[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[ 35.239563] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
syzkaller login: [ 40.289440] random: sshd: uninitialized urandom read (32 bytes read)
[ 40.737927] random: sshd: uninitialized urandom read (32 bytes read)
[ 42.158989] random: sshd: uninitialized urandom read (32 bytes read)
[ 714.625988] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.31' (ECDSA) to the list of known hosts.
[ 720.101508] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[ 720.232494] IPVS: ftp: loaded support on port[0] = 21
[ 1004.512688] INFO: task syz-executor607:4564 blocked for more than 140 seconds.
[ 1004.520369] Not tainted 4.18.0-rc5+ #29
[ 1004.525134] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1004.533434] syz-executor607 D57920 4564 4561 0x00000004
[ 1004.539450] Call Trace:
[ 1004.542257] __schedule+0x652/0x780
[ 1004.546682] schedule+0x1cc/0x300
[ 1004.550278] __fuse_request_send+0x105a/0x1a90
[ 1004.555522] ? init_wait_entry+0x1a0/0x1a0
[ 1004.560455] fuse_simple_request+0x9cc/0xc10
[ 1004.565447] fuse_lookup_name+0x472/0xc80
[ 1004.569843] ? rcu_all_qs+0x3f/0x210
[ 1004.574283] fuse_lookup+0x193/0x810
[ 1004.578252] ? fuse_getattr+0x8a0/0x8a0
[ 1004.582508] __lookup_slow+0x59d/0x770
[ 1004.586618] walk_component+0x35c/0xbf0
[ 1004.590840] path_lookupat+0x3c4/0x1180
[ 1004.595056] ? __msan_poison_alloca+0x183/0x220
[ 1004.600014] ? user_path_at_empty+0x123/0x140
[ 1004.604750] filename_lookup+0x308/0xc00
[ 1004.609070] ? getname_flags+0x5da/0xaa0
[ 1004.613431] user_path_at_empty+0x123/0x140
[ 1004.618009] do_utimes+0x533/0x7c0
[ 1004.621781] __se_sys_utime+0x224/0x2a0
[ 1004.626187] __x64_sys_utime+0x92/0xc0
[ 1004.630486] ? __ia32_sys_sync_file_range2+0x170/0x170
[ 1004.635893] do_syscall_64+0x15b/0x230
[ 1004.639864] entry_SYSCALL_64_after_hwframe+0x63/0xe7
[ 1004.645164] RIP: 0033:0x445ee9
[ 1004.648505] Code: Bad RIP value.
[ 1004.651978] RSP: 002b:00007fbe3feebda8 EFLAGS: 00000246 ORIG_RAX: 0000000000000084
[ 1004.659791] RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000445ee9
[ 1004.667249] RDX: 0000000000445ee9 RSI: 00000000200001c0 RDI: 0000000020000080
[ 1004.674854] RBP: 00000000006dbc38 R08: 0000000000000000 R09: 0000000000000000
[ 1004.682218] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
[ 1004.689562] R13: 65646f6d746f6f72 R14: 2f30656c69662f2e R15: 0000000000002710
[ 1004.696967] NMI backtrace for cpu 0
[ 1004.700656] CPU: 0 PID: 808 Comm: khungtaskd Not tainted 4.18.0-rc5+ #29
[ 1004.707499] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1004.716962] Call Trace:
[ 1004.719607] dump_stack+0x185/0x1e0
[ 1004.723261] nmi_trigger_cpumask_backtrace+0x26f/0x4e0
[ 1004.728546] ? arch_trigger_cpumask_backtrace+0x40/0x40
[ 1004.733917] arch_trigger_cpumask_backtrace+0x2c/0x40
[ 1004.739140] trigger_all_cpu_backtrace+0x2b/0x30
[ 1004.743915] watchdog+0x1107/0x1130
[ 1004.747567] kthread+0x473/0x4b0
[ 1004.750957] ? reset_hung_task_detector+0x30/0x30
[ 1004.755805] ? kthread_blkcg+0xf0/0xf0
[ 1004.759713] ret_from_fork+0x35/0x40
[ 1004.764112] Sending NMI from CPU 0 to CPUs 1:
[ 1004.768761] ------------[ cut here ]------------
[ 1004.774971] kernel BUG at mm/kmsan/kmsan_entry.c:81!
