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* BACKPORT: bpf: introduce BPF_F_ALLOW_OVERRIDE flagAlexei Starovoitov2022-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If BPF_F_ALLOW_OVERRIDE flag is used in BPF_PROG_ATTACH command to the given cgroup the descendent cgroup will be able to override effective bpf program that was inherited from this cgroup. By default it's not passed, therefore override is disallowed. Examples: 1. prog X attached to /A with default prog Y fails to attach to /A/B and /A/B/C Everything under /A runs prog X 2. prog X attached to /A with allow_override. prog Y fails to attach to /A/B with default (non-override) prog M attached to /A/B with allow_override. Everything under /A/B runs prog M only. 3. prog X attached to /A with allow_override. prog Y fails to attach to /A with default. The user has to detach first to switch the mode. In the future this behavior may be extended with a chain of non-overridable programs. Also fix the bug where detach from cgroup where nothing is attached was not throwing error. Return ENOENT in such case. Add several testcases and adjust libbpf. Fixes: 3007098494be ("cgroup: add support for eBPF programs") Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Daniel Mack <daniel@zonque.org> Signed-off-by: David S. Miller <davem@davemloft.net> Fixes: Change-Id: I3df35d8d3b1261503f9b5bcd90b18c9358f1ac28        ("cgroup: add support for eBPF programs") [AmitP: Refactored original patch for android-4.9 where libbpf sources are in samples/bpf/ and test_cgrp2_attach2, test_cgrp2_sock, and test_cgrp2_sock2 sample tests do not exist.] (cherry picked from commit 7f677633379b4abb3281cdbe7e7006f049305c03) Signed-off-by: Amit Pundir <amit.pundir@linaro.org> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* UPSTREAM: samples: bpf: add userspace example for attaching eBPF programs to ↵Daniel Mack2022-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cgroups Cherry-pick from commit d8c5b17f2bc0de09fbbfa14d90e8168163a579e7 Add a simple userpace program to demonstrate the new API to attach eBPF programs to cgroups. This is what it does: * Create arraymap in kernel with 4 byte keys and 8 byte values * Load eBPF program The eBPF program accesses the map passed in to store two pieces of information. The number of invocations of the program, which maps to the number of packets received, is stored to key 0. Key 1 is incremented on each iteration by the number of bytes stored in the skb. * Detach any eBPF program previously attached to the cgroup * Attach the new program to the cgroup using BPF_PROG_ATTACH * Once a second, read map[0] and map[1] to see how many bytes and packets were seen on any socket of tasks in the given cgroup. The program takes a cgroup path as 1st argument, and either "ingress" or "egress" as 2nd. Optionally, "drop" can be passed as 3rd argument, which will make the generated eBPF program return 0 instead of 1, so the kernel will drop the packet. libbpf gained two new wrappers for the new syscall commands. Signed-off-by: Daniel Mack <daniel@zonque.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Bug: 30950746 Change-Id: I011436a755abd62050edd22e47995c166a0bd8a2 Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* bpf: enhance verifier to understand stack pointer arithmeticYonghong Song2022-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [ Upstream commit 332270fdc8b6fba07d059a9ad44df9e1a2ad4529 ] llvm 4.0 and above generates the code like below: .... 440: (b7) r1 = 15 441: (05) goto pc+73 515: (79) r6 = *(u64 *)(r10 -152) 516: (bf) r7 = r10 517: (07) r7 += -112 518: (bf) r2 = r7 519: (0f) r2 += r1 520: (71) r1 = *(u8 *)(r8 +0) 521: (73) *(u8 *)(r2 +45) = r1 .... and the verifier complains "R2 invalid mem access 'inv'" for insn #521. This is because verifier marks register r2 as unknown value after #519 where r2 is a stack pointer and r1 holds a constant value. Teach verifier to recognize "stack_ptr + imm" and "stack_ptr + reg with const val" as valid stack_ptr with new offset. Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* bpf: allow access into map value arraysJosef Bacik2022-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Suppose you have a map array value that is something like this struct foo { unsigned iter; int array[SOME_CONSTANT]; }; You can easily insert this into an array, but you cannot modify the contents of foo->array[] after the fact. This is because we have no way to verify we won't go off the end of the array at verification time. This patch provides a start for this work. We accomplish this by keeping track of a minimum and maximum value a register could be while we're checking the code. Then at the time we try to do an access into a MAP_VALUE we verify that the maximum offset into that region is a valid access into that memory region. So in practice, code such as this unsigned index = 0; if (foo->iter >= SOME_CONSTANT) foo->iter = index; else index = foo->iter++; foo->array[index] = bar; would be allowed, as we can verify that index will always be between 0 and SOME_CONSTANT-1. If you wish to use signed values you'll have to have an extra check to make sure the index isn't less than 0, or do something like index %= SOME_CONSTANT. Signed-off-by: Josef Bacik <jbacik@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* bpf: add test cases for direct packet accessDaniel Borkmann2022-04-19
| | | | | | | | | | | | Add couple of test cases for direct write and the negative size issue, and also adjust the direct packet access test4 since it asserts that writes are not possible, but since we've just added support for writes, we need to invert the verdict to ACCEPT, of course. Summary: 133 PASSED, 0 FAILED. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* bpf: fix range propagation on direct packet accessDaniel Borkmann2022-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | LLVM can generate code that tests for direct packet access via skb->data/data_end in a way that currently gets rejected by the verifier, example: [...] 7: (61) r3 = *(u32 *)(r6 +80) 8: (61) r9 = *(u32 *)(r6 +76) 9: (bf) r2 = r9 10: (07) r2 += 54 11: (3d) if r3 >= r2 goto pc+12 R1=inv R2=pkt(id=0,off=54,r=0) R3=pkt_end R4=inv R6=ctx R9=pkt(id=0,off=0,r=0) R10=fp 12: (18) r4 = 0xffffff7a 14: (05) goto pc+430 [...] from 11 to 24: R1=inv R2=pkt(id=0,off=54,r=0) R3=pkt_end R4=inv R6=ctx R9=pkt(id=0,off=0,r=0) R10=fp 24: (7b) *(u64 *)(r10 -40) = r1 25: (b7) r1 = 0 26: (63) *(u32 *)(r6 +56) = r1 27: (b7) r2 = 40 28: (71) r8 = *(u8 *)(r9 +20) invalid access to packet, off=20 size=1, R9(id=0,off=0,r=0) The reason why this gets rejected despite a proper test is that we currently call find_good_pkt_pointers() only in case where we detect tests like rX > pkt_end, where rX is of type pkt(id=Y,off=Z,r=0) and derived, for example, from a register of type pkt(id=Y,off=0,r=0) pointing to skb->data. find_good_pkt_pointers() then fills the range in the current branch to pkt(id=Y,off=0,r=Z) on success. For above case, we need to extend that to recognize pkt_end >= rX pattern and mark the other branch that is taken on success with the appropriate pkt(id=Y,off=0,r=Z) type via find_good_pkt_pointers(). Since eBPF operates on BPF_JGT (>) and BPF_JGE (>=), these are the only two practical options to test for from what LLVM could have generated, since there's no such thing as BPF_JLT (<) or BPF_JLE (<=) that we would need to take into account as well. After the fix: [...] 