R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8e0dc3c6d4
R13: 00000000004c4f29 R14: 00000000004d8478 R15: 0000000000000003
ntfs: (device loop3): read_ntfs_boot_sector(): Primary boot sector is invalid.
ntfs: (device loop3): read_ntfs_boot_sector(): Mount option errors=recover not used. Aborting without trying to recover.
ntfs: (device loop3): ntfs_fill_super(): Not an NTFS volume.
INFO: task syz-executor4:5928 blocked for more than 140 seconds.
      Not tainted 4.19.0-rc7+ #273
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor4   D18936  5928      1 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
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3575
 __mutex_lock_common kernel/locking/mutex.c:1002 [inline]
 __mutex_lock+0xbe7/0x1700 kernel/locking/mutex.c:1072
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
 __pipe_lock fs/pipe.c:83 [inline]
 pipe_write+0xc0/0xec0 fs/pipe.c:366
 call_write_iter include/linux/fs.h:1808 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x6b8/0x9f0 fs/read_write.c:487
 vfs_write+0x1fc/0x560 fs/read_write.c:549
 ksys_write+0x101/0x260 fs/read_write.c:598
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:607
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x410f70
Code: 48 ff c0 48 89 44 24 28 48 89 c1 48 c1 e0 0d 48 89 04 24 48 89 4c 24 08 e8 1d f1 00 00 0f b6 44 24 51 88 44 24 27 48 8d 0d 6d <4f> 0c 01 48 89 0c 24 48 8b 4c 24 28 48 89 4c 24 08 88 44 24 10 c6
RSP: 002b:00007ffe7e3e11d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000000000c RCX: 0000000000410f70
RDX: 000000000000000c RSI: 00007ffe7e3e1370 RDI: 0000000000000002
RBP: 00007ffe7e3e1370 R08: 0000000001e2c940 R09: 000000000000000c
R10: 0000000001e2c940 R11: 0000000000000246 R12: 000000000000000c
R13: 0000000000000001 R14: 000000000070bf20 R15: 0000000000000004
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 988 Comm: khungtaskd Not tainted 4.19.0-rc7+ #273
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 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:57