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 '10.128.10.21' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.275744] FAULT_INJECTION: forcing a failure. [ 32.275744] name failslab, interval 1, probability 0, space 0, times 1 [ 32.287074] CPU: 1 PID: 3577 Comm: syzkaller801407 Not tainted 4.16.0+ #83 [ 32.294086] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.303440] Call Trace: [ 32.306045] dump_stack+0x185/0x1d0 [ 32.309698] should_fail+0x87b/0xab0 [ 32.313417] ================================================================== [ 32.320765] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 32.327502] CPU: 1 PID: 3577 Comm: syzkaller801407 Not tainted 4.16.0+ #83 [ 32.334497] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.343830] Call Trace: [ 32.346406] dump_stack+0x14a/0x1d0 [ 32.350018] ? kernel_text_address+0x248/0x3a0 [ 32.354578] kmsan_report+0x142/0x240 [ 32.358362] __msan_warning_32+0x6c/0xb0 [ 32.362412] kernel_text_address+0x248/0x3a0 [ 32.366804] __kernel_text_address+0x34/0xe0 [ 32.371194] show_trace_log_lvl+0x954/0x1030 [ 32.375582] ? should_failslab+0x279/0x2a0 [ 32.379803] show_stack+0xfc/0x150 [ 32.383323] ? print_worker_info+0x1b0/0x660 [ 32.387710] dump_stack+0x185/0x1d0 [ 32.391321] should_fail+0x87b/0xab0 [ 32.395022] should_failslab+0x279/0x2a0 [ 32.399066] __kmalloc+0xc2/0x350 [ 32.402498] ? kmsan_set_origin_inline+0x6b/0x120 [ 32.407321] ? alloc_pipe_info+0xb8/0x8c0 [ 32.411451] alloc_pipe_info+0xb8/0x8c0 [ 32.415410] ? splice_direct_to_actor+0x65/0x1040 [ 32.420235] ? do_splice_direct+0x335/0x540 [ 32.424569] ? splice_direct_to_actor+0xdb/0x1040 [ 32.429395] splice_direct_to_actor+0xe23/0x1040 [ 32.434133] ? do_splice_direct+0x540/0x540 [ 32.438442] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 32.443790] ? security_file_permission+0x28f/0x4b0 [ 32.448792] ? rw_verify_area+0x35e/0x580 [ 32.452923] do_splice_direct+0x335/0x540 [ 32.457069] do_sendfile+0x1067/0x1e40 [ 32.460966] SYSC_sendfile64+0x1b3/0x300 [ 32.465023] SyS_sendfile64+0x64/0x90 [ 32.468820] do_syscall_64+0x309/0x430 [ 32.472690] ? SYSC_sendfile+0x320/0x320 [ 32.476737] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.482681] RIP: 0033:0x440459 [ 32.485852] RSP: 002b:00007ffea22a8518 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 32.493540] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440459 [ 32.500791] RDX: 0000000020d83ff8 RSI: 0000000000000005 RDI: 0000000000000004 [ 32.508047] RBP: 00007ffea22a8520 R08: 0000000000000001 R09: 00007ffea22a0031 [ 32.515308] R10: 00008000fffffffe R11: 0000000000000246 R12: ffffffffffffffff [ 32.522561] R13: 00008000fffffffe R14: 0000000000000006 R15: 0000000000000000 [ 32.529822] [ 32.531430] Local variable description: ----oc.i.i@__alloc_pages_nodemask [ 32.538337] Variable was created at: [ 32.542039] __alloc_pages_nodemask+0x10f/0x5dc0 [ 32.546779] alloc_pages_current+0x6b5/0x970 [ 32.551160] ================================================================== [ 32.558496] Disabling lock debugging due to kernel taint [ 32.563931] Kernel panic - not syncing: panic_on_warn set ... [ 32.563931] [ 32.571277] CPU: 1 PID: 3577 Comm: syzkaller801407 Tainted: G B 4.16.0+ #83 [ 32.579571] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.588905] Call Trace: [ 32.591481] dump_stack+0x14a/0x1d0 [ 32.595094] panic+0x39d/0x940 [ 32.598279] ? kernel_text_address+0x248/0x3a0 [ 32.602840] kmsan_report+0x238/0x240 [ 32.606638] __msan_warning_32+0x6c/0xb0 [ 32.610689] kernel_text_address+0x248/0x3a0 [ 32.615078] __kernel_text_address+0x34/0xe0 [ 32.619476] show_trace_log_lvl+0x954/0x1030 [ 32.623870] ? should_failslab+0x279/0x2a0 [ 32.628091] show_stack+0xfc/0x150 [ 32.631614] ? print_worker_info+0x1b0/0x660 [ 32.636015] dump_stack+0x185/0x1d0 [ 32.639633] should_fail+0x87b/0xab0 [ 32.643348] should_failslab+0x279/0x2a0 [ 32.647412] __kmalloc+0xc2/0x350 [ 32.650852] ? kmsan_set_origin_inline+0x6b/0x120 [ 32.655680] ? alloc_pipe_info+0xb8/0x8c0 [ 32.659813] alloc_pipe_info+0xb8/0x8c0 [ 32.663779] ? splice_direct_to_actor+0x65/0x1040 [ 32.668603] ? do_splice_direct+0x335/0x540 [ 32.672908] ? splice_direct_to_actor+0xdb/0x1040 [ 32.677735] splice_direct_to_actor+0xe23/0x1040 [ 32.682479] ? do_splice_direct+0x540/0x540 [ 32.686792] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 32.692142] ? security_file_permission+0x28f/0x4b0 [ 32.697154] ? rw_verify_area+0x35e/0x580 [ 32.701288] do_splice_direct+0x335/0x540 [ 32.705421] do_sendfile+0x1067/0x1e40 [ 32.709296] SYSC_sendfile64+0x1b3/0x300 [ 32.713340] SyS_sendfile64+0x64/0x90 [ 32.717128] do_syscall_64+0x309/0x430 [ 32.721015] ? SYSC_sendfile+0x320/0x320 [ 32.725079] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.730263] RIP: 0033:0x440459 [ 32.733430] RSP: 002b:00007ffea22a8518 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 32.741123] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440459 [ 32.748388] RDX: 0000000020d83ff8 RSI: 0000000000000005 RDI: 0000000000000004 [ 32.755642] RBP: 00007ffea22a8520 R08: 0000000000000001 R09: 00007ffea22a0031 [ 32.762901] R10: 00008000fffffffe R11: 0000000000000246 R12: ffffffffffffffff [ 32.770154] R13: 00008000fffffffe R14: 0000000000000006 R15: 0000000000000000 [ 32.777885] Dumping ftrace buffer: [ 32.781409] (ftrace buffer empty) [ 32.785094] Kernel Offset: disabled [ 32.788698] Rebooting in 86400 seconds..