [inline]
consume_skb+0xfb/0x410 net/core/skbuff.c:832
__dev_kfree_skb_any+0xa4/0xd0 net/core/dev.c:2967
dev_kfree_skb_any include/linux/netdevice.h:3650 [inline]
e1000_unmap_and_free_tx_resource.isra.0+0x21b/0x3a0 drivers/net/ethernet/intel/e1000/e1000_main.c:1963
e1000_clean_tx_irq drivers/net/ethernet/intel/e1000/e1000_main.c:3854 [inline]
e1000_clean+0x4cc/0x1d10 drivers/net/ethernet/intel/e1000/e1000_main.c:3796
napi_poll net/core/dev.c:6532 [inline]
net_rx_action+0x508/0x1120 net/core/dev.c:6600
__do_softirq+0x262/0x98c kernel/softirq.c:292
run_ksoftirqd kernel/softirq.c:603 [inline]
run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595
smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165
kthread+0x361/0x430 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Allocated by task 8247:
save_stack+0x23/0x90 mm/kasan/common.c:72
set_track mm/kasan/common.c:80 [inline]
__kasan_kmalloc mm/kasan/common.c:513 [inline]
__kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:486
kasan_slab_alloc+0xf/0x20 mm/kasan/common.c:521
slab_post_alloc_hook mm/slab.h:584 [inline]
slab_alloc mm/slab.c:3320 [inline]
kmem_cache_alloc+0x121/0x710 mm/slab.c:3484
sock_alloc_inode+0x1c/0x1d0 net/socket.c:240
alloc_inode+0x68/0x1e0 fs/inode.c:230
new_inode_pseudo+0x19/0xf0 fs/inode.c:919
sock_alloc+0x41/0x270 net/socket.c:560
__sock_create+0xc2/0x730 net/socket.c:1384
sock_create net/socket.c:1471 [inline]
__sys_socket+0x103/0x220 net/socket.c:1513
__do_sys_socket net/socket.c:1522 [inline]
__se_sys_socket net/socket.c:1520 [inline]
__ia32_sys_socket+0x73/0xb0 net/socket.c:1520
do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
Freed by task 17:
save_stack+0x23/0x90 mm/kasan/common.c:72
set_track mm/kasan/common.c:80 [inline]
kasan_set_free_info mm/kasan/common.c:335 [inline]
__kasan_slab_free+0x102/0x150 mm/kasan/common.c:474
kasan_slab_free+0xe/0x10 mm/kasan/common.c:483
__cache_free mm/slab.c:3426 [inline]
kmem_cache_free+0x86/0x320 mm/slab.c:3694
sock_free_inode+0x20/0x30 net/socket.c:261
i_callback+0x44/0x80 fs/inode.c:219
__rcu_reclaim kernel/rcu/rcu.h:222 [inline]
rcu_do_batch kernel/rcu/tree.c:2183 [inline]
rcu_core+0x570/0x1540 kernel/rcu/tree.c:2408
rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2417
__do_softirq+0x262/0x98c kernel/softirq.c:292
The buggy address belongs to the object at ffff88801e0b4000
which belongs to the cache sock_inode_cache of size 1152
The buggy address is located 120 bytes inside of
1152-byte region [ffff88801e0b4000, ffff88801e0b4480)
The buggy address belongs to the page:
page:ffffea0000782d00 refcount:1 mapcount:0 mapping:ffff88807aa59c40 index:0xffff88801e0b4ffd
raw: 00fffe0000000200 ffffea00008e6c88 ffffea0000782d48 ffff88807aa59c40
raw: ffff88801e0b4ffd ffff88801e0b4000 0000000100000003 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88801e0b3f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
ffff88801e0b3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88801e0b4000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88801e0b4080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801e0b4100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
Fixes: abf9d537fea2 ("llc: add support for SO_BINDTODEVICE")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit 27d53323664c549b5bb2dfaaf6f7ad6e0376a64e ]
In the tx path of l2tp, l2tp_xmit_skb() calls skb_dst_set() to set
skb's dst. However, it will eventually call inet6_csk_xmit() or
ip_queue_xmit() where skb's dst will be overwritten by:
skb_dst_set_noref(skb, dst);
without releasing the old dst in skb. Then it causes dst/dev refcnt leak:
unregister_netdevice: waiting for eth0 to become free. Usage count = 1
This can be reproduced by simply running:
# modprobe l2tp_eth && modprobe l2tp_ip
# sh ./tools/testing/selftests/net/l2tp.sh
So before going to inet6_csk_xmit() or ip_queue_xmit(), skb's dst
should be dropped. This patch is to fix it by removing skb_dst_set()
from l2tp_xmit_skb() and moving skb_dst_drop() into l2tp_xmit_core().
