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-executor745:4470 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-executor745 D22672 4470 4467 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_hash+0x12e/0x190 fs/namei.c:1546 filename_create+0x1e5/0x5b0 fs/namei.c:3636 user_path_create fs/namei.c:3693 [inline] do_mkdirat+0xda/0x310 fs/namei.c:3832 __do_sys_mkdirat fs/namei.c:3851 [inline] __se_sys_mkdirat fs/namei.c:3849 [inline] __x64_sys_mkdirat+0x76/0xb0 fs/namei.c:3849 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x445849 Code: e8 7c b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff243259da8 EFLAGS: 00000293 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445849 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 00000000ffffff9c RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0030656c69662f2e R13: 65646f6d746f6f72 R14: 2f30656c69662f2e R15: 0000000000000008 INFO: task syz-executor745:4471 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-executor745 D25408 4471 4467 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 __rwsem_down_write_failed_common+0x95d/0x1630 kernel/locking/rwsem-xadd.c:566 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write_nested+0xae/0x130 kernel/locking/rwsem.c:194 inode_lock_nested include/linux/fs.h:792 [inline] filename_create+0x1b2/0x5b0 fs/namei.c:3635 user_path_create fs/namei.c:3693 [inline] do_mkdirat+0xda/0x310 fs/namei.c:3832 __do_sys_mkdirat fs/namei.c:3851 [inline] __se_sys_mkdirat fs/namei.c:3849 [inline] __x64_sys_mkdirat+0x76/0xb0 fs/namei.c:3849 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x445849 Code: e8 7c b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff243238da8 EFLAGS: 00000293 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00000000006dac3c RCX: 0000000000445849 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 00000000ffffff9c RBP: 00000000006dac38 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0030656c69662f2e R13: 65646f6d746f6f72 R14: 2f30656c69662f2e R15: 0000000000000008 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 PID: 901 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