linux_dsm_epyc7002/fs
Darrick J. Wong 5bd88d1539 xfs: recheck reflink state after grabbing ILOCK_SHARED for a write
The reflink iflag could have changed since the earlier unlocked check,
so if we got ILOCK_SHARED for a write and but we're now a reflink inode
we have to switch to ILOCK_EXCL and relock.

This helps us avoid blowing lock assertions in things like generic/166:

XFS: Assertion failed: xfs_isilocked(ip, XFS_ILOCK_EXCL), file: fs/xfs/xfs_reflink.c, line: 383
WARNING: CPU: 1 PID: 24707 at fs/xfs/xfs_message.c:104 assfail+0x25/0x30 [xfs]
Modules linked in: deadline_iosched dm_snapshot dm_bufio ext4 mbcache jbd2 dm_flakey xfs libcrc32c dax_pmem device_dax nd_pmem sch_fq_codel af_packet [last unloaded: scsi_debug]
CPU: 1 PID: 24707 Comm: xfs_io Not tainted 4.18.0-rc1-djw #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.10.2-1ubuntu1 04/01/2014
RIP: 0010:assfail+0x25/0x30 [xfs]
Code: ff 0f 0b c3 90 66 66 66 66 90 48 89 f1 41 89 d0 48 c7 c6 e8 ef 1b a0 48 89 fa 31 ff e8 54 f9 ff ff 80 3d fd ba 0f 00 00 75 03 <0f> 0b c3 0f 0b 66 0f 1f 44 00 00 66 66 66 66 90 48 63 f6 49 89 f9
RSP: 0018:ffffc90006423ad8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff880030b65e80 RCX: 0000000000000000
RDX: 00000000ffffffc0 RSI: 000000000000000a RDI: ffffffffa01b0447
RBP: ffffc90006423c10 R08: 0000000000000000 R09: 0000000000000000
R10: ffff88003d43fc30 R11: f000000000000000 R12: ffff880077cda000
R13: 0000000000000000 R14: ffffc90006423c30 R15: ffffc90006423bf9
FS:  00007feba8986800(0000) GS:ffff88003ec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000138ab58 CR3: 000000003d40a000 CR4: 00000000000006a0
Call Trace:
 xfs_reflink_allocate_cow+0x24c/0x3d0 [xfs]
 xfs_file_iomap_begin+0x6d2/0xeb0 [xfs]
 ? iomap_to_fiemap+0x80/0x80
 iomap_apply+0x5e/0x130
 iomap_dio_rw+0x2e0/0x400
 ? iomap_to_fiemap+0x80/0x80
 ? xfs_file_dio_aio_write+0x133/0x4a0 [xfs]
 xfs_file_dio_aio_write+0x133/0x4a0 [xfs]
 xfs_file_write_iter+0x7b/0xb0 [xfs]
 __vfs_write+0x16f/0x1f0
 vfs_write+0xc8/0x1c0
 ksys_pwrite64+0x74/0x90
 do_syscall_64+0x56/0x180
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
2018-06-24 11:56:36 -07:00
..
