======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz-executor332/5608 is trying to acquire lock:
ffff888045831890 (&oi->ip_alloc_sem){+.+.}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xb6/0x360 fs/ocfs2/refcounttree.c:959

but task is already holding lock:
ffff888045831918 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xa4/0x360 fs/ocfs2/refcounttree.c:958

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&oi->ip_xattr_sem){++++}-{4:4}:
       down_read+0x97/0x200 kernel/locking/rwsem.c:1574
       ocfs2_xattr_get+0xf4/0x260 fs/ocfs2/xattr.c:1575
       __vfs_getxattr+0x412/0x440 fs/xattr.c:446
       smk_fetch+0xb4/0x140 security/smack/smack_lsm.c:298
       smack_d_instantiate+0x757/0x990 security/smack/smack_lsm.c:3679
       security_d_instantiate+0x106/0x1d0 security/security.c:3703
       d_instantiate+0x54/0xb0 fs/dcache.c:2182
       ocfs2_mknod+0x199c/0x21a0 fs/ocfs2/namei.c:454
       ocfs2_create+0x195/0x460 fs/ocfs2/namei.c:678
       lookup_open+0xc17/0x1a60 fs/namei.c:4567
       open_last_lookups fs/namei.c:4766 [inline]
       path_openat+0x715/0x20a0 fs/namei.c:4996
       do_file_open+0x23e/0x4a0 fs/namei.c:5028
       do_sys_openat2+0x115/0x200 fs/open.c:1417
       do_sys_open fs/open.c:1423 [inline]
       __do_sys_openat fs/open.c:1439 [inline]
       __se_sys_openat fs/open.c:1434 [inline]
       __x64_sys_openat+0x138/0x170 fs/open.c:1434
       do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
       do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
       down_read+0x97/0x200 kernel/locking/rwsem.c:1574
       ocfs2_start_trans+0x3af/0x700 fs/ocfs2/journal.c:369
       ocfs2_mknod+0xeed/0x21a0 fs/ocfs2/namei.c:365
       ocfs2_create+0x195/0x460 fs/ocfs2/namei.c:678
       lookup_open+0xc17/0x1a60 fs/namei.c:4567
       open_last_lookups fs/namei.c:4766 [inline]
       path_openat+0x715/0x20a0 fs/namei.c:4996
       do_file_open+0x23e/0x4a0 fs/namei.c:5028
       do_sys_openat2+0x115/0x200 fs/open.c:1417
       do_sys_open fs/open.c:1423 [inline]
       __do_sys_openat fs/open.c:1439 [inline]
       __se_sys_openat fs/open.c:1434 [inline]
       __x64_sys_openat+0x138/0x170 fs/open.c:1434
       do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
       do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
       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:367
       ocfs2_orphan_for_truncate fs/ocfs2/file.c:397 [inline]
       ocfs2_truncate_file+0x634/0x14b0 fs/ocfs2/file.c:506
       ocfs2_setattr+0x1641/0x1d10 fs/ocfs2/file.c:1224
       notify_change+0xbb8/0xec0 fs/attr.c:556
       do_truncate+0x1c2/0x250 fs/open.c:68
       handle_truncate fs/namei.c:4300 [inline]
       do_open fs/namei.c:4840 [inline]
       path_openat+0x1863/0x20a0 fs/namei.c:4999
       do_file_open+0x23e/0x4a0 fs/namei.c:5028
       do_sys_openat2+0x115/0x200 fs/open.c:1417
       do_sys_open fs/open.c:1423 [inline]
       __do_sys_creat fs/open.c:1501 [inline]
       __se_sys_creat fs/open.c:1495 [inline]
       __x64_sys_creat+0x8f/0xc0 fs/open.c:1495
       do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
       do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&oi->ip_alloc_sem){+.+.}-{4:4}:
       check_prev_add kernel/locking/lockdep.c:3209 [inline]
       check_prevs_add kernel/locking/lockdep.c:3328 [inline]
       validate_chain kernel/locking/lockdep.c:3952 [inline]
       __lock_acquire+0x164c/0x2de0 kernel/locking/lockdep.c:5288
       lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942
       down_write+0x3a/0x50 kernel/locking/rwsem.c:1631
       ocfs2_try_remove_refcount_tree+0xb6/0x360 fs/ocfs2/refcounttree.c:959
       ocfs2_truncate_file+0xe91/0x14b0 fs/ocfs2/file.c:527
       ocfs2_setattr+0x1641/0x1d10 fs/ocfs2/file.c:1224
       notify_change+0xbb8/0xec0 fs/attr.c:556
       do_truncate+0x1c2/0x250 fs/open.c:68
       handle_truncate fs/namei.c:4300 [inline]
       do_open fs/namei.c:4840 [inline]
       path_openat+0x1863/0x20a0 fs/namei.c:4999
       do_file_open+0x23e/0x4a0 fs/namei.c:5028
       do_sys_openat2+0x115/0x200 fs/open.c:1417
       do_sys_open fs/open.c:1423 [inline]
       __do_sys_creat fs/open.c:1501 [inline]
       __se_sys_creat fs/open.c:1495 [inline]
       __x64_sys_creat+0x8f/0xc0 fs/open.c:1495
       do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
       do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  &oi->ip_alloc_sem --> &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(&oi->ip_alloc_sem);

