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 '10.128.10.6' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 31.830696] FAULT_INJECTION: forcing a failure. [ 31.830696] name failslab, interval 1, probability 0, space 0, times 1 [ 31.842100] CPU: 1 PID: 3582 Comm: syzkaller587833 Not tainted 4.16.0+ #83 [ 31.849148] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.858545] Call Trace: [ 31.860748] FAULT_INJECTION: forcing a failure. [ 31.860748] name failslab, interval 1, probability 0, space 0, times 1 [ 31.861175] dump_stack+0x185/0x1d0 [ 31.861232] should_fail+0x87b/0xab0 [ 31.879705] ================================================================== [ 31.887058] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 31.893796] CPU: 1 PID: 3582 Comm: syzkaller587833 Not tainted 4.16.0+ #83 [ 31.900790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.911426] Call Trace: [ 31.914002] dump_stack+0x14a/0x1d0 [ 31.917645] ? kernel_text_address+0x248/0x3a0 [ 31.922212] kmsan_report+0x142/0x240 [ 31.926014] __msan_warning_32+0x6c/0xb0 [ 31.930065] kernel_text_address+0x248/0x3a0 [ 31.934459] __kernel_text_address+0x34/0xe0 [ 31.938941] show_trace_log_lvl+0x954/0x1030 [ 31.943338] ? should_failslab+0x279/0x2a0 [ 31.947565] show_stack+0xfc/0x150 [ 31.951089] ? print_worker_info+0x1b0/0x660 [ 31.955482] dump_stack+0x185/0x1d0 [ 31.959107] should_fail+0x87b/0xab0 [ 31.962808] should_failslab+0x279/0x2a0 [ 31.966854] __kmalloc+0xc2/0x350 [ 31.970291] ? sctp_stream_init_ext+0x6a/0x200 [ 31.974854] sctp_stream_init_ext+0x6a/0x200 [ 31.979274] sctp_sendmsg+0x3747/0x6020 [ 31.983232] ? rw_copy_check_uvector+0x5af/0x6c0 [ 31.987987] ? sctp_getsockopt+0x145b0/0x145b0 [ 31.992554] inet_sendmsg+0x48d/0x740 [ 31.996338] ? security_socket_sendmsg+0x9e/0x210 [ 32.001204] ? inet_getname+0x500/0x500 [ 32.005195] ___sys_sendmsg+0xec0/0x1310 [ 32.009241] ? kstrtoull+0x766/0x7e0 [ 32.012945] ? __fdget+0x4e/0x60 [ 32.016293] ? __fget_light+0x56/0x710 [ 32.020164] ? __fdget+0x4e/0x60 [ 32.023513] ? __fget_light+0x1dc/0x710 [ 32.027473] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 32.032818] ? __fget_light+0x1f5/0x710 [ 32.036782] __sys_sendmmsg+0x42d/0x800 [ 32.040740] ? __msan_poison_alloca+0x15c/0x1d0 [ 32.045390] ? syscall_return_slowpath+0xe9/0x700 [ 32.050219] ? prepare_exit_to_usermode+0x4a/0x3a0 [ 32.055143] SYSC_sendmmsg+0xc4/0x110 [ 32.058932] SyS_sendmmsg+0x63/0x90 [ 32.062541] do_syscall_64+0x309/0x430 [ 32.066413] ? __sys_sendmmsg+0x800/0x800 [ 32.070547] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.075720] RIP: 0033:0x440ac9 [ 32.078892] RSP: 002b:00007ffe2dd6f878 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 32.086582] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ac9 [ 32.093856] RDX: 0000000000000002 RSI: 0000000020007c00 RDI: 0000000000000003 [ 32.101110] RBP: 00007ffe2dd6f880 R08: 0000000000000001 R09: 00007ffe2dd60031 [ 32.108362] R10: 0000000000000000 R11: 0000000000000246 R12: 0100000000000000 [ 32.115614] R13: ffffffffffffffff R14: 0000408000000001 R15: 0000000000000004 [ 32.122870] [ 32.124477] Local variable description: ----oc.i.i@__alloc_pages_nodemask [ 32.131378] Variable was created at: [ 32.135080] __alloc_pages_nodemask+0x10f/0x5dc0 [ 32.139817] alloc_pages_current+0x6b5/0x970 [ 32.144214] ================================================================== [ 32.151552] Disabling lock debugging due to kernel taint [ 32.156982] Kernel panic - not syncing: panic_on_warn set ... [ 32.156982] [ 32.164336] CPU: 1 PID: 3582 Comm: syzkaller587833 Tainted: G B 4.16.0+ #83 [ 32.172634] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.181966] Call Trace: [ 32.184542] dump_stack+0x14a/0x1d0 [ 32.188153] panic+0x39d/0x940 [ 32.191344] ? kernel_text_address+0x248/0x3a0 [ 32.195909] kmsan_report+0x238/0x240 [ 32.199696] __msan_warning_32+0x6c/0xb0 [ 32.203743] kernel_text_address+0x248/0x3a0 [ 32.208139] __kernel_text_address+0x34/0xe0 [ 32.212546] show_trace_log_lvl+0x954/0x1030 [ 32.216939] ? should_failslab+0x279/0x2a0 [ 32.221169] show_stack+0xfc/0x150 [ 32.224692] ? print_worker_info+0x1b0/0x660 [ 32.229095] dump_stack+0x185/0x1d0 [ 32.232709] should_fail+0x87b/0xab0 [ 32.236409] should_failslab+0x279/0x2a0 [ 32.240455] __kmalloc+0xc2/0x350 [ 32.243893] ? sctp_stream_init_ext+0x6a/0x200 [ 32.248459] sctp_stream_init_ext+0x6a/0x200 [ 32.252858] sctp_sendmsg+0x3747/0x6020 [ 32.256905] ? rw_copy_check_uvector+0x5af/0x6c0 [ 32.261664] ? sctp_getsockopt+0x145b0/0x145b0 [ 32.266231] inet_sendmsg+0x48d/0x740 [ 32.270103] ? security_socket_sendmsg+0x9e/0x210 [ 32.274932] ? inet_getname+0x500/0x500 [ 32.278900] ___sys_sendmsg+0xec0/0x1310 [ 32.282947] ? kstrtoull+0x766/0x7e0 [ 32.286648] ? __fdget+0x4e/0x60 [ 32.289996] ? __fget_light+0x56/0x710 [ 32.293955] ? __fdget+0x4e/0x60 [ 32.297302] ? __fget_light+0x1dc/0x710 [ 32.301263] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 32.306613] ? __fget_light+0x1f5/0x710 [ 32.310581] __sys_sendmmsg+0x42d/0x800 [ 32.314538] ? __msan_poison_alloca+0x15c/0x1d0 [ 32.319190] ? syscall_return_slowpath+0xe9/0x700 [ 32.324018] ? prepare_exit_to_usermode+0x4a/0x3a0 [ 32.328944] SYSC_sendmmsg+0xc4/0x110 [ 32.332729] SyS_sendmmsg+0x63/0x90 [ 32.336339] do_syscall_64+0x309/0x430 [ 32.340211] ? __sys_sendmmsg+0x800/0x800 [ 32.344348] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.349520] RIP: 0033:0x440ac9 [ 32.352689] RSP: 002b:00007ffe2dd6f878 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 32.360380] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ac9 [ 32.367629] RDX: 0000000000000002 RSI: 0000000020007c00 RDI: 0000000000000003 [ 32.374884] RBP: 00007ffe2dd6f880 R08: 0000000000000001 R09: 00007ffe2dd60031 [ 32.382139] R10: 0000000000000000 R11: 0000000000000246 R12: 0100000000000000 [ 32.389478] R13: ffffffffffffffff R14: 0000408000000001 R15: 0000000000000004 [ 32.397291] Dumping ftrace buffer: [ 32.400814] (ftrace buffer empty) [ 32.404497] Kernel Offset: disabled [ 32.408100] Rebooting in 86400 seconds..