Merge 4.4.228 into android-4.4-p

Changes in 4.4.228
	ipv6: fix IPV6_ADDRFORM operation logic
	vxlan: Avoid infinite loop when suppressing NS messages with invalid options
	scsi: return correct blkprep status code in case scsi_init_io() fails.
	net: phy: marvell: Limit 88m1101 autoneg errata to 88E1145 as well.
	pwm: fsl-ftm: Use flat regmap cache
	igb: improve handling of disconnected adapters
	ARM: 8977/1: ptrace: Fix mask for thumb breakpoint hook
	sched/fair: Don't NUMA balance for kthreads
	ath9k_htc: Silence undersized packet warnings
	x86_64: Fix jiffies ODR violation
	x86/speculation: Prevent rogue cross-process SSBD shutdown
	x86/reboot/quirks: Add MacBook6,1 reboot quirk
	efi/efivars: Add missing kobject_put() in sysfs entry creation error path
	ALSA: es1688: Add the missed snd_card_free()
	ALSA: usb-audio: Fix inconsistent card PM state after resume
	ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile()
	ACPI: PM: Avoid using power resources if there are none for D0
	cgroup, blkcg: Prepare some symbols for module and !CONFIG_CGROUP usages
	nilfs2: fix null pointer dereference at nilfs_segctor_do_construct()
	spi: bcm2835aux: Fix controller unregister order
	ALSA: pcm: disallow linking stream to itself
	x86/speculation: Change misspelled STIPB to STIBP
	x86/speculation: Add support for STIBP always-on preferred mode
	x86/speculation: Avoid force-disabling IBPB based on STIBP and enhanced IBRS.
	x86/speculation: PR_SPEC_FORCE_DISABLE enforcement for indirect branches.
	spi: dw: fix possible race condition
	spi: dw: Fix controller unregister order
	spi: No need to assign dummy value in spi_unregister_controller()
	spi: Fix controller unregister order
	spi: pxa2xx: Fix controller unregister order
	spi: bcm2835: Fix controller unregister order
	ovl: initialize error in ovl_copy_xattr
	proc: Use new_inode not new_inode_pseudo
	video: fbdev: w100fb: Fix a potential double free.
	KVM: nSVM: leave ASID aside in copy_vmcb_control_area
	KVM: nVMX: Consult only the "basic" exit reason when routing nested exit
	KVM: arm64: Make vcpu_cp1x() work on Big Endian hosts
	ath9k: Fix use-after-free Read in ath9k_wmi_ctrl_rx
	ath9k: Fix use-after-free Write in ath9k_htc_rx_msg
	ath9x: Fix stack-out-of-bounds Write in ath9k_hif_usb_rx_cb
	ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb
	Smack: slab-out-of-bounds in vsscanf
	mm/slub: fix a memory leak in sysfs_slab_add()
	fat: don't allow to mount if the FAT length == 0
	can: kvaser_usb: kvaser_usb_leaf: Fix some info-leaks to USB devices
	spi: dw: Zero DMA Tx and Rx configurations on stack
	Bluetooth: Add SCO fallback for invalid LMP parameters error
	kgdb: Prevent infinite recursive entries to the debugger
	spi: dw: Enable interrupts in accordance with DMA xfer mode
	clocksource: dw_apb_timer_of: Fix missing clockevent timers
	btrfs: do not ignore error from btrfs_next_leaf() when inserting checksums
	ARM: 8978/1: mm: make act_mm() respect THREAD_SIZE
	net: vmxnet3: fix possible buffer overflow caused by bad DMA value in vmxnet3_get_rss()
	staging: android: ion: use vmap instead of vm_map_ram
	e1000: Distribute switch variables for initialization
	media: dvb: return -EREMOTEIO on i2c transfer failure.
	MIPS: Make sparse_init() using top-down allocation
	netfilter: nft_nat: return EOPNOTSUPP if type or flags are not supported
	lib/mpi: Fix 64-bit MIPS build with Clang
	net: lpc-enet: fix error return code in lpc_mii_init()
	net: allwinner: Fix use correct return type for ndo_start_xmit()
	powerpc/spufs: fix copy_to_user while atomic
	mips: cm: Fix an invalid error code of INTVN_*_ERR
	kgdb: Fix spurious true from in_dbg_master()
	md: don't flush workqueue unconditionally in md_open
	mwifiex: Fix memory corruption in dump_station
	mips: Add udelay lpj numbers adjustment
	x86/mm: Stop printing BRK addresses
	m68k: mac: Don't call via_flush_cache() on Mac IIfx
	macvlan: Skip loopback packets in RX handler
	PCI: Don't disable decoding when mmio_always_on is set
	MIPS: Fix IRQ tracing when call handle_fpe() and handle_msa_fpe()
	ixgbe: fix signed-integer-overflow warning
	spi: dw: Return any value retrieved from the dma_transfer callback
	cpuidle: Fix three reference count leaks
	ima: Fix ima digest hash table key calculation
	ext4: fix EXT_MAX_EXTENT/INDEX to check for zeroed eh_max
	Btrfs: fix unreplayable log after snapshot delete + parent dir fsync
	btrfs: send: emit file capabilities after chown
	btrfs: fix error handling when submitting direct I/O bio
	ima: Directly assign the ima_default_policy pointer to ima_rules
	PCI: Program MPS for RCiEP devices
	e1000e: Relax condition to trigger reset for ME workaround
	carl9170: remove P2P_GO support
	media: go7007: fix a miss of snd_card_free
	b43legacy: Fix case where channel status is corrupted
	b43: Fix connection problem with WPA3
	b43_legacy: Fix connection problem with WPA3
	igb: Report speed and duplex as unknown when device is runtime suspended
	power: vexpress: add suppress_bind_attrs to true
	pinctrl: samsung: Save/restore eint_mask over suspend for EINT_TYPE GPIOs
	sparc32: fix register window handling in genregs32_[gs]et()
	kernel/cpu_pm: Fix uninitted local in cpu_pm
	ARM: tegra: Correct PL310 Auxiliary Control Register initialization
	drivers/macintosh: Fix memleak in windfarm_pm112 driver
	kbuild: force to build vmlinux if CONFIG_MODVERSION=y
	sunrpc: svcauth_gss_register_pseudoflavor must reject duplicate registrations.
	sunrpc: clean up properly in gss_mech_unregister()
	w1: omap-hdq: cleanup to add missing newline for some dev_dbg
	perf probe: Do not show the skipped events
	perf symbols: Fix debuginfo search for Ubuntu
	Linux 4.4.228

