------------[ cut here ]------------ f2fs_msg: 10 callbacks suppressed F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock ODEBUG: init active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x90 kernel/workqueue.c:1414 WARNING: CPU: 1 PID: 30194 at lib/debugobjects.c:329 debug_print_object+0x16a/0x210 lib/debugobjects.c:326 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 30194 Comm: syz-executor6 Not tainted 4.18.0-rc7+ #174 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+0x1c9/0x2b4 lib/dump_stack.c:113 F2FS-fs (loop1): Wrong SIT boundary, start(2048) end(3072) blocks(10240) panic+0x238/0x4e7 kernel/panic.c:184 __warn.cold.8+0x163/0x1ba kernel/panic.c:536 report_bug+0x252/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296 F2FS-fs (loop1): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0) do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992 F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock RIP: 0010:debug_print_object+0x16a/0x210 lib/debugobjects.c:326 Code: F2FS-fs (loop1): Wrong SIT boundary, start(2048) end(3072) blocks(10240) 3a 87 48 89 fa 48 c1 ea 03 F2FS-fs (loop1): Can't find valid F2FS filesystem in 2th superblock 80 3c 02 00 0f 85 92 00 00 00 48 8b 14 dd a0 74 3a 87 4c 89 f6 48 c7 c7 40 6a 3a 87 e8 86 b0 e6 fd <0f> 0b 83 05 29 e7 29 05 01 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f RSP: 0018:ffff880188d9f658 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffc90006c1b000 RDX: 0000000000036cd2 RSI: ffffffff81632481 RDI: ffff880188d9f330 RBP: ffff880188d9f698 R08: ffff880188d92540 R09: fffffbfff0ff11f4 R10: fffffbfff0ff11f4 R11: ffffffff87f88fa3 R12: 0000000000000001 R13: ffffffff87f9c9e0 R14: ffffffff873a7040 R15: ffffffff816918a0 __debug_object_init+0x8e9/0x12e0 lib/debugobjects.c:403 debug_object_init+0x16/0x20 lib/debugobjects.c:429 debug_timer_init kernel/time/timer.c:704 [inline] debug_init kernel/time/timer.c:757 [inline] init_timer_key+0xa9/0x490 kernel/time/timer.c:806 vsock_stream_connect+0xc7a/0xfc0 net/vmw_vsock/af_vsock.c:1224 __sys_connect+0x37d/0x4c0 net/socket.c:1674 __do_sys_connect net/socket.c:1685 [inline] __se_sys_connect net/socket.c:1682 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:1682 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456b29 Code: fd b4 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 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fea6c2b5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007fea6c2b66d4 RCX: 0000000000456b29 RDX: 0000000000000010 RSI: 0000000020000100 RDI: 0000000000000014 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cacf8 R14: 00000000004c2abc R15: 0000000000000000 ====================================================== WARNING: possible circular locking dependency detected 4.18.0-rc7+ #174 Not tainted ------------------------------------------------------ syz-executor6/30194 is trying to acquire lock: 0000000016c79989 ((console_sem).lock){-.-.}, at: down_trylock+0x13/0x70 kernel/locking/semaphore.c:136 but task is already holding lock: 000000002720658b (&obj_hash[i].lock){-.-.}, at: __debug_object_init+0x127/0x12e0 lib/debugobjects.c:381 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&obj_hash[i].lock){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152 __debug_object_init+0x127/0x12e0 lib/debugobjects.c:381 debug_object_init+0x16/0x20 lib/debugobjects.c:429 debug_hrtimer_init kernel/time/hrtimer.c:410 [inline] debug_init kernel/time/hrtimer.c:458 [inline] hrtimer_init+0x97/0x480 kernel/time/hrtimer.c:1308 init_dl_task_timer+0x1b/0x50 kernel/sched/deadline.c:1056 __sched_fork+0x2ae/0x590 kernel/sched/core.c:2185 init_idle+0x75/0x7a0 kernel/sched/core.c:5405 sched_init+0xbf3/0xd2c kernel/sched/core.c:6103 start_kernel+0x47d/0x949 init/main.c:602 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:452 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:433 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:242 -> #2 (&rq->lock){-.-.