audit: type=1326 audit(1539268404.574:292): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=11908 comm="syz-executor5" exe="/root/syz-executor5" sig=9 arch=c000003e syscall=228 compat=0 ip=0x45a37a code=0x0 FAT-fs (loop2): Unrecognized mount option "4_¿[" or missing value INFO: task syz-executor2:11892 blocked for more than 140 seconds. Not tainted 4.19.0-rc7+ #57 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D23552 11892 5450 0x00000004 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 schedule+0xfe/0x460 kernel/sched/core.c:3517 fanotify_get_response fs/notify/fanotify/fanotify.c:68 [inline] fanotify_handle_event+0x7fb/0x9a0 fs/notify/fanotify/fanotify.c:245 send_to_group fs/notify/fsnotify.c:234 [inline] fsnotify+0x87f/0x12f0 fs/notify/fsnotify.c:367 fsnotify_perm include/linux/fsnotify.h:52 [inline] security_file_open+0x16f/0x1b0 security/security.c:986 do_dentry_open+0x331/0x1250 fs/open.c:758 vfs_open+0xa0/0xd0 fs/open.c:880 do_last fs/namei.c:3418 [inline] path_openat+0x12bf/0x5160 fs/namei.c:3534 do_filp_open+0x255/0x380 fs/namei.c:3564 do_sys_open+0x568/0x700 fs/open.c:1063 ksys_open include/linux/syscalls.h:1276 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457519 Code: 87 0a 8b 0d dd 60 09 01 83 f9 01 0f 85 1c 01 00 00 b9 01 00 00 00 88 0d 19 66 09 01 84 c9 0f 84 fd 00 00 00 b9 01 00 00 00 88 <0d> 02 66 09 01 48 8b 05 9b 71 07 01 48 89 04 24 e8 42 2c fc ff 8b RSP: 002b:00007fbf94ee1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457519 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbf94ee26d4 R13: 00000000004bdae2 R14: 00000000004cc628 R15: 00000000ffffffff INFO: task syz-executor2:11897 blocked for more than 140 seconds. Not tainted 4.19.0-rc7+ #57 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D25216 11897 5450 0x00000004 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 schedule+0xfe/0x460 kernel/sched/core.c:3517 fanotify_get_response fs/notify/fanotify/fanotify.c:68 [inline] fanotify_handle_event+0x7fb/0x9a0 fs/notify/fanotify/fanotify.c:245 send_to_group fs/notify/fsnotify.c:234 [inline] fsnotify+0x87f/0x12f0 fs/notify/fsnotify.c:367 fsnotify_perm include/linux/fsnotify.h:52 [inline] security_file_open+0x16f/0x1b0 security/security.c:986 do_dentry_open+0x331/0x1250 fs/open.c:758 vfs_open+0xa0/0xd0 fs/open.c:880 do_last fs/namei.c:3418 [inline] path_openat+0x12bf/0x5160 fs/namei.c:3534 do_filp_open+0x255/0x380 fs/namei.c:3564 do_sys_open+0x568/0x700 fs/open.c:1063 __do_sys_openat fs/open.c:1090 [inline] __se_sys_openat fs/open.c:1084 [inline] __x64_sys_openat+0x9d/0x100 fs/open.c:1084 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457519 Code: 87 0a 8b 0d dd 60 09 01 83 f9 01 0f 85 1c 01 00 00 b9 01 00 00 00 88 0d 19 66 09 01 84 c9 0f 84 fd 00 00 00 b9 01 00 00 00 88 <0d> 02 66 09 01 48 8b 05 9b 71 07 01 48 89 04 24 e8 42 2c fc ff 8b RSP: 002b:00007fbf94ec0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457519 RDX: 0000000000000000 RSI: 0000000020000140 RDI: ffffffffffffff9c RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbf94ec16d4 R13: 00000000004c2b1e R14: 00000000004d4158 R15: 00000000ffffffff INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 PID: 982 Comm: khungtaskd Not tainted 4.19.0-rc7+ #57 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+0x1c4/0x2b4 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.3+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline] watchdog+0xb3e/0x1050 kernel/hung_task.c:265 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.0-rc7+ #57 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rcu_nmi_enter+0x175/0x1e0 kernel/rcu/tree.c:953 Code: 00 48 8b 45 d0 65 48 33 04 25 28 00 00 00 75 72 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 91 9b fe ff 41 bc 01 00 00 00 55 ff ff ff 0f 0b e9 3b ff ff ff 4c 89 f7 e8 27 4a 58 00 e9 5c RSP: 0018:ffff8801dae07c20 EFLAGS: 00000096 RAX: 000000000027fb14 RBX: ffff8801dae23980 RCX: ffffffff81689781 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff8801dae23990 RBP: ffff8801dae07cb0 R08: ffffed003b5c4733 R09: ffffed003b5c4732 R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: 0000000000000001 R13: 1ffff1003b5c0f85 R14: ffff8801dae23988 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001d2977000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_irq_enter+0xce/0x100 kernel/rcu/tree.c:992 irq_enter+0xa/0xe0 kernel/softirq.c:346 scheduler_ipi+0x3d0/0xad0 kernel/sched/core.c:1770 smp_reschedule_interrupt+0x109/0x650 arch/x86/kernel/smp.c:278 reschedule_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:888 RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:57 Code: e9 2c ff ff ff 48 89 c7 48 89 45 d8 e8 63 eb 11 fa 48 8b 45 d8 e9 ca fe ff ff 48 89 df e8 52 eb 11 fa eb 82 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 90 90 90 90 90 RSP: 0018:ffffffff89207bb8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02 RAX: dffffc0000000000 RBX: 1ffffffff1240f7b RCX: ffffffff8184e1ca RDX: 1ffffffff1263e54 RSI: ffffffff8184e1e4 RDI: ffffffff8931f2a0 RBP: ffffffff89207bb8 R08: ffffffff89276e40 R09: ffffed003b5c4732 R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: ffffffff89207c78 R13: ffffffff89f3bee0 R14: 0000000000000000 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline] default_idle+0xbf/0x490 arch/x86/kernel/process.c:498 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:489 default_idle_call+0x6d/0x90 kernel/sched/idle.c:93 cpuidle_idle_call kernel/sched/idle.c:153 [inline] do_idle+0x3db/0x5b0 kernel/sched/idle.c:262 cpu_startup_entry+0x10c/0x120 kernel/sched/idle.c:368 rest_init+0xe2/0xe5 init/main.c:442 start_kernel+0x8f4/0x92f init/main.c:739 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:470 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:451 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243