Paulo Alcantara (SUSE) 68ddb49680 cifs: Fix slab-out-of-bounds when tracing SMB tcon ... This patch fixes the following KASAN report: [ 779.044746] BUG: KASAN: slab-out-of-bounds in string+0xab/0x180 [ 779.044750] Read of size 1 at addr ffff88814f327968 by task trace-cmd/2812 [ 779.044756] CPU: 1 PID: 2812 Comm: trace-cmd Not tainted 5.1.0-rc1+ #62 [ 779.044760] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-0-ga698c89-prebuilt.qemu.org 04/01/2014 [ 779.044761] Call Trace: [ 779.044769] dump_stack+0x5b/0x90 [ 779.044775] ? string+0xab/0x180 [ 779.044781] print_address_description+0x6c/0x23c [ 779.044787] ? string+0xab/0x180 [ 779.044792] ? string+0xab/0x180 [ 779.044797] kasan_report.cold.3+0x1a/0x32 [ 779.044803] ? string+0xab/0x180 [ 779.044809] string+0xab/0x180 [ 779.044816] ? widen_string+0x160/0x160 [ 779.044822] ? vsnprintf+0x5bf/0x7f0 [ 779.044829] vsnprintf+0x4e7/0x7f0 [ 779.044836] ? pointer+0x4a0/0x4a0 [ 779.044841] ? seq_buf_vprintf+0x79/0xc0 [ 779.044848] seq_buf_vprintf+0x62/0xc0 [ 779.044855] trace_seq_printf+0x113/0x210 [ 779.044861] ? trace_seq_puts+0x110/0x110 [ 779.044867] ? trace_raw_output_prep+0xd8/0x110 [ 779.044876] trace_raw_output_smb3_tcon_class+0x9f/0xc0 [ 779.044882] print_trace_line+0x377/0x890 [ 779.044888] ? tracing_buffers_read+0x300/0x300 [ 779.044893] ? ring_buffer_read+0x58/0x70 [ 779.044899] s_show+0x6e/0x140 [ 779.044906] seq_read+0x505/0x6a0 [ 779.044913] vfs_read+0xaf/0x1b0 [ 779.044919] ksys_read+0xa1/0x130 [ 779.044925] ? kernel_write+0xa0/0xa0 [ 779.044931] ? __do_page_fault+0x3d5/0x620 [ 779.044938] do_syscall_64+0x63/0x150 [ 779.044944] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 779.044949] RIP: 0033:0x7f62c2c2db31 [ 779.044955] Code: fe ff ff 48 8d 3d 17 9e 09 00 48 83 ec 08 e8 96 02 02 00 66 0f 1f 44 00 00 8b 05 fa fc 2c 00 48 63 ff 85 c0 75 13 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 57 f3 c3 0f 1f 44 00 00 55 53 48 89 d5 48 89 [ 779.044958] RSP: 002b:00007ffd6e116678 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 779.044964] RAX: ffffffffffffffda RBX: 0000560a38be9260 RCX: 00007f62c2c2db31 [ 779.044966] RDX: 0000000000002000 RSI: 00007ffd6e116710 RDI: 0000000000000003 [ 779.044966] RDX: 0000000000002000 RSI: 00007ffd6e116710 RDI: 0000000000000003 [ 779.044969] RBP: 00007f62c2ef5420 R08: 0000000000000000 R09: 0000000000000003 [ 779.044972] R10: ffffffffffffffa8 R11: 0000000000000246 R12: 00007ffd6e116710 [ 779.044975] R13: 0000000000002000 R14: 0000000000000d68 R15: 0000000000002000 [ 779.044981] Allocated by task 1257: [ 779.044987] __kasan_kmalloc.constprop.5+0xc1/0xd0 [ 779.044992] kmem_cache_alloc+0xad/0x1a0 [ 779.044997] getname_flags+0x6c/0x2a0 [ 779.045003] user_path_at_empty+0x1d/0x40 [ 779.045008] do_faccessat+0x12a/0x330 [ 779.045012] do_syscall_64+0x63/0x150 [ 779.045017] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 779.045019] Freed by task 1257: [ 779.045023] __kasan_slab_free+0x12e/0x180 [ 779.045029] kmem_cache_free+0x85/0x1b0 [ 779.045034] filename_lookup.part.70+0x176/0x250 [ 779.045039] do_faccessat+0x12a/0x330 [ 779.045043] do_syscall_64+0x63/0x150 [ 779.045048] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 779.045052] The buggy address belongs to the object at ffff88814f326600 which belongs to the cache names_cache of size 4096 [ 779.045057] The buggy address is located 872 bytes to the right of 4096-byte region [ffff88814f326600, ffff88814f327600) [ 