Fixes: 3557baabf280 ("[L2TP]: PPP over L2TP driver core")
Reported-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: James Chapman <jchapman@katalix.com>
Tested-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 5eff06902394425c722f0a44d9545909a8800f79 ]
IPv4 ping sockets don't set fl4.fl4_icmp_{type,code}, which leads to
incomplete IPsec ACQUIRE messages being sent to userspace. Currently,
both raw sockets and IPv6 ping sockets set those fields.
Expected output of "ip xfrm monitor":
acquire proto esp
sel src 10.0.2.15/32 dst 8.8.8.8/32 proto icmp type 8 code 0 dev ens4
policy src 10.0.2.15/32 dst 8.8.8.8/32
<snip>
Currently with ping sockets:
acquire proto esp
sel src 10.0.2.15/32 dst 8.8.8.8/32 proto icmp type 0 code 0 dev ens4
policy src 10.0.2.15/32 dst 8.8.8.8/32
<snip>
The Libreswan test suite found this problem after Fedora changed the
value for the sysctl net.ipv4.ping_group_range.
Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
Reported-by: Paul Wouters <pwouters@redhat.com>
Tested-by: Paul Wouters <pwouters@redhat.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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commit c8b1d7436045d3599bae56aef1682813ecccaad7 upstream.
we need to set 'active_vfs' back to 0, if something goes wrong during the
allocation of SR-IOV resources: otherwise, further VF configurations will
wrongly assume that bp->pf.vf[x] are valid memory locations, and commands
like the ones in the following sequence:
# echo 2 >/sys/bus/pci/devices/${ADDR}/sriov_numvfs
# ip link set dev ens1f0np0 up
# ip link set dev ens1f0np0 vf 0 trust on
will cause a kernel crash similar to this:
bnxt_en 0000:3b:00.0: not enough MMIO resources for SR-IOV
BUG: kernel NULL pointer dereference, address: 0000000000000014
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#1] SMP PTI
CPU: 43 PID: 2059 Comm: ip Tainted: G I 5.8.0-rc2.upstream+ #871
Hardware name: Dell Inc. PowerEdge R740/08D89F, BIOS 2.2.11 06/13/2019
RIP: 0010:bnxt_set_vf_trust+0x5b/0x110 [bnxt_en]
Code: 44 24 58 31 c0 e8 f5 fb ff ff 85 c0 0f 85 b6 00 00 00 48 8d 1c 5b 41 89 c6 b9 0b 00 00 00 48 c1 e3 04 49 03 9c 24 f0 0e 00 00 <8b> 43 14 89 c2 83 c8 10 83 e2 ef 45 84 ed 49 89 e5 0f 44 c2 4c 89
RSP: 0018:ffffac6246a1f570 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000000b
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff98b28f538900
RBP: ffff98b28f538900 R08: 0000000000000000 R09: 0000000000000008
R10: ffffffffb9515be0 R11: ffffac6246a1f678 R12: ffff98b28f538000
R13: 0000000000000001 R14: 0000000000000000 R15: ffffffffc05451e0
FS: 00007fde0f688800(0000) GS:ffff98baffd40000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000014 CR3: 000000104bb0a003 CR4: 00000000007606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
do_setlink+0x994/0xfe0
__rtnl_newlink+0x544/0x8d0
rtnl_newlink+0x47/0x70
rtnetlink_rcv_msg+0x29f/0x350
netlink_rcv_skb+0x4a/0x110
netlink_unicast+0x21d/0x300
netlink_sendmsg+0x329/0x450
sock_sendmsg+0x5b/0x60
____sys_sendmsg+0x204/0x280
___sys_sendmsg+0x88/0xd0
__sys_sendmsg+0x5e/0xa0
do_syscall_64+0x47/0x80
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fixes: c0c050c58d840 ("bnxt_en: New Broadcom ethernet driver.")
Reported-by: Fei Liu <feliu@redhat.com>
CC: Jonathan Toppins <jtoppins@redhat.com>
CC: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Acked-by: Jonathan Toppins <jtoppins@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit b7faf971081a4e56147f082234bfff55135305cb upstream.
Cc: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 00fdec98d9881bf5173af09aebd353ab3b9ac729 upstream.