7: (61) r3 = *(u32 *)(r6 +80) 8: (61) r9 = *(u32 *)(r6 +76) 9: (bf) r2 = r9 10: (07) r2 += 54 11: (3d) if r3 >= r2 goto pc+12 R1=inv R2=pkt(id=0,off=54,r=0) R3=pkt_end R4=inv R6=ctx R9=pkt(id=0,off=0,r=0) R10=fp 12: (18) r4 = 0xffffff7a 14: (05) goto pc+430 [...] from 11 to 24: R1=inv R2=pkt(id=0,off=54,r=54) R3=pkt_end R4=inv R6=ctx R9=pkt(id=0,off=0,r=54) R10=fp 24: (7b) *(u64 *)(r10 -40) = r1 25: (b7) r1 = 0 26: (63) *(u32 *)(r6 +56) = r1 27: (b7) r2 = 40 28: (71) r8 = *(u8 *)(r9 +20) 29: (bf) r1 = r8 30: (25) if r8 > 0x3c goto pc+47 R1=inv56 R2=imm40 R3=pkt_end R4=inv R6=ctx R8=inv56 R9=pkt(id=0,off=0,r=54) R10=fp 31: (b7) r1 = 1 [...] Verifier test cases are also added in this work, one that demonstrates the mentioned example here and one that tries a bad packet access for the current/fall-through branch (the one with types pkt(id=X,off=Y,r=0), pkt(id=X,off=0,r=0)), then a case with good and bad accesses, and two with both test variants (>, >=). Fixes: 969bf05eb3ce ("bpf: direct packet access") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* samples/bpf: add verifier tests for the helper access to the packetAaron Yue2022-04-19
| | | | | | | | | | | test various corner cases of the helper function access to the packet via crafted XDP programs. Signed-off-by: Aaron Yue <haoxuany@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* samples/bpf: add verifier testsAlexei Starovoitov2022-04-19
| | | | | | | | add few tests for "pointer to packet" logic of the verifier Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* bpf, samples: add test cases for raw stackDaniel Borkmann2022-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | This adds test cases mostly around ARG_PTR_TO_RAW_STACK to check the verifier behaviour. [...] #84 raw_stack: no skb_load_bytes OK #85 raw_stack: skb_load_bytes, no init OK #86 raw_stack: skb_load_bytes, init OK #87 raw_stack: skb_load_bytes, spilled regs around bounds OK #88 raw_stack: skb_load_bytes, spilled regs corruption OK #89 raw_stack: skb_load_bytes, spilled regs corruption 2 OK #90 raw_stack: skb_load_bytes, spilled regs + data OK #91 raw_stack: skb_load_bytes, invalid access 1 OK #92 raw_stack: skb_load_bytes, invalid access 2 OK #93 raw_stack: skb_load_bytes, invalid access 3 OK #94 raw_stack: skb_load_bytes, invalid access 4 OK #95 raw_stack: skb_load_bytes, invalid access 5 OK #96 raw_stack: skb_load_bytes, invalid access 6 OK #97 raw_stack: skb_load_bytes, large access OK Summary: 98 PASSED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* samples/bpf: add map_flags to bpf loaderAlexei Starovoitov2022-04-19
| | | | | | | | | note old loader is compatible with new kernel. map_flags are optional Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_ARRAYtom.leiming@gmail.com2022-04-19
| | | | | | | | | A sanity test for BPF_MAP_TYPE_PERCPU_ARRAY Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* samples/bpf: make map creation more verboseAlexei Starovoitov2022-04-19
| | | | | | | | | | map creation is typically the first one to fail when rlimits are too low, not enough memory, etc Make this failure scenario more verbose Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_HASHMartin KaFai Lau2022-04-19
| | | | | | | | | A sanity test for BPF_MAP_TYPE_PERCPU_HASH. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* bpf: fix bpf_skb_in_cgroup helper namingDaniel Borkmann2022-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | While hashing out BPF's current_task_under_cgroup helper bits, it came to discussion that the skb_in_cgroup helper name was suboptimally chosen. Tejun says: So, I think in_cgroup should mean that the object is in that particular cgroup while under_cgroup in the subhierarchy of that cgroup. Let's rename the other subhierarchy test to under too. I think that'd be a lot less confusing going forward. [...] It's more intuitive and gives us the room to implement the real "in" test if ever necessary in the future. Since this touches uapi bits, we need to change this as long as v4.8 is not yet officially released. Thus, change the helper enum and rename related bits. Fixes: 4a482f34afcc ("cgroup: bpf: Add bpf_skb_in_cgroup_proto") Reference: http://patchwork.ozlabs.org/patch/658500/ Suggested-by: Sargun Dhillon <sargun@sargun.me> Suggested-by: Tejun Heo <tj@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* cgroup: bpf: Add an example to do cgroup checking in BPFMartin KaFai Lau2022-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | test_cgrp2_array_pin.c: A userland program that creates a bpf_map (BPF_MAP_TYPE_GROUP_ARRAY), pouplates/updates it with a cgroup2's backed fd and pins it to a bpf-fs's file. The pinned file can be loaded by tc and then used by the bpf prog later. This program can also update an existing pinned array and it could be useful for debugging/testing purpose. test_cgrp2_tc_kern.c: A bpf prog which should be loaded by tc. It is to demonstrate the usage of bpf_skb_in_cgroup. test_cgrp2_tc.sh: A script that glues the test_cgrp2_array_pin.c and test_cgrp2_tc_kern.c together. The idea is like: 1. Load the test_cgrp2_tc_kern.o by tc 2. Use test_cgrp2_array_pin.c to populate a BPF_MAP_TYPE_CGROUP_ARRAY with a cgroup fd 3. Do a 'ping -6 ff02::1%ve' to ensure the packet has been dropped because of a match on the cgroup Most of the lines in test_cgrp2_tc.sh is the boilerplate to setup the cgroup/bpf-fs/net-devices/netns...etc. It is not bulletproof on errors but should work well enough and give enough debug info if things did not go well. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Tejun Heo <tj@kernel.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* samples/bpf: add 'pointer to packet' testsAlexei Starovoitov2022-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | parse_simple.c - packet parser exapmle with single length check that filters out udp packets for port 9 parse_varlen.c - variable length parser that understand multiple vlan headers, ipip, ipip6 and ip options to filter out udp or tcp packets on port 9. The packet is parsed layer by layer with multitple length checks. parse_ldabs.c - classic style of packet parsing using LD_ABS instruction. Same functionality as parse_simple. simple = 24.1Mpps per core varlen = 22.7Mpps ldabs = 21.4Mpps Parser with LD_ABS instructions is slower than full direct access parser which does more packet accesses and checks. These examples demonstrate the choice bpf program authors can make between flexibility of the parser vs speed. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* samples/bpf: add tracepoint vs kprobe performance testsAlexei Starovoitov2022-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the first microbenchmark does fd=open("/proc/self/comm"); for() { write(fd, "test"); } and on 4 cpus in parallel: writes per sec base (no tracepoints, no kprobes) 930k with kprobe at __set_task_comm() 420k with tracepoint at task:task_rename 730k For kprobe + full bpf program manully fetches oldcomm, newcomm via bpf_probe_read. For tracepint bpf program does nothing, since arguments are copied by tracepoint. 2nd microbenchmark does: fd=open("/dev/urandom"); for() { read(fd, buf); } and on 4 cpus in parallel: reads per sec base (no tracepoints, no kprobes) 300k with kprobe at urandom_read() 279k with tracepoint at random:urandom_read 290k bpf progs attached to kprobe and tracepoint are noop. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* samples/bpf: add map performance testAlexei Starovoitov2022-04-19
