======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.2.2982/13376 is trying to acquire lock:
ffff88805bd989d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
ffff88805bd989d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: ocfs2_xattr_set+0xbe8/0x13a0 fs/ocfs2/xattr.c:3622

but task is already holding lock:
ffff88805bd9eab8 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x495/0x13a0 fs/ocfs2/xattr.c:3583

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&oi->ip_xattr_sem){++++}-{3:3}:
       down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520
       ocfs2_init_acl+0x30a/0x770 fs/ocfs2/acl.c:366
       ocfs2_mknod+0x1427/0x2310 fs/ocfs2/namei.c:410
       ocfs2_mkdir+0x196/0x430 fs/ocfs2/namei.c:657
       vfs_mkdir+0x2a5/0x470 fs/namei.c:4125
       do_mkdirat+0x1dc/0x450 fs/namei.c:4148
       __do_sys_mkdirat fs/namei.c:4163 [inline]
       __se_sys_mkdirat fs/namei.c:4161 [inline]
       __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4161
       do_syscall_x64 arch/x86/entry/common.c:46 [inline]
       do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

-> #3 (&journal->j_trans_barrier){.+.+}-{3:3}:
       down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520
       ocfs2_start_trans+0x3a8/0x6f0 fs/ocfs2/journal.c:372
       ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1258 [inline]
       ocfs2_reserve_local_alloc_bits+0xb39/0x2620 fs/ocfs2/localalloc.c:668
       ocfs2_reserve_clusters_with_limit+0x1ba/0xc20 fs/ocfs2/suballoc.c:1184
       ocfs2_symlink+0x1132/0x2730 fs/ocfs2/namei.c:1911
       vfs_symlink+0x138/0x2b0 fs/namei.c:4485
       do_symlinkat+0x1ba/0x400 fs/namei.c:4511
       __do_sys_symlinkat fs/namei.c:4527 [inline]
       __se_sys_symlinkat fs/namei.c:4524 [inline]
       __x64_sys_symlinkat+0x99/0xb0 fs/namei.c:4524
       do_syscall_x64 arch/x86/entry/common.c:46 [inline]
       do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

-> #2 (sb_internal#3){.+.+}-{0:0}:
       percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
       __sb_start_write include/linux/fs.h:1633 [inline]
       sb_start_intwrite include/linux/fs.h:1755 [inline]
       ocfs2_start_trans+0x2a9/0x6f0 fs/ocfs2/journal.c:370
       ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1258 [inline]
       ocfs2_reserve_local_alloc_bits+0xb39/0x2620 fs/ocfs2/localalloc.c:668
       ocfs2_reserve_clusters_with_limit+0x1ba/0xc20 fs/ocfs2/suballoc.c:1184
       ocfs2_symlink+0x1132/0x2730 fs/ocfs2/namei.c:1911
       vfs_symlink+0x138/0x2b0 fs/namei.c:4485
       do_symlinkat+0x1ba/0x400 fs/namei.c:4511
       __do_sys_symlinkat fs/namei.c:4527 [inline]
       __se_sys_symlinkat fs/namei.c:4524 [inline]
       __x64_sys_symlinkat+0x99/0xb0 fs/namei.c:4524
       do_syscall_x64 arch/x86/entry/common.c:46 [inline]
       do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

-> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}:
       down_write+0x97/0x200 kernel/locking/rwsem.c:1573
       inode_lock include/linux/fs.h:804 [inline]
       __ocfs2_flush_truncate_log+0x352/0x1130 fs/ocfs2/alloc.c:6046
       ocfs2_flush_truncate_log+0x4f/0x60 fs/ocfs2/alloc.c:6076
       ocfs2_sync_fs+0x11d/0x330 fs/ocfs2/super.c:402
       sync_filesystem+0x1c2/0x220 fs/sync.c:66
       ocfs2_remount+0x119/0xb40 fs/ocfs2/super.c:611
       reconfigure_super+0x229/0x8e0 fs/super.c:1151
       do_remount fs/namespace.c:2927 [inline]
       path_mount+0xcfe/0xfa0 fs/namespace.c:3705
       do_mount fs/namespace.c:3726 [inline]
       __do_sys_mount fs/namespace.c:3935 [inline]
       __se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912
       do_syscall_x64 arch/x86/entry/common.c:46 [inline]
       do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
       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:3134 [inline]
       check_prevs_add kernel/locking/lockdep.c:3253 [inline]
       validate_chain kernel/locking/lockdep.c:3869 [inline]
       __lock_acquire+0x37ef/0x7d80 kernel/locking/lockdep.c:5137
       lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754
       down_write+0x97/0x200 kernel/locking/rwsem.c:1573
       inode_lock include/linux/fs.h:804 [inline]
       ocfs2_xattr_set+0xbe8/0x13a0 fs/ocfs2/xattr.c:3622
       __vfs_setxattr+0x437/0x470 fs/xattr.c:201
       __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:235
       vfs_setxattr+0x16b/0x2f0 fs/xattr.c:322
       do_setxattr fs/xattr.c:630 [inline]
       path_setxattr+0x33a/0x590 fs/xattr.c:659
       __do_sys_setxattr fs/xattr.c:677 [inline]
       __se_sys_setxattr fs/xattr.c:673 [inline]
       __x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:673
       do_syscall_x64 arch/x86/entry/common.c:46 [inline]
       do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

other info that might help us debug this:

Chain exists of:
  &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5 --> &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[args->fi_sysfile_type]#5);

 *** DEADLOCK ***

3 locks held by syz.2.2982/13376:
 #0: ffff88802e6c4418 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412
 #1: ffff88805bd9ed98 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
 #1: ffff88805bd9ed98 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: vfs_setxattr+0x144/0x2f0 fs/xattr.c:321
 #2: ffff88805bd9eab8 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x495/0x13a0 fs/ocfs2/xattr.c:3583

stack backtrace:
CPU: 0 PID: 13376 Comm: syz.2.2982 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 check_noncircular+0x2fc/0x400 kernel/locking/lockdep.c:2187
 check_prev_add kernel/locking/lockdep.c:3134 [inline]
 check_prevs_add kernel/locking/lockdep.c:3253 [inline]
 validate_chain kernel/locking/lockdep.c:3869 [inline]
 __lock_acquire+0x37ef/0x7d80 kernel/locking/lockdep.c:5137
 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754
 down_write+0x97/0x200 kernel/locking/rwsem.c:1573
 inode_lock include/linux/fs.h:804 [inline]
 ocfs2_xattr_set+0xbe8/0x13a0 fs/ocfs2/xattr.c:3622
 __vfs_setxattr+0x437/0x470 fs/xattr.c:201
 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:235
 vfs_setxattr+0x16b/0x2f0 fs/xattr.c:322
 do_setxattr fs/xattr.c:630 [inline]
 path_setxattr+0x33a/0x590 fs/xattr.c:659
 __do_sys_setxattr fs/xattr.c:677 [inline]
 __se_sys_setxattr fs/xattr.c:673 [inline]
 __x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:673
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f34fb19de99
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:00007f34fc154028 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f34fb425fa0 RCX: 00007f34fb19de99
RDX: 0000200000000200 RSI: 00002000000001c0 RDI: 0000200000000000
RBP: 00007f34fb233eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000841 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f34fb426038 R14: 00007f34fb425fa0 R15: 00007fffbfc4bf48
 </TASK>