INFO: task syz-executor.1:26601 blocked for more than 143 seconds.
      Not tainted 5.3.0-rc2+ #59
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D26984 26601   9662 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x8b6/0xcd0 kernel/sched/core.c:3880
 schedule+0x131/0x1e0 kernel/sched/core.c:3944
 rwsem_down_write_slowpath+0x8cf/0xe80 kernel/locking/rwsem.c:1214
 __down_write kernel/locking/rwsem.c:1365 [inline]
 down_write+0x176/0x180 kernel/locking/rwsem.c:1501
 inode_lock include/linux/fs.h:778 [inline]
 do_last fs/namei.c:3319 [inline]
 path_openat+0xac0/0x4440 fs/namei.c:3533
 do_filp_open+0x1f7/0x430 fs/namei.c:3563
 do_sys_open+0x343/0x620 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: 0033:0x459829
Code: 24 60 48 8b 42 08 48 8b 4a 10 48 8b 5a 18 48 8b 72 20 48 8b 7a 28 48 8b 3f 4c 8b 42 30 48 8b 52 38 48 85 d2 76 62 48 89 44 24 <58> 4c 89 44 24 28 48 89 0c 24 48 89 5c 24 08 48 c7 44 24 10 00 00
RSP: 002b:00007fd006abdc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
RDX: 0000000000000000 RSI: 00000000000000c0 RDI: 0000000020000100
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd006abe6d4
R13: 00000000004f8e3f R14: 00000000004dab30 R15: 00000000ffffffff
INFO: task syz-executor.1:26602 blocked for more than 143 seconds.
      Not tainted 5.3.0-rc2+ #59
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D26952 26602   9662 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x8b6/0xcd0 kernel/sched/core.c:3880
 schedule+0x131/0x1e0 kernel/sched/core.c:3944
 rwsem_down_write_slowpath+0x8cf/0xe80 kernel/locking/rwsem.c:1214
 __down_write kernel/locking/rwsem.c:1365 [inline]
 down_write+0x176/0x180 kernel/locking/rwsem.c:1501
 inode_lock include/linux/fs.h:778 [inline]
 lock_mount+0x70/0x2e0 fs/namespace.c:2131
 do_add_mount+0x28/0x4c0 fs/namespace.c:2677
 do_new_mount_fc fs/namespace.c:2738 [inline]
 do_new_mount fs/namespace.c:2793 [inline]
 do_mount+0x2300/0x26f0 fs/namespace.c:3111
 ksys_mount+0xcc/0x100 fs/namespace.c:3320
 __do_sys_mount fs/namespace.c:3334 [inline]
 __se_sys_mount fs/namespace.c:3331 [inline]
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3331
 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: 24 60 48 8b 42 08 48 8b 4a 10 48 8b 5a 18 48 8b 72 20 48 8b 7a 28 48 8b 3f 4c 8b 42 30 48 8b 52 38 48 85 d2 76 62 48 89 44 24 <58> 4c 89 44 24 28 48 89 0c 24 48 89 5c 24 08 48 c7 44 24 10 00 00
RSP: 002b:00007fd006a9cc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459829
RDX: 00000000200001c0 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 000000000075c070 R08: 0000000020000280 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd006a9d6d4
R13: 00000000004c5dcf R14: 00000000004da7d0 R15: 00000000ffffffff
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc2+ #59
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