netlink: 'syz-executor0': attribute type 4 has an invalid length. overlayfs: './file0' not a directory ====================================================== kobject: 'kvm' (000000005648f35d): kobject_uevent_env WARNING: possible circular locking dependency detected 5.0.0-rc5 #60 Not tainted ------------------------------------------------------ syz-executor1/7244 is trying to acquire lock: 00000000eb7d2e7d (&ovl_i_mutex_dir_key[depth]){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline] 00000000eb7d2e7d (&ovl_i_mutex_dir_key[depth]){++++}, at: lookup_slow+0x4a/0x80 fs/namei.c:1687 but task is already holding lock: kobject: 'kvm' (000000005648f35d): fill_kobj_path: path = '/devices/virtual/misc/kvm' 000000000380b084 (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds fs/exec.c:1407 [inline] 000000000380b084 (&sig->cred_guard_mutex){+.+.}, at: __do_execve_file.isra.0+0x376/0x23f0 fs/exec.c:1750 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&sig->cred_guard_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1310 kernel/locking/mutex.c:1072 mutex_lock_killable_nested+0x16/0x20 kernel/locking/mutex.c:1102 lock_trace+0x4a/0xe0 fs/proc/base.c:384 proc_pid_syscall+0x98/0x250 fs/proc/base.c:619 proc_single_show+0xf6/0x180 fs/proc/base.c:739 seq_read+0x4db/0x1130 fs/seq_file.c:229 do_loop_readv_writev fs/read_write.c:700 [inline] do_loop_readv_writev fs/read_write.c:687 [inline] do_iter_read+0x4a9/0x660 fs/read_write.c:921 vfs_readv+0xf0/0x160 fs/read_write.c:983 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x475/0x890 fs/splice.c:417 do_splice_to+0x12a/0x190 fs/splice.c:880 splice_direct_to_actor+0x2d2/0x970 fs/splice.c:957 do_splice_direct+0x1da/0x2a0 fs/splice.c:1066 do_sendfile+0x597/0xd00 fs/read_write.c:1436 __do_sys_sendfile64 fs/read_write.c:1497 [inline] __se_sys_sendfile64 fs/read_write.c:1483 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1483 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #2 (&p->lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 seq_read+0x71/0x1130 fs/seq_file.c:161 proc_reg_read+0x1fa/0x2c0 fs/proc/inode.c:229 do_loop_readv_writev fs/read_write.c:700 [inline] do_loop_readv_writev fs/read_write.c:687 [inline] do_iter_read+0x4a9/0x660 fs/read_write.c:921 vfs_readv+0xf0/0x160 fs/read_write.c:983 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x475/0x890 fs/splice.c:417 do_splice_to+0x12a/0x190 fs/splice.c:880 splice_direct_to_actor+0x2d2/0x970 fs/splice.c:957 do_splice_direct+0x1da/0x2a0 fs/splice.c:1066 do_sendfile+0x597/0xd00 fs/read_write.c:1436 __do_sys_sendfile64 fs/read_write.c:1497 [inline] __se_sys_sendfile64 fs/read_write.c:1483 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1483 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (sb_writers#3){.+.+}: percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] __sb_start_write+0x20b/0x360 fs/super.c:1389 sb_start_write include/linux/fs.h:1603 [inline] mnt_want_write+0x3f/0xc0 fs/namespace.c:357 ovl_want_write+0x76/0xa0 fs/overlayfs/util.c:24 ovl_do_remove+0xe9/0xd70 fs/overlayfs/dir.c:840 ovl_rmdir+0x1b/0x20 fs/overlayfs/dir.c:890 vfs_rmdir fs/namei.c:3879 [inline] vfs_rmdir+0x19c/0x470 fs/namei.c:3858 do_rmdir+0x39e/0x420 fs/namei.c:3940 __do_sys_rmdir fs/namei.c:3958 [inline] __se_sys_rmdir fs/namei.c:3956 [inline] __x64_sys_rmdir+0x36/0x40 fs/namei.c:3956 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&ovl_i_mutex_dir_key[depth]){++++}: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3841 down_read+0x3b/0x90 kernel/locking/rwsem.c:24 inode_lock_shared include/linux/fs.h:767 [inline] lookup_slow+0x4a/0x80 fs/namei.c:1687 walk_component+0x74b/0x2000 fs/namei.c:1810 link_path_walk.part.0+0x980/0x1340 fs/namei.c:2141 link_path_walk fs/namei.c:2072 [inline] path_openat+0x1f9/0x4690 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3564 do_open_execat+0x13b/0x6d0 fs/exec.c:856 __do_execve_file.isra.0+0x178d/0x23f0 fs/exec.c:1758 do_execveat_common fs/exec.c:1865 [inline] do_execve fs/exec.c:1882 [inline] __do_sys_execve fs/exec.c:1963 [inline] __se_sys_execve fs/exec.c:1958 [inline] __x64_sys_execve+0x8f/0xc0 fs/exec.c:1958 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: &ovl_i_mutex_dir_key[depth] --> &p->lock --> &sig->cred_guard_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sig->cred_guard_mutex); lock(&p->lock); lock(&sig->cred_guard_mutex); lock(&ovl_i_mutex_dir_key[depth]); *** DEADLOCK *** 1 lock held by syz-executor1/7244: #0: 000000000380b084 (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds fs/exec.c:1407 [inline] #0: 000000000380b084 (&sig->cred_guard_mutex){+.+.