Trap handler for syscall tracing reads EFA (Exception Fault Address),
in case strace wants PC of trap instruction (EFA is not part of pt_regs
as of current code).
However this EFA read is racy as it happens after dropping to pure
kernel mode (re-enabling interrupts). A taken interrupt could
context-switch, trigger a different task's trap, clobbering EFA for this
execution context.
Fix this by reading EFA early, before re-enabling interrupts. A slight
side benefit is de-duplication of FAKE_RET_FROM_EXCPN in trap handler.
The trap handler is common to both ARCompact and ARCv2 builds too.
This just came out of code rework/review and no real problem was reported
but is clearly a potential problem specially for strace.
Cc: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 41855a898650803e24b284173354cc3e44d07725 upstream.
clang static analysis flags this error
drivers/gpu/drm/radeon/ci_dpm.c:5652:9: warning: Use of memory after it is freed [unix.Malloc]
kfree(rdev->pm.dpm.ps[i].ps_priv);
^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/radeon/ci_dpm.c:5654:2: warning: Attempt to free released memory [unix.Malloc]
kfree(rdev->pm.dpm.ps);
^~~~~~~~~~~~~~~~~~~~~~
problem is reported in ci_dpm_fini, with these code blocks.
for (i = 0; i < rdev->pm.dpm.num_ps; i++) {
kfree(rdev->pm.dpm.ps[i].ps_priv);
}
kfree(rdev->pm.dpm.ps);
The first free happens in ci_parse_power_table where it cleans up locally
on a failure. ci_dpm_fini also does a cleanup.
ret = ci_parse_power_table(rdev);
if (ret) {
ci_dpm_fini(rdev);
return ret;
}
So remove the cleanup in ci_parse_power_table and
move the num_ps calculation to inside the loop so ci_dpm_fini
will know how many array elements to free.
Fixes: cc8dbbb4f62a ("drm/radeon: add dpm support for CI dGPUs (v2)")
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6bf9cd2eed9aee6d742bb9296c994a91f5316949 upstream.
Under somewhat convoluted conditions, it is possible to attempt to
release an extent_buffer that is under io, which triggers a BUG_ON in
btrfs_release_extent_buffer_pages.
This relies on a few different factors. First, extent_buffer reads done
as readahead for searching use WAIT_NONE, so they free the local extent
buffer reference while the io is outstanding. However, they should still
be protected by TREE_REF. However, if the system is doing signficant
reclaim, and simultaneously heavily accessing the extent_buffers, it is
possible for releasepage to race with two concurrent readahead attempts
in a way that leaves TREE_REF unset when the readahead extent buffer is
released.
Essentially, if two tasks race to allocate a new extent_buffer, but the
winner who attempts the first io is rebuffed by a page being locked
(likely by the reclaim itself) then the loser will still go ahead with
issuing the readahead. The loser's call to find_extent_buffer must also
race with the reclaim task reading the extent_buffer's refcount as 1 in
a way that allows the reclaim to re-clear the TREE_REF checked by
find_extent_buffer.
The following represents an example execution demonstrating the race:
CPU0 CPU1 CPU2
reada_for_search reada_for_search
readahead_tree_block readahead_tree_block
find_create_tree_block find_create_tree_block
alloc_extent_buffer alloc_extent_buffer
find_extent_buffer // not found
allocates eb
lock pages
associate pages to eb
insert eb into radix tree
set TREE_REF, refs == 2
unlock pages
read_extent_buffer_pages // WAIT_NONE
not uptodate (brand new eb)
lock_page
if !trylock_page
goto unlock_exit // not an error
free_extent_buffer
release_extent_buffer
atomic_dec_and_test refs to 1
find_extent_buffer // found
try_release_extent_buffer
take refs_lock
reads refs == 1; no io
atomic_inc_not_zero refs to 2
mark_buffer_accessed
check_buffer_tree_ref
// not STALE, won't take refs_lock
refs == 2; TREE_REF set // no action
read_extent_buffer_pages // WAIT_NONE
clear TREE_REF
release_extent_buffer
atomic_dec_and_test refs to 1
unlock_page
still not uptodate (CPU1 read failed on trylock_page)
locks pages
set io_pages > 0
submit io
return
free_extent_buffer
release_extent_buffer
dec refs to 0
delete from radix tree
btrfs_release_extent_buffer_pages
BUG_ON(io_pages > 0)!!!
We observe this at a very low rate in production and were also able to
reproduce it in a test environment by introducing some spurious delays
and by introducing probabilistic trylock_page failures.
