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 '10.128.0.9' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.487256] FAULT_INJECTION: forcing a failure. [ 30.487256] name failslab, interval 1, probability 0, space 0, times 1 [ 30.498642] CPU: 0 PID: 3567 Comm: syzkaller040277 Not tainted 4.16.0+ #82 [ 30.505695] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.515137] Call Trace: [ 30.517747] dump_stack+0x185/0x1d0 [ 30.521380] should_fail+0x87b/0xab0 [ 30.525103] ================================================================== [ 30.532464] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 30.539206] CPU: 0 PID: 3567 Comm: syzkaller040277 Not tainted 4.16.0+ #82 [ 30.546207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.555542] Call Trace: [ 30.558114] dump_stack+0x14a/0x1d0 [ 30.561726] ? kernel_text_address+0x248/0x3a0 [ 30.566300] kmsan_report+0x142/0x240 [ 30.570086] __msan_warning_32+0x6c/0xb0 [ 30.574134] kernel_text_address+0x248/0x3a0 [ 30.578524] __kernel_text_address+0x34/0xe0 [ 30.582921] show_trace_log_lvl+0x954/0x1030 [ 30.587311] ? should_failslab+0x279/0x2a0 [ 30.591544] show_stack+0xfc/0x150 [ 30.595068] ? print_worker_info+0x1b0/0x660 [ 30.599463] dump_stack+0x185/0x1d0 [ 30.603076] should_fail+0x87b/0xab0 [ 30.606782] should_failslab+0x279/0x2a0 [ 30.610829] __kmalloc+0xc2/0x350 [ 30.614262] ? kmsan_set_origin_inline+0x6b/0x120 [ 30.619097] ? alloc_pipe_info+0xb8/0x8c0 [ 30.623227] alloc_pipe_info+0xb8/0x8c0 [ 30.627192] ? splice_direct_to_actor+0x65/0x1040 [ 30.632014] ? do_splice_direct+0x335/0x540 [ 30.636319] ? splice_direct_to_actor+0xdb/0x1040 [ 30.641181] splice_direct_to_actor+0xe23/0x1040 [ 30.645923] ? do_splice_direct+0x540/0x540 [ 30.650223] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 30.655577] ? security_file_permission+0x28f/0x4b0 [ 30.660584] ? rw_verify_area+0x35e/0x580 [ 30.664725] do_splice_direct+0x335/0x540 [ 30.668862] do_sendfile+0x1067/0x1e40 [ 30.672741] SYSC_sendfile64+0x1b3/0x300 [ 30.676791] SyS_sendfile64+0x64/0x90 [ 30.680580] do_syscall_64+0x309/0x430 [ 30.684468] ? SYSC_sendfile+0x320/0x320 [ 30.688527] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 30.693709] RIP: 0033:0x4405d9 [ 30.696877] RSP: 002b:00007ffc33b4a508 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 30.704562] RAX: ffffffffffffffda RBX: 00007ffc33b4a510 RCX: 00000000004405d9 [ 30.711814] RDX: 000000002058f000 RSI: 0000000000000003 RDI: 0000000000000004 [ 30.719065] RBP: 0000000000000000 R08: 0000000000000001 R09: 65732f636f720031 [ 30.726315] R10: 0000000100000000 R11: 0000000000000246 R12: 0000000000000000 [ 30.733566] R13: ffffffffffffffff R14: 65725f7261656c63 R15: 0000000000000005 [ 30.740825] [ 30.742433] Local variable description: ----oc.i.i@__alloc_pages_nodemask [ 30.749341] Variable was created at: [ 30.753052] __alloc_pages_nodemask+0x10f/0x5dc0 [ 30.757809] alloc_pages_current+0x6b5/0x970 [ 30.762205] ================================================================== [ 30.769545] Disabling lock debugging due to kernel taint [ 30.774970] Kernel panic - not syncing: panic_on_warn set ... [ 30.774970] [ 30.782349] CPU: 0 PID: 3567 Comm: syzkaller040277 Tainted: G B 4.16.0+ #82 [ 30.790641] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.799995] Call Trace: [ 30.802578] dump_stack+0x14a/0x1d0 [ 30.806190] panic+0x39d/0x940 [ 30.809380] ? kernel_text_address+0x248/0x3a0 [ 30.813970] kmsan_report+0x238/0x240 [ 30.817754] __msan_warning_32+0x6c/0xb0 [ 30.821801] kernel_text_address+0x248/0x3a0 [ 30.826211] __kernel_text_address+0x34/0xe0 [ 30.830617] show_trace_log_lvl+0x954/0x1030 [ 30.835010] ? should_failslab+0x279/0x2a0 [ 30.839227] show_stack+0xfc/0x150 [ 30.842749] ? print_worker_info+0x1b0/0x660 [ 30.847142] dump_stack+0x185/0x1d0 [ 30.850761] should_fail+0x87b/0xab0 [ 30.854457] should_failslab+0x279/0x2a0 [ 30.858506] __kmalloc+0xc2/0x350 [ 30.861946] ? kmsan_set_origin_inline+0x6b/0x120 [ 30.866776] ? alloc_pipe_info+0xb8/0x8c0 [ 30.870906] alloc_pipe_info+0xb8/0x8c0 [ 30.874878] ? splice_direct_to_actor+0x65/0x1040 [ 30.879710] ? do_splice_direct+0x335/0x540 [ 30.884016] ? splice_direct_to_actor+0xdb/0x1040 [ 30.888846] splice_direct_to_actor+0xe23/0x1040 [ 30.893588] ? do_splice_direct+0x540/0x540 [ 30.897897] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 30.903250] ? security_file_permission+0x28f/0x4b0 [ 30.908250] ? rw_verify_area+0x35e/0x580 [ 30.912387] do_splice_direct+0x335/0x540 [ 30.917401] do_sendfile+0x1067/0x1e40 [ 30.921284] SYSC_sendfile64+0x1b3/0x300 [ 30.925327] SyS_sendfile64+0x64/0x90 [ 30.929116] do_syscall_64+0x309/0x430 [ 30.933002] ? SYSC_sendfile+0x320/0x320 [ 30.937074] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 30.942258] RIP: 0033:0x4405d9 [ 30.945452] RSP: 002b:00007ffc33b4a508 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 30.953146] RAX: ffffffffffffffda RBX: 00007ffc33b4a510 RCX: 00000000004405d9 [ 30.960410] RDX: 000000002058f000 RSI: 0000000000000003 RDI: 0000000000000004 [ 30.967677] RBP: 0000000000000000 R08: 0000000000000001 R09: 65732f636f720031 [ 30.974932] R10: 0000000100000000 R11: 0000000000000246 R12: 0000000000000000 [ 30.982190] R13: ffffffffffffffff R14: 65725f7261656c63 R15: 0000000000000005 [ 30.989924] Dumping ftrace buffer: [ 30.993449] (ftrace buffer empty) [ 30.997139] Kernel Offset: disabled [ 31.000754] Rebooting in 86400 seconds..