loop0: detected capacity change from 0 to 262144
JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
6.13.0-rc3-syzkaller-00026-g59dbb9d81adf #0 Not tainted
------------------------------------------------------
syz.0.0/5315 is trying to acquire lock:
ffff8880423ca958 (jbd2_handle){.+.+}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448

but task is already holding lock:
ffff8880468122e0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_xattr_ibody_set+0x12c/0xd00 fs/ocfs2/xattr.c:2783

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&oi->ip_alloc_sem){++++}-{4:4}:
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
       down_write+0x99/0x220 kernel/locking/rwsem.c:1577
       ocfs2_xattr_ibody_set+0x12c/0xd00 fs/ocfs2/xattr.c:2783
       __ocfs2_xattr_set_handle+0x128/0x10a0 fs/ocfs2/xattr.c:3322
       ocfs2_xattr_set+0x128c/0x1930 fs/ocfs2/xattr.c:3650
       __vfs_setxattr+0x468/0x4a0 fs/xattr.c:200
       __vfs_setxattr_noperm+0x12e/0x660 fs/xattr.c:234
       vfs_setxattr+0x221/0x430 fs/xattr.c:321
       do_setxattr fs/xattr.c:636 [inline]
       filename_setxattr+0x2af/0x430 fs/xattr.c:665
       path_setxattrat+0x440/0x510 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/common.c:52 [inline]
       do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (jbd2_handle){.+.+}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3161 [inline]
       check_prevs_add kernel/locking/lockdep.c:3280 [inline]
       validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
       __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
       start_this_handle+0x1eb4/0x2110 fs/jbd2/transaction.c:448
       jbd2__journal_restart+0x243/0x690 fs/jbd2/transaction.c:800
       ocfs2_extend_trans+0x2d7/0x750 fs/ocfs2/journal.c:435
       ocfs2_extend_rotate_transaction fs/ocfs2/alloc.c:2296 [inline]
       ocfs2_truncate_rec+0x91f/0x1c90 fs/ocfs2/alloc.c:5433
       ocfs2_remove_extent+0x1033/0x25f0 fs/ocfs2/alloc.c:5581
       __ocfs2_remove_xattr_range fs/ocfs2/xattr.c:779 [inline]
       ocfs2_xattr_shrink_size fs/ocfs2/xattr.c:832 [inline]
       ocfs2_xattr_value_truncate+0xec5/0x1960 fs/ocfs2/xattr.c:868
       ocfs2_xa_value_truncate fs/ocfs2/xattr.c:1915 [inline]
       ocfs2_xa_prepare_entry fs/ocfs2/xattr.c:2149 [inline]
       ocfs2_xa_set+0x1c7e/0x2c60 fs/ocfs2/xattr.c:2251
       ocfs2_xattr_ibody_set+0x534/0xd00 fs/ocfs2/xattr.c:2795
       __ocfs2_xattr_set_handle+0x128/0x10a0 fs/ocfs2/xattr.c:3322
       ocfs2_xattr_set+0x128c/0x1930 fs/ocfs2/xattr.c:3650
       __vfs_setxattr+0x468/0x4a0 fs/xattr.c:200
       __vfs_setxattr_noperm+0x12e/0x660 fs/xattr.c:234
       vfs_setxattr+0x221/0x430 fs/xattr.c:321
       do_setxattr fs/xattr.c:636 [inline]
       filename_setxattr+0x2af/0x430 fs/xattr.c:665
       path_setxattrat+0x440/0x510 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/common.c:52 [inline]
       do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&oi->ip_alloc_sem);
                               lock(jbd2_handle);
                               lock(&oi->ip_alloc_sem);
  rlock(jbd2_handle);

 *** DEADLOCK ***

6 locks held by syz.0.0/5315:
 #0: ffff888012cb2420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
 #1: ffff888046812640 (&sb->s_type->i_mutex_key#21){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff888046812640 (&sb->s_type->i_mutex_key#21){+.+.}-{4:4}, at: vfs_setxattr+0x1e1/0x430 fs/xattr.c:320
 #2: ffff888046812378 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x633/0x1930 fs/ocfs2/xattr.c:3583
 #3: ffff888012cb2610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_xattr_set+0x1192/0x1930 fs/ocfs2/xattr.c:3643
 #4: ffff8880409d80e8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3be/0x700 fs/ocfs2/journal.c:350
 #5: ffff8880468122e0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_xattr_ibody_set+0x12c/0xd00 fs/ocfs2/xattr.c:2783

stack backtrace:
CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted 6.13.0-rc3-syzkaller-00026-g59dbb9d81adf #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074
 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206
 check_prev_add kernel/locking/lockdep.c:3161 [inline]
 check_prevs_add kernel/locking/lockdep.c:3280 [inline]
 validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 start_this_handle+0x1eb4/0x2110 fs/jbd2/transaction.c:448
 jbd2__journal_restart+0x243/0x690 fs/jbd2/transaction.c:800
 ocfs2_extend_trans+0x2d7/0x750 fs/ocfs2/journal.c:435
 ocfs2_extend_rotate_transaction fs/ocfs2/alloc.c:2296 [inline]
 ocfs2_truncate_rec+0x91f/0x1c90 fs/ocfs2/alloc.c:5433
 ocfs2_remove_extent+0x1033/0x25f0 fs/ocfs2/alloc.c:5581
 __ocfs2_remove_xattr_range fs/ocfs2/xattr.c:779 [inline]
 ocfs2_xattr_shrink_size fs/ocfs2/xattr.c:832 [inline]
 ocfs2_xattr_value_truncate+0xec5/0x1960 fs/ocfs2/xattr.c:868
 ocfs2_xa_value_truncate fs/ocfs2/xattr.c:1915 [inline]
 ocfs2_xa_prepare_entry fs/ocfs2/xattr.c:2149 [inline]
 ocfs2_xa_set+0x1c7e/0x2c60 fs/ocfs2/xattr.c:2251
 ocfs2_xattr_ibody_set+0x534/0xd00 fs/ocfs2/xattr.c:2795
 __ocfs2_xattr_set_handle+0x128/0x10a0 fs/ocfs2/xattr.c:3322
 ocfs2_xattr_set+0x128c/0x1930 fs/ocfs2/xattr.c:3650
 __vfs_setxattr+0x468/0x4a0 fs/xattr.c:200
 __vfs_setxattr_noperm+0x12e/0x660 fs/xattr.c:234
 vfs_setxattr+0x221/0x430 fs/xattr.c:321
 do_setxattr fs/xattr.c:636 [inline]
 filename_setxattr+0x2af/0x430 fs/xattr.c:665
 path_setxattrat+0x440/0x510 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/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa953785d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa9545b0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fa953975fa0 RCX: 00007fa953785d29
RDX: 0000000020000380 RSI: 0000000020000300 RDI: 00000000200001c0
RBP: 00007fa953801a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000009 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa953975fa0 R15: 00007ffca50bbfb8
 </TASK>
syz.0.0 (5315) used greatest stack depth: 16984 bytes left