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 '10.128.10.7' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.191758] FAULT_INJECTION: forcing a failure. [ 30.191758] name fail_futex, interval 1, probability 0, space 0, times 1 [ 30.203332] CPU: 1 PID: 3583 Comm: syzkaller893136 Not tainted 4.16.0+ #82 [ 30.210359] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.219710] Call Trace: [ 30.222306] dump_stack+0x185/0x1d0 [ 30.225934] should_fail+0x87b/0xab0 [ 30.229641] ================================================================== [ 30.236984] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 30.243719] CPU: 1 PID: 3583 Comm: syzkaller893136 Not tainted 4.16.0+ #82 [ 30.250708] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.260045] Call Trace: [ 30.262615] dump_stack+0x14a/0x1d0 [ 30.266225] ? kernel_text_address+0x248/0x3a0 [ 30.270786] kmsan_report+0x142/0x240 [ 30.274564] __msan_warning_32+0x6c/0xb0 [ 30.278612] kernel_text_address+0x248/0x3a0 [ 30.283016] ? get_futex_key+0x355/0x1d00 [ 30.287162] ? get_futex_key+0x355/0x1d00 [ 30.291294] __kernel_text_address+0x34/0xe0 [ 30.295683] ? get_futex_key+0x355/0x1d00 [ 30.299812] show_trace_log_lvl+0x954/0x1030 [ 30.304207] ? get_futex_key+0x355/0x1d00 [ 30.308339] ? get_futex_key+0x355/0x1d00 [ 30.312474] show_stack+0xfc/0x150 [ 30.315994] ? print_worker_info+0x1b0/0x660 [ 30.320383] dump_stack+0x185/0x1d0 [ 30.324000] should_fail+0x87b/0xab0 [ 30.327704] get_futex_key+0x355/0x1d00 [ 30.331665] futex_wake+0x189/0xba0 [ 30.335274] ? SYSC_futex+0x3e1/0x810 [ 30.339060] do_futex+0x28d1/0x6ad0 [ 30.342676] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 30.348024] ? kmsan_set_origin_inline+0x6b/0x120 [ 30.352851] ? kmsan_set_origin_inline+0x6b/0x120 [ 30.357671] ? __msan_poison_alloca+0x15c/0x1d0 [ 30.362321] ? SyS_futex+0x89/0xb0 [ 30.365844] ? SYSC_futex+0xde/0x810 [ 30.369531] ? SyS_futex+0x89/0xb0 [ 30.373050] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 30.378480] SYSC_futex+0x3e1/0x810 [ 30.382088] ? syscall_return_slowpath+0xe9/0x700 [ 30.386913] SyS_futex+0x89/0xb0 [ 30.390257] do_syscall_64+0x309/0x430 [ 30.394123] ? futex_lock_pi+0x1e60/0x1e60 [ 30.398333] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 30.403495] RIP: 0033:0x445969 [ 30.406659] RSP: 002b:00007f71d22c6d78 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 30.414352] RAX: ffffffffffffffda RBX: 00000000006dbc44 RCX: 0000000000445969 [ 30.421596] RDX: 0000000000445969 RSI: 0000000000000001 RDI: 00000000006dbc44 [ 30.428850] RBP: 00000000006dbc40 R08: 0000000000000031 R09: 0000000000000031 [ 30.436111] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [ 30.443358] R13: 00007f71d22c6d80 R14: ffffffffffffffff R15: 0000000000000004 [ 30.450608] [ 30.452210] Local variable description: ----flags.i.i.i@rcu_all_qs [ 30.458497] Variable was created at: [ 30.462211] rcu_all_qs+0x32/0x1f0 [ 30.465732] _cond_resched+0x3c/0xd0 [ 30.469424] ================================================================== [ 30.476761] Disabling lock debugging due to kernel taint [ 30.482198] Kernel panic - not syncing: panic_on_warn set ... [ 30.482198] [ 30.489540] CPU: 1 PID: 3583 Comm: syzkaller893136 Tainted: G B 4.16.0+ #82 [ 30.497831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.507165] Call Trace: [ 30.509767] dump_stack+0x14a/0x1d0 [ 30.513388] panic+0x39d/0x940 [ 30.516577] ? kernel_text_address+0x248/0x3a0 [ 30.521140] kmsan_report+0x238/0x240 [ 30.524928] __msan_warning_32+0x6c/0xb0 [ 30.528965] kernel_text_address+0x248/0x3a0 [ 30.533349] ? get_futex_key+0x355/0x1d00 [ 30.537475] ? get_futex_key+0x355/0x1d00 [ 30.541598] __kernel_text_address+0x34/0xe0 [ 30.545986] ? get_futex_key+0x355/0x1d00 [ 30.550122] show_trace_log_lvl+0x954/0x1030 [ 30.554512] ? get_futex_key+0x355/0x1d00 [ 30.558643] ? get_futex_key+0x355/0x1d00 [ 30.562957] show_stack+0xfc/0x150 [ 30.566486] ? print_worker_info+0x1b0/0x660 [ 30.570886] dump_stack+0x185/0x1d0 [ 30.574505] should_fail+0x87b/0xab0 [ 30.578205] get_futex_key+0x355/0x1d00 [ 30.582162] futex_wake+0x189/0xba0 [ 30.585783] ? SYSC_futex+0x3e1/0x810 [ 30.589562] do_futex+0x28d1/0x6ad0 [ 30.593174] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 30.598516] ? kmsan_set_origin_inline+0x6b/0x120 [ 30.603332] ? kmsan_set_origin_inline+0x6b/0x120 [ 30.608150] ? __msan_poison_alloca+0x15c/0x1d0 [ 30.612812] ? SyS_futex+0x89/0xb0 [ 30.616335] ? SYSC_futex+0xde/0x810 [ 30.620032] ? SyS_futex+0x89/0xb0 [ 30.623551] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 30.628988] SYSC_futex+0x3e1/0x810 [ 30.633061] ? syscall_return_slowpath+0xe9/0x700 [ 30.637892] SyS_futex+0x89/0xb0 [ 30.641234] do_syscall_64+0x309/0x430 [ 30.645095] ? futex_lock_pi+0x1e60/0x1e60 [ 30.649308] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 30.654471] RIP: 0033:0x445969 [ 30.657634] RSP: 002b:00007f71d22c6d78 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 30.665316] RAX: ffffffffffffffda RBX: 00000000006dbc44 RCX: 0000000000445969 [ 30.672565] RDX: 0000000000445969 RSI: 0000000000000001 RDI: 00000000006dbc44 [ 30.679812] RBP: 00000000006dbc40 R08: 0000000000000031 R09: 0000000000000031 [ 30.687056] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [ 30.694299] R13: 00007f71d22c6d80 R14: ffffffffffffffff R15: 0000000000000004 [ 30.702012] Dumping ftrace buffer: [ 30.705524] (ftrace buffer empty) [ 30.709208] Kernel Offset: disabled [ 30.712823] Rebooting in 86400 seconds..