======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz-executor/5769 is trying to acquire lock:
ffff888060e0a658 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
ffff888060e0a658 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: __ocfs2_flush_truncate_log+0x351/0x10b0 fs/ocfs2/alloc.c:6047
but task is already holding lock:
ffff888060e109d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
ffff888060e109d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_flush_truncate_log+0x47/0x60 fs/ocfs2/alloc.c:6076
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}:
down_write+0x97/0x1f0 kernel/locking/rwsem.c:1573
inode_lock include/linux/fs.h:804 [inline]
ocfs2_move_extent fs/ocfs2/move_extents.c:640 [inline]
__ocfs2_move_extents_range+0x1a65/0x3380 fs/ocfs2/move_extents.c:860
ocfs2_move_extents+0x379/0x940 fs/ocfs2/move_extents.c:932
ocfs2_ioctl_move_extents+0x4e1/0x6c0 fs/ocfs2/move_extents.c:1058
ocfs2_ioctl+0x195/0x750 fs/ocfs2/ioctl.c:945
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
-> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3869 [inline]
__lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137
lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754
down_write+0x97/0x1f0 kernel/locking/rwsem.c:1573
inode_lock include/linux/fs.h:804 [inline]
__ocfs2_flush_truncate_log+0x351/0x10b0 fs/ocfs2/alloc.c:6047
ocfs2_flush_truncate_log+0x4f/0x60 fs/ocfs2/alloc.c:6077
ocfs2_sync_fs+0x117/0x310 fs/ocfs2/super.c:402
sync_filesystem+0x1c2/0x220 fs/sync.c:66
generic_shutdown_super+0x6f/0x2b0 fs/super.c:666
kill_block_super+0x44/0x90 fs/super.c:1660
deactivate_locked_super+0x97/0x100 fs/super.c:481
cleanup_mnt+0x429/0x4c0 fs/namespace.c:1259
task_work_run+0x1ce/0x250 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6);
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5);
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6);
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5);
*** DEADLOCK ***
2 locks held by syz-executor/5769:
#0: ffff88802f8580e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802f8580e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802f8580e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
#1: ffff888060e109d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff888060e109d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_flush_truncate_log+0x47/0x60 fs/ocfs2/alloc.c:6076
stack backtrace:
CPU: 1 PID: 5769 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106
check_noncircular+0x2bd/0x3c0 kernel/locking/lockdep.c:2187
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3869 [inline]
__lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137
lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754
down_write+0x97/0x1f0 kernel/locking/rwsem.c:1573
inode_lock include/linux/fs.h:804 [inline]
__ocfs2_flush_truncate_log+0x351/0x10b0 fs/ocfs2/alloc.c:6047
ocfs2_flush_truncate_log+0x4f/0x60 fs/ocfs2/alloc.c:6077
ocfs2_sync_fs+0x117/0x310 fs/ocfs2/super.c:402
sync_filesystem+0x1c2/0x220 fs/sync.c:66
generic_shutdown_super+0x6f/0x2b0 fs/super.c:666
kill_block_super+0x44/0x90 fs/super.c:1660
deactivate_locked_super+0x97/0x100 fs/super.c:481
cleanup_mnt+0x429/0x4c0 fs/namespace.c:1259
task_work_run+0x1ce/0x250 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb173790a77
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffce3153958 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fb173813d7d RCX: 00007fb173790a77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffce3153a10
RBP: 00007ffce3153a10 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffce3154aa0
R13: 00007fb173813d7d R14: 0000000000018ced R15: 00007ffce3154ae0
ocfs2: Unmounting device (7,3) on (node local)
gfs2: fsid=syz:syz.0: fatal: filesystem consistency error
inode = 11 2339
function = gfs2_dinode_in, file = fs/gfs2/glops.c, line = 472
gfs2: fsid=syz:syz.0: G: s:EX n:2/923 f:qobnN t:EX d:EX/0 a:0 v:0 r:3 m:20 p:1
gfs2: fsid=syz:syz.0: H: s:EX f:H e:0 p:5769 [syz-executor] gfs2_quota_sync+0x411/0x5a0 fs/gfs2/quota.c:1344
gfs2: fsid=syz:syz.0: I: n:11/2339 t:0 f:0x00 d:0x00000000 s:0 p:0
gfs2: fsid=syz:syz.0: about to withdraw this file system
gfs2: fsid=syz:syz.0: Journal recovery skipped for jid 0 until next mount.
gfs2: fsid=syz:syz.0: Glock dequeues delayed: 0
gfs2: fsid=syz:syz.0: File system withdrawn
CPU: 1 PID: 5769 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106
gfs2_withdraw+0xe50/0x13b0 fs/gfs2/util.c:345
gfs2_dinode_in fs/gfs2/glops.c:472 [inline]
gfs2_inode_refresh+0xb83/0xff0 fs/gfs2/glops.c:492
gfs2_instantiate+0x162/0x220 fs/gfs2/glock.c:483
gfs2_glock_holder_ready fs/gfs2/glock.c:1362 [inline]
gfs2_glock_wait+0x1d4/0x2a0 fs/gfs2/glock.c:1382
gfs2_glock_nq_init fs/gfs2/glock.h:252 [inline]
do_sync+0x47d/0xe00 fs/gfs2/quota.c:918
gfs2_quota_sync+0x411/0x5a0 fs/gfs2/quota.c:1344
gfs2_sync_fs+0x4c/0xb0 fs/gfs2/super.c:670
sync_filesystem+0xea/0x220 fs/sync.c:56
generic_shutdown_super+0x6f/0x2b0 fs/super.c:666
kill_block_super+0x44/0x90 fs/super.c:1660
deactivate_locked_super+0x97/0x100 fs/super.c:481
cleanup_mnt+0x429/0x4c0 fs/namespace.c:1259
task_work_run+0x1ce/0x250 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb173790a77
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffce3153958 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fb173813d7d RCX: 00007fb173790a77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffce3153a10
RBP: 00007ffce3153a10 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffce3154aa0
R13: 00007fb173813d7d R14: 000000000001995d R15: 00007ffce3154ae0