 *** DEADLOCK ***

locks held by syz-executor332/5608: 3, last CPU#0:
 #0: ffff88803ab52510 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:531
 #1: ffff888045831c40 (&sb->s_type->i_mutex_key#17){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:1029 [inline]
 #1: ffff888045831c40 (&sb->s_type->i_mutex_key#17){+.+.}-{4:4}, at: do_truncate+0x18f/0x250 fs/open.c:63
 #2: ffff888045831918 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_try_remove_refcount_tree+0xa4/0x360 fs/ocfs2/refcounttree.c:958

stack backtrace:
CPU: 0 UID: 0 PID: 5608 Comm: syz-executor332 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_circular_bug+0x2e2/0x300 kernel/locking/lockdep.c:2087
 check_noncircular+0x12f/0x150 kernel/locking/lockdep.c:2219
 check_prev_add kernel/locking/lockdep.c:3209 [inline]
 check_prevs_add kernel/locking/lockdep.c:3328 [inline]
 validate_chain kernel/locking/lockdep.c:3952 [inline]
 __lock_acquire+0x164c/0x2de0 kernel/locking/lockdep.c:5288
 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942
 down_write+0x3a/0x50 kernel/locking/rwsem.c:1631
 ocfs2_try_remove_refcount_tree+0xb6/0x360 fs/ocfs2/refcounttree.c:959
 ocfs2_truncate_file+0xe91/0x14b0 fs/ocfs2/file.c:527
 ocfs2_setattr+0x1641/0x1d10 fs/ocfs2/file.c:1224
 notify_change+0xbb8/0xec0 fs/attr.c:556
 do_truncate+0x1c2/0x250 fs/open.c:68
 handle_truncate fs/namei.c:4300 [inline]
 do_open fs/namei.c:4840 [inline]
 path_openat+0x1863/0x20a0 fs/namei.c:4999
 do_file_open+0x23e/0x4a0 fs/namei.c:5028
 do_sys_openat2+0x115/0x200 fs/open.c:1417
 do_sys_open fs/open.c:1423 [inline]
 __do_sys_creat fs/open.c:1501 [inline]
 __se_sys_creat fs/open.c:1495 [inline]
 __x64_sys_creat+0x8f/0xc0 fs/open.c:1495
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fddf3929ea9
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 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 d8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff4b7cb438 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007fddf3929ea9
RDX: ffffffffffffffd8 RSI: 0000000000000001 RDI: 000020000000eec0
RBP: 00002000000000c0 R08: 000055555d573560 R09: 000055555d573560
R10: 000055555d573560 R11: 0000000000000246 R12: 00007fff4b7cb460
R13: 0000000000000002 R14: 431bde82d7b634db R15: 00007fddf398a04b
 </TASK>