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ice915aaa684101ec7e774ccf43bfb533f84b4740

1 files changed, 67 insertions, 0 deletions

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index f35884a431c1..de0ebb3b3cd3 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -34,6 +34,7 @@
 #include "disk-io.h"
 #include "btrfs_inode.h"
 #include "transaction.h"
+#include "xattr.h"
 
 static int g_verbose = 0;
 
@@ -4194,6 +4195,10 @@ static int __process_new_xattr(int num, struct btrfs_key *di_key,
 	struct fs_path *p;
 	posix_acl_xattr_header dummy_acl;
 
+	/* Capabilities are emitted by finish_inode_if_needed */
+	if (!strncmp(name, XATTR_NAME_CAPS, name_len))
+		return 0;
+
 	p = fs_path_alloc();
 	if (!p)
 		return -ENOMEM;
@@ -4733,6 +4738,64 @@ static int send_extent_data(struct send_ctx *sctx,
 	return 0;
 }
 
+/*
+ * Search for a capability xattr related to sctx->cur_ino. If the capability is
+ * found, call send_set_xattr function to emit it.
+ *
+ * Return 0 if there isn't a capability, or when the capability was emitted
+ * successfully, or < 0 if an error occurred.
+ */
+static int send_capabilities(struct send_ctx *sctx)
+{
+	struct fs_path *fspath = NULL;
+	struct btrfs_path *path;
+	struct btrfs_dir_item *di;
+	struct extent_buffer *leaf;
+	unsigned long data_ptr;
+	char *buf = NULL;
+	int buf_len;
+	int ret = 0;
+
+	path = alloc_path_for_send();
+	if (!path)
+		return -ENOMEM;
+
+	di = btrfs_lookup_xattr(NULL, sctx->send_root, path, sctx->cur_ino,
+				XATTR_NAME_CAPS, strlen(XATTR_NAME_CAPS), 0);
+	if (!di) {
+		/* There is no xattr for this inode */
+		goto out;
+	} else if (IS_ERR(di)) {
+		ret = PTR_ERR(di);
+		goto out;
+	}
+
+	leaf = path->nodes[0];
+	buf_len = btrfs_dir_data_len(leaf, di);
+
+	fspath = fs_path_alloc();
+	buf = kmalloc(buf_len, GFP_KERNEL);
+	if (!fspath || !buf) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	ret = get_cur_path(sctx, sctx->cur_ino, sctx->cur_inode_gen, fspath);
+	if (ret < 0)
+		goto out;
+
+	data_ptr = (unsigned long)(di + 1) + btrfs_dir_name_len(leaf, di);
+	read_extent_buffer(leaf, buf, data_ptr, buf_len);
+
+	ret = send_set_xattr(sctx, fspath, XATTR_NAME_CAPS,
+			strlen(XATTR_NAME_CAPS), buf, buf_len);
+out:
+	kfree(buf);
+	fs_path_free(fspath);
+	btrfs_free_path(path);
+	return ret;
+}
+
 static int clone_range(struct send_ctx *sctx,
 		       struct clone_root *clone_root,
 		       const u64 disk_byte,
@@ -5444,6 +5507,10 @@ static int finish_inode_if_needed(struct send_ctx *sctx, int at_end)
 			goto out;
 	}
 
+	ret = send_capabilities(sctx);
+	if (ret < 0)
+		goto out;
+
 	/*
 	 * If other directory inodes depended on our current directory
 	 * inode's move/rename, now do their move/rename operations.