| | | | | | | | | performance tests for hash map and per-cpu hash map with and without pre-allocation Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* samples/bpf: add bpf map stress testAlexei Starovoitov2022-04-19
| | | | | | | | | | | | | | | | | this test calls bpf programs from different contexts: from inside of slub, from rcu, from pretty much everywhere, since it kprobes all spin_lock functions. It stresses the bpf hash and percpu map pre-allocation, deallocation logic and call_rcu mechanisms. User space part adding more stress by walking and deleting map elements. Note that due to nature bpf_load.c the earlier kprobe+bpf programs are already active while loader loads new programs, creates new kprobes and attaches them. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* bpf: Add bpf_probe_write_user BPF helper to be called in tracersSargun Dhillon2022-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | This allows user memory to be written to during the course of a kprobe. It shouldn't be used to implement any kind of security mechanism because of TOC-TOU attacks, but rather to debug, divert, and manipulate execution of semi-cooperative processes. Although it uses probe_kernel_write, we limit the address space the probe can write into by checking the space with access_ok. We do this as opposed to calling copy_to_user directly, in order to avoid sleeping. In addition we ensure the threads's current fs / segment is USER_DS and the thread isn't exiting nor a kernel thread. Given this feature is meant for experiments, and it has a risk of crashing the system, and running programs, we print a warning on when a proglet that attempts to use this helper is installed, along with the pid and process name. Signed-off-by: Sargun Dhillon <sargun@sargun.me> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* samples/bpf: offwaketime exampleAlexei Starovoitov2022-04-19
| | | | | | | | | | | | | | | | | This is simplified version of Brendan Gregg's offwaketime: This program shows kernel stack traces and task names that were blocked and "off-CPU", along with the stack traces and task names for the threads that woke them, and the total elapsed time from when they blocked to when they were woken up. The combined stacks, task names, and total time is summarized in kernel context for efficiency. Example: $ sudo ./offwaketime | flamegraph.pl > demo.svg Open demo.svg in the browser as FlameGraph visualization. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
* Merge branch 'android-4.4-p' of ↵Michael Bestas2021-05-31
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://android.googlesource.com/kernel/common into lineage-18.1-caf-msm8998 This brings LA.UM.9.2.r1-03300-SDMxx0.0 up to date with https://android.googlesource.com/kernel/common/ android-4.4-p at commit: 3628cdd31199d Merge 4.4.270 into android-4.4-p Conflicts: drivers/mmc/core/core.c drivers/usb/core/hub.c kernel/trace/trace.c Change-Id: I6b81471122341f9769ce9c65cbd0fedd5e908b38
| * kfifo: fix ternary sign extension bugsDan Carpenter2021-05-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [ Upstream commit 926ee00ea24320052b46745ef4b00d91c05bd03d ] The intent with this code was to return negative error codes but instead it returns positives. The problem is how type promotion works with ternary operations. These functions return long, "ret" is an int and "copied" is a u32. The negative error code is first cast to u32 so it becomes a high positive and then cast to long where it's still a positive. We could fix this by declaring "ret" as a ssize_t but let's just get rid of the ternaries instead. Link: https://lkml.kernel.org/r/YIE+/cK1tBzSuQPU@mwanda Fixes: 5bf2b19320ec ("kfifo: add example files to the kernel sample directory") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Stefani Seibold <stefani@seibold.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
* | Merge branch 'android-4.4-p' of ↵Michael Bestas2020-03-08
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998 This brings LA.UM.8.4.r1-05200-8x98.0 up to date with https://android.googlesource.com/kernel/common/ android-4.4-p at commit: 4db1ebdd40ec0 FROMLIST: HID: nintendo: add nintendo switch controller driver Conflicts: arch/arm64/boot/Makefile arch/arm64/kernel/psci.c arch/x86/configs/x86_64_cuttlefish_defconfig drivers/md/dm.c drivers/of/Kconfig drivers/thermal/thermal_core.c fs/proc/meminfo.c kernel/locking/spinlock_debug.c kernel/time/hrtimer.c net/wireless/util.c Change-Id: I5b5163497b7c6ab8487ffbb2d036e4cda01ed670
| * samples: pktgen: fix proc_cmd command result check logicDaniel T. Lee2020-01-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [ Upstream commit 3cad8f911575191fb3b81d8ed0e061e30f922223 ] Currently, proc_cmd is used to dispatch command to 'pg_ctrl', 'pg_thread', 'pg_set'. proc_cmd is designed to check command result with grep the "Result:", but this might fail since this string is only shown in 'pg_thread' and 'pg_set'. This commit fixes this logic by grep-ing the "Result:" string only when the command is not for 'pg_ctrl'. For clarity of an execution flow, 'errexit' flag has been set. To cleanup pktgen on exit, trap has been added for EXIT signal. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
* | Merge android-4.4.186 (aeb051d) into msm-4.4Srinivasarao P2019-07-23
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * refs/heads/tmp-aeb051d Linux 4.4.186 KVM: x86: protect KVM_CREATE_PIT/KVM_CREATE_PIT2 with kvm->lock s390/qdio: don't touch the dsci in tiqdio_add_input_queues() s390/qdio: (re-)initialize tiqdio list entries s390: fix stfle zero padding ARC: hide unused function unw_hdr_alloc kvm: x86: avoid warning on repeated KVM_SET_TSS_ADDR dm verity: use message limit for data block corruption message sis900: fix TX completion ppp: mppe: Add softdep to arc4 be2net: fix link failure after ethtool offline test ARM: omap2: remove incorrect __init annotation perf/core: Fix perf_sample_regs_user() mm check e1000e: start network tx queue only when link is up MIPS: Remove superfluous check for __linux__ VMCI: Fix integer overflow in VMCI handle arrays carl9170: fix misuse of device driver API staging: comedi: amplc_pci230: fix null pointer deref on interrupt staging: comedi: dt282x: fix a null pointer deref on interrupt usb: renesas_usbhs: add a workaround for a race condition of workqueue usb: gadget: ether: Fix race between gether_disconnect and rx_submit USB: serial: option: add support for GosunCn ME3630 RNDIS mode USB: serial: ftdi_sio: add ID for isodebug v1 mwifiex: Don't abort on small, spec-compliant vendor IEs fscrypt: don't set policy for a dead directory mwifiex: Fix heap overflow in mwifiex_uap_parse_tail_ies() mwifiex: Abort at too short BSS descriptor element x86/tls: Fix possible spectre-v1 in do_get_thread_area() x86/ptrace: Fix possible spectre-v1 in ptrace_get_debugreg() udf: Fix incorrect final NOT_ALLOCATED (hole) extent length bnx2x: Check if transceiver implements DDM before access md: fix for divide error in status_resync ARM: davinci: da8xx: specify dma_coherent_mask for lcdc ARM: davinci: da850-evm: call regulator_has_full_constraints() Input: imx_keypad - make sure keyboard can always wake up system can: mcp251x: add support for mcp25625 dt-bindings: can: mcp251x: add mcp25625 support mwifiex: Fix possible buffer overflows at parsing bss descriptor mac80211: mesh: fix RCU warning samples, bpf: fix to change the buffer size for read() Input: elantech - enable middle button support on 2 ThinkPads ANDROID: overlayfs ovl_create_of_link regression Change-Id: I42190d7fc7de3f2287199a9f69bc42bcf3596ec7 Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
