ocfs2: Mounting device (7,1) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
6.1.136-syzkaller #0 Not tainted
------------------------------------------------------
syz.1.25/4452 is trying to acquire lock:
ffff888067616d88 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
ffff888067616d88 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: ocfs2_move_extent fs/ocfs2/move_extents.c:640 [inline]
ffff888067616d88 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: __ocfs2_move_extents_range+0x1a61/0x3360 fs/ocfs2/move_extents.c:860
but task is already holding lock:
ffff888067611808 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
ffff888067611808 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_move_extent fs/ocfs2/move_extents.c:632 [inline]
ffff888067611808 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: __ocfs2_move_extents_range+0x136d/0x3360 fs/ocfs2/move_extents.c:860
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]#4){+.+.}-{3:3}:
down_write+0x36/0x60 kernel/locking/rwsem.c:1573
inode_lock include/linux/fs.h:758 [inline]
__ocfs2_flush_truncate_log+0x34f/0x11d0 fs/ocfs2/alloc.c:6047
ocfs2_flush_truncate_log+0x4b/0x60 fs/ocfs2/alloc.c:6077
ocfs2_sync_fs+0x113/0x310 fs/ocfs2/super.c:402
sync_filesystem+0x1be/0x220 fs/sync.c:66
generic_shutdown_super+0x6b/0x340 fs/super.c:474
kill_block_super+0x7c/0xe0 fs/super.c:1470
deactivate_locked_super+0x93/0xf0 fs/super.c:332
cleanup_mnt+0x463/0x4f0 fs/namespace.c:1186
task_work_run+0x1ca/0x250 kernel/task_work.c:203
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+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
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:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain kernel/locking/lockdep.c:3825 [inline]
__lock_acquire+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049
lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
down_write+0x36/0x60 kernel/locking/rwsem.c:1573
inode_lock include/linux/fs.h:758 [inline]
ocfs2_move_extent fs/ocfs2/move_extents.c:640 [inline]
__ocfs2_move_extents_range+0x1a61/0x3360 fs/ocfs2/move_extents.c:860
ocfs2_move_extents+0x37c/0x960 fs/ocfs2/move_extents.c:927
ocfs2_ioctl_move_extents+0x4da/0x6b0 fs/ocfs2/move_extents.c:1053
ocfs2_ioctl+0x2d7/0x740 fs/ocfs2/ioctl.c:930
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
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]#4);
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5);
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4);
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5);
*** DEADLOCK ***
5 locks held by syz.1.25/4452:
#0: ffff88807c49c460 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write_file+0x5c/0x200 fs/namespace.c:437
#1: ffff8880742009c8 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff8880742009c8 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: ocfs2_move_extents+0x1a0/0x960 fs/ocfs2/move_extents.c:905
#2: ffff888074200660 (&oi->ip_alloc_sem){+.+.}-{3:3}, at: ocfs2_move_extents+0x36f/0x960 fs/ocfs2/move_extents.c:925
#3: ffff888067613488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#3: ffff888067613488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x162/0x4630 fs/ocfs2/suballoc.c:782
#4: ffff888067611808 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#4: ffff888067611808 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_move_extent fs/ocfs2/move_extents.c:632 [inline]
#4: ffff888067611808 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: __ocfs2_move_extents_range+0x136d/0x3360 fs/ocfs2/move_extents.c:860
stack backtrace:
CPU: 1 PID: 4452 Comm: syz.1.25 Not tainted 6.1.136-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call Trace:
<TASK>
dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106
check_noncircular+0x274/0x310 kernel/locking/lockdep.c:2170
check_prev_add kernel/locking/lockdep.c:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain kernel/locking/lockdep.c:3825 [inline]
__lock_acquire+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049
lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
down_write+0x36/0x60 kernel/locking/rwsem.c:1573
inode_lock include/linux/fs.h:758 [inline]
ocfs2_move_extent fs/ocfs2/move_extents.c:640 [inline]
__ocfs2_move_extents_range+0x1a61/0x3360 fs/ocfs2/move_extents.c:860
ocfs2_move_extents+0x37c/0x960 fs/ocfs2/move_extents.c:927
ocfs2_ioctl_move_extents+0x4da/0x6b0 fs/ocfs2/move_extents.c:1053
ocfs2_ioctl+0x2d7/0x740 fs/ocfs2/ioctl.c:930
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f93f658e969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f93f7457038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f93f67b5fa0 RCX: 00007f93f658e969
RDX: 00002000000000c0 RSI: 0000000040406f06 RDI: 0000000000000004
RBP: 00007f93f6610ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f93f67b5fa0 R15: 00007ffe42fc6418
</TASK>