syzbot

(syz.0.17,6003,1):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC.
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
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.17/6003 is trying to acquire lock:
ffff888033bba778 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_setattr+0x969/0x1b40 fs/ocfs2/file.c:1263

but task is already holding lock:
ffff8880583a98d0 (&oi->ip_alloc_sem){+.+.}-{4:4}, at: ocfs2_setattr+0x95a/0x1b40 fs/ocfs2/file.c:1262

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&oi->ip_alloc_sem){+.+.}-{4:4}:
       lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
       down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
       ocfs2_try_remove_refcount_tree+0xb6/0x320 fs/ocfs2/refcounttree.c:932
       ocfs2_xattr_set+0x595/0x11f0 fs/ocfs2/xattr.c:3669
       ocfs2_set_acl+0x701/0x7b0 fs/ocfs2/acl.c:254
       ocfs2_iop_set_acl+0x1aa/0x2a0 fs/ocfs2/acl.c:286
       set_posix_acl fs/posix_acl.c:954 [inline]
       vfs_remove_acl+0x498/0x700 fs/posix_acl.c:1241
       ovl_do_remove_acl fs/overlayfs/overlayfs.h:355 [inline]
       ovl_workdir_create+0x594/0x8b0 fs/overlayfs/super.c:354
       ovl_make_workdir fs/overlayfs/super.c:669 [inline]
       ovl_get_workdir+0x32f/0x17c0 fs/overlayfs/super.c:827
       ovl_fill_super+0x1365/0x35b0 fs/overlayfs/super.c:1406
       vfs_get_super fs/super.c:1325 [inline]
       get_tree_nodev+0xbb/0x150 fs/super.c:1344
       vfs_get_tree+0x8f/0x2b0 fs/super.c:1815
       do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808
       do_mount fs/namespace.c:4136 [inline]
       __do_sys_mount fs/namespace.c:4347 [inline]
       __se_sys_mount+0x317/0x410 fs/namespace.c:4324
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #3 (&oi->ip_xattr_sem){++++}-{4:4}:
       lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
       down_read+0x97/0x1f0 kernel/locking/rwsem.c:1537
       ocfs2_init_acl+0x2f9/0x720 fs/ocfs2/acl.c:366
       ocfs2_mknod+0x1321/0x2050 fs/ocfs2/namei.c:413
       ocfs2_mkdir+0x191/0x440 fs/ocfs2/namei.c:659
       vfs_mkdir+0x306/0x510 fs/namei.c:4366
       do_mkdirat+0x247/0x590 fs/namei.c:4399
       __do_sys_mkdir fs/namei.c:4421 [inline]
       __se_sys_mkdir fs/namei.c:4419 [inline]
       __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4419
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (jbd2_handle){++++}-{0:0}:
       lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
       start_this_handle+0x1fa7/0x21c0 fs/jbd2/transaction.c:444
       jbd2__journal_start+0x2c1/0x5b0 fs/jbd2/transaction.c:501
       jbd2_journal_start+0x2a/0x40 fs/jbd2/transaction.c:540
       ocfs2_start_trans+0x377/0x6d0 fs/ocfs2/journal.c:374
       ocfs2_modify_bh+0xe8/0x470 fs/ocfs2/quota_local.c:101
       ocfs2_local_read_info+0x1465/0x17e0 fs/ocfs2/quota_local.c:767
       dquot_load_quota_sb+0x78e/0xbd0 fs/quota/dquot.c:2459
       dquot_load_quota_inode+0x2e1/0x5d0 fs/quota/dquot.c:2496
       ocfs2_enable_quotas+0x1c6/0x450 fs/ocfs2/super.c:930
       ocfs2_fill_super+0x5197/0x65f0 fs/ocfs2/super.c:1140
       get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1692
       vfs_get_tree+0x8f/0x2b0 fs/super.c:1815
       do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808
       do_mount fs/namespace.c:4136 [inline]
       __do_sys_mount fs/namespace.c:4347 [inline]
       __se_sys_mount+0x317/0x410 fs/namespace.c:4324
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&journal->j_trans_barrier){.+.+}-{4:4}:
       lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
       down_read+0x97/0x1f0 kernel/locking/rwsem.c:1537
       ocfs2_start_trans+0x36b/0x6d0 fs/ocfs2/journal.c:372
       ocfs2_modify_bh+0xe8/0x470 fs/ocfs2/quota_local.c:101
       ocfs2_local_read_info+0x1465/0x17e0 fs/ocfs2/quota_local.c:767
       dquot_load_quota_sb+0x78e/0xbd0 fs/quota/dquot.c:2459
       dquot_load_quota_inode+0x2e1/0x5d0 fs/quota/dquot.c:2496
       ocfs2_enable_quotas+0x1c6/0x450 fs/ocfs2/super.c:930
       ocfs2_fill_super+0x5197/0x65f0 fs/ocfs2/super.c:1140
       get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1692
       vfs_get_tree+0x8f/0x2b0 fs/super.c:1815
       do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808
       do_mount fs/namespace.c:4136 [inline]
       __do_sys_mount fs/namespace.c:4347 [inline]
       __se_sys_mount+0x317/0x410 fs/namespace.c:4324
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (sb_internal#2){.+.+}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3165 [inline]
       check_prevs_add kernel/locking/lockdep.c:3284 [inline]
       validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908
       __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
       lock_acquire+0x120/0x360 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.h:1798 [inline]
       sb_start_intwrite include/linux/fs.h:1981 [inline]
       ocfs2_start_trans+0x26b/0x6d0 fs/ocfs2/journal.c:370
       ocfs2_setattr+0x969/0x1b40 fs/ocfs2/file.c:1263
       notify_change+0xb31/0xe60 fs/attr.c:552
       ovl_do_notify_change fs/overlayfs/overlayfs.h:203 [inline]
       ovl_workdir_create+0x722/0x8b0 fs/overlayfs/super.c:364
       ovl_make_workdir fs/overlayfs/super.c:669 [inline]
       ovl_get_workdir+0x32f/0x17c0 fs/overlayfs/super.c:827
       ovl_fill_super+0x1365/0x35b0 fs/overlayfs/super.c:1406
       vfs_get_super fs/super.c:1325 [inline]
       get_tree_nodev+0xbb/0x150 fs/super.c:1344
       vfs_get_tree+0x8f/0x2b0 fs/super.c:1815
       do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808
       do_mount fs/namespace.c:4136 [inline]
       __do_sys_mount fs/namespace.c:4347 [inline]
       __se_sys_mount+0x317/0x410 fs/namespace.c:4324
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xfa/0x3b0 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#2 --> &oi->ip_xattr_sem --> &oi->ip_alloc_sem