| * samples, bpf: fix to change the buffer size for read()Chang-Hsien Tsai2019-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [ Upstream commit f7c2d64bac1be2ff32f8e4f500c6e5429c1003e0 ] If the trace for read is larger than 4096, the return value sz will be 4096. This results in off-by-one error on buf: static char buf[4096]; ssize_t sz; sz = read(trace_fd, buf, sizeof(buf)); if (sz > 0) { buf[sz] = 0; puts(buf); } Signed-off-by: Chang-Hsien Tsai <luke.tw@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
* | Merge android-4.4.97 (46d256d) into msm-4.4Srinivasarao P2017-12-18
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * refs/heads/tmp-46d256d Linux 4.4.97 staging: r8712u: Fix Sparse warning in rtl871x_xmit.c xen: don't print error message in case of missing Xenstore entry bt8xx: fix memory leak s390/dasd: check for device error pointer within state change interrupts mei: return error on notification request to a disconnected client exynos4-is: fimc-is: Unmap region obtained by of_iomap() staging: lustre: ptlrpc: skip lock if export failed staging: lustre: hsm: stack overrun in hai_dump_data_field staging: lustre: llite: don't invoke direct_IO for the EOF case platform/x86: intel_mid_thermal: Fix module autoload scsi: aacraid: Process Error for response I/O xen/manage: correct return value check on xenbus_scanf() cx231xx: Fix I2C on Internal Master 3 Bus perf tools: Only increase index if perf_evsel__new_idx() succeeds drm/amdgpu: when dpm disabled, also need to stop/start vce. i2c: riic: correctly finish transfers ext4: do not use stripe_width if it is not set ext4: fix stripe-unaligned allocations staging: rtl8712u: Fix endian settings for structs describing network packets mfd: axp20x: Fix axp288 PEK_DBR and PEK_DBF irqs being swapped mfd: ab8500-sysctrl: Handle probe deferral ARM: pxa: Don't rely on public mmc header to include leds.h mmc: s3cmci: include linux/interrupt.h for tasklet_struct PM / wakeirq: report a wakeup_event on dedicated wekup irq Fix tracing sample code warning. tracing/samples: Fix creation and deletion of simple_thread_fn creation drm/msm: fix an integer overflow test drm/msm: Fix potential buffer overflow issue perf tools: Fix build failure on perl script context ocfs2: fstrim: Fix start offset of first cluster group during fstrim ARM: 8715/1: add a private asm/unaligned.h ARM: dts: mvebu: pl310-cache disable double-linefill arm64: ensure __dump_instr() checks addr_limit ASoC: adau17x1: Workaround for noise bug in ADC KEYS: fix out-of-bounds read during ASN.1 parsing KEYS: return full count in keyring_read() if buffer is too small cifs: check MaxPathNameComponentLength != 0 before using it ALSA: seq: Fix nested rwsem annotation for lockdep splat ALSA: timer: Add missing mutex lock for compat ioctls BACKPORT: xfrm: Clear sk_dst_cache when applying per-socket policy. Revert "ANDROID: sched/rt: schedtune: Add boost retention to RT" cpufreq: Drop schedfreq governor ANDROID: sched/rt: schedtune: Add boost retention to RT ANDROID: sched/rt: add schedtune accounting ANDROID: Revert "arm64: move ELF_ET_DYN_BASE to 4GB / 4MB" ANDROID: Revert "arm: move ELF_ET_DYN_BASE to 4MB" sched: EAS: Fix the calculation of group util in group_idle_state() sched: EAS: update trg_cpu to backup_cpu if no energy saving for target_cpu sched: EAS: Fix the condition to distinguish energy before/after Conflicts: drivers/cpufreq/Kconfig drivers/gpu/drm/msm/msm_gem_submit.c kernel/sched/core.c kernel/sched/fair.c kernel/sched/rt.c kernel/sched/sched.h Change-Id: I0d8c5287cb67fd47c8944a002c0ca71adcdef537 Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
| * Fix tracing sample code warning.Linus Torvalds2017-11-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit a0cb2b5c390151837b08e5f7bca4a6ecddbcd39c upstream. Commit 6575257c60e1 ("tracing/samples: Fix creation and deletion of simple_thread_fn creation") introduced a new warning due to using a boolean as a counter. Just make it "int". Fixes: 6575257c60e1 ("tracing/samples: Fix creation and deletion of simple_thread_fn creation") Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * tracing/samples: Fix creation and deletion of simple_thread_fn creationSteven Rostedt (VMware)2017-11-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 6575257c60e1a26a5319ccf2b5ce5b6449001017 upstream. Commit 7496946a8 ("tracing: Add samples of DECLARE_EVENT_CLASS() and DEFINE_EVENT()") added template examples for all the events. It created a DEFINE_EVENT_FN() example which reused the foo_bar_reg and foo_bar_unreg functions. Enabling both the TRACE_EVENT_FN() and DEFINE_EVENT_FN() example trace events caused the foo_bar_reg to be called twice, creating the test thread twice. The foo_bar_unreg would remove it only once, even if it was called multiple times, leaving a thread existing when the module is unloaded, causing an oops. Add a ref count and allow foo_bar_reg() and foo_bar_unreg() be called by multiple trace events. Fixes: 7496946a8 ("tracing: Add samples of DECLARE_EVENT_CLASS() and DEFINE_EVENT()") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Merge tag v4.4.55 into branch 'msm-4.4'Blagovest Kolenichev2017-03-23
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | refs/heads/tmp-28ec98b: Linux 4.4.55 ext4: don't BUG when truncating encrypted inodes on the orphan list dm: flush queued bios when process blocks to avoid deadlock nfit, libnvdimm: fix interleave set cookie calculation s390/kdump: Use "LINUX" ELF note name instead of "CORE" KVM: s390: Fix guest migration for huge guests resulting in panic mvsas: fix misleading indentation serial: samsung: Continue to work if DMA request fails USB: serial: io_ti: fix information leak in completion handler USB: serial: io_ti: fix NULL-deref in interrupt callback USB: iowarrior: fix NULL-deref in write USB: iowarrior: fix NULL-deref at probe USB: serial: omninet: fix reference leaks at open USB: serial: safe_serial: fix information leak in completion handler usb: host: xhci-plat: Fix timeout on removal of hot pluggable xhci controllers usb: host: xhci-dbg: HCIVERSION should be a binary number usb: gadget: function: f_fs: pass companion descriptor along usb: dwc3: gadget: make Set Endpoint Configuration macros safe usb: gadget: dummy_hcd: clear usb_gadget region before registration powerpc: Emulation support for load/store instructions on LE tracing: Add #undef to fix compile error MIPS: Netlogic: Fix CP0_EBASE redefinition warnings MIPS: DEC: Avoid la pseudo-instruction in delay slots mm: memcontrol: avoid unused function warning cpmac: remove hopeless #warning MIPS: ralink: Remove unused rt*_wdt_reset functions MIPS: ralink: Cosmetic change to prom_init(). mtd: pmcmsp: use kstrndup instead of kmalloc+strncpy MIPS: Update lemote2f_defconfig for CPU_FREQ_STAT change MIPS: ip22: Fix ip28 build for modern gcc MIPS: Update ip27_defconfig for SCSI_DH change MIPS: ip27: Disable qlge driver in defconfig MIPS: Update defconfigs for NF_CT_PROTO_DCCP/UDPLITE change crypto: improve gcc optimization flags for serpent and wp512 USB: serial: digi_acceleport: fix OOB-event processing USB: serial: digi_acceleport: fix OOB data sanity check Linux 4.4.54 drivers: hv: Turn off write permission on the hypercall page fat: fix using uninitialized