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 '10.128.0.12' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 46.248950] FAULT_INJECTION: forcing a failure. [ 46.248950] name fail_futex, interval 1, probability 0, space 0, times 1 [ 46.260504] CPU: 1 PID: 3582 Comm: syzkaller071955 Not tainted 4.16.0+ #83 [ 46.267525] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.276879] Call Trace: [ 46.279480] dump_stack+0x185/0x1d0 [ 46.283108] should_fail+0x87b/0xab0 [ 46.286829] ================================================================== [ 46.294174] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 46.300904] CPU: 1 PID: 3582 Comm: syzkaller071955 Not tainted 4.16.0+ #83 [ 46.307985] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.317329] Call Trace: [ 46.319901] dump_stack+0x14a/0x1d0 [ 46.323511] ? kernel_text_address+0x248/0x3a0 [ 46.328072] kmsan_report+0x142/0x240 [ 46.331853] __msan_warning_32+0x6c/0xb0 [ 46.335891] kernel_text_address+0x248/0x3a0 [ 46.340276] ? get_futex_key+0x355/0x1d00 [ 46.344400] ? get_futex_key+0x355/0x1d00 [ 46.348529] __kernel_text_address+0x34/0xe0 [ 46.352913] ? get_futex_key+0x355/0x1d00 [ 46.357038] show_trace_log_lvl+0x954/0x1030 [ 46.361511] ? get_futex_key+0x355/0x1d00 [ 46.365645] ? get_futex_key+0x355/0x1d00 [ 46.369779] show_stack+0xfc/0x150 [ 46.373297] ? print_worker_info+0x1b0/0x660 [ 46.377692] dump_stack+0x185/0x1d0 [ 46.381301] should_fail+0x87b/0xab0 [ 46.385084] get_futex_key+0x355/0x1d00 [ 46.389040] futex_wake+0x189/0xba0 [ 46.392657] ? SYSC_futex+0x3e1/0x810 [ 46.396445] do_futex+0x28d1/0x6ad0 [ 46.400070] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 46.405431] ? __fget_light+0x6eb/0x710 [ 46.409397] ? __fdget+0x4e/0x60 [ 46.412744] ? kmsan_set_origin_inline+0x6b/0x120 [ 46.417669] ? __msan_poison_alloca+0x15c/0x1d0 [ 46.422317] ? SyS_futex+0x89/0xb0 [ 46.425840] ? SYSC_futex+0xde/0x810 [ 46.429533] ? SyS_futex+0x89/0xb0 [ 46.433058] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 46.439636] SYSC_futex+0x3e1/0x810 [ 46.443243] ? syscall_return_slowpath+0xe9/0x700 [ 46.448069] SyS_futex+0x89/0xb0 [ 46.451416] do_syscall_64+0x309/0x430 [ 46.455291] ? futex_lock_pi+0x1e60/0x1e60 [ 46.459515] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 46.464681] RIP: 0033:0x4459f9 [ 46.467848] RSP: 002b:00007fa9cec30d78 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 46.476171] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 00000000004459f9 [ 46.483426] RDX: 00000000004459f9 RSI: 0000000000000001 RDI: 00000000006dbc24 [ 46.490674] RBP: 0000000000000000 R08: 0000000000000031 R09: 0000000000000031 [ 46.497923] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [ 46.505187] R13: 00007fa9cec30d80 R14: 00000000006dbc20 R15: 0000000000000004 [ 46.512437] [ 46.514040] Local variable description: ----flags.i.i.i@rcu_all_qs [ 46.520506] Variable was created at: [ 46.524201] rcu_all_qs+0x32/0x1f0 [ 46.527749] _cond_resched+0x3c/0xd0 [ 46.531446] ================================================================== [ 46.538781] Disabling lock debugging due to kernel taint [ 46.544226] Kernel panic - not syncing: panic_on_warn set ... [ 46.544226] [ 46.551669] CPU: 1 PID: 3582 Comm: syzkaller071955 Tainted: G B 4.16.0+ #83 [ 46.559970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.569301] Call Trace: [ 46.571877] dump_stack+0x14a/0x1d0 [ 46.575486] panic+0x39d/0x940 [ 46.578669] ? kernel_text_address+0x248/0x3a0 [ 46.583235] kmsan_report+0x238/0x240 [ 46.587012] __msan_warning_32+0x6c/0xb0 [ 46.591146] kernel_text_address+0x248/0x3a0 [ 46.595542] ? get_futex_key+0x355/0x1d00 [ 46.599668] ? get_futex_key+0x355/0x1d00 [ 46.603813] __kernel_text_address+0x34/0xe0 [ 46.608201] ? get_futex_key+0x355/0x1d00 [ 46.612329] show_trace_log_lvl+0x954/0x1030 [ 46.616719] ? get_futex_key+0x355/0x1d00 [ 46.620849] ? get_futex_key+0x355/0x1d00 [ 46.624976] show_stack+0xfc/0x150 [ 46.628689] ? print_worker_info+0x1b0/0x660 [ 46.633076] dump_stack+0x185/0x1d0 [ 46.636683] should_fail+0x87b/0xab0 [ 46.640465] get_futex_key+0x355/0x1d00 [ 46.644422] futex_wake+0x189/0xba0 [ 46.648031] ? SYSC_futex+0x3e1/0x810 [ 46.651812] do_futex+0x28d1/0x6ad0 [ 46.655421] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 46.660767] ? __fget_light+0x6eb/0x710 [ 46.664731] ? __fdget+0x4e/0x60 [ 46.668077] ? kmsan_set_origin_inline+0x6b/0x120 [ 46.672899] ? __msan_poison_alloca+0x15c/0x1d0 [ 46.677568] ? SyS_futex+0x89/0xb0 [ 46.681088] ? SYSC_futex+0xde/0x810 [ 46.684820] ? SyS_futex+0x89/0xb0 [ 46.688382] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 46.693827] SYSC_futex+0x3e1/0x810 [ 46.697435] ? syscall_return_slowpath+0xe9/0x700 [ 46.702258] SyS_futex+0x89/0xb0 [ 46.705601] do_syscall_64+0x309/0x430 [ 46.709468] ? futex_lock_pi+0x1e60/0x1e60 [ 46.713689] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 46.718866] RIP: 0033:0x4459f9 [ 46.722033] RSP: 002b:00007fa9cec30d78 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 46.729738] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 00000000004459f9 [ 46.736999] RDX: 00000000004459f9 RSI: 0000000000000001 RDI: 00000000006dbc24 [ 46.744251] RBP: 0000000000000000 R08: 0000000000000031 R09: 0000000000000031 [ 46.751502] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 [ 46.758835] R13: 00007fa9cec30d80 R14: 00000000006dbc20 R15: 0000000000000004 [ 46.766598] Dumping ftrace buffer: [ 46.770120] (ftrace buffer empty) [ 46.773818] Kernel Offset: disabled [ 46.777425] Rebooting in 86400 seconds..