9p treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
adfs vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
affs affs: fix potential memory leak when parsing option 'prefix' 2018-05-28 12:36:41 +02:00
afs Merge branch 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-16 16:32:04 +09:00
autofs autofs: Fix typo s/thenew new/the new/ in AUTOFS4_FS description 2018-06-12 12:31:19 -07:00
befs fix a series of Documentation/ broken file name references 2018-06-15 18:10:01 -03:00
bfs bfs_add_entry: pass name/len as qstr pointer 2018-05-22 14:27:50 -04:00
btrfs vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
cachefiles Merge branch 'hch.procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 10:00:01 -07:00
ceph vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
cifs vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
coda vfs: change inode times to use struct timespec64 2018-06-05 16:57:31 -07:00
configfs vfs: change inode times to use struct timespec64 2018-06-05 16:57:31 -07:00
cramfs vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
crypto f2fs-for-4.18-rc1 2018-06-11 10:16:13 -07:00
debugfs Revert "debugfs: inode: debugfs_create_dir uses mode permission from parent" 2018-06-12 20:52:16 -07:00
devpts devpts: comment devpts_mntget() 2018-03-14 13:31:23 +01:00
dlm treewide: Use array_size() in vmalloc() 2018-06-12 16:19:22 -07:00
ecryptfs Merge branch 'fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs into aio-base 2018-05-26 09:16:25 +02:00
efivarfs efivarfs: Limit the rate for non-root to read files 2018-02-22 10:21:02 -08:00
efs
exofs exofs: avoid VLA in structures 2018-06-15 07:55:24 +09:00
exportfs ovl: do not try to reconnect a disconnected origin dentry 2018-04-12 12:04:49 +02:00
ext2 treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
ext4 vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
f2fs vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
fat Merge branch 'akpm' (patches from Andrew) 2018-06-15 08:51:42 +09:00
freevxfs freevxfs_lookup(): use d_splice_alias() 2018-05-22 14:27:51 -04:00
fscache proc: introduce proc_create_single{,_data} 2018-05-16 07:23:35 +02:00
fuse vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
gfs2 vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
hfs vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
hfsplus vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
hostfs vfs: change inode times to use struct timespec64 2018-06-05 16:57:31 -07:00
hpfs treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
hugetlbfs hugetlbfs: fix bug in pgoff overflow checking 2018-04-05 21:36:21 -07:00
isofs isofs: fix potential memory leak in mount option parsing 2018-04-16 09:47:41 +02:00
jbd2 treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
jffs2 vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
jfs treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
kernfs vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
lockd net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
minix minix_lookup: use d_splice_alias() 2018-05-22 14:27:52 -04:00
nfs vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
nfs_common net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
nfsd vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
nilfs2 do d_instantiate/unlock_new_inode combinations safely 2018-05-11 15:36:37 -04:00
nls
notify fsnotify: add fsnotify_add_inode_mark() wrappers 2018-05-18 14:58:22 +02:00
ntfs vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
ocfs2 vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
omfs omfs_lookup(): report IO errors, use d_splice_alias() 2018-05-22 14:27:58 -04:00
openpromfs openpromfs: switch to d_splice_alias() 2018-05-22 14:27:57 -04:00
orangefs Solve a series of broken links for files under Documentation: 2018-06-17 05:25:18 +09:00
overlayfs vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
proc Merge branch 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-16 16:32:04 +09:00
pstore pstore: Remove bogus format string definition 2018-06-14 14:57:24 +02:00
qnx4 qnx4_lookup: use d_splice_alias() 2018-05-22 14:27:52 -04:00
qnx6 qnx6_lookup: switch to d_splice_alias() 2018-05-22 14:27:54 -04:00
quota fs: quota: Replace GFP_ATOMIC with GFP_KERNEL in dquot_init 2018-04-09 17:48:54 +02:00
ramfs
reiserfs vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
romfs romfs_lookup: switch to d_splice_alias() 2018-05-22 14:27:55 -04:00
squashfs
sysfs unfuck sysfs_mount() 2018-05-21 14:30:09 -04:00
sysv sysv_lookup: use d_splice_alias() 2018-05-22 14:27:53 -04:00
tracefs
ubifs vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
udf vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
ufs treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
