ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.15.0-rc2-syzkaller-00037-g834a4a689699 #0 Not tainted ------------------------------------------------------ syz.0.52/6139 is trying to acquire lock: ffff888062331800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] ffff888062331800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_del_inode_from_orphan+0x15d/0x8c0 fs/ocfs2/namei.c:2727 but task is already holding lock: ffff8880623ebf60 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_dio_end_io_write fs/ocfs2/aops.c:2295 [inline] ffff8880623ebf60 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_dio_end_io+0x454/0x1330 fs/ocfs2/aops.c:2401 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_write+0x9c/0x220 kernel/locking/rwsem.c:1577 ocfs2_create_local_dquot+0x1e5/0x1dd0 fs/ocfs2/quota_local.c:1232 ocfs2_acquire_dquot+0x843/0xb80 fs/ocfs2/quota_global.c:883 dqget+0x770/0xeb0 fs/quota/dquot.c:977 __dquot_initialize+0x335/0xfc0 fs/quota/dquot.c:1505 ocfs2_get_init_inode+0x15a/0x1d0 fs/ocfs2/namei.c:202 ocfs2_mknod+0xcfe/0x2b30 fs/ocfs2/namei.c:310 ocfs2_create+0x1ad/0x480 fs/ocfs2/namei.c:673 lookup_open fs/namei.c:3666 [inline] open_last_lookups fs/namei.c:3765 [inline] path_openat+0x194b/0x35d0 fs/namei.c:4001 do_filp_open+0x284/0x4e0 fs/namei.c:4031 do_sys_openat2+0x12b/0x1d0 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_open fs/open.c:1452 [inline] __se_sys_open fs/open.c:1448 [inline] __x64_sys_open+0x226/0x280 fs/open.c:1448 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&dquot->dq_lock){+.+.}-{4:4}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x1a5/0x10c0 kernel/locking/mutex.c:746 wait_on_dquot fs/quota/dquot.c:354 [inline] dqget+0x6e6/0xeb0 fs/quota/dquot.c:972 __dquot_initialize+0x335/0xfc0 fs/quota/dquot.c:1505 ocfs2_get_init_inode+0x15a/0x1d0 fs/ocfs2/namei.c:202 ocfs2_mknod+0xcfe/0x2b30 fs/ocfs2/namei.c:310 ocfs2_create+0x1ad/0x480 fs/ocfs2/namei.c:673 lookup_open fs/namei.c:3666 [inline] open_last_lookups fs/namei.c:3765 [inline] path_openat+0x194b/0x35d0 fs/namei.c:4001 do_filp_open+0x284/0x4e0 fs/namei.c:4031 do_sys_openat2+0x12b/0x1d0 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_open fs/open.c:1452 [inline] __se_sys_open fs/open.c:1448 [inline] __x64_sys_open+0x226/0x280 fs/open.c:1448 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_write+0x9c/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:867 [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+0x16d7/0x47c0 fs/ocfs2/inode.c:1230 evict+0x4f9/0x9b0 fs/inode.c:810 d_delete_notify include/linux/fsnotify.h:402 [inline] vfs_rmdir+0x3d7/0x510 fs/namei.c:4432 do_rmdir+0x37b/0x550 fs/namei.c:4474 __do_sys_unlinkat fs/namei.c:4648 [inline] __se_sys_unlinkat fs/namei.c:4642 [inline] __x64_sys_unlinkat+0xde/0xf0 fs/namei.c:4642 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain+0xa69/0x24e0 kernel/locking/lockdep.c:3909 __lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_write+0x9c/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:867 [inline] ocfs2_del_inode_from_orphan+0x15d/0x8c0 fs/ocfs2/namei.c:2727 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2303 [inline] ocfs2_dio_end_io+0x568/0x1330 fs/ocfs2/aops.c:2401 dio_complete+0x250/0x720 fs/direct-io.c:281 __blockdev_direct_IO+0x3baf/0x4540 fs/direct-io.c:1303 ocfs2_direct_IO+0x255/0x2c0 fs/ocfs2/aops.c:2438 generic_file_direct_write+0x1e8/0x400 mm/filemap.c:4036 __generic_file_write_iter+0x126/0x230 mm/filemap.c:4205 ocfs2_file_write_iter+0x190f/0x20d0 fs/ocfs2/file.c:2469 do_iter_readv_writev+0x71f/0x9d0 fs/read_write.c:-1 vfs_writev+0x38d/0xbc0 fs/read_write.c:1055 do_pwritev fs/read_write.c:1151 [inline] __do_sys_pwritev2 fs/read_write.c:1209 [inline] __se_sys_pwritev2+0x1b8/0x2d0 fs/read_write.c:1200 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 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] --> &dquot->dq_lock --> &ocfs2_quota_ip_alloc_sem_key Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_quota_ip_alloc_sem_key); lock(&dquot->dq_lock); lock(&ocfs2_quota_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]); *** DEADLOCK *** 3 locks held by syz.0.52/6139: #0: ffff888061bb6420 (sb_writers#12){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3041 [inline] #0: ffff888061bb6420 (sb_writers#12){.+.+}-{0:0}, at: vfs_writev+0x2d8/0xbc0 fs/read_write.c:1053 #1: ffff8880623ec2c0 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #1: ffff8880623ec2c0 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: ocfs2_file_write_iter+0x43c/0x20d0 fs/ocfs2/file.c:2399 #2: ffff8880623ebf60 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_dio_end_io_write fs/ocfs2/aops.c:2295 [inline] #2: ffff8880623ebf60 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_dio_end_io+0x454/0x1330 fs/ocfs2/aops.c:2401 stack backtrace: CPU: 0 UID: 0 PID: 6139 Comm: syz.0.52 Not tainted 6.15.0-rc2-syzkaller-00037-g834a4a689699 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2079 check_noncircular+0x142/0x160 kernel/locking/lockdep.c:2211 check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain+0xa69/0x24e0 kernel/locking/lockdep.c:3909 __lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_write+0x9c/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:867 [inline] ocfs2_del_inode_from_orphan+0x15d/0x8c0 fs/ocfs2/namei.c:2727 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2303 [inline] ocfs2_dio_end_io+0x568/0x1330 fs/ocfs2/aops.c:2401 dio_complete+0x250/0x720 fs/direct-io.c:281 __blockdev_direct_IO+0x3baf/0x4540 fs/direct-io.c:1303 ocfs2_direct_IO+0x255/0x2c0 fs/ocfs2/aops.c:2438 generic_file_direct_write+0x1e8/0x400 mm/filemap.c:4036 __generic_file_write_iter+0x126/0x230 mm/filemap.c:4205 ocfs2_file_write_iter+0x190f/0x20d0 fs/ocfs2/file.c:2469 do_iter_readv_writev+0x71f/0x9d0 fs/read_write.c:-1 vfs_writev+0x38d/0xbc0 fs/read_write.c:1055 do_pwritev fs/read_write.c:1151 [inline] __do_sys_pwritev2 fs/read_write.c:1209 [inline] __se_sys_pwritev2+0x1b8/0x2d0 fs/read_write.c:1200 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f60c398d169 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:00007ffdb34a0a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007f60c3ba5fa0 RCX: 00007f60c398d169 RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000004 RBP: 00007f60c3a0e990 R08: 0000000000000000 R09: 0000000000000003 R10: 0000000000007000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f60c3ba5fa0 R14: 00007f60c3ba5fa0 R15: 0000000000000006