To fix it, we apply check_tree_ref at a point where it could not
possibly be unset by a competing task: after io_pages has been
incremented. All the codepaths that clear TREE_REF check for io, so they
would not be able to clear it after this point until the io is done.
Stack trace, for reference:
[1417839.424739] ------------[ cut here ]------------
[1417839.435328] kernel BUG at fs/btrfs/extent_io.c:4841!
[1417839.447024] invalid opcode: 0000 [#1] SMP
[1417839.502972] RIP: 0010:btrfs_release_extent_buffer_pages+0x20/0x1f0
[1417839.517008] Code: ed e9 ...
[1417839.558895] RSP: 0018:ffffc90020bcf798 EFLAGS: 00010202
[1417839.570816] RAX: 0000000000000002 RBX: ffff888102d6def0 RCX: 0000000000000028
[1417839.586962] RDX: 0000000000000002 RSI: ffff8887f0296482 RDI: ffff888102d6def0
[1417839.603108] RBP: ffff88885664a000 R08: 0000000000000046 R09: 0000000000000238
[1417839.619255] R10: 0000000000000028 R11: ffff88885664af68 R12: 0000000000000000
[1417839.635402] R13: 0000000000000000 R14: ffff88875f573ad0 R15: ffff888797aafd90
[1417839.651549] FS: 00007f5a844fa700(0000) GS:ffff88885f680000(0000) knlGS:0000000000000000
[1417839.669810] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[1417839.682887] CR2: 00007f7884541fe0 CR3: 000000049f609002 CR4: 00000000003606e0
[1417839.699037] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[1417839.715187] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[1417839.731320] Call Trace:
[1417839.737103] release_extent_buffer+0x39/0x90
[1417839.746913] read_block_for_search.isra.38+0x2a3/0x370
[1417839.758645] btrfs_search_slot+0x260/0x9b0
[1417839.768054] btrfs_lookup_file_extent+0x4a/0x70
[1417839.778427] btrfs_get_extent+0x15f/0x830
[1417839.787665] ? submit_extent_page+0xc4/0x1c0
[1417839.797474] ? __do_readpage+0x299/0x7a0
[1417839.806515] __do_readpage+0x33b/0x7a0
[1417839.815171] ? btrfs_releasepage+0x70/0x70
[1417839.824597] extent_readpages+0x28f/0x400
[1417839.833836] read_pages+0x6a/0x1c0
[1417839.841729] ? startup_64+0x2/0x30
[1417839.849624] __do_page_cache_readahead+0x13c/0x1a0
[1417839.860590] filemap_fault+0x6c7/0x990
[1417839.869252] ? xas_load+0x8/0x80
[1417839.876756] ? xas_find+0x150/0x190
[1417839.884839] ? filemap_map_pages+0x295/0x3b0
[1417839.894652] __do_fault+0x32/0x110
[1417839.902540] __handle_mm_fault+0xacd/0x1000
[1417839.912156] handle_mm_fault+0xaa/0x1c0
[1417839.921004] __do_page_fault+0x242/0x4b0
[1417839.930044] ? page_fault+0x8/0x30
[1417839.937933] page_fault+0x1e/0x30
[1417839.945631] RIP: 0033:0x33c4bae
[1417839.952927] Code: Bad RIP value.
[1417839.960411] RSP: 002b:00007f5a844f7350 EFLAGS: 00010206
[1417839.972331] RAX: 000000000000006e RBX: 1614b3ff6a50398a RCX: 0000000000000000
[1417839.988477] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
[1417840.004626] RBP: 00007f5a844f7420 R08: 000000000000006e R09: 00007f5a94aeccb8
[1417840.020784] R10: 00007f5a844f7350 R11: 0000000000000000 R12: 00007f5a94aecc79
[1417840.036932] R13: 00007f5a94aecc78 R14: 00007f5a94aecc90 R15: 00007f5a94aecc40
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Boris Burkov <boris@bur.io>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit 90ecba9f1041f436ed2b35ba7a970c7cc5d0df23 which is
commit 2bbcaaee1fcbd83272e29f31e2bb7e70d8c49e05 upstream.
It is being reverted upstream, just hasn't made it there yet and is
causing lots of problems.
Reported-by: Hans de Goede <hdegoede@redhat.com>
Cc: Qiujun Huang <hqjagain@gmail.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5ecad245de2ae23dc4e2dbece92f8ccfbaed2fa7 upstream.