xfs xfs: recheck reflink state after grabbing ILOCK_SHARED for a write 2018-06-24 11:56:36 -07:00
aio.c aio: only return events requested in poll_mask() for IOCB_CMD_POLL 2018-06-14 20:08:14 -04:00
anon_inodes.c
attr.c vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
bad_inode.c vfs: change inode times to use struct timespec64 2018-06-05 16:57:31 -07:00
binfmt_aout.c exec: introduce finalize_exec() before start_thread() 2018-04-11 10:28:37 -07:00
binfmt_elf_fdpic.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
binfmt_elf.c coredump: fix spam with zero VMA process 2018-06-15 07:55:24 +09:00
binfmt_em86.c
binfmt_flat.c exec: introduce finalize_exec() before start_thread() 2018-04-11 10:28:37 -07:00
binfmt_misc.c docs: Fix more broken references 2018-06-15 18:11:26 -03:00
binfmt_script.c
block_dev.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
buffer.c fs: move page_cache_seek_hole_data to iomap.c 2018-06-01 18:37:33 -07:00
char_dev.c block, char_dev: Use correct format specifier for unsigned ints 2018-03-15 17:59:24 +01:00
compat_binfmt_elf.c
compat_ioctl.c autofs: clean up includes 2018-06-07 17:34:40 -07:00
compat.c ncpfs: remove compat functionality 2018-06-05 19:23:26 +02:00
coredump.c
d_path.c split d_path() and friends into a separate file 2018-03-29 15:07:46 -04:00
dax.c libnvdimm for 4.18 2018-06-08 17:21:52 -07:00
dcache.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 10:14:28 -07:00
dcookies.c fs: add do_lookup_dcookie() helper; remove in-kernel call to syscall 2018-04-02 20:15:39 +02:00
direct-io.c block: consistently use GFP_NOIO instead of __GFP_NORECLAIM 2018-05-14 08:55:18 -06:00
drop_caches.c
eventfd.c eventfd: only return events requested in poll_mask() 2018-06-14 20:07:38 -04:00
eventpoll.c eventpoll: switch to ->poll_mask 2018-06-14 20:09:28 -04:00
exec.c Merge branch 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-06-10 10:17:09 -07:00
fcntl.c mm: restructure memfd code 2018-06-07 17:34:35 -07:00
fhandle.c
file_table.c
file.c fs: add ksys_close() wrapper; remove in-kernel calls to sys_close() 2018-04-02 20:16:00 +02:00
filesystems.c proc: introduce proc_create_single{,_data} 2018-05-16 07:23:35 +02:00
fs_pin.c
fs_struct.c
fs-writeback.c bdi: Fix oops in wb_workfn() 2018-05-03 16:11:37 -06:00
inode.c vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
internal.h Revert "fs: fold open_check_o_direct into do_dentry_open" 2018-06-03 10:58:23 -07:00
ioctl.c fs: Allow CAP_SYS_ADMIN in s_user_ns to freeze and thaw filesystems 2018-05-24 12:04:28 -05:00
iomap.c Changes since last update: 2018-06-12 15:49:00 -07:00
Kconfig autofs: remove left-over autofs4 stubs 2018-06-11 08:22:34 -07:00
Kconfig.binfmt docs: Fix more broken references 2018-06-15 18:11:26 -03:00
libfs.c fs, dax: prepare for dax-specific address_space_operations 2018-03-30 11:34:55 -07:00
locks.c vfs/y2038: inode timestamps conversion to timespec64 2018-06-15 07:31:07 +09:00
Makefile autofs: remove left-over autofs4 stubs 2018-06-11 08:22:34 -07:00
mbcache.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
mount.h
mpage.c
namei.c Merge branch 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-16 16:32:04 +09:00
namespace.c fs: Allow superblock owner to access do_remount_sb() 2018-05-24 12:02:25 -05:00
no-block.c
nsfs.c net: Export open_related_ns() 2018-02-15 15:34:42 -05:00
open.c Revert "fs: fold open_check_o_direct into do_dentry_open" 2018-06-03 10:58:23 -07:00
pipe.c pipe: convert to ->poll_mask 2018-05-26 09:16:44 +02:00
pnode.c
pnode.h
posix_acl.c
proc_namespace.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
read_write.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
readdir.c fs: add ksys_getdents64() helper; remove in-kernel calls to sys_getdents64() 2018-04-02 20:16:02 +02:00
select.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
seq_file.c proc: fix smaps and meminfo alignment 2018-05-25 18:12:11 -07:00
signalfd.c Merge branch 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-16 16:21:50 +09:00
splice.c Merge branch 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-16 16:21:50 +09:00
stack.c
stat.c fs: add do_readlinkat() helper; remove internal call to sys_readlinkat() 2018-04-02 20:15:34 +02:00
statfs.c
super.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 10:14:28 -07:00
sync.c Changes for this release: 2018-04-04 12:44:02 -07:00
timerfd.c timerfd: convert to ->poll_mask 2018-05-26 09:16:44 +02:00
userfaultfd.c userfaultfd: prevent non-cooperative events vs mcopy_atomic races 2018-06-07 17:34:38 -07:00
utimes.c fs: add do_compat_futimesat() helper; remove in-kernel call to compat syscall 2018-04-02 20:15:44 +02:00
xattr.c vfs: delete unnecessary assignment in vfs_listxattr 2018-05-29 13:22:41 -04:00