BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 PID: 1432 Comm: syz-executor.4 Not tainted 4.14.146 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 add_chain_cache kernel/locking/lockdep.c:2299 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:2411 [inline] validate_chain kernel/locking/lockdep.c:2431 [inline] __lock_acquire.cold+0x2dd/0x8dc kernel/locking/lockdep.c:3487 lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3991 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:152 spin_lock include/linux/spinlock.h:317 [inline] find_inode_nowait+0x6c/0x180 fs/inode.c:1364 ext4_update_other_inodes_time fs/ext4/inode.c:5042 [inline] ext4_do_update_inode fs/ext4/inode.c:5166 [inline] ext4_mark_iloc_dirty+0x1f8b/0x2900 fs/ext4/inode.c:5706 ext4_mark_inode_dirty+0x1f0/0x860 fs/ext4/inode.c:5885 ext4_dirty_inode+0x73/0xa0 fs/ext4/inode.c:5916 __mark_inode_dirty+0x54c/0x1040 fs/fs-writeback.c:2141 mark_inode_dirty include/linux/fs.h:2019 [inline] ext4_setattr+0x9f4/0x2270 fs/ext4/inode.c:5505 notify_change+0x8d1/0xd10 fs/attr.c:313 ovl_set_timestamps+0xdf/0x120 fs/overlayfs/copy_up.c:208 ovl_do_copy_up fs/overlayfs/copy_up.c:580 [inline] ovl_copy_up_one+0x7c6/0x8d0 fs/overlayfs/copy_up.c:637 ovl_copy_up_flags+0xdd/0x130 fs/overlayfs/copy_up.c:685 ovl_copy_up+0x18/0x1c fs/overlayfs/copy_up.c:697 ovl_rename+0x219/0xeb0 fs/overlayfs/dir.c:947 vfs_rename+0x551/0x17d0 fs/namei.c:4493 SYSC_renameat2 fs/namei.c:4641 [inline] SyS_renameat2+0x8c9/0xa30 fs/namei.c:4530 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459a29 RSP: 002b:00007fd6dfd34c78 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459a29 RDX: 0000000000000004 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000002 R09: 0000000000000000 R10: 00000000200001c0 R11: 0000000000000246 R12: 00007fd6dfd356d4 R13: 00000000004c6fd5 R14: 00000000004dc660 R15: 00000000ffffffff overlayfs: filesystem on './file0' not supported as upperdir kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'ip6gre5' (ffff888017699170): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'ip6gre5' (ffff888017699170): kobject_uevent_env kobject: 'ip6gre5' (ffff888017699170): fill_kobj_path: path = '/devices/virtual/net/ip6gre5' kobject: 'queues' (ffff888054dedb48): kobject_add_internal: parent: 'ip6gre5', set: '' kobject: 'queues' (ffff888054dedb48): kobject_uevent_env kobject: 'queues' (ffff888054dedb48): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (ffff88809eb67b50): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (ffff88809eb67b50): kobject_uevent_env kobject: 'rx-0' (ffff88809eb67b50): fill_kobj_path: path = '/devices/virtual/net/ip6gre5/queues/rx-0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'tx-0' (ffff88803aef17d8): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (ffff88803aef17d8): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'tx-0' (ffff88803aef17d8): fill_kobj_path: path = '/devices/virtual/net/ip6gre5/queues/tx-0' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. caif:caif_disconnect_client(): nothing to disconnect XFS (loop0): Invalid superblock magic number caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. XFS (loop0): Invalid superblock magic number kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' caif:caif_disconnect_client(): nothing to disconnect kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' XFS (loop0): Invalid superblock magic number kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' XFS (loop0): Invalid superblock magic number kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '7:10' (ffff88820de76ed0): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: '7:10' (ffff88820de76ed0): kobject_uevent_env kobject: '7:10' (ffff88820de76ed0): fill_kobj_path: path = '/devices/virtual/bdi/7:10' kobject: 'loop10' (ffff88820de777e0): kobject_add_internal: parent: 'block', set: 'devices' kobject: 'loop10' (ffff88820de777e0): kobject_uevent_env kobject: 'loop10' (ffff88820de777e0): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'holders' (ffff8880a3d0ce80): kobject_add_internal: parent: 'loop10', set: '' kobject: 'slaves' (ffff88809680fc80): kobject_add_internal: parent: 'loop10', set: '' kobject: 'loop10' (ffff88820de777e0): kobject_uevent_env kobject: 'loop10' (ffff88820de777e0): fill_kobj_path: path = '/devices/virtual/block/loop10' kobject: 