option from the mount to silence this warning.
=======================================================
JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
overlayfs: upper fs does not support tmpfile.
overlayfs: upper fs does not support RENAME_WHITEOUT.
======================================================
WARNING: possible circular locking dependency detected
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.17/5976 is trying to acquire lock:
ffff888055aabdc0 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline]
ffff888055aabdc0 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x11f/0x2610 fs/ocfs2/localalloc.c:636
but task is already holding lock:
ffff888055b29918 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x475/0x13e0 fs/ocfs2/xattr.c:3613
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&oi->ip_xattr_sem){+.+.}-{4:4}:
down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
ocfs2_xattr_set_handle+0x3e6/0x810 fs/ocfs2/xattr.c:3531
ocfs2_init_security_set+0xbd/0xe0 fs/ocfs2/xattr.c:7337
ocfs2_symlink+0x1bde/0x2640 fs/ocfs2/namei.c:2014
vfs_symlink+0x29a/0x2d0 fs/namei.c:5523
do_symlinkat+0x1f1/0x3c0 fs/namei.c:5550
__do_sys_symlink fs/namei.c:5576 [inline]
__se_sys_symlink fs/namei.c:5574 [inline]
__x64_sys_symlink+0x7a/0x90 fs/namei.c:5574
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
down_read+0x97/0x200 kernel/locking/rwsem.c:1537
ocfs2_start_trans+0x3ac/0x700 fs/ocfs2/journal.c:372
ocfs2_block_group_alloc fs/ocfs2/suballoc.c:686 [inline]
ocfs2_reserve_suballoc_bits+0x7bb/0x4790 fs/ocfs2/suballoc.c:835
ocfs2_reserve_new_metadata_blocks+0x415/0x9a0 fs/ocfs2/suballoc.c:985
ocfs2_calc_security_init+0x37a/0x5d0 fs/ocfs2/xattr.c:594
ocfs2_symlink+0xf84/0x2640 fs/ocfs2/namei.c:1912
vfs_symlink+0x29a/0x2d0 fs/namei.c:5523
do_symlinkat+0x1f1/0x3c0 fs/namei.c:5550
__do_sys_symlink fs/namei.c:5576 [inline]
__se_sys_symlink fs/namei.c:5574 [inline]
__x64_sys_symlink+0x7a/0x90 fs/namei.c:5574
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #1 (sb_internal#2){.+.+}-{0:0}:
percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline]
percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline]
__sb_start_write include/linux/fs/super.h:19 [inline]
sb_start_intwrite include/linux/fs/super.h:177 [inline]
ocfs2_start_trans+0x2ac/0x700 fs/ocfs2/journal.c:370
ocfs2_symlink+0x10af/0x2640 fs/ocfs2/namei.c:1931
vfs_symlink+0x29a/0x2d0 fs/namei.c:5523
do_symlinkat+0x1f1/0x3c0 fs/namei.c:5550
__do_sys_symlink fs/namei.c:5576 [inline]
__se_sys_symlink fs/namei.c:5574 [inline]
__x64_sys_symlink+0x7a/0x90 fs/namei.c:5574
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #0 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237
lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868
down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
inode_lock include/linux/fs.h:1027 [inline]
ocfs2_reserve_local_alloc_bits+0x11f/0x2610 fs/ocfs2/localalloc.c:636
ocfs2_reserve_clusters_with_limit+0x1b9/0xc20 fs/ocfs2/suballoc.c:1169
ocfs2_init_xattr_set_ctxt+0x375/0x710 fs/ocfs2/xattr.c:3316
ocfs2_xattr_set+0xc42/0x13e0 fs/ocfs2/xattr.c:3664
__vfs_setxattr+0x43c/0x480 fs/xattr.c:200
__vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:234
vfs_setxattr+0x16a/0x2f0 fs/xattr.c:321
ovl_do_setxattr fs/overlayfs/overlayfs.h:317 [inline]
ovl_setxattr fs/overlayfs/overlayfs.h:329 [inline]
ovl_make_workdir fs/overlayfs/super.c:728 [inline]
ovl_get_workdir fs/overlayfs/super.c:840 [inline]
ovl_fill_super_creds fs/overlayfs/super.c:1453 [inline]
ovl_fill_super+0x4b50/0x5e60 fs/overlayfs/super.c:1567
vfs_get_super fs/super.c:1324 [inline]
get_tree_nodev+0xbb/0x150 fs/super.c:1343
vfs_get_tree+0x92/0x2a0 fs/super.c:1751
fc_mount fs/namespace.c:1199 [inline]
do_new_mount_fc fs/namespace.c:3636 [inline]
do_new_mount+0x329/0xa50 fs/namespace.c:3712
do_mount fs/namespace.c:4035 [inline]
__do_sys_mount fs/namespace.c:4224 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4201
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
other info that might help us debug this:
Chain exists of:
&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE] --> &journal->j_trans_barrier --> &oi->ip_xattr_sem
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&oi->ip_xattr_sem);
lock(&journal->j_trans_barrier);
lock(&oi->ip_xattr_sem);
lock(&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]);
