random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
INFO: task syz-executor027:4468 blocked for more than 140 seconds.
      Not tainted 4.18.0-rc5-next-20180720+ #12
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor027 D25504  4468   4464 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2821 [inline]
 __schedule+0x87c/0x1ea0 kernel/sched/core.c:3469
 schedule+0xfb/0x450 kernel/sched/core.c:3513
 request_wait_answer+0x4c8/0x920 fs/fuse/dev.c:463
 __fuse_request_send+0x12a/0x1d0 fs/fuse/dev.c:483
 fuse_request_send+0x62/0xa0 fs/fuse/dev.c:496
 fuse_simple_request+0x33d/0x730 fs/fuse/dev.c:554
 fuse_lookup_name+0x3ee/0x830 fs/fuse/dir.c:323
 fuse_lookup+0xff/0x4c0 fs/fuse/dir.c:361
 __lookup_slow+0x2b5/0x540 fs/namei.c:1671
 lookup_slow+0x57/0x80 fs/namei.c:1688
 walk_component+0x94a/0x2630 fs/namei.c:1810
 lookup_last fs/namei.c:2273 [inline]
 path_lookupat.isra.45+0x212/0xc00 fs/namei.c:2318
 filename_lookup+0x264/0x510 fs/namei.c:2348
 user_path_at_empty+0x40/0x50 fs/namei.c:2608
 user_path_at include/linux/namei.h:57 [inline]
 ksys_chroot+0xc0/0x2f0 fs/open.c:492
 __do_sys_chroot fs/open.c:521 [inline]
 __se_sys_chroot fs/open.c:519 [inline]
 __x64_sys_chroot+0x31/0x40 fs/open.c:519
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4457e9
Code: Bad RIP value.
RSP: 002b:00007efed0d37da8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a1
RAX: ffffffffffffffda RBX: 00000000006dac3c RCX: 00000000004457e9
RDX: 0000000000402534 RSI: 5d3eb8ca47b1110e RDI: 0000000020000040
RBP: 00000000006dac38 R08: 00007efed0d38700 R09: 0000000000000000
R10: 00007efed0d38700 R11: 0000000000000297 R12: 0030656c69662f2e
R13: 65646f6d746f6f72 R14: 2f30656c69662f2e R15: 0000000000000001
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 900 Comm: khungtaskd Not tainted 4.18.0-rc5-next-20180720+ #12
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
 nmi_cpu_backtrace.cold.3+0x48/0x88 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x151/0x192 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+0xb39/0x10b0 kernel/hung_task.c:265
 kthread+0x345/0x410 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54