======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.7.219/7084 is trying to acquire lock:
ffff888036b307f0 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_setattr+0x9eb/0x1d10 fs/ocfs2/file.c:1275

but task is already holding lock:
ffff8880630f1890 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_setattr+0x9dc/0x1d10 fs/ocfs2/file.c:1274

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+0x3a/0x50 kernel/locking/rwsem.c:1631
       ocfs2_try_remove_refcount_tree+0xb6/0x360 fs/ocfs2/refcounttree.c:932
       ocfs2_xattr_set+0x639/0x13a0 fs/ocfs2/xattr.c:3713
       ocfs2_set_acl+0x6fd/0x7b0 fs/ocfs2/acl.c:255
       ocfs2_iop_set_acl+0x1b1/0x2b0 fs/ocfs2/acl.c:287
       set_posix_acl fs/posix_acl.c:955 [inline]
       vfs_remove_acl+0x56e/0x870 fs/posix_acl.c:1242
       ovl_do_remove_acl fs/overlayfs/overlayfs.h:361 [inline]
       ovl_workdir_create+0x53a/0x8b0 fs/overlayfs/super.c:369
       ovl_make_workdir fs/overlayfs/super.c:678 [inline]
       ovl_get_workdir fs/overlayfs/super.c:836 [inline]
       ovl_fill_super_creds fs/overlayfs/super.c:1449 [inline]
       ovl_fill_super+0x19ad/0x5d40 fs/overlayfs/super.c:1560
       vfs_get_super fs/super.c:1267 [inline]
       get_tree_nodev+0xbb/0x150 fs/super.c:1286
       vfs_get_tree+0x92/0x2a0 fs/super.c:1694
       fc_mount fs/namespace.c:1198 [inline]
       do_new_mount_fc fs/namespace.c:3765 [inline]
       do_new_mount+0x319/0xdc0 fs/namespace.c:3841
       do_mount fs/namespace.c:4174 [inline]
       __do_sys_mount fs/namespace.c:4390 [inline]
       __se_sys_mount+0x31d/0x420 fs/namespace.c:4367
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (&oi->ip_xattr_sem){++++}-{4:4}:
       down_read+0x97/0x200 kernel/locking/rwsem.c:1574
       ocfs2_init_acl+0x1c3/0x800 fs/ocfs2/acl.c:367
       ocfs2_mknod+0x166a/0x2240 fs/ocfs2/namei.c:414
       ocfs2_mkdir+0x181/0x460 fs/ocfs2/namei.c:660
       vfs_mkdir+0x402/0x620 fs/namei.c:5272
       filename_mkdirat+0x289/0x520 fs/namei.c:5305
       __do_sys_mkdir fs/namei.c:5332 [inline]
       __se_sys_mkdir+0x34/0x150 fs/namei.c:5329
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&journal->j_trans_barrier){.+.+}-{4:4}:
       down_read+0x97/0x200 kernel/locking/rwsem.c:1574
       ocfs2_start_trans+0x3ac/0x700 fs/ocfs2/journal.c:369
       ocfs2_shutdown_local_alloc+0x1ef/0xa50 fs/ocfs2/localalloc.c:417
       ocfs2_dismount_volume+0x1ec/0x8d0 fs/ocfs2/super.c:1824
       generic_shutdown_super+0x13d/0x2d0 fs/super.c:647
       kill_block_super+0x44/0x90 fs/super.c:1665
       deactivate_locked_super+0xbc/0x130 fs/super.c:477
       cleanup_mnt+0x3d3/0x460 fs/namespace.c:1317
       task_work_run+0x1d9/0x270 kernel/task_work.c:233
       get_signal+0x1182/0x12c0 kernel/signal.c:2810
       arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
       __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
       exit_to_user_mode_loop+0x104/0x730 kernel/entry/common.c:101
       __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
       syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
       syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
       do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
       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+0x1520/0x2ce0 kernel/locking/lockdep.c:5237
       lock_acquire+0x106/0x350 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:367
       ocfs2_setattr+0x9eb/0x1d10 fs/ocfs2/file.c:1275
       notify_change+0xbb8/0xec0 fs/attr.c:556
       ovl_do_notify_change fs/overlayfs/overlayfs.h:209 [inline]
       ovl_workdir_create+0x69c/0x8b0 fs/overlayfs/super.c:379
       ovl_make_workdir fs/overlayfs/super.c:678 [inline]
       ovl_get_workdir fs/overlayfs/super.c:836 [inline]
       ovl_fill_super_creds fs/overlayfs/super.c:1449 [inline]
       ovl_fill_super+0x19ad/0x5d40 fs/overlayfs/super.c:1560
       vfs_get_super fs/super.c:1267 [inline]
       get_tree_nodev+0xbb/0x150 fs/super.c:1286
       vfs_get_tree+0x92/0x2a0 fs/super.c:1694
       fc_mount fs/namespace.c:1198 [inline]
       do_new_mount_fc fs/namespace.c:3765 [inline]
       do_new_mount+0x319/0xdc0 fs/namespace.c:3841
       do_mount fs/namespace.c:4174 [inline]
       __do_sys_mount fs/namespace.c:4390 [inline]
       __se_sys_mount+0x31d/0x420 fs/namespace.c:4367
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0x174/0x580 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.7.219/7084:
 #0: ffff888037f060d0 (&type->s_umount_key#61/1){+.+.}-{4:4}, at: alloc_super fs/super.c:345 [inline]
 #0: ffff888037f060d0 (&type->s_umount_key#61/1){+.+.}-{4:4}, at: sget_fc+0x938/0x1910 fs/super.c:766
 #1: ffff888036b30500 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:494
 #2: ffff8880630f1c40 (&sb->s_type->i_mutex_key#41){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1024 [inline]
 #2: ffff8880630f1c40 (&sb->s_type->i_mutex_key#41){+.+.}-{4:4}, at: ovl_workdir_create+0x63d/0x8b0 fs/overlayfs/super.c:378
 #3: ffff8880630f1890 (&ocfs2_file_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_setattr+0x9dc/0x1d10 fs/ocfs2/file.c:1274