Bit 8 would be the "global" bit, which does not quite make sense for non-leaf
page table entries. Intel ignores it; AMD ignores it in PDEs and PDPEs, but
reserves it in PML4Es.
Probably, earlier versions of the AMD manual documented it as reserved in PDPEs
as well, and that behavior made it into KVM as well as kvm-unit-tests; fix it.
Cc: stable@vger.kernel.org
Reported-by: Nadav Amit <namit@vmware.com>
Fixes: a0c0feb57992 ("KVM: x86: reserve bit 8 of non-leaf PDPEs and PML4Es in 64-bit mode on AMD", 2014-09-03)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e337bf19f6af38d5c3fa6d06cd594e0f890ca1ac upstream.
These devices claim to be 96kHz mono, but actually are 48kHz stereo with
swapped channels and unaligned transfers.
Cc: stable@vger.kernel.org
Signed-off-by: Hector Martin <marcan@marcan.st>
Link: https://lore.kernel.org/r/20200702071433.237843-1-marcan@marcan.st
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6a6ca7881b1ab1c13fe0d70bae29211a65dd90de upstream.
We have a Dell AIO, there is neither internal speaker nor internal
mic, only a multi-function audio jack on it.
Users reported that after freshly installing the OS and plug
a headset to the audio jack, the headset can't output sound. I
reproduced this bug, at that moment, the Input Source is as below:
Simple mixer control 'Input Source',0
Capabilities: cenum
Items: 'Headphone Mic' 'Headset Mic'
Item0: 'Headphone Mic'
That is because the patch_realtek will set this audio jack as mic_in
mode if Input Source's value is hp_mic.
If it is not fresh installing, this issue will not happen since the
systemd will run alsactl restore -f /var/lib/alsa/asound.state, this
will set the 'Input Source' according to history value.
If there is internal speaker or internal mic, this issue will not
happen since there is valid sink/source in the pulseaudio, the PA will
set the 'Input Source' according to active_port.
To fix this issue, change the parser function to let the hs_mic be
stored ahead of hp_mic.
Cc: stable@vger.kernel.org
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Link: https://lore.kernel.org/r/20200625083833.11264-1-hui.wang@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ad155712bb1ea2151944cf06a0e08c315c70c1e3 upstream.
The stack object “info” in snd_opl3_ioctl() has a leaking problem.
It has 2 padding bytes which are not initialized and leaked via
“copy_to_user”.
Signed-off-by: xidongwang <wangxidong_97@163.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1594006058-30362-1-git-send-email-wangxidong_97@163.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 8523c006264df65aac7d77284cc69aac46a6f842 ]
After entering kdb due to breakpoint, when we execute 'ss' or 'go' (will
delay installing breakpoints, do single-step first), it won't work
correctly, and it will enter kdb due to oops.
It's because the reason gotten in kdb_stub() is not as expected, and it
seems that the ex_vector for single-step should be 0, like what arch
powerpc/sh/parisc has implemented.
Before the patch:
Entering kdb (current=0xffff8000119e2dc0, pid 0) on processor 0 due to Keyboard Entry
[0]kdb> bp printk
Instruction(i) BP #0 at 0xffff8000101486cc (printk)
is enabled addr at ffff8000101486cc, hardtype=0 installed=0
[0]kdb> g
/ # echo h > /proc/sysrq-trigger
Entering kdb (current=0xffff0000fa878040, pid 266) on processor 3 due to Breakpoint @ 0xffff8000101486cc
[3]kdb> ss
Entering kdb (current=0xffff0000fa878040, pid 266) on processor 3 Oops: (null)
due to oops @ 0xffff800010082ab8
CPU: 3 PID: 266 Comm: sh Not tainted 5.7.0-rc4-13839-gf0e5ad491718 #6
Hardware name: linux,dummy-virt (DT)
pstate: 00000085 (nzcv daIf -PAN -UAO)
pc : el1_irq+0x78/0x180
lr : __handle_sysrq+0x80/0x190
sp : ffff800015003bf0
x29: ffff800015003d20 x28: ffff0000fa878040
x27: 0000000000000000 x26: ffff80001126b1f0
x25: ffff800011b6a0d8 x24: 0000000000000000
x23: 0000000080200005 x22: ffff8000101486cc
x21: ffff800015003d30 x20: 0000ffffffffffff
x19: ffff8000119f2000 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000
x15: 0000000000000000 x14: 0000000000000000
