ocfs2: Mounting device (7,7) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Tainted: G             L     
------------------------------------------------------
syz.7.2388/17394 is trying to acquire lock:
ffff88807d722610 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_write_begin_inline fs/ocfs2/aops.c:1459 [inline]
ffff88807d722610 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1563 [inline]
ffff88807d722610 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x2057/0x4140 fs/ocfs2/aops.c:1649

but task is already holding lock:
ffff888055a73120 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_write_begin+0x1a2/0x320 fs/ocfs2/aops.c:1882

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}:
       down_write+0x96/0x200 kernel/locking/rwsem.c:1590
       ocfs2_try_remove_refcount_tree+0xb6/0x340 fs/ocfs2/refcounttree.c:933
       ocfs2_xattr_set+0x61a/0x13e0 fs/ocfs2/xattr.c:3699
       ocfs2_set_acl+0x701/0x7b0 fs/ocfs2/acl.c:255
       ocfs2_iop_set_acl+0x1b1/0x2b0 fs/ocfs2/acl.c:287
       set_posix_acl fs/posix_acl.c:954 [inline]
       vfs_set_acl+0x87d/0xb00 fs/posix_acl.c:1133
       do_setxattr fs/xattr.c:633 [inline]
       filename_setxattr+0x2fc/0x630 fs/xattr.c:665
       path_setxattrat+0x3f3/0x430 fs/xattr.c:713
       __do_sys_setxattr fs/xattr.c:747 [inline]
       __se_sys_setxattr fs/xattr.c:743 [inline]
       __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:743
       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 (&oi->ip_xattr_sem){++++}-{4:4}:
       down_read+0x47/0x2e0 kernel/locking/rwsem.c:1537
       ocfs2_init_acl+0x2fd/0x7e0 fs/ocfs2/acl.c:367
       ocfs2_mknod+0x1423/0x2210 fs/ocfs2/namei.c:414
       ocfs2_mkdir+0x181/0x430 fs/ocfs2/namei.c:660
       vfs_mkdir+0x753/0x870 fs/namei.c:5139
       do_mkdirat+0x27d/0x4b0 fs/namei.c:5173
       __do_sys_mkdirat fs/namei.c:5195 [inline]
       __se_sys_mkdirat fs/namei.c:5193 [inline]
       __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:5193
       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 (&journal->j_trans_barrier){.+.+}-{4:4}:
       down_read+0x47/0x2e0 kernel/locking/rwsem.c:1537
       ocfs2_start_trans+0x3ab/0x700 fs/ocfs2/journal.c:372
       ocfs2_modify_bh+0xe3/0x4d0 fs/ocfs2/quota_local.c:101
       ocfs2_local_read_info+0x1454/0x1810 fs/ocfs2/quota_local.c:767
       dquot_load_quota_sb+0x791/0xbd0 fs/quota/dquot.c:2462
       dquot_load_quota_inode+0x2e1/0x5d0 fs/quota/dquot.c:2499
       ocfs2_enable_quotas+0x1c8/0x4a0 fs/ocfs2/super.c:930
       ocfs2_fill_super+0x5337/0x6910 fs/ocfs2/super.c:1140
       get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1691
       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

-> #0 (sb_internal#5){.+.+}-{0:0}:
       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
       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_write_begin_inline fs/ocfs2/aops.c:1459 [inline]
       ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1563 [inline]
       ocfs2_write_begin_nolock+0x2057/0x4140 fs/ocfs2/aops.c:1649
       ocfs2_write_begin+0x1c5/0x320 fs/ocfs2/aops.c:1884
       generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4314
       ocfs2_file_write_iter+0x1663/0x1e20 fs/ocfs2/file.c:2475
       new_sync_write fs/read_write.c:593 [inline]
       vfs_write+0x61d/0xb90 fs/read_write.c:686
       ksys_write+0x150/0x270 fs/read_write.c:738
       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:
  sb_internal#5 --> &oi->ip_xattr_sem --> &ocfs2_file_ip_alloc_sem_key

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ocfs2_file_ip_alloc_sem_key);
                               lock(&oi->ip_xattr_sem);
                               lock(&ocfs2_file_ip_alloc_sem_key);
  rlock(sb_internal#5);

 *** DEADLOCK ***

4 locks held by syz.7.2388/17394:
 #0: ffff8880119207f8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x246/0x320 fs/file.c:1255
 #1: ffff88807d722420 (sb_writers#31){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2683 [inline]
 #1: ffff88807d722420 (sb_writers#31){.+.+}-{0:0}, at: vfs_write+0x227/0xb90 fs/read_write.c:682
 #2: ffff888055a73480 (&sb->s_type->i_mutex_key#56){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline]
 #2: ffff888055a73480 (&sb->s_type->i_mutex_key#56){+.+.}-{4:4}, at: ocfs2_file_write_iter+0x429/0x1e20 fs/ocfs2/file.c:2405
 #3: ffff888055a73120 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_write_begin+0x1a2/0x320 fs/ocfs2/aops.c:1882

stack backtrace:
CPU: 0 UID: 0 PID: 17394 Comm: syz.7.2388 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
 <TASK>
 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
 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_write_begin_inline fs/ocfs2/aops.c:1459 [inline]
 ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1563 [inline]
 ocfs2_write_begin_nolock+0x2057/0x4140 fs/ocfs2/aops.c:1649
 ocfs2_write_begin+0x1c5/0x320 fs/ocfs2/aops.c:1884
 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4314
 ocfs2_file_write_iter+0x1663/0x1e20 fs/ocfs2/file.c:2475
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x61d/0xb90 fs/read_write.c:686
 ksys_write+0x150/0x270 fs/read_write.c:738
 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: 0033:0x7fdcd1f9aeb9
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:00007fdcd2e2c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdcd2215fa0 RCX: 00007fdcd1f9aeb9
RDX: 0000000000000060 RSI: 0000200000000100 RDI: 0000000000000004
RBP: 00007fdcd2008c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdcd2216038 R14: 00007fdcd2215fa0 R15: 00007ffd84ffb2a8
 </TASK>