====================================================== WARNING: possible circular locking dependency detected 6.16.0-syzkaller-11241-g186f3edfdd41 #0 Tainted: G W ------------------------------------------------------ syz.6.708/11721 is trying to acquire lock: ffff88805c604f80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] ffff88805c604f80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: ocfs2_remove_inode fs/ocfs2/inode.c:669 [inline] ffff88805c604f80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:832 [inline] ffff88805c604f80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] ffff88805c604f80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: ocfs2_evict_inode+0x153d/0x40c0 fs/ocfs2/inode.c:1230 but task is already holding lock: ffff88805c6ae080 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] ffff88805c6ae080 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:790 [inline] ffff88805c6ae080 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] ffff88805c6ae080 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_evict_inode+0xf86/0x40c0 fs/ocfs2/inode.c:1230 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_write+0x3a/0x50 kernel/locking/rwsem.c:1575 inode_lock include/linux/fs.h:869 [inline] ocfs2_del_inode_from_orphan+0x134/0x740 fs/ocfs2/namei.c:2727 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2305 [inline] ocfs2_dio_end_io+0x47b/0x1100 fs/ocfs2/aops.c:2403 dio_complete+0x25e/0x790 fs/direct-io.c:281 __blockdev_direct_IO+0x2bc0/0x31f0 fs/direct-io.c:1303 ocfs2_direct_IO+0x260/0x2d0 fs/ocfs2/aops.c:2440 generic_file_direct_write+0x1dc/0x3e0 mm/filemap.c:4109 __generic_file_write_iter+0x120/0x240 mm/filemap.c:4278 ocfs2_file_write_iter+0x157d/0x1d20 fs/ocfs2/file.c:2469 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x554/0xaa0 fs/read_write.c:686 ksys_write+0x14b/0x260 fs/read_write.c:738 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 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_write+0x3a/0x50 kernel/locking/rwsem.c:1575 ocfs2_create_local_dquot+0x19d/0x1a40 fs/ocfs2/quota_local.c:1227 ocfs2_acquire_dquot+0x80f/0xb30 fs/ocfs2/quota_global.c:883 dqget+0x7be/0xf20 fs/quota/dquot.c:977 __dquot_initialize+0x3b3/0xcb0 fs/quota/dquot.c:1505 ocfs2_get_init_inode+0x13b/0x1b0 fs/ocfs2/namei.c:202 ocfs2_mknod+0x863/0x2050 fs/ocfs2/namei.c:310 ocfs2_mkdir+0x191/0x440 fs/ocfs2/namei.c:656 vfs_mkdir+0x303/0x510 fs/namei.c:4366 do_mkdirat+0x247/0x590 fs/namei.c:4399 __do_sys_mkdirat fs/namei.c:4416 [inline] __se_sys_mkdirat fs/namei.c:4414 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4414 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 (&dquot->dq_lock){+.+.}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 __mutex_lock_common kernel/locking/rtmutex_api.c:535 [inline] mutex_lock_nested+0x5a/0x1d0 kernel/locking/rtmutex_api.c:547 wait_on_dquot fs/quota/dquot.c:354 [inline] dqget+0x73a/0xf20 fs/quota/dquot.c:972 __dquot_initialize+0x3b3/0xcb0 fs/quota/dquot.c:1505 ocfs2_get_init_inode+0x13b/0x1b0 fs/ocfs2/namei.c:202 ocfs2_mknod+0x863/0x2050 fs/ocfs2/namei.c:310 ocfs2_mkdir+0x191/0x440 fs/ocfs2/namei.c:656 vfs_mkdir+0x303/0x510 fs/namei.c:4366 do_mkdirat+0x247/0x590 fs/namei.c:4399 __do_sys_mkdirat fs/namei.c:4416 [inline] __se_sys_mkdirat fs/namei.c:4414 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4414 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 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}: 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 down_write+0x3a/0x50 kernel/locking/rwsem.c:1575 inode_lock include/linux/fs.h:869 [inline] ocfs2_remove_inode fs/ocfs2/inode.c:669 [inline] ocfs2_wipe_inode fs/ocfs2/inode.c:832 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] ocfs2_evict_inode+0x153d/0x40c0 fs/ocfs2/inode.c:1230 evict+0x501/0x9c0 fs/inode.c:810 d_delete_notify include/linux/fsnotify.h:377 [inline] vfs_rmdir+0x3ec/0x520 fs/namei.c:4474 do_rmdir+0x25f/0x550 fs/namei.c:4516 __do_sys_rmdir fs/namei.c:4535 [inline] __se_sys_rmdir fs/namei.c:4533 [inline] __x64_sys_rmdir+0x47/0x50 fs/namei.c:4533 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: &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6 --> &ocfs2_quota_ip_alloc_sem_key --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2); lock(&ocfs2_quota_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6); *** DEADLOCK *** 4 locks held by syz.6.708/11721: #0: ffff8880373b4488 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557 #1: ffff88805c6acf80 (&type->i_mutex_dir_key#20/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:914 [inline] #1: ffff88805c6acf80 (&type->i_mutex_dir_key#20/1){+.+.}-{4:4}, at: do_rmdir+0x1b2/0x550 fs/namei.c:4508 #2: ffff8880317c4e30 (&osb->nfs_sync_rwlock){++++}-{4:4}, at: ocfs2_nfs_sync_lock+0x106/0x250 fs/ocfs2/dlmglue.c:2875 #3: ffff88805c6ae080 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #3: ffff88805c6ae080 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:790 [inline] #3: ffff88805c6ae080 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] #3: ffff88805c6ae080 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_evict_inode+0xf86/0x40c0 fs/ocfs2/inode.c:1230 stack backtrace: CPU: 1 UID: 0 PID: 11721 Comm: syz.6.708 Tainted: G W 6.16.0-syzkaller-11241-g186f3edfdd41 #0 PREEMPT_{RT,(full)} Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: 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 down_write+0x3a/0x50 kernel/locking/rwsem.c:1575 inode_lock include/linux/fs.h:869 [inline] ocfs2_remove_inode fs/ocfs2/inode.c:669 [inline] ocfs2_wipe_inode fs/ocfs2/inode.c:832 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] ocfs2_evict_inode+0x153d/0x40c0 fs/ocfs2/inode.c:1230 evict+0x501/0x9c0 fs/inode.c:810 d_delete_notify include/linux/fsnotify.h:377 [inline] vfs_rmdir+0x3ec/0x520 fs/namei.c:4474 do_rmdir+0x25f/0x550 fs/namei.c:4516 __do_sys_rmdir fs/namei.c:4535 [inline] __se_sys_rmdir fs/namei.c:4533 [inline] __x64_sys_rmdir+0x47/0x50 fs/namei.c:4533 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: 0033:0x7fa87bbbeb69 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:00007fa879a05038 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 00007fa87bde6080 RCX: 00007fa87bbbeb69 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000040 RBP: 00007fa87bc41df1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fa87bde6080 R15: 00007ffe9bf25968