779.045058] The buggy address belongs to the page: [ 779.045062] page:ffffea00053cc800 count:1 mapcount:0 mapping:ffff88815b191b40 index:0x0 compound_mapcount: 0 [ 779.045067] flags: 0x200000000010200(slab|head) [ 779.045075] raw: 0200000000010200 dead000000000100 dead000000000200 ffff88815b191b40 [ 779.045081] raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000 [ 779.045083] page dumped because: kasan: bad access detected [ 779.045085] Memory state around the buggy address: [ 779.045089] ffff88814f327800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 779.045093] ffff88814f327880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 779.045097] >ffff88814f327900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 779.045099] ^ [ 779.045103] ffff88814f327980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 779.045107] ffff88814f327a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 779.045109] ================================================================== [ 779.045110] Disabling lock debugging due to kernel taint Correctly assign tree name str for smb3_tcon event. Signed-off-by: Paulo Alcantara (SUSE) <paulo@paulo.ac> Signed-off-by: Steve French <stfrench@microsoft.com>		2019-03-22 22:36:54 -05:00
..
9p	Pull request for inlusion in 5.1	2019-03-17 09:10:56 -07:00
adfs	adfs: use timespec64 for time conversion	2018-08-22 10:52:51 -07:00
affs
afs	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 14:08:19 -07:00
autofs	autofs: clear O_NONBLOCK on the pipe	2019-03-07 18:32:01 -08:00
befs
bfs	bfs: extra sanity checking and static inode bitmap	2019-01-04 13:13:47 -08:00
btrfs	for-5.1-part2-tag	2019-03-12 14:53:57 -07:00
cachefiles	fscache, cachefiles: remove redundant variable 'cache'	2018-11-30 16:00:58 +00:00
ceph	ceph: add mount option to limit caps count	2019-03-05 18:55:17 +01:00
cifs	cifs: Fix slab-out-of-bounds when tracing SMB tcon	2019-03-22 22:36:54 -05:00
coda
configfs
cramfs	Make the Cramfs code more robust against filesystem corruptions,	2018-10-30 12:46:25 -07:00
crypto	fscrypt updates for v5.1	2019-03-09 10:54:24 -08:00
debugfs	Merge 5.0-rc6 into driver-core-next	2019-02-11 09:09:02 +01:00
devpts	fs/devpts: always delete dcache dentry-s in dput()	2019-01-24 13:38:30 -05:00
dlm	socket: Rename SO_RCVTIMEO/ SO_SNDTIMEO with _OLD suffixes	2019-02-03 11:17:31 -08:00
ecryptfs	crypto: clarify name of WEAK_KEY request flag	2019-01-25 18:41:52 +08:00
efivarfs
efs
exportfs	exportfs: do not read dentry after free	2018-11-23 09:08:17 -05:00
ext2	\n	2019-03-07 09:01:33 -08:00
ext4	A large number of bug fixes and cleanups. One new feature to allow	2019-03-12 15:03:21 -07:00
f2fs	f2fs-for-5.1-rc1	2019-03-15 13:42:53 -07:00
fat	fat: enable .splice_write to support splice on O_DIRECT file	2019-03-07 18:32:01 -08:00
freevxfs
fscache	fscache: fix race between enablement and dropping of object	2018-11-30 15:57:31 +00:00
fuse	fuse update for 5.1	2019-03-12 14:46:26 -07:00
gfs2	We've only got three patches ready for this merge window:	2019-03-09 11:52:11 -08:00
hfs	hfs: do not free node before using	2018-11-30 14:56:14 -08:00
hfsplus	hfsplus: return file attributes on statx	2019-01-04 13:13:47 -08:00
hostfs	vfs: discard ATTR_ATTR_FLAG	2018-08-17 16:20:28 -07:00
hpfs	hpfs: fix spelling mistake "partion" -> "partition"	2019-03-12 09:58:03 -07:00
hugetlbfs	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 14:08:19 -07:00