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&oi->ip_alloc_sem);
                               lock(&oi->ip_xattr_sem);
                               lock(&oi->ip_alloc_sem);
  rlock(sb_internal#2);

 *** DEADLOCK ***

4 locks held by syz.0.17/6003:
 #0: ffff888033ad20d0 (&type->s_umount_key#54/1){+.+.}-{4:4}, at: alloc_super+0x204/0x990 fs/super.c:345
 #1: ffff888033bba488 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
 #2: ffff8880583a9c80 (&sb->s_type->i_mutex_key#22){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline]
 #2: ffff8880583a9c80 (&sb->s_type->i_mutex_key#22){+.+.}-{4:4}, at: ovl_workdir_create+0x6a8/0x8b0 fs/overlayfs/super.c:363
 #3: ffff8880583a98d0 (&oi->ip_alloc_sem){+.+.}-{4:4}, at: ocfs2_setattr+0x95a/0x1b40 fs/ocfs2/file.c:1262

stack backtrace:
CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2043
 check_noncircular+0x134/0x160 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+0xb9b/0x2140 kernel/locking/lockdep.c:3908
 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
 lock_acquire+0x120/0x360 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.h:1798 [inline]
 sb_start_intwrite include/linux/fs.h:1981 [inline]
 ocfs2_start_trans+0x26b/0x6d0 fs/ocfs2/journal.c:370
 ocfs2_setattr+0x969/0x1b40 fs/ocfs2/file.c:1263
 notify_change+0xb31/0xe60 fs/attr.c:552
 ovl_do_notify_change fs/overlayfs/overlayfs.h:203 [inline]
 ovl_workdir_create+0x722/0x8b0 fs/overlayfs/super.c:364
 ovl_make_workdir fs/overlayfs/super.c:669 [inline]
 ovl_get_workdir+0x32f/0x17c0 fs/overlayfs/super.c:827
 ovl_fill_super+0x1365/0x35b0 fs/overlayfs/super.c:1406
 vfs_get_super fs/super.c:1325 [inline]
 get_tree_nodev+0xbb/0x150 fs/super.c:1344
 vfs_get_tree+0x8f/0x2b0 fs/super.c:1815
 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808
 do_mount fs/namespace.c:4136 [inline]
 __do_sys_mount fs/namespace.c:4347 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4324
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6fd1ecebe9
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:00007ffc89408488 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6fd20f5fa0 RCX: 00007f6fd1ecebe9
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007f6fd1f51e19 R08: 0000200000000440 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6fd20f5fa0 R14: 00007f6fd20f5fa0 R15: 0000000000000005
 </TASK>
overlayfs: upper fs does not support tmpfile.
overlayfs: upper fs does not support RENAME_WHITEOUT.
overlayfs: upper fs missing required features.