x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000000
x9 : 0000000000000000 x8 : ffff800015003e50
x7 : 0000000000000002 x6 : 00000000380b9990
x5 : ffff8000106e99e8 x4 : ffff0000fadd83c0
x3 : 0000ffffffffffff x2 : ffff800011b6a0d8
x1 : ffff800011b6a000 x0 : ffff80001130c9d8
Call trace:
el1_irq+0x78/0x180
printk+0x0/0x84
write_sysrq_trigger+0xb0/0x118
proc_reg_write+0xb4/0xe0
__vfs_write+0x18/0x40
vfs_write+0xb0/0x1b8
ksys_write+0x64/0xf0
__arm64_sys_write+0x14/0x20
el0_svc_common.constprop.2+0xb0/0x168
do_el0_svc+0x20/0x98
el0_sync_handler+0xec/0x1a8
el0_sync+0x140/0x180
[3]kdb>
After the patch:
Entering kdb (current=0xffff8000119e2dc0, pid 0) on processor 0 due to Keyboard Entry
[0]kdb> bp printk
Instruction(i) BP #0 at 0xffff8000101486cc (printk)
is enabled addr at ffff8000101486cc, hardtype=0 installed=0
[0]kdb> g
/ # echo h > /proc/sysrq-trigger
Entering kdb (current=0xffff0000fa852bc0, pid 268) on processor 0 due to Breakpoint @ 0xffff8000101486cc
[0]kdb> g
Entering kdb (current=0xffff0000fa852bc0, pid 268) on processor 0 due to Breakpoint @ 0xffff8000101486cc
[0]kdb> ss
Entering kdb (current=0xffff0000fa852bc0, pid 268) on processor 0 due to SS trap @ 0xffff800010082ab8
[0]kdb>
Fixes: 44679a4f142b ("arm64: KGDB: Add step debugging support")
Signed-off-by: Wei Li <liwei391@huawei.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20200509214159.19680-2-liwei391@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit f79a732a8325dfbd570d87f1435019d7e5501c6d ]
On partial_drain completion we should be in SNDRV_PCM_STATE_RUNNING
state, so set that for partially draining streams in
snd_compr_drain_notify() and use a flag for partially draining streams
While at it, add locks for stream state change in
snd_compr_drain_notify() as well.
Fixes: f44f2a5417b2 ("ALSA: compress: fix drain calls blocking other compress functions (v6)")
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Tested-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20200629134737.105993-4-vkoul@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 3ed58f96a70b85ef646d5427258f677f1395b62f ]
In a case where the ID_REV register read is failed, the memory for a
private data structure has to be freed before returning error from the
function smsc95xx_bind.
Fixes: bbd9f9ee69242 ("smsc95xx: add wol support for more frame types")
Signed-off-by: Andre Edich <andre.edich@microchip.com>
Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 7c8b1e855f94f88a0c569be6309fc8d5c8844cd1 ]
The return value of the function smsc95xx_reset() must be checked
to avoid returning false success from the function smsc95xx_bind().
Fixes: 2f7ca802bdae2 ("net: Add SMSC LAN9500 USB2.0 10/100 ethernet adapter driver")
Signed-off-by: Andre Edich <andre.edich@microchip.com>
Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 8a259e6b73ad8181b0b2ef338b35043433db1075 ]
t4_prep_fw goto bye tag with positive return value when something
bad happened and which can not free resource in adap_init0.
so fix it to return negative value.
Fixes: 16e47624e76b ("cxgb4: Add new scheme to update T4/T5 firmware")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Li Heng <liheng40@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit afe89f115e84edbc76d316759e206580a06c6973 ]
The sense data buffer in sense_buf_pool is allocated with size of
MPT_SENSE_BUFFER_ALLOC(64) (multiplied by req_depth) while SNS_LEN(sc)(96)
is used when reading the data. That may lead to a read from unallocated
area, sometimes from another (unallocated) page. To fix this, limit the
read size to MPT_SENSE_BUFFER_ALLOC.
Link: https://lore.kernel.org/r/20200616150446.4840-1-thenzl@redhat.com
Co-developed-by: Stanislav Saner <ssaner@redhat.com>
Signed-off-by: Stanislav Saner <ssaner@redhat.com>
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 06096cc6c5a84ced929634b0d79376b94c65a4bd ]
If an spi device is unbounded from the driver before the release
process, there will be an NULL pointer reference when it's
referenced in spi_slave_abort().
Fix it by checking it's already freed before reference.