}, at: __do_execve_file.isra.0+0x376/0x23f0 fs/exec.c:1750 stack backtrace: CPU: 1 PID: 7244 Comm: syz-executor1 Not tainted 5.0.0-rc5 #60 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1224 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2350 [inline] __lock_acquire+0x2f00/0x4700 kernel/locking/lockdep.c:3338 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3841 down_read+0x3b/0x90 kernel/locking/rwsem.c:24 inode_lock_shared include/linux/fs.h:767 [inline] lookup_slow+0x4a/0x80 fs/namei.c:1687 walk_component+0x74b/0x2000 fs/namei.c:1810 link_path_walk.part.0+0x980/0x1340 fs/namei.c:2141 link_path_walk fs/namei.c:2072 [inline] path_openat+0x1f9/0x4690 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3564 do_open_execat+0x13b/0x6d0 fs/exec.c:856 __do_execve_file.isra.0+0x178d/0x23f0 fs/exec.c:1758 do_execveat_common fs/exec.c:1865 [inline] do_execve fs/exec.c:1882 [inline] __do_sys_execve fs/exec.c:1963 [inline] __se_sys_execve fs/exec.c:1958 [inline] __x64_sys_execve+0x8f/0xc0 fs/exec.c:1958 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e39 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fee9bf78c78 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e39 RDX: 0000000020000680 RSI: 0000000020000440 RDI: 00000000200002c0 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fee9bf796d4 R13: 00000000004be429 R14: 00000000004cebc8 R15: 00000000ffffffff kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' overlayfs: './file0' not a directory kobject: 'kvm' (000000005648f35d): kobject_uevent_env kobject: 'kvm' (000000005648f35d): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000a5db2155): kobject_uevent_env kobject: 'loop2' (00000000a5db2155): fill_kobj_path: path = '/devices/virtual/block/loop2' overlayfs: './file0' not a directory overlayfs: unrecognized mount option "upper K)file" or missing value kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' overlayfs: unrecognized mount option "upper K)file" or missing value kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' overlayfs: './file0' not a directory kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' overlayfs: missing 'workdir' kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' overlayfs: missing 'workdir' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' overlayfs: './file0' not a directory kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000a5db2155): kobject_uevent_env kobject: 'loop2' (00000000a5db2155): fill_kobj_path: path = '/devices/virtual/block/loop2' overlayfs: './file0' not a directory overlayfs: unrecognized mount option "zUj=:J1tW7) 4%榞" or missing value overlayfs: filesystem on './file0' not supported as upperdir kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env overlayfs: unrecognized mount option "zUj=:J1tW7) 4%榞" or missing value kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' overlayfs: './file0' not a directory overlayfs: missing 'lowerdir' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' overlayfs: missing 'lowerdir' kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' overlayfs: missing 'lowerdir' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' libceph: parse_ips bad ip '::,, nullb' kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env audit: type=1804 audit(1549397802.197:151): pid=7342 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor5" name="/root/syzkaller-testdir619555362/syzkaller.NiRR3t/420/file0/file1" dev="sda1" ino=16511 res=1 kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' validate_nla: 8 callbacks suppressed netlink: 'syz-executor0': attribute type 4 has an invalid length. kobject: 'loop2' (00000000a5db2155): kobject_uevent_env overlayfs: './file0' not a directory kobject: 'loop2' (00000000a5db2155): fill_kobj_path: path = '/devices/virtual/block/loop2' overlayfs: failed to resolve './file1-Xs^l˦=q4jd(gdks0ߌIсz gh2lbcXIf': -2 overlayfs: './file0' not a directory kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env overlayfs: unrecognized mount option "lower`z0F꼜+Kdir./file1" or missing value netlink: 'syz-executor0': attribute type 4 has an invalid length. kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' overlayfs: unrecognized mount option "lower`z0F꼜+Kdir./file1" or missing value kobject: 'loop4' (0000000023d9a193): kobject_uevent_env overlayfs: failed to resolve './file1Wqn': -2 kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' overlayfs: failed to resolve './file1Wqn': -2 overlayfs: './file0' not a directory kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000a5db2155): kobject_uevent_env kobject: 'loop2' (00000000a5db2155): fill_kobj_path: path = '/devices/virtual/block/loop2' netlink: 'syz-executor0': attribute type 4 has an invalid length. overlayfs: './file0' not a directory overlayfs: './file0' not a directory kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env overlayfs: failed to resolve './file1~qX': -2 kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' overlayfs: failed to resolve './file1~qX': -2 kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env netlink: 'syz-executor0': attribute type 4 has an invalid length. kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' overlayfs: './file0' not a directory kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000a5db2155): kobject_uevent_env kobject: 'loop2' (00000000a5db2155): fill_kobj_path: path = '/devices/virtual/block/loop2' netlink: 'syz-executor0': attribute type 4 has an invalid length. overlayfs: './file0' not a directory overlayfs: missing 'lowerdir' overlayfs: filesystem on './file0' not supported as upperdir kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 'syz-executor0': attribute type 4 has an invalid length. kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' overlayfs: missing 'lowerdir' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' overlayfs: missing 'lowerdir' overlayfs: './file0' not a directory overlayfs: './file0' not a directory kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000a5db2155): kobject_uevent_env netlink: 'syz-executor0': attribute type 4 has an invalid length. kobject: 'loop2' (00000000a5db2155): fill_kobj_path: path = '/devices/virtual/block/loop2' overlayfs: missing 'lowerdir' overlayfs: './file0' not a directory kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' netlink: 'syz-executor0': attribute type 4 has an invalid length. overlayfs: missing 'lowerdir' kobject: 'bpq0' (00000000abe11d2e): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'bpq0' (00000000abe11d2e): kobject_uevent_env kobject: 'bpq0' (00000000abe11d2e): fill_kobj_path: path = '/devices/virtual/net/bpq0' kobject: 'queues' (00000000d12e628f): kobject_add_internal: parent: 'bpq0', set: '' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'queues' (00000000d12e628f): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'queues' (00000000d12e628f): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (000000006e78bada): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (000000006e78bada): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'rx-0' (000000006e78bada): fill_kobj_path: path = '/devices/virtual/net/bpq0/queues/rx-0' kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'tx-0' (0000000029d78b39): kobject_add_internal: parent: 'queues', set: 'queues' netlink: 'syz-executor0': attribute type 4 has an invalid length. overlayfs: unrecognized mount option "upperdGr=./file:" or missing value kobject: 'tx-0' (0000000029d78b39): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'tx-0' (0000000029d78b39): fill_kobj_path: path = '/devices/virtual/net/bpq0/queues/tx-0' overlayfs: './file0' not a directory kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' overlayfs: unrecognized mount option "upperdGr=./file:" or missing value : renamed from bpq0 kobject: 'bpq0' (00000000abe11d2e): fill_kobj_path: path = '/devices/virtual/net/bpq0' kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env netlink: 'syz-executor0': attribute type 4 has an invalid length. kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: '' (00000000abe11d2e): kobject_uevent_env kobject: '' (00000000abe11d2e): fill_kobj_path: path = '/devices/virtual/net/' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env overlayfs: './file0' not a directory kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'rx-0' (000000006e78bada): kobject_cleanup, parent 00000000d12e628f kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'rx-0' (000000006e78bada): auto cleanup 'remove' event kobject: 'rx-0' (000000006e78bada): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'rx-0' (000000006e78bada): fill_kobj_path: path = '/devices/virtual/net//queues/rx-0' kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env kobject: 'rx-0' (000000006e78bada): auto cleanup kobject_del kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'rx-0' (000000006e78bada): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (0000000029d78b39): kobject_cleanup, parent 00000000d12e628f kobject: 'tx-0' (0000000029d78b39): auto cleanup 'remove' event kobject: 'tx-0' (0000000029d78b39): kobject_uevent_env kobject: 'tx-0' (0000000029d78b39): fill_kobj_path: path = '/devices/virtual/net//queues/tx-0' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'tx-0' (0000000029d78b39): auto cleanup kobject_del kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'tx-0' (0000000029d78b39): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000d12e628f): kobject_cleanup, parent (null) kobject: 'queues' (00000000d12e628f): calling ktype release kobject: 'queues' (00000000d12e628f): kset_release kobject: 'queues': free name kobject: '' (00000000abe11d2e): kobject_uevent_env kobject: '' (00000000abe11d2e): fill_kobj_path: path = '/devices/virtual/net/' kobject: '' (00000000abe11d2e): kobject_cleanup, parent (null) kobject: '' (00000000abe11d2e): calling ktype release kobject: '': free name kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000a5db2155): kobject_uevent_env kobject: 'loop2' (00000000a5db2155): fill_kobj_path: path = '/devices/virtual/block/loop2' overlayfs: unrecognized mount option "lowMrdir=./file1" or missing value overlayfs: unrecognized mount option "lowMrdir=./file1" or missing value audit: type=1804 audit(1549397806.487:152): pid=7557 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor1" name="/root/syzkaller-testdir977161907/syzkaller.R27WR8/248/file0/file1" dev="overlay" ino=160504 res=1 overlayfs: './file0' not a directory kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env overlayfs: './file0' not a directory kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' audit: type=1804 audit(1549397806.537:153): pid=7569 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor1" name="/root/syzkaller-testdir977161907/syzkaller.R27WR8/248/file0/file1" dev="overlay" ino=160504 res=1 kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' audit: type=1804 audit(1549397806.537:154): pid=7569 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor1" name="/root/syzkaller-testdir977161907/syzkaller.R27WR8/248/file0/file1" dev="overlay" ino=160504 res=1 overlayfs: './file0' not a directory kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env overlayfs: './file0' not a directory overlayfs: './file0' not a directory kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000a5db2155): kobject_uevent_env overlayfs: failed to resolve './file1': -2 kobject: 'loop2' (00000000a5db2155): fill_kobj_path: path = '/devices/virtual/block/loop2' overlayfs: missing 'lowerdir' overlayfs: missing 'lowerdir' kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env overlayfs: failed to resolve './file1': -2 kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' overlayfs: './file0' not a directory kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' overlayfs: './file0' not a directory kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env overlayfs: './file0' not a directory kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' overlayfs: unrecognized mount option "pperdir=./file0" or missing value kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000a5db2155): kobject_uevent_env kobject: 'loop2' (00000000a5db2155): fill_kobj_path: path = '/devices/virtual/block/loop2' validate_nla: 6 callbacks suppressed netlink: 'syz-executor0': attribute type 4 has an invalid length. overlayfs: failed to resolve './le1': -2 overlayfs: filesystem on './file0' not supported as upperdir kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env overlayfs: './file0' not a directory kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 'syz-executor0': attribute type 4 has an invalid length. kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' overlayfs: './file0' not a directory kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' overlayfs: './file0' not a directory kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' netlink: 'syz-executor0': attribute type 4 has an invalid length. kobject: 'loop2' (00000000a5db2155): kobject_uevent_env kobject: 'loop2' (00000000a5db2155): fill_kobj_path: path = '/devices/virtual/block/loop2' overlayfs: unrecognized mount option "upppdPr=./file0" or missing value kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' overlayfs: unrecognized mount option "upppdPr=./file0" or missing value kobject: 'loop0' (00000000fd0df3a7): kobject_uevent_env kobject: 'loop0' (00000000fd0df3a7): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 'syz-executor0': attribute type 4 has an invalid length. kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env overlayfs: './file0' not a directory kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env netlink: 'syz-executor0': attribute type 4 has an invalid length. kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env overlayfs: unrecognized mount option "" or missing value overlayfs: unrecognized mount option "seclabel" or missing value overlayfs: filesystem on './file0' not supported as upperdir kobject: 'loop3' (00000000c0cf009e): kobject_uevent_env QAT: Invalid ioctl kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' overlayfs: unrecognized mount option "" or missing value overlayfs: './file0' not a directory kobject: 'loop3' (00000000c0cf009e): fill_kobj_path: path = '/devices/virtual/block/loop3' overlayfs: unrecognized mount option "seclabel" or missing value kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000023d9a193): kobject_uevent_env kobject: 'loop4' (0000000023d9a193): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000002b9dfc0e): kobject_uevent_env kobject: 'loop5' (000000002b9dfc0e): fill_kobj_path: path = '/devices/virtual/block/loop5'