======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz-executor/4194 is trying to acquire lock:
ffff88805fe789c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
ffff88805fe789c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_remove_inode fs/ocfs2/inode.c:655 [inline]
ffff88805fe789c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:818 [inline]
ffff88805fe789c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1079 [inline]
ffff88805fe789c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_evict_inode+0x1d72/0x41d0 fs/ocfs2/inode.c:1216
but task is already holding lock:
ffff88805fe75f48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
ffff88805fe75f48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:776 [inline]
ffff88805fe75f48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1079 [inline]
ffff88805fe75f48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_evict_inode+0x2d12/0x41d0 fs/ocfs2/inode.c:1216
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}:
down_write+0x38/0x60 kernel/locking/rwsem.c:1551
inode_lock include/linux/fs.h:787 [inline]
ocfs2_del_inode_from_orphan+0x12b/0x7a0 fs/ocfs2/namei.c:2713
ocfs2_dio_end_io_write fs/ocfs2/aops.c:2407 [inline]
ocfs2_dio_end_io+0x103a/0x13c0 fs/ocfs2/aops.c:2446
dio_complete+0x249/0x720 fs/direct-io.c:272
do_blockdev_direct_IO fs/direct-io.c:1336 [inline]
__blockdev_direct_IO+0x2e31/0x3a70 fs/direct-io.c:1368
ocfs2_direct_IO+0x233/0x2a0 fs/ocfs2/aops.c:2483
generic_file_direct_write+0x22c/0x490 mm/filemap.c:3687
__generic_file_write_iter+0x2b1/0x4e0 mm/filemap.c:3869
ocfs2_file_write_iter+0x1670/0x1e70 fs/ocfs2/file.c:2472
do_iter_readv_writev+0x47e/0x5f0 fs/read_write.c:-1
do_iter_write+0x205/0x7b0 fs/read_write.c:855
iter_file_splice_write+0x699/0xcc0 fs/splice.c:689
do_splice_from fs/splice.c:767 [inline]
direct_splice_actor+0xe1/0x130 fs/splice.c:956
splice_direct_to_actor+0x4ea/0xc10 fs/splice.c:902
do_splice_direct+0x1d4/0x2f0 fs/splice.c:1008
do_sendfile+0x5fc/0xeb0 fs/read_write.c:1249
__do_sys_sendfile64 fs/read_write.c:1317 [inline]
__se_sys_sendfile64+0x141/0x1a0 fs/read_write.c:1303
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
-> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}:
down_write+0x38/0x60 kernel/locking/rwsem.c:1551
inode_lock include/linux/fs.h:787 [inline]
ocfs2_reserve_suballoc_bits+0x16a/0x44d0 fs/ocfs2/suballoc.c:782
ocfs2_reserve_new_metadata_blocks+0x412/0x9a0 fs/ocfs2/suballoc.c:978
ocfs2_mknod+0xecc/0x2510 fs/ocfs2/namei.c:347
ocfs2_create+0x192/0x420 fs/ocfs2/namei.c:674
lookup_open fs/namei.c:3470 [inline]
open_last_lookups fs/namei.c:3540 [inline]
path_openat+0x11db/0x2fa0 fs/namei.c:3747
do_filp_open+0x1e2/0x410 fs/namei.c:3777
do_sys_openat2+0x150/0x4b0 fs/open.c:1255
do_sys_open fs/open.c:1271 [inline]
__do_sys_openat fs/open.c:1287 [inline]
__se_sys_openat fs/open.c:1282 [inline]
__x64_sys_openat+0x135/0x160 fs/open.c:1282
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
-> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire+0x2c42/0x7d10 kernel/locking/lockdep.c:5012
lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623
down_write+0x38/0x60 kernel/locking/rwsem.c:1551
inode_lock include/linux/fs.h:787 [inline]
ocfs2_remove_inode fs/ocfs2/inode.c:655 [inline]
ocfs2_wipe_inode fs/ocfs2/inode.c:818 [inline]
ocfs2_delete_inode fs/ocfs2/inode.c:1079 [inline]
ocfs2_evict_inode+0x1d72/0x41d0 fs/ocfs2/inode.c:1216
evict+0x4c9/0x8d0 fs/inode.c:647
d_delete_notify include/linux/fsnotify.h:267 [inline]
vfs_rmdir+0x3b4/0x430 fs/namei.c:4170
do_rmdir+0x2a1/0x740 fs/namei.c:4218
__do_sys_unlinkat fs/namei.c:4398 [inline]
__se_sys_unlinkat fs/namei.c:4392 [inline]
__x64_sys_unlinkat+0xc0/0xe0 fs/namei.c:4392
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
other info that might help us debug this:
Chain exists of:
&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2 --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3 --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]);
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3);
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]);
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2);
*** DEADLOCK ***
4 locks held by syz-executor/4194:
#0: ffff88807ddc2460 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:386
#1: ffff88805fe709c8 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline]
#1: ffff88805fe709c8 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: do_rmdir+0x1c1/0x740 fs/namei.c:4205
#2: ffff888075798ab0 (&osb->nfs_sync_rwlock){.+.+}-{3:3}, at: ocfs2_nfs_sync_lock+0x103/0x270 fs/ocfs2/dlmglue.c:2874
#3: ffff88805fe75f48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
#3: ffff88805fe75f48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:776 [inline]
#3: ffff88805fe75f48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1079 [inline]
#3: ffff88805fe75f48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_evict_inode+0x2d12/0x41d0 fs/ocfs2/inode.c:1216
stack backtrace:
CPU: 0 PID: 4194 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
<TASK>
dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
check_noncircular+0x296/0x330 kernel/locking/lockdep.c:2133
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire+0x2c42/0x7d10 kernel/locking/lockdep.c:5012
lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623
down_write+0x38/0x60 kernel/locking/rwsem.c:1551
inode_lock include/linux/fs.h:787 [inline]
ocfs2_remove_inode fs/ocfs2/inode.c:655 [inline]
ocfs2_wipe_inode fs/ocfs2/inode.c:818 [inline]
ocfs2_delete_inode fs/ocfs2/inode.c:1079 [inline]
ocfs2_evict_inode+0x1d72/0x41d0 fs/ocfs2/inode.c:1216
evict+0x4c9/0x8d0 fs/inode.c:647
d_delete_notify include/linux/fsnotify.h:267 [inline]
vfs_rmdir+0x3b4/0x430 fs/namei.c:4170
do_rmdir+0x2a1/0x740 fs/namei.c:4218
__do_sys_unlinkat fs/namei.c:4398 [inline]
__se_sys_unlinkat fs/namei.c:4392 [inline]
__x64_sys_unlinkat+0xc0/0xe0 fs/namei.c:4392
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f8396d04f77
Code: 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 b8 07 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc8ea46ac8 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007f8396d04f77
RDX: 0000000000000200 RSI: 00007ffc8ea47c70 RDI: 00000000ffffff9c
RBP: 00007f8396d9b1ca R08: 0000000000018550 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000207 R12: 00007ffc8ea47c70
R13: 00007f8396d9b1ca R14: 0000000000010c77 R15: 00007ffc8ea49e30
</TASK>
ocfs2: Unmounting device (7,4) on (node local)