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 '10.128.0.27' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.741897] FAULT_INJECTION: forcing a failure. [ 32.741897] name failslab, interval 1, probability 0, space 0, times 1 [ 32.753200] CPU: 0 PID: 3581 Comm: syzkaller928729 Not tainted 4.16.0+ #83 [ 32.760219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.769562] Call Trace: [ 32.772172] dump_stack+0x185/0x1d0 [ 32.775799] should_fail+0x87b/0xab0 [ 32.779497] ================================================================== [ 32.786850] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 32.793583] CPU: 0 PID: 3581 Comm: syzkaller928729 Not tainted 4.16.0+ #83 [ 32.800565] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.809903] Call Trace: [ 32.812470] dump_stack+0x14a/0x1d0 [ 32.816074] ? kernel_text_address+0x248/0x3a0 [ 32.820635] kmsan_report+0x142/0x240 [ 32.824413] __msan_warning_32+0x6c/0xb0 [ 32.828452] kernel_text_address+0x248/0x3a0 [ 32.832840] __kernel_text_address+0x34/0xe0 [ 32.837224] show_trace_log_lvl+0x954/0x1030 [ 32.841613] ? should_failslab+0x279/0x2a0 [ 32.845825] show_stack+0xfc/0x150 [ 32.849341] ? print_worker_info+0x1b0/0x660 [ 32.853724] dump_stack+0x185/0x1d0 [ 32.857327] should_fail+0x87b/0xab0 [ 32.861027] should_failslab+0x279/0x2a0 [ 32.865083] __kmalloc+0xc2/0x350 [ 32.868520] ? __msan_metadata_ptr_for_store_8+0x13/0x20 [ 32.873944] ? sock_kmalloc+0x14e/0x270 [ 32.877894] sock_kmalloc+0x14e/0x270 [ 32.881670] hash_sendmsg+0xb09/0x1110 [ 32.885537] ? copy_msghdr_from_user+0x72c/0x830 [ 32.890269] ? hash_accept+0x880/0x880 [ 32.894138] ___sys_sendmsg+0xec0/0x1310 [ 32.898176] ? kstrtoull+0x766/0x7e0 [ 32.901873] ? __fdget+0x4e/0x60 [ 32.905213] ? __fget_light+0x56/0x710 [ 32.909083] ? __fdget+0x4e/0x60 [ 32.912432] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 32.917769] ? __fget_light+0x6b9/0x710 [ 32.921723] __sys_sendmmsg+0x42d/0x800 [ 32.925671] ? __msan_poison_alloca+0x15c/0x1d0 [ 32.930317] ? syscall_return_slowpath+0xe9/0x700 [ 32.935133] ? prepare_exit_to_usermode+0x4a/0x3a0 [ 32.940043] SYSC_sendmmsg+0xc4/0x110 [ 32.943829] SyS_sendmmsg+0x63/0x90 [ 32.947440] do_syscall_64+0x309/0x430 [ 32.951307] ? __sys_sendmmsg+0x800/0x800 [ 32.955430] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.960593] RIP: 0033:0x445a19 [ 32.963765] RSP: 002b:00007ffb5dbafd78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 32.971450] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 0000000000445a19 [ 32.978695] RDX: 0000000000000001 RSI: 00000000200013c0 RDI: 0000000000000004 [ 32.985937] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000031 [ 32.993185] R10: 0000000000044000 R11: 0000000000000246 R12: 0000000000000000 [ 33.000430] R13: 00000000006dbc20 R14: 00007ffb5dbafd80 R15: 0000000000000005 [ 33.007680] [ 33.009282] Local variable description: ----success.i.i.i@should_fail [ 33.015830] Variable was created at: [ 33.019527] should_fail+0x57/0xab0 [ 33.023127] should_failslab+0x279/0x2a0 [ 33.027156] ================================================================== [ 33.034487] Disabling lock debugging due to kernel taint [ 33.039908] Kernel panic - not syncing: panic_on_warn set ... [ 33.039908] [ 33.047245] CPU: 0 PID: 3581 Comm: syzkaller928729 Tainted: G B 4.16.0+ #83 [ 33.055532] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.064859] Call Trace: [ 33.067425] dump_stack+0x14a/0x1d0 [ 33.071028] panic+0x39d/0x940 [ 33.074209] ? kernel_text_address+0x248/0x3a0 [ 33.078765] kmsan_report+0x238/0x240 [ 33.082541] __msan_warning_32+0x6c/0xb0 [ 33.086586] kernel_text_address+0x248/0x3a0 [ 33.090972] __kernel_text_address+0x34/0xe0 [ 33.095357] show_trace_log_lvl+0x954/0x1030 [ 33.099743] ? should_failslab+0x279/0x2a0 [ 33.103956] show_stack+0xfc/0x150 [ 33.107473] ? print_worker_info+0x1b0/0x660 [ 33.111865] dump_stack+0x185/0x1d0 [ 33.115468] should_fail+0x87b/0xab0 [ 33.119164] should_failslab+0x279/0x2a0 [ 33.123203] __kmalloc+0xc2/0x350 [ 33.126632] ? __msan_metadata_ptr_for_store_8+0x13/0x20 [ 33.132055] ? sock_kmalloc+0x14e/0x270 [ 33.136005] sock_kmalloc+0x14e/0x270 [ 33.139784] hash_sendmsg+0xb09/0x1110 [ 33.143646] ? copy_msghdr_from_user+0x72c/0x830 [ 33.148378] ? hash_accept+0x880/0x880 [ 33.152245] ___sys_sendmsg+0xec0/0x1310 [ 33.156283] ? kstrtoull+0x766/0x7e0 [ 33.160107] ? __fdget+0x4e/0x60 [ 33.163449] ? __fget_light+0x56/0x710 [ 33.167307] ? __fdget+0x4e/0x60 [ 33.170651] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 33.175990] ? __fget_light+0x6b9/0x710 [ 33.179944] __sys_sendmmsg+0x42d/0x800 [ 33.183895] ? __msan_poison_alloca+0x15c/0x1d0 [ 33.188540] ? syscall_return_slowpath+0xe9/0x700 [ 33.193358] ? prepare_exit_to_usermode+0x4a/0x3a0 [ 33.198267] SYSC_sendmmsg+0xc4/0x110 [ 33.202042] SyS_sendmmsg+0x63/0x90 [ 33.205646] do_syscall_64+0x309/0x430 [ 33.209512] ? __sys_sendmmsg+0x800/0x800 [ 33.213637] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 33.218801] RIP: 0033:0x445a19 [ 33.221964] RSP: 002b:00007ffb5dbafd78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 33.229644] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 0000000000445a19 [ 33.236888] RDX: 0000000000000001 RSI: 00000000200013c0 RDI: 0000000000000004 [ 33.244130] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000031 [ 33.251380] R10: 0000000000044000 R11: 0000000000000246 R12: 0000000000000000 [ 33.258630] R13: 00000000006dbc20 R14: 00007ffb5dbafd80 R15: 0000000000000005 [ 33.266332] Dumping ftrace buffer: [ 33.269850] (ftrace buffer empty) [ 33.273532] Kernel Offset: disabled [ 33.277130] Rebooting in 86400 seconds..