*** DEADLOCK ***
4 locks held by syz.0.17/5976:
#0: ffff888031fbe0d0 (&type->s_umount_key#55/1){+.+.}-{4:4}, at: alloc_super+0x28c/0xab0 fs/super.c:344
#1: ffff888031408480 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:499
#2: ffff888055b29c40 (&sb->s_type->i_mutex_key#25){++++}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline]
#2: ffff888055b29c40 (&sb->s_type->i_mutex_key#25){++++}-{4:4}, at: vfs_setxattr+0x143/0x2f0 fs/xattr.c:320
#3: ffff888055b29918 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x475/0x13e0 fs/ocfs2/xattr.c:3613
stack backtrace:
CPU: 0 UID: 0 PID: 5976 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2043
check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237
lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868
down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
inode_lock include/linux/fs.h:1027 [inline]
ocfs2_reserve_local_alloc_bits+0x11f/0x2610 fs/ocfs2/localalloc.c:636
ocfs2_reserve_clusters_with_limit+0x1b9/0xc20 fs/ocfs2/suballoc.c:1169
ocfs2_init_xattr_set_ctxt+0x375/0x710 fs/ocfs2/xattr.c:3316
ocfs2_xattr_set+0xc42/0x13e0 fs/ocfs2/xattr.c:3664
__vfs_setxattr+0x43c/0x480 fs/xattr.c:200
__vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:234
vfs_setxattr+0x16a/0x2f0 fs/xattr.c:321
ovl_do_setxattr fs/overlayfs/overlayfs.h:317 [inline]
ovl_setxattr fs/overlayfs/overlayfs.h:329 [inline]
ovl_make_workdir fs/overlayfs/super.c:728 [inline]
ovl_get_workdir fs/overlayfs/super.c:840 [inline]
ovl_fill_super_creds fs/overlayfs/super.c:1453 [inline]
ovl_fill_super+0x4b50/0x5e60 fs/overlayfs/super.c:1567
vfs_get_super fs/super.c:1324 [inline]
get_tree_nodev+0xbb/0x150 fs/super.c:1343
vfs_get_tree+0x92/0x2a0 fs/super.c:1751
fc_mount fs/namespace.c:1199 [inline]
do_new_mount_fc fs/namespace.c:3636 [inline]
do_new_mount+0x329/0xa50 fs/namespace.c:3712
do_mount fs/namespace.c:4035 [inline]
__do_sys_mount fs/namespace.c:4224 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4201
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0a4cd3acb9
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:00007ffcc9245418 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0a4cfb5fa0 RCX: 00007f0a4cd3acb9
RDX: 0000200000000080 RSI: 0000200000000040 RDI: 0000000000000000
RBP: 00007f0a4cda8bf7 R08: 0000200000000140 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0a4cfb5fac R14: 00007f0a4cfb5fa0 R15: 00007f0a4cfb5fa0
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/ocfs2/xattr.c:1985:3
index 2 is out of range for type 'struct ocfs2_xattr_entry[] __counted_by(xh_count)' (aka 'struct ocfs2_xattr_entry[]')
CPU: 0 UID: 0 PID: 5976 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
ubsan_epilogue+0xa/0x30 lib/ubsan.c:233
__ubsan_handle_out_of_bounds+0xe8/0xf0 lib/ubsan.c:455
ocfs2_xa_remove_entry+0x49e/0x670 fs/ocfs2/xattr.c:1985
ocfs2_xa_remove fs/ocfs2/xattr.c:2073 [inline]
ocfs2_xa_set+0xb27/0x2b50 fs/ocfs2/xattr.c:2277
ocfs2_xattr_block_set+0x3e0/0x3350 fs/ocfs2/xattr.c:3015
__ocfs2_xattr_set_handle+0x262/0xf50 fs/ocfs2/xattr.c:-1
ocfs2_xattr_set+0xf3f/0x13e0 fs/ocfs2/xattr.c:3680
__vfs_removexattr+0x431/0x470 fs/xattr.c:518
__vfs_removexattr_locked+0x1ee/0x230 fs/xattr.c:553
vfs_removexattr+0x80/0x1b0 fs/xattr.c:575
ovl_do_removexattr fs/overlayfs/overlayfs.h:335 [inline]
ovl_removexattr fs/overlayfs/overlayfs.h:343 [inline]
ovl_make_workdir fs/overlayfs/super.c:760 [inline]
ovl_get_workdir fs/overlayfs/super.c:840 [inline]
ovl_fill_super_creds fs/overlayfs/super.c:1453 [inline]
ovl_fill_super+0x4c39/0x5e60 fs/overlayfs/super.c:1567
vfs_get_super fs/super.c:1324 [inline]
get_tree_nodev+0xbb/0x150 fs/super.c:1343
vfs_get_tree+0x92/0x2a0 fs/super.c:1751
fc_mount fs/namespace.c:1199 [inline]
do_new_mount_fc fs/namespace.c:3636 [inline]
do_new_mount+0x329/0xa50 fs/namespace.c:3712
do_mount fs/namespace.c:4035 [inline]
__do_sys_mount fs/namespace.c:4224 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4201
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0a4cd3acb9
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:00007ffcc9245418 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0a4cfb5fa0 RCX: 00007f0a4cd3acb9
RDX: 0000200000000080 RSI: 0000200000000040 RDI: 0000000000000000
RBP: 00007f0a4cda8bf7 R08: 0000200000000140 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0a4cfb5fac R14: 00007f0a4cfb5fa0 R15: 00007f0a4cfb5fa0
---[ end trace ]---