stack backtrace:
CPU: 1 UID: 0 PID: 7084 Comm: syz.7.219 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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+0x1520/0x2ce0 kernel/locking/lockdep.c:5237
 lock_acquire+0x106/0x350 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:367
 ocfs2_setattr+0x9eb/0x1d10 fs/ocfs2/file.c:1275
 notify_change+0xbb8/0xec0 fs/attr.c:556
 ovl_do_notify_change fs/overlayfs/overlayfs.h:209 [inline]
 ovl_workdir_create+0x69c/0x8b0 fs/overlayfs/super.c:379
 ovl_make_workdir fs/overlayfs/super.c:678 [inline]
 ovl_get_workdir fs/overlayfs/super.c:836 [inline]
 ovl_fill_super_creds fs/overlayfs/super.c:1449 [inline]
 ovl_fill_super+0x19ad/0x5d40 fs/overlayfs/super.c:1560
 vfs_get_super fs/super.c:1267 [inline]
 get_tree_nodev+0xbb/0x150 fs/super.c:1286
 vfs_get_tree+0x92/0x2a0 fs/super.c:1694
 fc_mount fs/namespace.c:1198 [inline]
 do_new_mount_fc fs/namespace.c:3765 [inline]
 do_new_mount+0x319/0xdc0 fs/namespace.c:3841
 do_mount fs/namespace.c:4174 [inline]
 __do_sys_mount fs/namespace.c:4390 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4367
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efde4b4de59
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:00007efde2941028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007efde4dd6270 RCX: 00007efde4b4de59
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007efde4be3e6f R08: 0000200000000100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efde4dd6308 R14: 00007efde4dd6270 R15: 00007fff6ec593f8
 </TASK>
overlayfs: upper fs does not support tmpfile.
overlayfs: upper fs does not support RENAME_WHITEOUT.
overlayfs: upper fs missing required features.