INFO: task syz-executor300:9376 blocked for more than 143 seconds.
      Not tainted 5.3.0-rc4+ #74
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor300 D28408  9376   9374 0x00004000
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x877/0xc50 kernel/sched/core.c:3880
 schedule+0x131/0x1e0 kernel/sched/core.c:3944
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003
 __mutex_lock_common+0x1401/0x2820 kernel/locking/mutex.c:1007
 __mutex_lock kernel/locking/mutex.c:1077 [inline]
 mutex_lock_nested+0x1b/0x30 kernel/locking/mutex.c:1092
 fuse_lock_inode+0xab/0xf0 fs/fuse/inode.c:362
 fuse_lookup+0x3e/0x360 fs/fuse/dir.c:335
 __lookup_slow+0x285/0x380 fs/namei.c:1669
 lookup_slow fs/namei.c:1686 [inline]
 walk_component+0x2d6/0x7b0 fs/namei.c:1808
 link_path_walk+0x75b/0x1410 fs/namei.c:2125
 path_openat+0x139/0x4460 fs/namei.c:3532
 do_filp_open+0x192/0x3d0 fs/namei.c:3563
 do_sys_open+0x29f/0x560 fs/open.c:1089
 __do_sys_open fs/open.c:1107 [inline]
 __se_sys_open fs/open.c:1102 [inline]
 __x64_sys_open+0x87/0x90 fs/open.c:1102
 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x444ca0
Code: Bad RIP value.
RSP: 002b:00007ffe2a7c9170 EFLAGS: 00000202 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000444ca0
RDX: 0000000000000000 RSI: 0000000000090800 RDI: 00000000004ae91e
RBP: 00000000000024a5 R08: 00000000000024a0 R09: 00005555558af880
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe2a7c93a0
R13: 00000000004075d0 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor300:9381 blocked for more than 143 seconds.
      Not tainted 5.3.0-rc4+ #74
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor300 D28920  9381   9376 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x877/0xc50 kernel/sched/core.c:3880
 schedule+0x131/0x1e0 kernel/sched/core.c:3944
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003
 __mutex_lock_common+0x1401/0x2820 kernel/locking/mutex.c:1007
 __mutex_lock kernel/locking/mutex.c:1077 [inline]
 mutex_lock_nested+0x1b/0x30 kernel/locking/mutex.c:1092
 fuse_lock_inode+0xab/0xf0 fs/fuse/inode.c:362
 fuse_lookup+0x3e/0x360 fs/fuse/dir.c:335
 __lookup_slow+0x285/0x380 fs/namei.c:1669
 lookup_slow fs/namei.c:1686 [inline]
 walk_component+0x2d6/0x7b0 fs/namei.c:1808
 link_path_walk+0x75b/0x1410 fs/namei.c:2125
 path_openat+0x139/0x4460 fs/namei.c:3532
 do_filp_open+0x192/0x3d0 fs/namei.c:3563
 do_sys_open+0x29f/0x560 fs/open.c:1089
 __do_sys_open fs/open.c:1107 [inline]
 __se_sys_open fs/open.c:1102 [inline]
 __x64_sys_open+0x87/0x90 fs/open.c:1102
 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x405810
Code: 74 18 48 39 58 08 75 f2 48 39 68 10 75 ec 5b 5d 41 5c c3 0f 1f 80 00 00 00 00 bf 18 00 00 00 e8 76 d3 ff ff 48 85 c0 74 e5 4d <85> e4 48 c7 00 00 00 00 00 48 89 58 08 48 89 68 10 74 16 48 8b 15
RSP: 002b:00007ffe2a7c8e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffe2a7c8ea4 RCX: 0000000000405810
RDX: 00007ffe2a7c8eaa RSI: 0000000000080001 RDI: 00000000004ae93c
RBP: 00007ffe2a7c8ea0 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000407540
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc4+ #74
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+0x1d8/0x2f8 lib/dump_stack.c:113
 nmi_cpu_backtrace+0xaf/0x1a0 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x174/0x290 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace+0x17/0x20 include/linux/nmi.h:146
 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
 watchdog+0xbb9/0xbd0 kernel/hung_task.c:289
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60