======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.3.21/4443 is trying to acquire lock:
ffff888054d9eab8 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_calc_xattr_init+0x204/0xd90 fs/ocfs2/xattr.c:631
but task is already holding lock:
ffff8880743709c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
ffff8880743709c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x16d/0x4810 fs/ocfs2/suballoc.c:782
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}:
down_write+0x36/0x60 kernel/locking/rwsem.c:1573
inode_lock include/linux/fs.h:758 [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+0x163f/0x4630 fs/ocfs2/inode.c:1219
evict+0x4c9/0x8d0 fs/inode.c:705
d_delete_notify include/linux/fsnotify.h:267 [inline]
vfs_rmdir+0x397/0x4d0 fs/namei.c:4212
do_rmdir+0x29a/0x5c0 fs/namei.c:4260
__do_sys_unlinkat fs/namei.c:4440 [inline]
__se_sys_unlinkat fs/namei.c:4434 [inline]
__x64_sys_unlinkat+0xc0/0xe0 fs/namei.c:4434
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
-> #2 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}:
down_write+0x36/0x60 kernel/locking/rwsem.c:1573
inode_lock include/linux/fs.h:758 [inline]
ocfs2_del_inode_from_orphan+0x12b/0x7a0 fs/ocfs2/namei.c:2713
ocfs2_dio_end_io_write fs/ocfs2/aops.c:2333 [inline]
ocfs2_dio_end_io+0x540/0x1200 fs/ocfs2/aops.c:2431
dio_complete+0x251/0x710 fs/direct-io.c:271
__blockdev_direct_IO+0x2f25/0x3570 fs/direct-io.c:1320
ocfs2_direct_IO+0x233/0x2a0 fs/ocfs2/aops.c:2468
generic_file_direct_write+0x10f/0x330 mm/filemap.c:3787
__generic_file_write_iter+0x15f/0x2a0 mm/filemap.c:3945
ocfs2_file_write_iter+0x1660/0x1f00 fs/ocfs2/file.c:2469
do_iter_readv_writev fs/read_write.c:-1 [inline]
do_iter_write+0x642/0xb10 fs/read_write.c:861
iter_file_splice_write+0x699/0xcc0 fs/splice.c:685
do_splice_from fs/splice.c:763 [inline]
direct_splice_actor+0xe1/0x130 fs/splice.c:950
splice_direct_to_actor+0x48b/0xb90 fs/splice.c:896
do_splice_direct+0x1ce/0x2f0 fs/splice.c:1002
do_sendfile+0x5f3/0xea0 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64+0x141/0x1a0 fs/read_write.c:1309
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
-> #1 (&oi->ip_alloc_sem){++++}-{3:3}:
down_write+0x36/0x60 kernel/locking/rwsem.c:1573
ocfs2_try_remove_refcount_tree+0xb3/0x340 fs/ocfs2/refcounttree.c:932
ocfs2_truncate_file+0xe35/0x1580 fs/ocfs2/file.c:517
ocfs2_setattr+0x16b8/0x1d30 fs/ocfs2/file.c:1212
notify_change+0xc74/0xf40 fs/attr.c:499
do_truncate+0x1ac/0x240 fs/open.c:65
do_coredump+0x2043/0x22f0 fs/coredump.c:801
get_signal+0x10aa/0x1350 kernel/signal.c:2857
arch_do_signal_or_restart+0xc4/0x1350 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:316
asm_exc_stack_segment+0x22/0x30 arch/x86/include/asm/idtentry.h:601
-> #0 (&oi->ip_xattr_sem){++++}-{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+0x2d07/0x7d10 kernel/locking/lockdep.c:5049
lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5662
down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520
ocfs2_calc_xattr_init+0x204/0xd90 fs/ocfs2/xattr.c:631
ocfs2_mknod+0xd59/0x25b0 fs/ocfs2/namei.c:330
ocfs2_create+0x1b6/0x4b0 fs/ocfs2/namei.c:674
lookup_open fs/namei.c:3490 [inline]
open_last_lookups fs/namei.c:3558 [inline]
path_openat+0x1181/0x2ee0 fs/namei.c:3788
do_filp_open+0x1f1/0x430 fs/namei.c:3818
do_sys_openat2+0x150/0x4b0 fs/open.c:1320
do_sys_open fs/open.c:1336 [inline]
__do_sys_open fs/open.c:1344 [inline]
__se_sys_open fs/open.c:1340 [inline]
__x64_sys_open+0x11b/0x140 fs/open.c:1340
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
other info that might help us debug this:
Chain exists of:
&oi->ip_xattr_sem --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type] --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2);
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]);
lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2);
lock(&oi->ip_xattr_sem);
*** DEADLOCK ***
3 locks held by syz.3.21/4443:
#0: ffff88807d2ba460 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:402
#1: ffff888054d9ed88 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff888054d9ed88 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline]
#1: ffff888054d9ed88 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x7d2/0x2ee0 fs/namei.c:3788
#2: ffff8880743709c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#2: ffff8880743709c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x16d/0x4810 fs/ocfs2/suballoc.c:782
stack backtrace:
CPU: 0 PID: 4443 Comm: syz.3.21 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
<TASK>
dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
check_noncircular+0x296/0x330 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+0x2d07/0x7d10 kernel/locking/lockdep.c:5049
lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5662
down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520
ocfs2_calc_xattr_init+0x204/0xd90 fs/ocfs2/xattr.c:631
ocfs2_mknod+0xd59/0x25b0 fs/ocfs2/namei.c:330
ocfs2_create+0x1b6/0x4b0 fs/ocfs2/namei.c:674
lookup_open fs/namei.c:3490 [inline]
open_last_lookups fs/namei.c:3558 [inline]
path_openat+0x1181/0x2ee0 fs/namei.c:3788
do_filp_open+0x1f1/0x430 fs/namei.c:3818
do_sys_openat2+0x150/0x4b0 fs/open.c:1320
do_sys_open fs/open.c:1336 [inline]
__do_sys_open fs/open.c:1344 [inline]
__se_sys_open fs/open.c:1340 [inline]
__x64_sys_open+0x11b/0x140 fs/open.c:1340
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fcbcc19cdd9
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:00007fcbcd0b2028 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fcbcc415fa0 RCX: 00007fcbcc19cdd9
RDX: 000000000000002a RSI: 0000000400141042 RDI: 0000200000000040
RBP: 00007fcbcc232d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcbcc416038 R14: 00007fcbcc415fa0 R15: 00007ffcdee8d498
</TASK>
bridge0: port 3(syz_tun) entered disabled state
infiniband syz1: set down
device syz_tun left promiscuous mode
bridge0: port 3(syz_tun) entered disabled state
ocfs2: Unmounting device (7,3) on (node local)