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@gmail.com>
Link: https://lore.kernel.org/r/20200618032125.4650-2-zhenzhong.duan@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit abd42781c3d2155868821f1b947ae45bbc33330d ]
Imagine below scene, spidev is referenced after it's freed.
spidev_release() spidev_remove()
...
spin_lock_irq(&spidev->spi_lock);
spidev->spi = NULL;
spin_unlock_irq(&spidev->spi_lock);
mutex_lock(&device_list_lock);
dofree = (spidev->spi == NULL);
if (dofree)
kfree(spidev);
mutex_unlock(&device_list_lock);
mutex_lock(&device_list_lock);
list_del(&spidev->device_entry);
device_destroy(spidev_class, spidev->devt);
clear_bit(MINOR(spidev->devt), minors);
if (spidev->users == 0)
kfree(spidev);
mutex_unlock(&device_list_lock);
Fix it by resetting spidev->spi in device_list_lock's protection.
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@gmail.com>
Link: https://lore.kernel.org/r/20200618032125.4650-1-zhenzhong.duan@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 774911290c589e98e3638e73b24b0a4d4530e97c ]
The current number of KVM_IRQCHIP_NUM_PINS results in an order 3
allocation (32kb) for each guest start/restart. This can result in OOM
killer activity even with free swap when the memory is fragmented
enough:
kernel: qemu-system-s39 invoked oom-killer: gfp_mask=0x440dc0(GFP_KERNEL_ACCOUNT|__GFP_COMP|__GFP_ZERO), order=3, oom_score_adj=0
kernel: CPU: 1 PID: 357274 Comm: qemu-system-s39 Kdump: loaded Not tainted 5.4.0-29-generic #33-Ubuntu
kernel: Hardware name: IBM 8562 T02 Z06 (LPAR)
kernel: Call Trace:
kernel: ([<00000001f848fe2a>] show_stack+0x7a/0xc0)
kernel: [<00000001f8d3437a>] dump_stack+0x8a/0xc0
kernel: [<00000001f8687032>] dump_header+0x62/0x258
kernel: [<00000001f8686122>] oom_kill_process+0x172/0x180
kernel: [<00000001f8686abe>] out_of_memory+0xee/0x580
kernel: [<00000001f86e66b8>] __alloc_pages_slowpath+0xd18/0xe90
kernel: [<00000001f86e6ad4>] __alloc_pages_nodemask+0x2a4/0x320
kernel: [<00000001f86b1ab4>] kmalloc_order+0x34/0xb0
kernel: [<00000001f86b1b62>] kmalloc_order_trace+0x32/0xe0
kernel: [<00000001f84bb806>] kvm_set_irq_routing+0xa6/0x2e0
kernel: [<00000001f84c99a4>] kvm_arch_vm_ioctl+0x544/0x9e0
kernel: [<00000001f84b8936>] kvm_vm_ioctl+0x396/0x760
kernel: [<00000001f875df66>] do_vfs_ioctl+0x376/0x690
kernel: [<00000001f875e304>] ksys_ioctl+0x84/0xb0
kernel: [<00000001f875e39a>] __s390x_sys_ioctl+0x2a/0x40
kernel: [<00000001f8d55424>] system_call+0xd8/0x2c8
As far as I can tell s390x does not use the iopins as we bail our for
anything other than KVM_IRQ_ROUTING_S390_ADAPTER and the chip/pin is
only used for KVM_IRQ_ROUTING_IRQCHIP. So let us use a small number to
reduce the memory footprint.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20200617083620.5409-1-borntraeger@de.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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This fixes duplicate kernel log messages. Only earlycon from ttyS0
should be logged, after virtio-console is loaded it should come only
from there.
Bug: 160341724
Change-Id: I194343fcaff822b31c8d8b6138196cb4e077613c
Signed-off-by: Alistair Delva <adelva@google.com>
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Changes in 4.4.230
btrfs: cow_file_range() num_bytes and disk_num_bytes are same
btrfs: fix data block group relocation failure due to concurrent scrub
mm: fix swap cache node allocation mask
EDAC/amd64: Read back the scrub rate PCI register on F15h
mm/slub: fix stack overruns with SLUB_STATS
usb: usbtest: fix missing kfree(dev->buf) in usbtest_disconnect
kgdb: Avoid suspicious RCU usage warning
crypto: af_alg - fix use-after-free in af_alg_accept() due to bh_lock_sock()
sched/rt: Show the 'sched_rr_timeslice' SCHED_RR timeslice tuning knob in milliseconds
hwmon: (max6697) Make sure the OVERT mask is set correctly
hwmon: (acpi_power_meter) Fix potential memory leak in acpi_power_meter_add()
virtio-blk: free vblk-vqs in error path of virtblk_probe()
i2c: algo-pca: Add 0x78 as SCL stuck low status for PCA9665
Revert "ALSA: usb-audio: Improve frames size computation"
SMB3: Honor 'seal' flag for multiuser mounts
SMB3: Honor persistent/resilient handle flags for multiuser mounts
cifs: Fix the target file was deleted when rename failed.