isofs	Update email address	2018-09-29 22:47:48 -04:00
jbd2	jbd2: jbd2_get_transaction does not need to return a value	2019-03-01 00:36:57 -05:00
jffs2	jffs2: Fix use of uninitialized delayed_work, lockdep breakage	2018-12-02 09:20:34 +01:00
jfs	jfs: remove redundant dquot_initialize() in jfs_evict_inode()	2018-09-20 09:28:49 -05:00
kernfs	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 14:08:19 -07:00
lockd	NFS: Remove print_overflow_msg()	2019-02-13 11:53:45 -05:00
minix
nfs	pNFS: Fix a typo in pnfs_update_layout	2019-03-12 16:04:51 -04:00
nfs_common
nfsd	Miscellaneous NFS server fixes. Probably the most visible bug is one	2019-03-12 15:06:54 -07:00
nilfs2	XArray: Change xa_insert to return -EBUSY	2019-02-06 13:12:15 -05:00
nls
notify	fanotify: Allow copying of file handle to userspace	2019-03-19 09:29:07 +01:00
ntfs	mm: convert totalram_pages and totalhigh_pages variables to atomic	2018-12-28 12:11:47 -08:00
ocfs2	ocfs2: Use zero-sized array and struct_size() in kzalloc()	2019-03-05 21:07:13 -08:00
omfs
openpromfs	fs/openpromfs: Use of_node_name_eq for node name comparisons	2018-11-18 13:35:19 -08:00
orangefs	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 13:27:20 -07:00
overlayfs	ovl: Do not lose security.capability xattr over metadata file copy-up	2019-02-13 11:14:46 +01:00
proc	pidfd patches for v5.1-rc1	2019-03-16 13:47:14 -07:00
pstore	pstore/ram: Avoid needless alloc during header write	2019-02-12 13:45:53 -08:00
qnx4
qnx6
quota	quota: Lock s_umount in exclusive mode for Q_XQUOTA{ON,OFF} quotactls.	2018-12-18 18:29:15 +01:00
ramfs
reiserfs	reiserfs: remove workaround code for GCC 3.x	2018-10-31 08:54:14 -07:00
romfs
squashfs
sysfs	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-16 10:31:02 -07:00
sysv	sysv: return 'err' instead of 0 in __sysv_write_inode	2018-11-10 08:02:40 -05:00
tracefs
ubifs	This pull request contains updates for both UBI and UBIFS:	2019-03-13 09:34:35 -07:00
udf	udf: Propagate errors from udf_truncate_extents()	2019-03-18 16:30:02 +01:00
ufs	fs/ufs: use ktime_get_real_seconds for sb and cg timestamps	2018-08-17 16:20:27 -07:00
xfs	Changes since last update:	2019-03-15 13:55:30 -07:00
aio.c	Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-03-05 14:08:26 -08:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c	a.out: remove core dumping support	2019-03-05 10:00:35 -08:00
binfmt_elf_fdpic.c
binfmt_elf.c	fs/binfmt_elf.c: spread const a little	2019-03-07 18:32:01 -08:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c	exec: load_script: Do not exec truncated interpreter path	2019-02-18 16:49:36 -08:00
block_dev.c	block: add bio_set_polled() helper	2019-02-24 08:20:17 -07:00
buffer.c	fs: fix guard_bio_eod to check for real EOD errors	2019-02-28 13:59:41 -07:00
char_dev.c
compat_binfmt_elf.c	y2038: globally rename compat_time to old_time32	2018-08-27 14:48:48 +02:00
compat_ioctl.c	media updates for v4.20-rc1	2018-10-29 14:29:58 -07:00
compat.c
coredump.c	signal: Distinguish between kernel_siginfo and siginfo	2018-10-03 16:47:43 +02:00
d_path.c
dax.c	dax: Flush partial PMDs correctly	2019-03-01 17:24:48 -08:00
dcache.c	fs/dcache: Track & report number of negative dentries	2019-01-30 11:02:11 -08:00
dcookies.c
direct-io.c	block: allow bio_for_each_segment_all() to iterate over multi-page bvec	2019-02-15 08:40:11 -07:00
drop_caches.c	fs/drop_caches.c: avoid softlockups in drop_pagecache_sb()	2019-02-01 15:46:24 -08:00
