====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz-executor/12671 is trying to acquire lock: ffff888058333480 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] ffff888058333480 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_remove_inode+0x15b/0x860 fs/ocfs2/inode.c:733 but task is already holding lock: ffff888058335100 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] ffff888058335100 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_wipe_inode+0x2ce/0x1270 fs/ocfs2/inode.c:854 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}: down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1028 [inline] ocfs2_del_inode_from_orphan+0x112/0x700 fs/ocfs2/namei.c:2731 ocfs2_dio_end_io_write+0x2cd/0xee0 fs/ocfs2/aops.c:2305 ocfs2_dio_end_io+0x136/0x2c0 fs/ocfs2/aops.c:2403 dio_complete+0x224/0x950 fs/direct-io.c:281 __blockdev_direct_IO+0x309f/0x3ae0 fs/direct-io.c:1303 ocfs2_direct_IO+0x263/0x360 fs/ocfs2/aops.c:2440 generic_file_direct_write+0x198/0x410 mm/filemap.c:4248 __generic_file_write_iter+0x11b/0x240 mm/filemap.c:4417 ocfs2_file_write_iter+0xdd9/0x2270 fs/ocfs2/file.c:2476 iter_file_splice_write+0x830/0x10a0 fs/splice.c:736 do_splice_from fs/splice.c:936 [inline] direct_splice_actor+0x192/0x6c0 fs/splice.c:1159 splice_direct_to_actor+0x345/0xa30 fs/splice.c:1103 do_splice_direct_actor fs/splice.c:1202 [inline] do_splice_direct+0x174/0x240 fs/splice.c:1228 do_sendfile+0xadc/0xe20 fs/read_write.c:1372 __do_sys_sendfile64 fs/read_write.c:1433 [inline] __se_sys_sendfile64 fs/read_write.c:1419 [inline] __x64_sys_sendfile64+0x1d8/0x220 fs/read_write.c:1419 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}: down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 ocfs2_create_local_dquot+0x157/0xb30 fs/ocfs2/quota_local.c:1227 ocfs2_acquire_dquot+0x83e/0xb50 fs/ocfs2/quota_global.c:883 dqget+0x666/0x1130 fs/quota/dquot.c:980 __dquot_initialize+0x5a5/0xd70 fs/quota/dquot.c:1508 ocfs2_get_init_inode+0xe9/0x1b0 fs/ocfs2/namei.c:206 ocfs2_mknod+0xdb8/0x27d0 fs/ocfs2/namei.c:314 ocfs2_create+0xf4/0x460 fs/ocfs2/namei.c:677 lookup_open.isra.0+0xc47/0x11b0 fs/namei.c:4483 open_last_lookups fs/namei.c:4583 [inline] path_openat+0x2291/0x31a0 fs/namei.c:4827 do_file_open+0x20e/0x430 fs/namei.c:4859 do_sys_openat2+0x10d/0x1e0 fs/open.c:1366 do_sys_open fs/open.c:1372 [inline] __do_sys_openat fs/open.c:1388 [inline] __se_sys_openat fs/open.c:1383 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1383 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&dquot->dq_lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:614 [inline] __mutex_lock+0x1a2/0x1b90 kernel/locking/mutex.c:776 wait_on_dquot fs/quota/dquot.c:357 [inline] dqget+0x5c7/0x1130 fs/quota/dquot.c:975 __dquot_initialize+0x5a5/0xd70 fs/quota/dquot.c:1508 ocfs2_get_init_inode+0xe9/0x1b0 fs/ocfs2/namei.c:206 ocfs2_mknod+0xdb8/0x27d0 fs/ocfs2/namei.c:314 ocfs2_create+0xf4/0x460 fs/ocfs2/namei.c:677 lookup_open.isra.0+0xc47/0x11b0 fs/namei.c:4483 open_last_lookups fs/namei.c:4583 [inline] path_openat+0x2291/0x31a0 fs/namei.c:4827 do_file_open+0x20e/0x430 fs/namei.c:4859 do_sys_openat2+0x10d/0x1e0 fs/open.c:1366 do_sys_open fs/open.c:1372 [inline] __do_sys_openat fs/open.c:1388 [inline] __se_sys_openat fs/open.c:1383 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1383 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}: 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+0x14b8/0x2630 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1cf/0x380 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1028 [inline] ocfs2_remove_inode+0x15b/0x860 fs/ocfs2/inode.c:733 