MIPS: Add missing EHB in mtc0 -> mfc0 sequence for DSPen
netfilter: nf_conntrack_h323: lost .data_len definition for Q.931/ipv6
Linux 4.4.230
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I5402fcb3d8e16e5bf6bec2151354cb207b064e91
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Could you please push this patch into stable@?
it fixes memory corruption in kernels v3.5 .. v4.10
Lost .data_len definition leads to write beyond end of
struct nf_ct_h323_master. Usually it corrupts following
struct nf_conn_nat, however if nat is not loaded it corrupts
following slab object.
In mainline this problem went away in v4.11,
after commit 9f0f3ebeda47 ("netfilter: helpers: remove data_len usage
for inkernel helpers") however many stable kernels are still affected.
Fixes: 1afc56794e03 ("netfilter: nf_ct_helper: implement variable length helper private data") # v3.5
cc: stable@vger.kernel.org
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit fcec538ef8cca0ad0b84432235dccd9059c8e6f8 upstream.
This resolves the hazard between the mtc0 in the change_c0_status() and
the mfc0 in configure_exception_vector(). Without resolving this hazard
configure_exception_vector() could read an old value and would restore
this old value again. This would revert the changes change_c0_status()
did. I checked this by printing out the read_c0_status() at the end of
per_cpu_trap_init() and the ST0_MX is not set without this patch.
The hazard is documented in the MIPS Architecture Reference Manual Vol.
III: MIPS32/microMIPS32 Privileged Resource Architecture (MD00088), rev
6.03 table 8.1 which includes:
Producer | Consumer | Hazard
----------|----------|----------------------------
mtc0 | mfc0 | any coprocessor 0 register
I saw this hazard on an Atheros AR9344 rev 2 SoC with a MIPS 74Kc CPU.
There the change_c0_status() function would activate the DSPen by
setting ST0_MX in the c0_status register. This was reverted and then the
system got a DSP exception when the DSP registers were saved in
save_dsp() in the first process switch. The crash looks like this:
[ 0.089999] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[ 0.097796] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[ 0.107070] Kernel panic - not syncing: Unexpected DSP exception
[ 0.113470] Rebooting in 1 seconds..
We saw this problem in OpenWrt only on the MIPS 74Kc based Atheros SoCs,
not on the 24Kc based SoCs. We only saw it with kernel 5.4 not with
kernel 4.19, in addition we had to use GCC 8.4 or 9.X, with GCC 8.3 it
did not happen.
In the kernel I bisected this problem to commit 9012d011660e ("compiler:
allow all arches to enable CONFIG_OPTIMIZE_INLINING"), but when this was
reverted it also happened after commit 172dcd935c34b ("MIPS: Always
allocate exception vector for MIPSr2+").
Commit 0b24cae4d535 ("MIPS: Add missing EHB in mtc0 -> mfc0 sequence.")
does similar changes to a different file. I am not sure if there are
more places affected by this problem.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9ffad9263b467efd8f8dc7ae1941a0a655a2bab2 upstream.
When xfstest generic/035, we found the target file was deleted
if the rename return -EACESS.
In cifs_rename2, we unlink the positive target dentry if rename
failed with EACESS or EEXIST, even if the target dentry is positived
before rename. Then the existing file was deleted.
We should just delete the target file which created during the
rename.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 00dfbc2f9c61185a2e662f27c45a0bb29b2a134f upstream.
Without this:
- persistent handles will only be enabled for per-user tcons if the
server advertises the 'Continuous Availabity' capability
- resilient handles would never be enabled for per-user tcons
Signed-off-by: Paul Aurich <paul@darkrain42.org>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit cc15461c73d7d044d56c47e869a215e49bd429c8 upstream.
Ensure multiuser SMB3 mounts use encryption for all users' tcons if the
mount options are configured to require encryption. Without this, only
the primary tcon and IPC tcons are guaranteed to be encrypted. Per-user
tcons would only be encrypted if the server was configured to require
encryption.
Signed-off-by: Paul Aurich <paul@darkrain42.org>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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