}: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 rq_lock kernel/sched/sched.h:1812 [inline] task_fork_fair+0x93/0x680 kernel/sched/fair.c:9952 sched_fork+0x446/0xb40 kernel/sched/core.c:2381 copy_process.part.39+0x1bf5/0x70b0 kernel/fork.c:1796 copy_process kernel/fork.c:1639 [inline] _do_fork+0x291/0x12a0 kernel/fork.c:2122 kernel_thread+0x34/0x40 kernel/fork.c:2181 rest_init+0x22/0xe4 init/main.c:408 start_kernel+0x90e/0x949 init/main.c:738 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:452 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:433 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:242 -> #1 (&p->pi_lock){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152 try_to_wake_up+0xd2/0x12a0 kernel/sched/core.c:1985 wake_up_process+0x10/0x20 kernel/sched/core.c:2148 __up.isra.1+0x1c0/0x2a0 kernel/locking/semaphore.c:262 up+0x13c/0x1c0 kernel/locking/semaphore.c:187 __up_console_sem+0xbe/0x1b0 kernel/printk/printk.c:242 console_unlock+0x7a2/0x10b0 kernel/printk/printk.c:2411 vprintk_emit+0x6c6/0xdf0 kernel/printk/printk.c:1907 vprintk_default+0x28/0x30 kernel/printk/printk.c:1948 vprintk_func+0x7a/0xe7 kernel/printk/printk_safe.c:382 printk+0xa7/0xcf kernel/printk/printk.c:1981 load_umh+0x51/0xbd net/bpfilter/bpfilter_kern.c:98 do_one_initcall+0x127/0x913 init/main.c:884 do_initcall_level init/main.c:952 [inline] do_initcalls init/main.c:960 [inline] do_basic_setup init/main.c:978 [inline] kernel_init_freeable+0x49b/0x58e init/main.c:1135 kernel_init+0x11/0x1b3 init/main.c:1061 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 -> #0 ((console_sem).lock){-.-.}: lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152 down_trylock+0x13/0x70 kernel/locking/semaphore.c:136 __down_trylock_console_sem+0xae/0x200 kernel/printk/printk.c:225 console_trylock+0x15/0xa0 kernel/printk/printk.c:2230 console_trylock_spinning kernel/printk/printk.c:1643 [inline] vprintk_emit+0x6ad/0xdf0 kernel/printk/printk.c:1906 vprintk_default+0x28/0x30 kernel/printk/printk.c:1948 vprintk_func+0x7a/0xe7 kernel/printk/printk_safe.c:382 printk+0xa7/0xcf kernel/printk/printk.c:1981 __warn_printk+0x8c/0xe0 kernel/panic.c:590 debug_print_object+0x16a/0x210 lib/debugobjects.c:326 __debug_object_init+0x8e9/0x12e0 lib/debugobjects.c:403 debug_object_init+0x16/0x20 lib/debugobjects.c:429 debug_timer_init kernel/time/timer.c:704 [inline] debug_init kernel/time/timer.c:757 [inline] init_timer_key+0xa9/0x490 kernel/time/timer.c:806 vsock_stream_connect+0xc7a/0xfc0 net/vmw_vsock/af_vsock.c:1224 __sys_connect+0x37d/0x4c0 net/socket.c:1674 __do_sys_connect net/socket.c:1685 [inline] __se_sys_connect net/socket.c:1682 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:1682 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: (console_sem).lock --> &rq->lock --> &obj_hash[i].lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&obj_hash[i].lock); lock(&rq->lock); lock(&obj_hash[i].lock); lock((console_sem).lock); *** DEADLOCK *** 2 locks held by syz-executor6/30194: #0: 00000000b0d72520 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 00000000b0d72520 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0x1e3/0xfc0 net/vmw_vsock/af_vsock.c:1152 #1: 000000002720658b (&obj_hash[i].lock){-.-.}, at: __debug_object_init+0x127/0x12e0 lib/debugobjects.c:381 stack backtrace: CPU: 1 PID: 30194 Comm: syz-executor6 Not tainted 4.18.0-rc7+ #174 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+0x1c9/0x2b4 lib/dump_stack.c:113 print_circular_bug.isra.36.cold.57+0x1bd/0x27d kernel/locking/lockdep.c:1227 check_prev_add kernel/locking/lockdep.c:1867 [inline] check_prevs_add kernel/locking/lockdep.c:1980 [inline] validate_chain kernel/locking/lockdep.c:2421 [inline] __lock_acquire+0x3449/0x5020 kernel/locking/lockdep.c:3435 lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152 down_trylock+0x13/0x70 kernel/locking/semaphore.c:136 __down_trylock_console_sem+0xae/0x200 kernel/printk/printk.c:225 console_trylock+0x15/0xa0 kernel/printk/printk.c:2230 console_trylock_spinning kernel/printk/printk.c:1643 [inline] vprintk_emit+0x6ad/0xdf0 kernel/printk/printk.c:1906 vprintk_default+0x28/0x30 kernel/printk/printk.c:1948 vprintk_func+0x7a/0xe7 kernel/printk/printk_safe.c:382 printk+0xa7/0xcf kernel/printk/printk.c:1981 __warn_printk+0x8c/0xe0 kernel/panic.c:590 debug_print_object+0x16a/0x210 lib/debugobjects.c:326 __debug_object_init+0x8e9/0x12e0 lib/debugobjects.c:403 debug_object_init+0x16/0x20 lib/debugobjects.c:429 debug_timer_init kernel/time/timer.c:704 [inline] debug_init kernel/time/timer.c:757 [inline] init_timer_key+0xa9/0x490 kernel/time/timer.c:806 vsock_stream_connect+0xc7a/0xfc0 net/vmw_vsock/af_vsock.c:1224 __sys_connect+0x37d/0x4c0 net/socket.c:1674 __do_sys_connect net/socket.c:1685 [inline] __se_sys_connect net/socket.c:1682 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:1682 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456b29 Code: fd b4 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 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fea6c2b5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007fea6c2b66d4 RCX: 0000000000456b29 RDX: 0000000000000010 RSI: 0000000020000100 RDI: 0000000000000014 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cacf8 R14: 00000000004c2abc R15: 0000000000000000 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..