====================================================== WARNING: possible circular locking dependency detected 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 Not tainted ------------------------------------------------------ syz-executor/7846 is trying to acquire lock: ffff0000f9a93480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] ffff0000f9a93480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}, at: ocfs2_remove_inode fs/ocfs2/inode.c:669 [inline] ffff0000f9a93480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:832 [inline] ffff0000f9a93480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] ffff0000f9a93480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}, at: ocfs2_evict_inode+0x1300/0x3bf8 fs/ocfs2/inode.c:1230 but task is already holding lock: ffff0000f9869800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] ffff0000f9869800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:790 [inline] ffff0000f9869800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] ffff0000f9869800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xe50/0x3bf8 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]){+.+.}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:867 [inline] ocfs2_del_inode_from_orphan+0x100/0x608 fs/ocfs2/namei.c:2727 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2303 [inline] ocfs2_dio_end_io+0x3e8/0xe7c fs/ocfs2/aops.c:2401 dio_complete+0x238/0x6bc fs/direct-io.c:281 __blockdev_direct_IO+0x2238/0x2818 fs/direct-io.c:1303 ocfs2_direct_IO+0x210/0x280 fs/ocfs2/aops.c:2438 generic_file_direct_write+0x1a8/0x350 mm/filemap.c:4046 __generic_file_write_iter+0x10c/0x204 mm/filemap.c:4215 ocfs2_file_write_iter+0x1328/0x1b84 fs/ocfs2/file.c:2469 iter_file_splice_write+0x718/0xca4 fs/splice.c:738 do_splice_from fs/splice.c:935 [inline] direct_splice_actor+0xec/0x14c fs/splice.c:1158 splice_direct_to_actor+0x414/0x994 fs/splice.c:1102 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0x130/0x210 fs/splice.c:1227 do_sendfile+0x3cc/0x658 fs/read_write.c:1370 __do_sys_sendfile64 fs/read_write.c:1431 [inline] __se_sys_sendfile64 fs/read_write.c:1417 [inline] __arm64_sys_sendfile64+0x1b4/0x274 fs/read_write.c:1417 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #2 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 ocfs2_create_local_dquot+0x164/0x1444 fs/ocfs2/quota_local.c:1227 ocfs2_acquire_dquot+0x6a8/0xa10 fs/ocfs2/quota_global.c:883 dqget+0x654/0xccc fs/quota/dquot.c:977 dquot_set_dqblk+0x40/0xe50 fs/quota/dquot.c:2820 quota_setquota+0x3b4/0x3bc fs/quota/quota.c:310 do_quotactl+0x65c/0x738 fs/quota/quota.c:802 __do_sys_quotactl_fd fs/quota/quota.c:1000 [inline] __se_sys_quotactl_fd fs/quota/quota.c:973 [inline] __arm64_sys_quotactl_fd+0x2f8/0x4d4 fs/quota/quota.c:973 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #1 (&dquot->dq_lock){+.+.}-{4:4}: __mutex_lock_common+0x1d0/0x2190 kernel/locking/mutex.c:602 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 wait_on_dquot fs/quota/dquot.c:354 [inline] dqget+0x5e4/0xccc fs/quota/dquot.c:972 __dquot_initialize+0x2d4/0xa80 fs/quota/dquot.c:1505 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1567 ocfs2_get_init_inode+0x134/0x1a8 fs/ocfs2/namei.c:202 ocfs2_mknod+0x734/0x1cf0 fs/ocfs2/namei.c:310 ocfs2_mkdir+0x190/0x474 fs/ocfs2/namei.c:656 vfs_mkdir+0x284/0x424 fs/namei.c:4366 do_mkdirat+0x1f8/0x4c8 fs/namei.c:4399 __do_sys_mkdirat fs/namei.c:4416 [inline] __se_sys_mkdirat fs/namei.c:4414 [inline] __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4414 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3168 [inline] check_prevs_add kernel/locking/lockdep.c:3287 [inline] validate_chain kernel/locking/lockdep.c:3911 [inline] __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5240 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5871 down_write+0x50/0xc0 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+0x1300/0x3bf8 fs/ocfs2/inode.c:1230 evict+0x414/0x928 fs/inode.c:810 iput_final fs/inode.c:1898 [inline] iput+0x6e4/0x83c fs/inode.c:1924 d_delete_notify include/linux/fsnotify.h:402 [inline] vfs_rmdir+0x358/0x464 fs/namei.c:4474 do_rmdir+0x24c/0x56c fs/namei.c:4516 __do_sys_unlinkat fs/namei.c:4690 [inline] __se_sys_unlinkat fs/namei.c:4684 [inline] __arm64_sys_unlinkat+0xc8/0xf8 fs/namei.c:4684 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 other info that might help us debug this: Chain exists of: &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7 --> &ocfs2_quota_ip_alloc_sem_key --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type] Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]); lock(&ocfs2_quota_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7); *** DEADLOCK *** 4 locks held by syz-executor/7846: #0: ffff0000d6162428 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:557 #1: ffff0000f986b480 (&type->i_mutex_dir_key#15/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:912 [inline] #1: ffff0000f986b480 (&type->i_mutex_dir_key#15/1){+.+.}-{4:4}, at: do_rmdir+0x174/0x56c fs/namei.c:4508 #2: ffff0000d047cbd0 (&osb->nfs_sync_rwlock){.+.+}-{4:4}, at: ocfs2_nfs_sync_lock+0xf4/0x228 fs/ocfs2/dlmglue.c:2875 #3: ffff0000f9869800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #3: ffff0000f9869800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:790 [inline] #3: ffff0000f9869800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] #3: ffff0000f9869800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xe50/0x3bf8 fs/ocfs2/inode.c:1230 stack backtrace: CPU: 0 UID: 0 PID: 7846 Comm: syz-executor Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:501 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x324/0x32c kernel/locking/lockdep.c:2046 check_noncircular+0x154/0x174 kernel/locking/lockdep.c:2178 check_prev_add kernel/locking/lockdep.c:3168 [inline] check_prevs_add kernel/locking/lockdep.c:3287 [inline] validate_chain kernel/locking/lockdep.c:3911 [inline] __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5240 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5871 down_write+0x50/0xc0 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+0x1300/0x3bf8 fs/ocfs2/inode.c:1230 evict+0x414/0x928 fs/inode.c:810 iput_final fs/inode.c:1898 [inline] iput+0x6e4/0x83c fs/inode.c:1924 d_delete_notify include/linux/fsnotify.h:402 [inline] vfs_rmdir+0x358/0x464 fs/namei.c:4474 do_rmdir+0x24c/0x56c fs/namei.c:4516 __do_sys_unlinkat fs/namei.c:4690 [inline] __se_sys_unlinkat fs/namei.c:4684 [inline] __arm64_sys_unlinkat+0xc8/0xf8 fs/namei.c:4684 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 ocfs2: Unmounting device (7,5) on (node local) syz-executor: attempt to access beyond end of device loop5: rw=2049, sector=45096, nr_sectors = 8 limit=40427 CPU: 1 UID: 0 PID: 7846 Comm: syz-executor Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:501 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 f2fs_handle_critical_error+0x34c/0x4b8 fs/f2fs/super.c:4297 f2fs_stop_checkpoint+0x5c/0x70 fs/f2fs/checkpoint.c:35 f2fs_write_end_io+0x58c/0x818 fs/f2fs/data.c:353 bio_endio+0x804/0x840 block/bio.c:1645 submit_bio_noacct+0x158/0x176c block/blk-core.c:881 submit_bio+0x354/0x4d4 block/blk-core.c:916 f2fs_submit_write_bio+0x13c/0x324 fs/f2fs/data.c:528 __submit_merged_bio+0x254/0x704 fs/f2fs/data.c:543 __f2fs_submit_merged_write fs/f2fs/data.c:638 [inline] __submit_merged_write_cond+0x23c/0x4ac fs/f2fs/data.c:660 f2fs_submit_merged_write_cond fs/f2fs/data.c:677 [inline] f2fs_write_cache_pages fs/f2fs/data.c:3201 [inline] __f2fs_write_data_pages fs/f2fs/data.c:3282 [inline] f2fs_write_data_pages+0x1d28/0x2634 fs/f2fs/data.c:3309 do_writepages+0x270/0x468 mm/page-writeback.c:2636 filemap_fdatawrite_wbc mm/filemap.c:386 [inline] __filemap_fdatawrite_range mm/filemap.c:419 [inline] __filemap_fdatawrite mm/filemap.c:425 [inline] filemap_fdatawrite+0x144/0x1e8 mm/filemap.c:430 f2fs_sync_dirty_inodes+0x2b8/0x788 fs/f2fs/checkpoint.c:1108 block_operations fs/f2fs/checkpoint.c:1247 [inline] f2fs_write_checkpoint+0x684/0x1694 fs/f2fs/checkpoint.c:1638 kill_f2fs_super+0x21c/0x584 fs/f2fs/super.c:5076 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1417 __cleanup_mnt+0x20/0x30 fs/namespace.c:1424 task_work_run+0x1dc/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x16c/0x1ec arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xb4/0x17c arch/arm64/kernel/entry-common.c:768 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 F2FS-fs (loop5): Stopped filesystem due to reason: 3