[ 1004.780108] invalid opcode: 0000 [#1] SMP PTI
[ 1004.784615] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.18.0-rc5+ #29
[ 1004.791202] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1004.800612] RIP: 0010:kmsan_nmi_enter+0x42/0x70
[ 1004.805275] Code: 00 74 27 65 8b 04 25 80 90 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 80 90 03 00 65 c6 04 25 15 6e 0b 00 ff c3 0f 0b 90 eb fe <0f> 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 0f 0b 66 90 66 2e
[ 1004.824859] RSP: 0018:fffffe0000049ea8 EFLAGS: 00010046
[ 1004.830584] RAX: 0000000080000100 RBX: 0000000000000001 RCX: 00000000c0000101
[ 1004.837877] RDX: 00000000ffff8802 RSI: ffffffff8a40136c RDI: ffffffff8b9c0980
[ 1004.845170] RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000
[ 1004.852448] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 1004.859777] R13: 0000000000000000 R14: 000000018ed04000 R15: 0000000000000000
[ 1004.867074] FS: 0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
[ 1004.875561] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1004.881468] CR2: 0000000001c1de98 CR3: 000000018ed04000 CR4: 00000000001406e0
[ 1004.888852] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1004.896269] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1004.903575] Call Trace:
[ 1004.906187]
[ 1004.908370] ? end_repeat_nmi+0x19/0x8e
[ 1004.912358] ? end_repeat_nmi+0x7/0x8e
[ 1004.916276] ? task_change_group_fair+0xda0/0xda0
[ 1004.921133] ? stop_nmi+0x8/0x10
[ 1004.924509] ? stop_nmi+0x8/0x10
[ 1004.928150] ? stop_nmi+0x8/0x10
[ 1004.931610]
[ 1004.933842]
[ 1004.936049] ? task_kmsan_context_state+0x83/0x120
[ 1004.941019] ? __msan_get_context_state+0x9/0x30
[ 1004.945914] ? find_next_bit+0x20/0x2a0
[ 1004.949928] ? cpumask_next+0x7f/0x90
[ 1004.953781] ? _nohz_idle_balance+0x184/0xe80
[ 1004.958341] ? __msan_poison_alloca+0x183/0x220
[ 1004.963065] ? kmsan_set_origin_inline+0x6b/0x120
[ 1004.968067] ? __msan_poison_alloca+0x183/0x220
[ 1004.973727] ? run_rebalance_domains+0x40/0x350
[ 1004.978438] ? run_rebalance_domains+0x288/0x350
[ 1004.983246] ? task_change_group_fair+0xda0/0xda0
[ 1004.988154] ? __do_softirq+0x55f/0x934
[ 1004.992207] ? irq_exit+0x22a/0x270
[ 1004.995870] ? scheduler_ipi+0x25f/0x490
[ 1004.999976] ? flat_init_apic_ldr+0x170/0x170
[ 1005.004508] ? smp_reschedule_interrupt+0xc7/0x430
[ 1005.009474] ? reschedule_interrupt+0xf/0x20
[ 1005.013894]
[ 1005.016144] ? __cpuidle_text_start+0x8/0x8
[ 1005.020513] ? default_idle+0x210/0x3f0
[ 1005.024524] ? default_idle+0x78/0x3f0
[ 1005.028469] ? __cpuidle_text_start+0x8/0x8
[ 1005.032807] ? __cpuidle_text_start+0x8/0x8
[ 1005.037170] ? arch_cpu_idle+0x26/0x30
[ 1005.041083] ? do_idle+0x36c/0x830
[ 1005.044673] ? cpu_startup_entry+0x105/0x150
[ 1005.049103] ? setup_APIC_timer+0x220/0x220
[ 1005.053451] ? start_secondary+0x48b/0x5c0
[ 1005.057725] ? secondary_startup_64+0xa5/0xb0
[ 1005.062308] Modules linked in:
[ 1005.065522] Dumping ftrace buffer:
[ 1005.069078] (ftrace buffer empty)
[ 1005.072838] ---[ end trace 1ae94a28b9d642c8 ]---
[ 1005.077616] RIP: 0010:kmsan_nmi_enter+0x42/0x70
[ 1005.082277] Code: 00 74 27 65 8b 04 25 80 90 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 80 90 03 00 65 c6 04 25 15 6e 0b 00 ff c3 0f 0b 90 eb fe <0f> 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 0f 0b 66 90 66 2e
[ 1005.101785] RSP: 0018:fffffe0000049ea8 EFLAGS: 00010046
[ 1005.107341] RAX: 0000000080000100 RBX: 0000000000000001 RCX: 00000000c0000101
[ 1005.114880] RDX: 00000000ffff8802 RSI: ffffffff8a40136c RDI: ffffffff8b9c0980
[ 1005.122168] RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000
[ 1005.129463] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 1005.137279] R13: 0000000000000000 R14: 000000018ed04000 R15: 0000000000000000
[ 1005.144755] FS: 0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
[ 1005.153027] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1005.158940] CR2: 0000000001c1de98 CR3: 000000018ed04000 CR4: 00000000001406e0
[ 1005.166235] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1005.173534] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1005.180819] Kernel panic - not syncing: Fatal exception in interrupt
[ 1005.188087] Dumping ftrace buffer:
[ 1005.191634] (ftrace buffer empty)
[ 1005.195360] Kernel Offset: disabled
[ 1005.199015] Rebooting in 86400 seconds..