INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.58' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 37.065626] capability: warning: `syzkaller647270' uses 32-bit capabilities (legacy support in use) [ 37.075685] FAULT_INJECTION: forcing a failure. [ 37.075685] name failslab, interval 1, probability 0, space 0, times 1 [ 37.086965] CPU: 1 PID: 3585 Comm: syzkaller647270 Not tainted 4.16.0+ #82 [ 37.093971] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.103313] Call Trace: [ 37.105908] dump_stack+0x185/0x1d0 [ 37.109537] should_fail+0x87b/0xab0 [ 37.113239] ================================================================== [ 37.120577] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 37.127306] CPU: 1 PID: 3585 Comm: syzkaller647270 Not tainted 4.16.0+ #82 [ 37.134286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.143609] Call Trace: [ 37.146170] dump_stack+0x14a/0x1d0 [ 37.149772] ? kernel_text_address+0x248/0x3a0 [ 37.154325] kmsan_report+0x142/0x240 [ 37.158101] __msan_warning_32+0x6c/0xb0 [ 37.162134] kernel_text_address+0x248/0x3a0 [ 37.166514] __kernel_text_address+0x34/0xe0 [ 37.170897] show_trace_log_lvl+0x954/0x1030 [ 37.175276] ? should_failslab+0x279/0x2a0 [ 37.179490] show_stack+0xfc/0x150 [ 37.183002] ? print_worker_info+0x1b0/0x660 [ 37.187383] dump_stack+0x185/0x1d0 [ 37.190998] should_fail+0x87b/0xab0 [ 37.194685] should_failslab+0x279/0x2a0 [ 37.198721] kmem_cache_alloc+0x136/0xb90 [ 37.202841] ? prepare_creds+0x65/0x5e0 [ 37.206789] ? make_kgid+0x57/0x450 [ 37.210393] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 37.215736] prepare_creds+0x65/0x5e0 [ 37.219510] SYSC_setresgid+0x2eb/0xbf0 [ 37.223456] SyS_setresgid+0x53/0x80 [ 37.227143] do_syscall_64+0x309/0x430 [ 37.231003] ? SYSC_getresuid+0x3b0/0x3b0 [ 37.235126] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 37.240287] RIP: 0033:0x4458a9 [ 37.243449] RSP: 002b:00007f4df5732d78 EFLAGS: 00000246 ORIG_RAX: 0000000000000077 [ 37.251128] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 00000000004458a9 [ 37.258372] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 37.265613] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000031 [ 37.272855] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 37.280095] R13: 00007f4df5732d80 R14: 00000000006dac20 R15: 0000000000000003 [ 37.287346] [ 37.288947] Local variable description: ----key1.i@do_futex [ 37.294624] Variable was created at: [ 37.298323] do_futex+0x341/0x6ad0 [ 37.301842] SYSC_futex+0x3e1/0x810 [ 37.305434] ================================================================== [ 37.312770] Disabling lock debugging due to kernel taint [ 37.318192] Kernel panic - not syncing: panic_on_warn set ... [ 37.318192] [ 37.325533] CPU: 1 PID: 3585 Comm: syzkaller647270 Tainted: G B 4.16.0+ #82 [ 37.333834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.343265] Call Trace: [ 37.345842] dump_stack+0x14a/0x1d0 [ 37.349454] panic+0x39d/0x940 [ 37.352634] ? kernel_text_address+0x248/0x3a0 [ 37.357191] kmsan_report+0x238/0x240 [ 37.361193] __msan_warning_32+0x6c/0xb0 [ 37.365228] kernel_text_address+0x248/0x3a0 [ 37.369609] __kernel_text_address+0x34/0xe0 [ 37.373995] show_trace_log_lvl+0x954/0x1030 [ 37.378376] ? should_failslab+0x279/0x2a0 [ 37.382589] show_stack+0xfc/0x150 [ 37.386105] ? print_worker_info+0x1b0/0x660 [ 37.390486] dump_stack+0x185/0x1d0 [ 37.394089] should_fail+0x87b/0xab0 [ 37.397777] should_failslab+0x279/0x2a0 [ 37.401812] kmem_cache_alloc+0x136/0xb90 [ 37.405936] ? prepare_creds+0x65/0x5e0 [ 37.409887] ? make_kgid+0x57/0x450 [ 37.413501] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 37.418838] prepare_creds+0x65/0x5e0 [ 37.422614] SYSC_setresgid+0x2eb/0xbf0 [ 37.426562] SyS_setresgid+0x53/0x80 [ 37.430246] do_syscall_64+0x309/0x430 [ 37.434110] ? SYSC_getresuid+0x3b0/0x3b0 [ 37.438232] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 37.443393] RIP: 0033:0x4458a9 [ 37.446553] RSP: 002b:00007f4df5732d78 EFLAGS: 00000246 ORIG_RAX: 0000000000000077 [ 37.454233] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 00000000004458a9 [ 37.461481] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 37.468725] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000031 [ 37.475966] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 37.483210] R13: 00007f4df5732d80 R14: 00000000006dac20 R15: 0000000000000003 [ 37.490833] Dumping ftrace buffer: [ 37.494356] (ftrace buffer empty) [ 37.498044] Kernel Offset: disabled [ 37.501649] Rebooting in 86400 seconds..