fields of fat_inode/fsinfo_inode libceph: use BUG() instead of BUG_ON(1) drm/i915/dsi: Do not clear DPOUNIT_CLOCK_GATE_DISABLE from vlv_init_display_clock_gating fakelb: fix schedule while atomic drm/atomic: fix an error code in mode_fixup() drm/ttm: Make sure BOs being swapped out are cacheable drm/edid: Add EDID_QUIRK_FORCE_8BPC quirk for Rotel RSX-1058 drm/ast: Fix AST2400 POST failure without BMC FW or VBIOS drm/ast: Call open_key before enable_mmio in POST code drm/ast: Fix test for VGA enabled drm/amdgpu: add more cases to DCE11 possible crtc mask setup mac80211: flush delayed work when entering suspend xtensa: move parse_tag_fdt out of #ifdef CONFIG_BLK_DEV_INITRD pwm: pca9685: Fix period change with same duty cycle nlm: Ensure callback code also checks that the files match target: Fix NULL dereference during LUN lookup + active I/O shutdown ceph: remove req from unsafe list when unregistering it ktest: Fix child exit code processing IB/srp: Fix race conditions related to task management IB/srp: Avoid that duplicate responses trigger a kernel bug IB/IPoIB: Add destination address when re-queue packet IB/ipoib: Fix deadlock between rmmod and set_mode mnt: Tuck mounts under others instead of creating shadow/side mounts. net: mvpp2: fix DMA address calculation in mvpp2_txq_inc_put() s390: use correct input data address for setup_randomness s390: make setup_randomness work s390: TASK_SIZE for kernel threads s390/dcssblk: fix device size calculation in dcssblk_direct_access() s390/qdio: clear DSCI prior to scanning multiple input queues Bluetooth: Add another AR3012 04ca:3018 device KVM: VMX: use correct vmcs_read/write for guest segment selector/base KVM: s390: Disable dirty log retrieval for UCONTROL guests serial: 8250_pci: Add MKS Tenta SCOM-0800 and SCOM-0801 cards tty: n_hdlc: get rid of racy n_hdlc.tbuf TTY: n_hdlc, fix lockdep false positive Linux 4.4.53 scsi: lpfc: Correct WQ creation for pagesize MIPS: IP22: Fix build error due to binutils 2.25 uselessnes. MIPS: IP22: Reformat inline assembler code to modern standards. powerpc/xmon: Fix data-breakpoint dmaengine: ipu: Make sure the interrupt routine checks all interrupts. bcma: use (get|put)_device when probing/removing device driver md linear: fix a race between linear_add() and linear_congested() rtc: sun6i: Switch to the external oscillator rtc: sun6i: Add some locking NFSv4: fix getacl ERANGE for some ACL buffer sizes NFSv4: fix getacl head length estimation NFSv4: Fix memory and state leak in _nfs4_open_and_get_state nfsd: special case truncates some more nfsd: minor nfsd_setattr cleanup rtlwifi: rtl8192c-common: Fix "BUG: KASAN: rtlwifi: Fix alignment issues gfs2: Add missing rcu locking for glock lookup rdma_cm: fail iwarp accepts w/o connection params RDMA/core: Fix incorrect structure packing for booleans Drivers: hv: util: Backup: Fix a rescind processing issue Drivers: hv: util: Fcopy: Fix a rescind processing issue Drivers: hv: util: kvp: Fix a rescind processing issue hv: init percpu_list in hv_synic_alloc() hv: allocate synic pages for all present CPUs usb: gadget: udc: fsl: Add missing complete function. usb: host: xhci: plat: check hcc_params after add hcd usb: musb: da8xx: Remove CPPI 3.0 quirk and methods w1: ds2490: USB transfer buffers need to be DMAable w1: don't leak refcount on slave attach failure in w1_attach_slave_device() can: usb_8dev: Fix memory leak of priv->cmd_msg_buffer iio: pressure: mpl3115: do not rely on structure field ordering iio: pressure: mpl115: do not rely on structure field ordering arm/arm64: KVM: Enforce unconditional flush to PoC when mapping to stage-2 fuse: add missing FR_FORCE crypto: testmgr - Pad aes_ccm_enc_tv_template vector ath9k: use correct OTP register offsets for the AR9340 and AR9550 ath9k: fix race condition in enabling/disabling IRQs ath5k: drop bogus warning on drv_set_key with unsupported cipher target: Fix multi-session dynamic se_node_acl double free OOPs target: Obtain se_node_acl->acl_kref during get_initiator_node_acl samples/seccomp: fix 64-bit comparison macros ext4: return EROFS if device is r/o and journal replay is needed ext4: preserve the needs_recovery flag when the journal is aborted ext4: fix inline data error paths ext4: fix data corruption in data=journal mode ext4: trim allocation requests to group size ext4: do not polute the extents cache while shifting extents ext4: Include forgotten start block on fallocate insert range loop: fix LO_FLAGS_PARTSCAN hang block/loop: fix race between I/O and set_status jbd2: don't leak modified metadata buffers on an aborted journal Fix: Disable sys_membarrier when nohz_full is enabled sd: get disk reference in sd_check_events() scsi: use 'scsi_device_from_queue()' for scsi_dh scsi: aacraid: Reorder Adapter status check scsi: storvsc: properly set residual data length on errors scsi: storvsc: properly handle SRB_ERROR when sense message is present scsi: storvsc: use tagged SRB requests if supported by the device dm stats: fix a leaked s->histogram_boundaries array dm cache: fix corruption seen when using cache > 2TB ipc/shm: Fix shmat mmap nil-page protection mm: do not access page->mapping directly on page_endio mm: vmpressure: fix sending wrong events on underflow mm/page_alloc: fix nodes for reclaim in fast path iommu/vt-d: Tylersburg isoch identity map check is done too late. iommu/vt-d: Fix some macros that are incorrectly specified in intel-iommu regulator: Fix regulator_summary for deviceless consumers staging: rtl: fix possible NULL pointer dereference ALSA: hda - Fix micmute hotkey problem for a lenovo AIO machine ALSA: hda - Add subwoofer support for Dell Inspiron 17 7000 Gaming ALSA: seq: Fix link corruption by event error handling ALSA: ctxfi: Fallback DMA mask to 32bit ALSA: timer: Reject user params with too small ticks ALSA: hda - fix Lewisburg audio issue ALSA: hda/realtek - Cannot adjust speaker's volume on a Dell AIO ARM: dts: at91: Enable DMA on sama5d2_xplained console ARM: dts: at91: Enable DMA on sama5d4_xplained console ARM: at91: define LPDDR types media: fix dm1105.c build error uvcvideo: Fix a wrong macro am437x-vpfe: always assign bpp variable MIPS: Handle microMIPS jumps in the same way as MIPS32/MIPS64 jumps MIPS: Calculate microMIPS ra properly when unwinding the stack MIPS: Fix is_jump_ins() handling of 16b microMIPS instructions MIPS: Fix get_frame_info() handling of microMIPS function size MIPS: Prevent unaligned accesses during stack unwinding MIPS: Clear ISA bit correctly in get_frame_info() MIPS: Lantiq: Keep ethernet enabled during boot MIPS: OCTEON: Fix copy_from_user fault handling for large buffers MIPS: BCM47XX: Fix button inversion for Asus WL-500W MIPS: Fix special case in 64 bit IP checksumming. samples: move mic/mpssd example code from Documentation Linux 4.4.52 kvm: vmx: ensure VMCS is current while enabling PML Revert "usb: chipidea: imx: enable CI_HDRC_SET_NON_ZERO_TTHA" rtlwifi: rtl_usb: Fix for URB leaking when doing ifconfig up/down block: fix double-free in the failure path of cgwb_bdi_init() goldfish: Sanitize the broken interrupt handler x86/platform/goldfish: Prevent unconditional loading USB: serial: ark3116: fix register-accessor error handling USB: serial: opticon: fix CTS retrieval at open USB: serial: spcp8x5: fix modem-status handling USB: serial: ftdi_sio: fix line-status over-reporting USB: serial: ftdi_sio: fix extreme low-latency setting USB: serial: ftdi_sio: fix modem-status error handling USB: serial: cp210x: add new IDs for GE Bx50v3 boards USB: serial: mos7840: fix another NULL-deref at open tty: serial: msm: Fix module autoload net: socket: fix recvmmsg not returning error from sock_error ip: fix IP_CHECKSUM handling irda: Fix lockdep annotations in hashbin_delete(). dccp: fix freeing skb too early for IPV6_RECVPKTINFO packet: Do not call fanout_release from atomic contexts packet: fix races in fanout_add() net/llc: avoid BUG_ON() in skb_orphan() blk-mq: really fix plug list flushing for nomerge queues rtc: interface: ignore expired timers when enqueuing new timers rtlwifi: rtl_usb: Fix missing entry in USB driver's private data Linux 4.4.51 mmc: core: fix multi-bit bus width without high-speed mode bcache: Make gc wakeup sane, remove set_task_state() ntb_transport: Pick an unused queue NTB: ntb_transport: fix debugfs_remove_recursive printk: use rcuidle console tracepoint ARM: 8658/1: uaccess: fix zeroing of 64-bit get_user() futex: Move futex_init() to core_initcall drm/dp/mst: fix kernel oops when turning off secondary monitor drm/radeon: Use mode h/vdisplay fields to hide out of bounds HW cursor Input: elan_i2c - add ELAN0605 to the ACPI table Fix missing sanity check in /dev/sg scsi: don't BUG_ON() empty DMA transfers fuse: fix use after free issue in fuse_dev_do_read() siano: make it work again with CONFIG_VMAP_STACK vfs: fix uninitialized flags in splice_to_pipe() Linux 4.4.50 l2tp: do not use udp_ioctl() ping: fix a null pointer dereference packet: round up linear to header len net: introduce device min_header_len sit: fix a double free on error path sctp: avoid BUG_ON on sctp_wait_for_sndbuf mlx4: Invoke softirqs after napi_reschedule macvtap: read vnet_hdr_size once tun: read vnet_hdr_sz once tcp: avoid infinite loop in tcp_splice_read() ipv6: tcp: add a missing tcp_v6_restore_cb() ip6_gre: fix ip6gre_err() invalid reads netlabel: out of bound access in cipso_v4_validate() ipv4: keep skb->dst around in presence of IP options net: use a work queue to defer net_disable_timestamp() work tcp: fix 0 divide in __tcp_select_window() ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim() ipv6: fix ip6_tnl_parse_tlv_enc_lim() can: Fix kernel panic at security_sock_rcv_skb Conflicts: drivers/scsi/sd.c drivers/usb/gadget/function/f_fs.c drivers/usb/host/xhci-plat.c CRs-Fixed: 2023471 Change-Id: I396051a8de30271af77b3890d4b19787faa1c31e Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
| * samples/seccomp: fix 64-bit comparison macrosMathias Svensson2017-03-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 916cafdc95843fb9af5fd5f83ca499d75473d107 upstream. There were some bugs in the JNE64 and JLT64 comparision macros. This fixes them, improves comments, and cleans up the file while we are at it. Reported-by: Stephen Röttger <sroettger@google.com> Signed-off-by: Mathias Svensson <idolf@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: James Morris <james.l.morris@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * samples: move mic/mpssd example code from DocumentationShuah Khan2017-03-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 6bee835dd54e279f3d3ae2eca92a9c394b4fd028 upstream. Move mic/mpssd examples to samples and remove it from Documentation Makefile. Create a new Makefile to build mic/mpssd. It can be built from top level directory or from mic/mpssd directory: Run make -C samples/mic/mpssd or cd samples/mic/mpssd; make Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> [backported to 4.4-stable as this code is broken on newer versions of gcc and we don't want to break the build for a Documentation sample. - gregkh] Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | kprobes: Add arm64 case in kprobe example moduleSandeepa Prabhu2016-10-20
|/ | | | | | | | | | | commit af78cede8bfc772baf424fc03f7cd3c8f9437733 upstream. Add info prints in sample kprobe handlers for ARM64 Signed-off-by: Sandeepa Prabhu <sandeepa.s.prabhu@gmail.com> Signed-off-by: David A. Long <dave.long@linaro.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* samples/bpf: fix trace_output exampleAlexei Starovoitov2016-05-18
| | | | | | | | | | | | | [ Upstream commit 569cc39d39385a74b23145496bca2df5ac8b2fb8 ] llvm cannot always recognize memset as builtin function and optimize it away, so just delete it. It was a leftover from testing of bpf_perf_event_output() with large data structures. Fixes: 39111695b1b8 ("samples: bpf: add bpf_perf_event_output example") Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2015-11-17
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) Fix list tests in netfilter ingress support, from Florian Westphal. 2) Fix reversal of input and output interfaces in ingress hook invocation, from Pablo Neira Ayuso. 3) We have a use after free in r8169, caught by Dave Jones, fixed by Francois Romieu. 4) Splice use-after-free fix in AF_UNIX frmo Hannes Frederic Sowa. 5) Three ipv6 route handling bug fixes from Martin KaFai Lau: a) Don't create clone routes not managed by the fib6 tree b) Don't forget to check expiration of DST_NOCACHE routes. c) Handle rt->dst.from == NULL properly. 6) Several AF_PACKET fixes wrt transport header setting and SKB protocol setting, from Daniel Borkmann. 7) Fix thunder driver crash on shutdown, from Pavel Fedin. 8) Several Mellanox driver fixes (max MTU calculations, use of correct DMA unmap in TX path, etc.) from Saeed Mahameed, Tariq Toukan, Doron Tsur, Achiad Shochat, Eran Ben Elisha, and Noa Osherovich. 9) Several mv88e6060 DSA driver fixes (wrong bit definitions for certain registers, etc.) from Neil Armstrong. 10) Make sure to disable preemption while updating per-cpu stats of ip tunnels, from Jason A. Donenfeld. 11) Various ARM64 bpf JIT fixes, from Yang Shi. 12) Flush icache properly in ARM JITs, from Daniel Borkmann. 13) Fix masking of RX and TX interrupts in ravb driver, from Masaru Nagai. 14) Fix netdev feature propagation for devices not implementing ->ndo_set_features(). From Nikolay Aleksandrov. 15) Big endian fix in vmxnet3 driver, from Shrikrishna Khare. 16) RAW socket code increments incorrect SNMP counters, fix from Ben Cartwright-Cox. 17) IPv6 multicast SNMP counters are bumped twice, fix from Neil Horman. 18) Fix handling of VLAN headers on stacked devices when REORDER is disabled. From Vlad Yasevich. 19) Fix SKB leaks and use-after-free in ipvlan and macvlan drivers, from Sabrina Dubroca. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (83 commits) MAINTAINERS: Update Mellanox's Eth NIC driver entries net/core: revert "net: fix __netdev_update_features return.." and add comment af_unix: take receive queue lock while appending new skb rtnetlink: fix frame size warning in rtnl_fill_ifinfo net: use skb_clone to avoid alloc_pages failure. packet: Use PAGE_ALIGNED macro packet: Don't check frames_per_block against negative values net: phy: Use interrupts when available in NOLINK state phy: marvell: Add support for 88E1540 PHY arm64: bpf: make BPF prologue and epilogue align with ARM64 AAPCS macvlan: fix leak in macvlan_handle_frame ipvlan: fix use after free of skb ipvlan: fix leak in ipvlan_rcv_frame vlan: Do not put vlan headers back on bridge and macvlan ports vlan: Fix untag operations of stacked vlans with REORDER_HEADER off via-velocity: unconditionally drop frames with bad l2 length ipg: Remove ipg driver dl2k: Add support for IP1000A-based cards snmp: Remove duplicate OUTMCAST stat increment net: thunder: Check for driver data in nicvf_remove() ...