ocfs2_wipe_inode+0x6dd/0x1270 fs/ocfs2/inode.c:896 ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline] ocfs2_evict_inode+0x809/0x1550 fs/ocfs2/inode.c:1299 evict+0x3c2/0xad0 fs/inode.c:846 iput_final fs/inode.c:1966 [inline] iput.part.0+0x605/0xf50 fs/inode.c:2015 iput+0x35/0x40 fs/inode.c:1981 d_delete_notify include/linux/fsnotify.h:377 [inline] vfs_rmdir fs/namei.c:5351 [inline] vfs_rmdir+0x5c8/0x8a0 fs/namei.c:5311 filename_rmdir+0x31a/0x5c0 fs/namei.c:5393 __do_sys_unlinkat fs/namei.c:5568 [inline] __se_sys_unlinkat fs/namei.c:5561 [inline] __x64_sys_unlinkat+0xf5/0x130 fs/namei.c:5561 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 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: &ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] --> &ocfs2_quota_ip_alloc_sem_key --> &ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE] Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]); lock(&ocfs2_quota_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]); *** DEADLOCK *** 4 locks held by syz-executor/12671: #0: ffff88803a420420 (sb_writers#20){.+.+}-{0:0}, at: filename_rmdir+0x1ff/0x5c0 fs/namei.c:5382 #1: ffff888073263480 (&type->i_mutex_dir_key#9/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1073 [inline] #1: ffff888073263480 (&type->i_mutex_dir_key#9/1){+.+.}-{4:4}, at: __start_dirop fs/namei.c:2923 [inline] #1: ffff888073263480 (&type->i_mutex_dir_key#9/1){+.+.}-{4:4}, at: start_dirop fs/namei.c:2934 [inline] #1: ffff888073263480 (&type->i_mutex_dir_key#9/1){+.+.}-{4:4}, at: filename_rmdir+0x258/0x5c0 fs/namei.c:5386 #2: ffff88804af5cbd0 (&osb->nfs_sync_rwlock){.+.+}-{4:4}, at: ocfs2_nfs_sync_lock+0xe4/0x2e0 fs/ocfs2/dlmglue.c:2875 #3: ffff888058335100 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] #3: ffff888058335100 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_wipe_inode+0x2ce/0x1270 fs/ocfs2/inode.c:854 stack backtrace: CPU: 0 UID: 0 PID: 12671 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 print_circular_bug.cold+0x178/0x1c7 kernel/locking/lockdep.c:2043 check_noncircular+0x146/0x160 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 kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x14b8/0x2630 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1cf/0x380 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1028 [inline] ocfs2_remove_inode+0x15b/0x860 fs/ocfs2/inode.c:733 ocfs2_wipe_inode+0x6dd/0x1270 fs/ocfs2/inode.c:896 ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline] ocfs2_evict_inode+0x809/0x1550 fs/ocfs2/inode.c:1299 evict+0x3c2/0xad0 fs/inode.c:846 iput_final fs/inode.c:1966 [inline] iput.part.0+0x605/0xf50 fs/inode.c:2015 iput+0x35/0x40 fs/inode.c:1981 d_delete_notify include/linux/fsnotify.h:377 [inline] vfs_rmdir fs/namei.c:5351 [inline] vfs_rmdir+0x5c8/0x8a0 fs/namei.c:5311 filename_rmdir+0x31a/0x5c0 fs/namei.c:5393 __do_sys_unlinkat fs/namei.c:5568 [inline] __se_sys_unlinkat fs/namei.c:5561 [inline] __x64_sys_unlinkat+0xf5/0x130 fs/namei.c:5561 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1a40b9b8b7 Code: 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 b8 07 01 00 00 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:00007ffda2ef6ba8 EFLAGS: 00000207 ORIG_RAX: 0000000000000107 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007f1a40b9b8b7 RDX: 0000000000000200 RSI: 00007ffda2ef7d50 RDI: 00000000ffffff9c RBP: 00007f1a40c31f90 R08: 0000000000008560 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000207 R12: 00007ffda2ef7d50 R13: 00007f1a40c31f90 R14: 00000000000b2416 R15: 00007ffda2ef9f10 ocfs2: Unmounting device (7,1) on (node local)