'queue' (ffff8880a3d308d8): kobject_add_internal: parent: 'loop10', set: '' kobject: 'mq' (ffff8880a3d30918): kobject_add_internal: parent: 'loop10', set: '' kobject: 'mq' (ffff8880a3d30918): kobject_uevent_env kobject: 'mq' (ffff8880a3d30918): kobject_uevent_env: filter function caused the event to drop! kobject: '0' (ffff88800e8cf428): kobject_add_internal: parent: 'mq', set: '' kobject: 'cpu0' (ffffe8ffffc99e98): kobject_add_internal: parent: '0', set: '' kobject: 'cpu1' (ffffe8ffffd99e98): kobject_add_internal: parent: '0', set: '' kobject: 'queue' (ffff8880a3d308d8): kobject_uevent_env kobject: 'queue' (ffff8880a3d308d8): kobject_uevent_env: filter function caused the event to drop! kobject: 'iosched' (ffff88800e8ce490): kobject_add_internal: parent: 'queue', set: '' kobject: 'iosched' (ffff88800e8ce490): kobject_uevent_env kobject: 'iosched' (ffff88800e8ce490): kobject_uevent_env: filter function caused the event to drop! kobject: 'integrity' (ffff88820de77cd0): kobject_add_internal: parent: 'loop10', set: '' kobject: 'integrity' (ffff88820de77cd0): kobject_uevent_env kobject: 'integrity' (ffff88820de77cd0): kobject_uevent_env: filter function caused the event to drop! print_req_error: I/O error, dev loop10, sector 0 f2fs_msg: 40 callbacks suppressed F2FS-fs (loop10): Unable to read 1th superblock kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' print_req_error: I/O error, dev loop10, sector 8 F2FS-fs (loop10): Unable to read 2th superblock print_req_error: I/O error, dev loop10, sector 0 F2FS-fs (loop10): Unable to read 1th superblock print_req_error: I/O error, dev loop10, sector 8 F2FS-fs (loop10): Unable to read 2th superblock print_req_error: I/O error, dev loop10, sector 0 F2FS-fs (loop10): Unable to read 1th superblock print_req_error: I/O error, dev loop10, sector 8 F2FS-fs (loop10): Unable to read 2th superblock print_req_error: I/O error, dev loop10, sector 0 F2FS-fs (loop10): Unable to read 1th superblock print_req_error: I/O error, dev loop10, sector 8 F2FS-fs (loop10): Unable to read 2th superblock kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' print_req_error: I/O error, dev loop10, sector 0 F2FS-fs (loop10): Unable to read 1th superblock print_req_error: I/O error, dev loop10, sector 8 F2FS-fs (loop10): Unable to read 2th superblock kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready device sit0 entered promiscuous mode kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' device sit0 left promiscuous mode device sit0 entered promiscuous mode kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env device sit0 left promiscuous mode kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' device sit0 entered promiscuous mode kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' device sit0 left promiscuous mode device sit0 left promiscuous mode kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' device sit0 entered promiscuous mode device sit0 entered promiscuous mode kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' device sit0 left promiscuous mode device sit0 entered promiscuous mode device sit0 left promiscuous mode device sit0 entered promiscuous mode netlink: 49 bytes leftover after parsing attributes in process `syz-executor.5'. device sit0 entered promiscuous mode kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' netlink: 49 bytes leftover after parsing attributes in process `syz-executor.5'. kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env netlink: 49 bytes leftover after parsing attributes in process `syz-executor.5'. kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' device sit0 left promiscuous mode device sit0 entered promiscuous mode netlink: 49 bytes leftover after parsing attributes in process `syz-executor.5'. device sit0 left promiscuous mode kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' device sit0 entered promiscuous mode netlink: 49 bytes leftover after parsing attributes in process `syz-executor.5'. kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff88807680cbe0): kobject_uevent_env kobject: 'loop0' (ffff88807680cbe0): fill_kobj_path: path = '/devices/virtual/block/loop0' device sit0 left promiscuous mode kobject: 'loop4' (ffff8880a4ab40e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4ab40e0): fill_kobj_path: path = '/devices/virtual/block/loop4'