| * bpf: samples: exclude asm/sysreg.h for arm64Yang Shi2015-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | commit 338d4f49d6f7114a017d294ccf7374df4f998edc ("arm64: kernel: Add support for Privileged Access Never") includes sysreg.h into futex.h and uaccess.h. But, the inline assembly used by asm/sysreg.h is incompatible with llvm so it will cause BPF samples build failure for ARM64. Since sysreg.h is useless for BPF samples, just exclude it from Makefile via defining __ASM_SYSREG_H. Signed-off-by: Yang Shi <yang.shi@linaro.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'for-next' of ↵Linus Torvalds2015-11-13
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending Pull SCSI target updates from Nicholas Bellinger: "This series contains HCH's changes to absorb configfs attribute ->show() + ->store() function pointer usage from it's original tree-wide consumers, into common configfs code. It includes usb-gadget, target w/ drivers, netconsole and ocfs2 changes to realize the improved simplicity, that now renders the original include/target/configfs_macros.h CPP magic for fabric drivers and others, unnecessary and obsolete. And with common code in place, new configfs attributes can be added easier than ever before. Note, there are further improvements in-flight from other folks for v4.5 code in configfs land, plus number of target fixes for post -rc1 code" In the meantime, a new user of the now-removed old configfs API came in through the char/misc tree in commit 7bd1d4093c2f ("stm class: Introduce an abstraction for System Trace Module devices"). This merge resolution comes from Alexander Shishkin, who updated his stm class tracing abstraction to account for the removal of the old show_attribute and store_attribute methods in commit 517982229f78 ("configfs: remove old API") from this pull. As Alexander says about that patch: "There's no need to keep an extra wrapper structure per item and the awkward show_attribute/store_attribute item ops are no longer needed. This patch converts policy code to the new api, all the while making the code quite a bit smaller and easier on the eyes. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>" That patch was folded into the merge so that the tree should be fully bisectable. * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (23 commits) configfs: remove old API ocfs2/cluster: use per-attribute show and store methods ocfs2/cluster: move locking into attribute store methods netconsole: use per-attribute show and store methods target: use per-attribute show and store methods spear13xx_pcie_gadget: use per-attribute show and store methods dlm: use per-attribute show and store methods usb-gadget/f_serial: use per-attribute show and store methods usb-gadget/f_phonet: use per-attribute show and store methods usb-gadget/f_obex: use per-attribute show and store methods usb-gadget/f_uac2: use per-attribute show and store methods usb-gadget/f_uac1: use per-attribute show and store methods usb-gadget/f_mass_storage: use per-attribute show and store methods usb-gadget/f_sourcesink: use per-attribute show and store methods usb-gadget/f_printer: use per-attribute show and store methods usb-gadget/f_midi: use per-attribute show and store methods usb-gadget/f_loopback: use per-attribute show and store methods usb-gadget/ether: use per-attribute show and store methods usb-gadget/f_acm: use per-attribute show and store methods usb-gadget/f_hid: use per-attribute show and store methods ...
| * configfs: remove old APIChristoph Hellwig2015-10-13
| | | | | | | | | | | | | | | | | | Remove the old show_attribute and store_attribute methods and update the documentation. Also replace the two C samples with a single new one in the proper samples directory where people expect to find it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* | Merge tag 'trace-v4.4' of ↵Linus Torvalds2015-11-06
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracking updates from Steven Rostedt: "Most of the changes are clean ups and small fixes. Some of them have stable tags to them. I searched through my INBOX just as the merge window opened and found lots of patches to pull. I ran them through all my tests and they were in linux-next for a few days. Features added this release: ---------------------------- - Module globbing. You can now filter function tracing to several modules. # echo '*:mod:*snd*' > set_ftrace_filter (Dmitry Safonov) - Tracer specific options are now visible even when the tracer is not active. It was rather annoying that you can only see and modify tracer options after enabling the tracer. Now they are in the options/ directory even when the tracer is not active. Although they are still only visible when the tracer is active in the trace_options file. - Trace options are now per instance (although some of the tracer specific options are global) - New tracefs file: set_event_pid. If any pid is added to this file, then all events in the instance will filter out events that are not part of this pid. sched_switch and sched_wakeup events handle next and the wakee pids" * tag 'trace-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (68 commits) tracefs: Fix refcount imbalance in start_creating() tracing: Put back comma for empty fields in boot string parsing tracing: Apply tracer specific options from kernel command line. tracing: Add some documentation about set_event_pid ring_buffer: Remove unneeded smp_wmb() before wakeup of reader benchmark tracing: Allow dumping traces without tracking trace started cpus ring_buffer: Fix more races when terminating the producer in the benchmark ring_buffer: Do no not complete benchmark reader too early tracing: Remove redundant TP_ARGS redefining tracing: Rename max_stack_lock to stack_trace_max_lock tracing: Allow arch-specific stack tracer recordmcount: arm64: Replace the ignored mcount call into nop recordmcount: Fix endianness handling bug for nop_mcount tracepoints: Fix documentation of RCU lockdep checks tracing: ftrace_event_is_function() can return boolean tracing: is_legal_op() can return boolean ring-buffer: rb_event_is_commit() can return boolean ring-buffer: rb_per_cpu_empty() can return boolean ring_buffer: ring_buffer_empty{cpu}() can return boolean ring-buffer: rb_is_reader_page() can return boolean ...
