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 '10.128.0.43' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.401434] FAULT_INJECTION: forcing a failure. [ 30.401434] name fail_futex, interval 1, probability 0, space 0, times 1 [ 30.412958] CPU: 1 PID: 3557 Comm: syzkaller475785 Not tainted 4.16.0+ #82 [ 30.419995] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.429371] Call Trace: [ 30.431998] dump_stack+0x185/0x1d0 [ 30.435663] should_fail+0x87b/0xab0 [ 30.439398] ================================================================== [ 30.446761] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 30.453510] CPU: 1 PID: 3557 Comm: syzkaller475785 Not tainted 4.16.0+ #82 [ 30.460513] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.469849] Call Trace: [ 30.472414] dump_stack+0x14a/0x1d0 [ 30.476029] ? kernel_text_address+0x248/0x3a0 [ 30.480594] kmsan_report+0x142/0x240 [ 30.484371] __msan_warning_32+0x6c/0xb0 [ 30.488409] kernel_text_address+0x248/0x3a0 [ 30.492792] ? get_futex_key+0x355/0x1d00 [ 30.496914] ? get_futex_key+0x355/0x1d00 [ 30.501043] __kernel_text_address+0x34/0xe0 [ 30.505432] ? get_futex_key+0x355/0x1d00 [ 30.509557] show_trace_log_lvl+0x954/0x1030 [ 30.513940] ? get_futex_key+0x355/0x1d00 [ 30.518069] ? get_futex_key+0x355/0x1d00 [ 30.522194] show_stack+0xfc/0x150 [ 30.525707] ? print_worker_info+0x1b0/0x660 [ 30.530088] dump_stack+0x185/0x1d0 [ 30.533693] should_fail+0x87b/0xab0 [ 30.537384] get_futex_key+0x355/0x1d00 [ 30.541338] futex_wake+0x189/0xba0 [ 30.544944] ? SYSC_futex+0x3e1/0x810 [ 30.548720] do_futex+0x28d1/0x6ad0 [ 30.552325] ? __msan_poison_alloca+0x15c/0x1d0 [ 30.556970] ? kmsan_set_origin_inline+0x6b/0x120 [ 30.561786] ? __msan_poison_alloca+0x15c/0x1d0 [ 30.566428] ? SyS_futex+0x89/0xb0 [ 30.569944] ? SYSC_futex+0xde/0x810 [ 30.573631] ? SyS_futex+0x89/0xb0 [ 30.577146] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 30.582570] SYSC_futex+0x3e1/0x810 [ 30.586174] ? syscall_return_slowpath+0xe9/0x700 [ 30.590991] ? SYSC_setsockopt+0x517/0x570 [ 30.595206] SyS_futex+0x89/0xb0 [ 30.598545] do_syscall_64+0x309/0x430 [ 30.602408] ? futex_lock_pi+0x1e60/0x1e60 [ 30.606622] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 30.611786] RIP: 0033:0x445989 [ 30.614949] RSP: 002b:00007f0ac290fd78 EFLAGS: 00000202 ORIG_RAX: 00000000000000ca [ 30.622629] RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000445989 [ 30.629872] RDX: 0000000000445989 RSI: 0000000000000001 RDI: 00000000006dbc3c [ 30.637115] RBP: 0000000000000000 R08: 0000000000000031 R09: 0000000000000031 [ 30.644359] R10: 0000000000000010 R11: 0000000000000202 R12: 0000000000000000 [ 30.651603] R13: 00000000006dbc38 R14: 00007f0ac290fd80 R15: 0000000000000004 [ 30.658847] [ 30.660447] Local variable description: ----flags.i.i.i@rcu_all_qs [ 30.666731] Variable was created at: [ 30.670422] rcu_all_qs+0x32/0x1f0 [ 30.673936] _cond_resched+0x3c/0xd0 [ 30.677618] ================================================================== [ 30.684944] Disabling lock debugging due to kernel taint [ 30.690363] Kernel panic - not syncing: panic_on_warn set ... [ 30.690363] [ 30.697699] CPU: 1 PID: 3557 Comm: syzkaller475785 Tainted: G B 4.16.0+ #82 [ 30.705982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.715306] Call Trace: [ 30.717873] dump_stack+0x14a/0x1d0 [ 30.721476] panic+0x39d/0x940 [ 30.724651] ? kernel_text_address+0x248/0x3a0 [ 30.729207] kmsan_report+0x238/0x240 [ 30.732983] __msan_warning_32+0x6c/0xb0 [ 30.737029] kernel_text_address+0x248/0x3a0 [ 30.741421] ? get_futex_key+0x355/0x1d00 [ 30.745545] ? get_futex_key+0x355/0x1d00 [ 30.749669] __kernel_text_address+0x34/0xe0 [ 30.754062] ? get_futex_key+0x355/0x1d00 [ 30.758189] show_trace_log_lvl+0x954/0x1030 [ 30.762572] ? get_futex_key+0x355/0x1d00 [ 30.766695] ? get_futex_key+0x355/0x1d00 [ 30.770823] show_stack+0xfc/0x150 [ 30.774338] ? print_worker_info+0x1b0/0x660 [ 30.778718] dump_stack+0x185/0x1d0 [ 30.782323] should_fail+0x87b/0xab0 [ 30.786025] get_futex_key+0x355/0x1d00 [ 30.789986] futex_wake+0x189/0xba0 [ 30.793592] ? SYSC_futex+0x3e1/0x810 [ 30.797367] do_futex+0x28d1/0x6ad0 [ 30.800975] ? __msan_poison_alloca+0x15c/0x1d0 [ 30.805619] ? kmsan_set_origin_inline+0x6b/0x120 [ 30.810434] ? __msan_poison_alloca+0x15c/0x1d0 [ 30.815075] ? SyS_futex+0x89/0xb0 [ 30.818591] ? SYSC_futex+0xde/0x810 [ 30.822277] ? SyS_futex+0x89/0xb0 [ 30.825795] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 30.831218] SYSC_futex+0x3e1/0x810 [ 30.834819] ? syscall_return_slowpath+0xe9/0x700 [ 30.839637] ? SYSC_setsockopt+0x517/0x570 [ 30.843848] SyS_futex+0x89/0xb0 [ 30.847187] do_syscall_64+0x309/0x430 [ 30.851056] ? futex_lock_pi+0x1e60/0x1e60 [ 30.855268] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 30.860434] RIP: 0033:0x445989 [ 30.863598] RSP: 002b:00007f0ac290fd78 EFLAGS: 00000202 ORIG_RAX: 00000000000000ca [ 30.871282] RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000445989 [ 30.878525] RDX: 0000000000445989 RSI: 0000000000000001 RDI: 00000000006dbc3c [ 30.885771] RBP: 0000000000000000 R08: 0000000000000031 R09: 0000000000000031 [ 30.893024] R10: 0000000000000010 R11: 0000000000000202 R12: 0000000000000000 [ 30.900279] R13: 00000000006dbc38 R14: 00007f0ac290fd80 R15: 0000000000000004 [ 30.908120] Dumping ftrace buffer: [ 30.911639] (ftrace buffer empty) [ 30.915323] Kernel Offset: disabled [ 30.918923] Rebooting in 86400 seconds..