JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,4) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.4.64/4612 is trying to acquire lock:
ffff888074371808 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
ffff888074371808 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_remove_btree_range+0x674/0x15e0 fs/ocfs2/alloc.c:5742
but task is already holding lock:
ffff888074375be0 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_truncate_file+0x31e/0x1460 fs/ocfs2/file.c:467
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #4 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}:
down_write+0x38/0x60 kernel/locking/rwsem.c:1551
ocfs2_create_local_dquot+0x199/0x1850 fs/ocfs2/quota_local.c:1224
ocfs2_acquire_dquot+0x7ed/0xb10 fs/ocfs2/quota_global.c:871
dqget+0x778/0xeb0 fs/quota/dquot.c:988
dquot_set_dqblk+0x27/0xf90 fs/quota/dquot.c:2826
quota_setquota+0x4d6/0x590 fs/quota/quota.c:309
__do_sys_quotactl fs/quota/quota.c:959 [inline]
__se_sys_quotactl+0x28b/0x6f0 fs/quota/quota.c:915
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
-> #3 (&dquot->dq_lock){+.+.}-{3:3}:
__mutex_lock_common+0x1e3/0x2400 kernel/locking/mutex.c:596
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
dquot_commit+0x5a/0x410 fs/quota/dquot.c:507
ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6210
mark_dquot_dirty fs/quota/dquot.c:372 [inline]
mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:412
__dquot_free_space+0x7ca/0xb90 fs/quota/dquot.c:1942
dquot_free_space_nodirty include/linux/quotaops.h:376 [inline]
dquot_free_space include/linux/quotaops.h:381 [inline]
dquot_free_block include/linux/quotaops.h:392 [inline]
ext4_mb_clear_bb fs/ext4/mballoc.c:6165 [inline]
ext4_free_blocks+0x1b2b/0x24d0 fs/ext4/mballoc.c:6295
ext4_clear_blocks+0x37f/0x3f0 fs/ext4/indirect.c:895
ext4_free_data fs/ext4/indirect.c:969 [inline]
ext4_ind_truncate+0x754/0xbe0 fs/ext4/indirect.c:1161
ext4_truncate+0x9d8/0x10f0 fs/ext4/inode.c:4258
ext4_setattr+0xffe/0x19e0 fs/ext4/inode.c:5601
notify_change+0xbcd/0xee0 fs/attr.c:505
do_truncate+0x1ac/0x240 fs/open.c:65
handle_truncate fs/namei.c:3273 [inline]
do_open fs/namei.c:3620 [inline]
path_openat+0x2922/0x2fa0 fs/namei.c:3750
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_open fs/open.c:1279 [inline]
__se_sys_open fs/open.c:1275 [inline]
__x64_sys_open+0x11b/0x140 fs/open.c:1275
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
-> #2 (&ei->i_data_sem){++++}-{3:3}:
down_write+0x38/0x60 kernel/locking/rwsem.c:1551
ext4_truncate+0x97f/0x10f0 fs/ext4/inode.c:4251
ext4_setattr+0xffe/0x19e0 fs/ext4/inode.c:5601
notify_change+0xbcd/0xee0 fs/attr.c:505
do_truncate+0x1ac/0x240 fs/open.c:65
do_sys_ftruncate+0x31b/0x3d0 fs/open.c:193
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 (jbd2_handle){++++}-{0:0}:
jbd2_journal_lock_updates+0xa4/0x390 fs/jbd2/transaction.c:881
__ocfs2_flush_truncate_log+0x2ba/0x1110 fs/ocfs2/alloc.c:6027
ocfs2_flush_truncate_log+0x4b/0x60 fs/ocfs2/alloc.c:6074
ocfs2_sync_fs+0x119/0x330 fs/ocfs2/super.c:403
sync_filesystem+0x1be/0x220 fs/sync.c:66
generic_shutdown_super+0x6b/0x300 fs/super.c:448
kill_block_super+0x7c/0xe0 fs/super.c:1427
deactivate_locked_super+0x93/0xf0 fs/super.c:335
cleanup_mnt+0x42d/0x4e0 fs/namespace.c:1148
task_work_run+0x125/0x1a0 kernel/task_work.c:188
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
-> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{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_btree_range+0x674/0x15e0 fs/ocfs2/alloc.c:5742
ocfs2_commit_truncate+0xb68/0x1d50 fs/ocfs2/alloc.c:7346
ocfs2_truncate_file+0xd05/0x1460 fs/ocfs2/file.c:505
ocfs2_setattr+0x14dd/0x1ad0 fs/ocfs2/file.c:1215
notify_change+0xbcd/0xee0 fs/attr.c:505
do_truncate+0x1ac/0x240 fs/open.c:65
vfs_truncate+0x262/0x2f0 fs/open.c:111
do_sys_truncate+0xf2/0x1c0 fs/open.c:134
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]#3 --> &dquot->dq_lock --> &ocfs2_quota_ip_alloc_sem_key
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&ocfs2_quota_ip_alloc_sem_key);
lock(&dquot->dq_lock);
lock(&ocfs2_quota_ip_alloc_sem_key);
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3);
*** DEADLOCK ***
3 locks held by syz.4.64/4612:
#0: ffff88805f920460 (sb_writers#17){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:386
#1: ffff888074375f48 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
#1: ffff888074375f48 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: do_truncate+0x198/0x240 fs/open.c:63
#2: ffff888074375be0 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_truncate_file+0x31e/0x1460 fs/ocfs2/file.c:467
stack backtrace:
CPU: 0 PID: 4612 Comm: syz.4.64 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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_btree_range+0x674/0x15e0 fs/ocfs2/alloc.c:5742
ocfs2_commit_truncate+0xb68/0x1d50 fs/ocfs2/alloc.c:7346
ocfs2_truncate_file+0xd05/0x1460 fs/ocfs2/file.c:505
ocfs2_setattr+0x14dd/0x1ad0 fs/ocfs2/file.c:1215
notify_change+0xbcd/0xee0 fs/attr.c:505
do_truncate+0x1ac/0x240 fs/open.c:65
vfs_truncate+0x262/0x2f0 fs/open.c:111
do_sys_truncate+0xf2/0x1c0 fs/open.c:134
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: 0033:0x7f33e8986819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f33e6be0028 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007f33e8bfffa0 RCX: 00007f33e8986819
RDX: 0000000000000000 RSI: 0000000000103000 RDI: 0000200000000000
RBP: 00007f33e8a1cc91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f33e8c00038 R14: 00007f33e8bfffa0 R15: 00007fff5d7fa228
</TASK>