| * | Sample: Trace_event: Correct the commentsChunyan Zhang2015-11-02
| |/ | | | | | | | | | | | | | | | | | | | | The commit 889204278ccf ("tracing: Update trace-event-sample with TRACE_SYSTEM_VAR documentation") changed TRACE_SYSTEM to 'sample-trace', but didn't make the according change of its name in the comments. Link: http://lkml.kernel.org/r/1443599650-23680-1-git-send-email-zhang.chunyan@linaro.org Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | bpf: add sample usages for persistent maps/progsDaniel Borkmann2015-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a couple of stand-alone examples on how BPF_OBJ_PIN and BPF_OBJ_GET commands can be used. Example with maps: # ./fds_example -F /sys/fs/bpf/m -P -m -k 1 -v 42 bpf: map fd:3 (Success) bpf: pin ret:(0,Success) bpf: fd:3 u->(1:42) ret:(0,Success) # ./fds_example -F /sys/fs/bpf/m -G -m -k 1 bpf: get fd:3 (Success) bpf: fd:3 l->(1):42 ret:(0,Success) # ./fds_example -F /sys/fs/bpf/m -G -m -k 1 -v 24 bpf: get fd:3 (Success) bpf: fd:3 u->(1:24) ret:(0,Success) # ./fds_example -F /sys/fs/bpf/m -G -m -k 1 bpf: get fd:3 (Success) bpf: fd:3 l->(1):24 ret:(0,Success) # ./fds_example -F /sys/fs/bpf/m2 -P -m bpf: map fd:3 (Success) bpf: pin ret:(0,Success) # ./fds_example -F /sys/fs/bpf/m2 -G -m -k 1 bpf: get fd:3 (Success) bpf: fd:3 l->(1):0 ret:(0,Success) # ./fds_example -F /sys/fs/bpf/m2 -G -m bpf: get fd:3 (Success) Example with progs: # ./fds_example -F /sys/fs/bpf/p -P -p bpf: prog fd:3 (Success) bpf: pin ret:(0,Success) bpf sock:4 <- fd:3 attached ret:(0,Success) # ./fds_example -F /sys/fs/bpf/p -G -p bpf: get fd:3 (Success) bpf: sock:4 <- fd:3 attached ret:(0,Success) # ./fds_example -F /sys/fs/bpf/p2 -P -p -o ./sockex1_kern.o bpf: prog fd:5 (Success) bpf: pin ret:(0,Success) bpf: sock:3 <- fd:5 attached ret:(0,Success) # ./fds_example -F /sys/fs/bpf/p2 -G -p bpf: get fd:3 (Success) bpf: sock:4 <- fd:3 attached ret:(0,Success) Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2015-11-01
|\ \
| * | bpf: sample: define aarch64 specific registersYang Shi2015-10-27
| | | | | | | | | | | | | | | | | | | | | | | | Define aarch64 specific registers for building bpf samples correctly. Signed-off-by: Yang Shi <yang.shi@linaro.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | samples: bpf: add bpf_perf_event_output exampleAlexei Starovoitov2015-10-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Performance test and example of bpf_perf_event_output(). kprobe is attached to sys_write() and trivial bpf program streams pid+cookie into userspace via PERF_COUNT_SW_BPF_OUTPUT event. Usage: $ sudo ./bld_x64/samples/bpf/trace_output recv 2968913 events per sec Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | bpf: add unprivileged bpf testsAlexei Starovoitov2015-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add new tests samples/bpf/test_verifier: unpriv: return pointer checks that pointer cannot be returned from the eBPF program unpriv: add const to pointer unpriv: add pointer to pointer unpriv: neg pointer checks that pointer arithmetic is disallowed unpriv: cmp pointer with const unpriv: cmp pointer with pointer checks that comparison of pointers is disallowed Only one case allowed 'void *value = bpf_map_lookup_elem(..); if (value == 0) ...' unpriv: check that printk is disallowed since bpf_trace_printk is not available to unprivileged unpriv: pass pointer to helper function checks that pointers cannot be passed to functions that expect integers If function expects a pointer the verifier allows only that type of pointer. Like 1st argument of bpf_map_lookup_elem() must be pointer to map. (applies to non-root as well) unpriv: indirectly pass pointer on stack to helper function checks that pointer stored into stack cannot be used as part of key passed into bpf_map_lookup_elem() unpriv: mangle pointer on stack 1 unpriv: mangle pointer on stack 2 checks that writing into stack slot that already contains a pointer is disallowed unpriv: read pointer from stack in small chunks checks that < 8 byte read from stack slot that contains a pointer is disallowed unpriv: write pointer into ctx checks that storing pointers into skb->fields is disallowed unpriv: write pointer into map elem value checks that storing pointers into element values is disallowed For example: int bpf_prog(struct __sk_buff *skb) { u32 key = 0; u64 *value = bpf_map_lookup_elem(&map, &key); if (value) *value = (u64) skb; } will be rejected. unpriv: partial copy of pointer checks that doing 32-bit register mov from register containing a pointer is disallowed unpriv: pass pointer to tail_call checks that passing pointer as an index into bpf_tail_call is disallowed unpriv: cmp map pointer with zero checks that comparing map pointer with constant is disallowed unpriv: write into frame pointer checks that frame pointer is read-only (applies to root too) unpriv: cmp of frame pointer checks that R10 cannot be using in comparison unpriv: cmp of stack pointer checks that Rx = R10 - imm is ok, but comparing Rx is not unpriv: obfuscate stack pointer checks that Rx = R10 - imm is ok, but Rx -= imm is not Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2015-10-02
|\| | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: net/dsa/slave.c net/dsa/slave.c simply had overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | kprobes: use _do_fork() in samples to make them work againPetr Mladek2015-10-01
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 3033f14ab78c ("clone: support passing tls argument via C rather than pt_regs magic") introduced _do_fork() that allowed to pass @tls parameter. The old do_fork() is defined only for architectures that are not ready to use this way and do not define HAVE_COPY_THREAD_TLS. Let's use _do_fork() in the kprobe examples to make them work again on all architectures. Signed-off-by: Petr Mladek <pmladek@suse.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thiago Macieira <thiago.macieira@intel.com> Cc: Jiri Kosina <jkosina@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* / bpf: add bpf_redirect() helperAlexei Starovoitov2015-09-17
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Existing bpf_clone_redirect() helper clones skb before redirecting it to RX or TX of destination netdev. Introduce bpf_redirect() helper that does that without cloning. Benchmarked with two hosts using 10G ixgbe NICs. One host is doing line rate pktgen. Another host is configured as: $ tc qdisc add dev $dev ingress $ tc filter add dev $dev root pref 10 u32 match u32 0 0 flowid 1:2 \ action bpf run object-file tcbpf1_kern.o section clone_redirect_xmit drop so it receives the packet on $dev and immediately xmits it on $dev + 1 The section 'clone_redirect_xmit' in tcbpf1_kern.o file has the program that does bpf_clone_redirect() and performance is 2.0 Mpps $ tc filter add dev $dev root pref 10 u32 match u32 0 0 flowid 1:2 \ action bpf run object-file tcbpf1_kern.o section redirect_xmit drop which is using bpf_redirect() - 2.4 Mpps and using cls_bpf with integrated actions as: $ tc filter add dev $dev root pref 10 \ bpf run object-file tcbpf1_kern.o section redirect_xmit integ_act classid 1 performance is 2.5 Mpps To summarize: u32+act_bpf using clone_redirect - 2.0 Mpps u32+act_bpf using redirect - 2.4 Mpps cls_bpf using redirect - 2.5 Mpps For comparison linux bridge in this setup is doing 2.1 Mpps and ixgbe rx + drop in ip_rcv - 7.8 Mpps Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bpf: fix build warnings and add function read_trace_pipe()Kaixu Xia2015-08-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | There are two improvements in this patch: 1. Fix the build warnings; 2. Add function read_trace_pipe() to print the result on the screen; Before this patch, we can get the result through /sys/kernel/de bug/tracing/trace_pipe and get nothing on the screen. By applying this patch, the result can be printed on the screen. $ ./tracex6 ... tracex6-705 [003] d..1 131.428593: : CPU-3 19981414 sshd-683 [000] d..1 131.428727: : CPU-0 221682321 sshd-683 [000] d..1 131.428821: : CPU-0 221808766 sshd-683 [000] d..1 131.428950: : CPU-0 221982984 sshd-683 [000] d..1 131.429045: : CPU-0 222111851 tracex6-705 [003] d..1 131.429168: : CPU-3 20757551 sshd-683 [000] d..1 131.429170: : CPU-0 222281240 sshd-683 [000] d..1 131.429261: : CPU-0 222403340 sshd-683 [000] d..1 131.429378: : CPU-0 222561024 ... Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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