eventfd.c
eventpoll.c	epoll: use rwlock in order to reduce ep_poll_callback() contention	2019-03-07 18:32:01 -08:00
exec.c	exec: increase BINPRM_BUF_SIZE to 256	2019-03-07 18:32:01 -08:00
fcntl.c	signal: Distinguish between kernel_siginfo and siginfo	2018-10-03 16:47:43 +02:00
fhandle.c
file_table.c	fs: add fget_many() and fput_many()	2019-02-28 08:24:23 -07:00
file.c	io_uring-2019-03-06	2019-03-08 14:48:40 -08:00
filesystems.c	vfs: Implement a filesystem superblock creation/configuration context	2019-02-28 03:29:26 -05:00
fs_context.c	vfs: Implement logging through fs_context	2019-02-28 03:29:37 -05:00
fs_parser.c	vfs: Add configuration parser helpers	2019-02-28 03:28:53 -05:00
fs_pin.c
fs_struct.c
fs_types.c	fs: common implementation of file type	2019-01-21 17:48:13 +01:00
fs-writeback.c	writeback: synchronize sync(2) against cgroup writeback membership switches	2019-01-22 14:39:38 -07:00
inode.c	fs/inode.c: inode_set_flags(): replace opencoded set_mask_bits()	2019-03-05 21:07:13 -08:00
internal.h	vfs: Add configuration parser helpers	2019-02-28 03:28:53 -05:00
io_uring.c	mm: refactor readahead defines in mm.h	2019-03-12 10:04:01 -07:00
ioctl.c	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
iomap.c	iomap: wire up the iopoll method	2019-02-24 08:20:17 -07:00
Kconfig	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 14:08:19 -07:00
Kconfig.binfmt
libfs.c
locks.c	locking/percpu-rwsem: Remove preempt_disable variants	2019-02-28 07:55:37 +01:00
Makefile	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 14:08:19 -07:00
mbcache.c
mount.h	saner handling of temporary namespaces	2019-01-30 17:44:07 -05:00
mpage.c	block: allow bio_for_each_segment_all() to iterate over multi-page bvec	2019-02-15 08:40:11 -07:00
namei.c	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 14:08:19 -07:00
namespace.c	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 14:08:19 -07:00
no-block.c
nsfs.c
open.c	overlayfs update for 4.19	2018-08-21 18:19:09 -07:00
pipe.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 13:27:20 -07:00
pnode.c	separate copying and locking mount tree on cross-userns copies	2019-01-30 17:14:50 -05:00
pnode.h	separate copying and locking mount tree on cross-userns copies	2019-01-30 17:14:50 -05:00
posix_acl.c
proc_namespace.c
read_write.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 13:27:20 -07:00
readdir.c	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
select.c	y2038: syscalls: rename y2038 compat syscalls	2019-02-07 00:13:27 +01:00
seq_file.c	fs/seq_file.c: simplify seq_file iteration code and interface	2018-08-17 16:20:28 -07:00
signalfd.c	signal: Distinguish between kernel_siginfo and siginfo	2018-10-03 16:47:43 +02:00
splice.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 13:27:20 -07:00
stack.c
stat.c	fs: move generic stat response attr handling to vfs_getattr_nosec	2019-02-01 01:55:45 -05:00
statfs.c	vfs: add vfs_get_fsid() helper	2019-02-07 16:38:35 +01:00
super.c	vfs: Add some logging to the core users of the fs_context log	2019-02-28 03:29:38 -05:00
sync.c
timerfd.c	y2038: syscalls: rename y2038 compat syscalls	2019-02-07 00:13:27 +01:00
userfaultfd.c	userfaultfd: clear flag if remap event not enabled	2018-12-28 12:11:51 -08:00
utimes.c	y2038: syscalls: rename y2038 compat syscalls	2019-02-07 00:13:27 +01:00
xattr.c	sysfs: Do not return POSIX ACL xattrs via listxattr	2018-09-18 07:30:48 -04:00