loop3: detected capacity change from 0 to 32768
JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,3) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.3.1199/7699 is trying to acquire lock:
ffff88807caac650 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_setattr+0xd39/0x1d30 fs/ocfs2/file.c:1263

but task is already holding lock:
ffff888055a494a0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_setattr+0xd2a/0x1d30 fs/ocfs2/file.c:1262

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}:
       down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520
       ocfs2_read_virt_blocks+0x25d/0x970 fs/ocfs2/extent_map.c:984
       ocfs2_read_dir_block+0xd1/0x4f0 fs/ocfs2/dir.c:508
       ocfs2_dir_foreach_blk_el fs/ocfs2/dir.c:1842 [inline]
       ocfs2_dir_foreach_blk+0x268/0x1a90 fs/ocfs2/dir.c:1928
       ocfs2_dir_foreach+0x16d/0x1c0 fs/ocfs2/dir.c:1938
       ocfs2_empty_dir+0x105/0x650 fs/ocfs2/dir.c:2156
       ocfs2_rename+0x218a/0x3950 fs/ocfs2/namei.c:1499
       vfs_rename+0xbe1/0x1100 fs/namei.c:4882
       do_renameat2+0x8e5/0xce0 fs/namei.c:5035
       __do_sys_rename fs/namei.c:5081 [inline]
       __se_sys_rename fs/namei.c:5079 [inline]
       __x64_sys_rename+0x82/0x90 fs/namei.c:5079
       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 (&journal->j_trans_barrier){.+.+}-{3:3}:
       down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520
       ocfs2_start_trans+0x3a4/0x6f0 fs/ocfs2/journal.c:374
       ocfs2_mknod+0xf77/0x25b0 fs/ocfs2/namei.c:361
       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_openat fs/open.c:1352 [inline]
       __se_sys_openat fs/open.c:1347 [inline]
       __x64_sys_openat+0x135/0x160 fs/open.c:1347
       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

-> #0 (sb_internal#2){.+.+}-{0:0}:
       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
       percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
       __sb_start_write include/linux/fs.h:1891 [inline]
       sb_start_intwrite include/linux/fs.h:2013 [inline]
       ocfs2_start_trans+0x2a5/0x6f0 fs/ocfs2/journal.c:372
       ocfs2_setattr+0xd39/0x1d30 fs/ocfs2/file.c:1263
       notify_change+0xc74/0xf40 fs/attr.c:499
       ovl_do_notify_change fs/overlayfs/overlayfs.h:142 [inline]
       ovl_workdir_create+0x58d/0x760 fs/overlayfs/super.c:833
       ovl_make_workdir fs/overlayfs/super.c:1389 [inline]
       ovl_get_workdir+0x3c6/0x1610 fs/overlayfs/super.c:1539
       ovl_fill_super+0x1824/0x2a30 fs/overlayfs/super.c:2095
       mount_nodev+0x52/0xe0 fs/super.c:1489
       legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
       vfs_get_tree+0x88/0x270 fs/super.c:1573
       do_new_mount+0x24a/0xa40 fs/namespace.c:3078
       do_mount fs/namespace.c:3421 [inline]
       __do_sys_mount fs/namespace.c:3629 [inline]
       __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
       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:
  sb_internal#2 --> &journal->j_trans_barrier --> &ocfs2_file_ip_alloc_sem_key

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ocfs2_file_ip_alloc_sem_key);
                               lock(&journal->j_trans_barrier);
                               lock(&ocfs2_file_ip_alloc_sem_key);
  lock(sb_internal#2);

 *** DEADLOCK ***

5 locks held by syz.3.1199/7699:
 #0: ffff888052c4e0e0 (&type->s_umount_key#55/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228
 #1: ffff88807caac460 (sb_writers#14){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:402
 #2: ffff888055a489c8 (&sb->s_type->i_mutex_key#23/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline]
 #2: ffff888055a489c8 (&sb->s_type->i_mutex_key#23/1){+.+.}-{3:3}, at: ovl_workdir_create+0x14f/0x760 fs/overlayfs/super.c:771
 #3: ffff888055a49808 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
 #3: ffff888055a49808 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: ovl_workdir_create+0x521/0x760 fs/overlayfs/super.c:832
 #4: ffff888055a494a0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_setattr+0xd2a/0x1d30 fs/ocfs2/file.c:1262

stack backtrace:
CPU: 0 PID: 7699 Comm: syz.3.1199 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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
 percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
 __sb_start_write include/linux/fs.h:1891 [inline]
 sb_start_intwrite include/linux/fs.h:2013 [inline]
 ocfs2_start_trans+0x2a5/0x6f0 fs/ocfs2/journal.c:372
 ocfs2_setattr+0xd39/0x1d30 fs/ocfs2/file.c:1263
 notify_change+0xc74/0xf40 fs/attr.c:499
 ovl_do_notify_change fs/overlayfs/overlayfs.h:142 [inline]
 ovl_workdir_create+0x58d/0x760 fs/overlayfs/super.c:833
 ovl_make_workdir fs/overlayfs/super.c:1389 [inline]
 ovl_get_workdir+0x3c6/0x1610 fs/overlayfs/super.c:1539
 ovl_fill_super+0x1824/0x2a30 fs/overlayfs/super.c:2095
 mount_nodev+0x52/0xe0 fs/super.c:1489
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
 vfs_get_tree+0x88/0x270 fs/super.c:1573
 do_new_mount+0x24a/0xa40 fs/namespace.c:3078
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
 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: 0033:0x7f763099c819
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:00007f763192b028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7630c15fa0 RCX: 00007f763099c819
RDX: 0000200000000440 RSI: 0000200000000100 RDI: 0000000000000000
RBP: 00007f7630a32c91 R08: 0000200000000300 R09: 0000000000000000
R10: 0000000002000808 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7630c16038 R14: 00007f7630c15fa0 R15: 00007ffe2e8a55f8
 </TASK>
overlayfs: upper fs does not support tmpfile.
overlayfs: upper fs does not support RENAME_WHITEOUT.
overlayfs: upper fs missing required features.