====================================================== kobject: 'loop5' (000000006146f314): kobject_uevent_env WARNING: possible circular locking dependency detected 5.0.0-rc6+ #70 Not tainted ------------------------------------------------------ syz-executor.4/14464 is trying to acquire lock: kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' 0000000007d5971f (&pipe->mutex/1){+.+.}, at: __pipe_lock fs/pipe.c:83 [inline] 0000000007d5971f (&pipe->mutex/1){+.+.}, at: fifo_open+0x159/0xb00 fs/pipe.c:905 but task is already holding lock: 00000000e1d10ece (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds fs/exec.c:1407 [inline] 00000000e1d10ece (&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: -> #2 (&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 -> #1 (&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 do_splice+0xf7c/0x1330 fs/splice.c:1178 __do_sys_splice fs/splice.c:1419 [inline] __se_sys_splice fs/splice.c:1399 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1399 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&pipe->mutex/1){+.+.}: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3841 __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 __pipe_lock fs/pipe.c:83 [inline] fifo_open+0x159/0xb00 fs/pipe.c:905 do_dentry_open+0x47d/0x1130 fs/open.c:771 vfs_open+0xa0/0xd0 fs/open.c:880 do_last fs/namei.c:3418 [inline] path_openat+0x10d7/0x4690 fs/namei.c:3534 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: &pipe->mutex/1 --> &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(&pipe->mutex/1); *** DEADLOCK *** 1 lock held by syz-executor.4/14464: #0: 00000000e1d10ece (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds fs/exec.c:1407 [inline] #0: 00000000e1d10ece (&sig->cred_guard_mutex){+.+.}, at: __do_execve_file.isra.0+0x376/0x23f0 fs/exec.c:1750 stack backtrace: CPU: 1 PID: 14464 Comm: syz-executor.4 Not tainted 5.0.0-rc6+ #70 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 __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 __pipe_lock fs/pipe.c:83 [inline] fifo_open+0x159/0xb00 fs/pipe.c:905 do_dentry_open+0x47d/0x1130 fs/open.c:771 vfs_open+0xa0/0xd0 fs/open.c:880 do_last fs/namei.c:3418 [inline] path_openat+0x10d7/0x4690 fs/namei.c:3534 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:00007f5e9da1ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e39 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020f8aff8 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5e9da1f6d4 R13: 00000000004be434 R14: 00000000004cec80 R15: 00000000ffffffff kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): kobject_uevent_env base_sock_release(00000000e927342c) sk=00000000930366f4 kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' overlayfs: './file0' not a directory kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' overlayfs: './file0' not a directory kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' cgroup: fork rejected by pids controller in /syz4 kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000003b00c5c0): kobject_uevent_env kobject: 'loop3' (000000003b00c5c0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000006146f314): kobject_uevent_env kobject: 'loop5' (000000006146f314): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env ecryptfs_parse_options: You must supply at least one valid auth tok signature as a mount parameter; see the eCryptfs README kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' Error parsing options; rc = [-22] kobject: 'kvm' (00000000e678432a): kobject_uevent_env kobject: 'kvm' (00000000e678432a): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (000000007ffa7331): kobject_uevent_env ecryptfs_parse_options: You must supply at least one valid auth tok signature as a mount parameter; see the eCryptfs README kobject: 'loop4' (000000007ffa7331): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000fee2895a): kobject_uevent_env audit: type=1326 audit(1550022557.688:90): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=15460 comm="syz-executor.0" exe="/root/syz-executor.0" sig=31 arch=c000003e syscall=228 compat=0 ip=0x45ac9a code=0x0 kobject: 'loop0' (00000000fee2895a): fill_kobj_path: path = '/devices/virtual/block/loop0' Error parsing options; rc = [-22] kobject: 'loop2' (0000000097ed63b0): kobject_uevent_env kobject: 'loop2' (0000000097ed63b0): fill_kobj_path: path = '/devices/virtual/block/loop2' ecryptfs_parse_options: You must supply at least one valid auth tok signature as a mount parameter; see the eCryptfs README kobject: 'loop1' (000000001c97d81e): kobject_uevent_env kobject: 'loop1' (000000001c97d81e): fill_kobj_path: path = '/devices/virtual/block/loop1'