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 '10.128.0.8' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 32.165503] FAULT_INJECTION: forcing a failure. [ 32.165503] name failslab, interval 1, probability 0, space 0, times 1 [ 32.176855] CPU: 0 PID: 3582 Comm: syzkaller268474 Not tainted 4.16.0+ #83 [ 32.183898] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.191653] FAULT_INJECTION: forcing a failure. [ 32.191653] name failslab, interval 1, probability 0, space 0, times 1 [ 32.193271] Call Trace: [ 32.193314] dump_stack+0x185/0x1d0 [ 32.193364] should_fail+0x87b/0xab0 [ 32.214425] ================================================================== [ 32.221773] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 32.228511] CPU: 0 PID: 3582 Comm: syzkaller268474 Not tainted 4.16.0+ #83 [ 32.235503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.244840] Call Trace: [ 32.247414] dump_stack+0x14a/0x1d0 [ 32.251035] ? kernel_text_address+0x248/0x3a0 [ 32.255602] kmsan_report+0x142/0x240 [ 32.259387] __msan_warning_32+0x6c/0xb0 [ 32.263436] kernel_text_address+0x248/0x3a0 [ 32.267833] __kernel_text_address+0x34/0xe0 [ 32.272228] show_trace_log_lvl+0x954/0x1030 [ 32.276624] ? should_failslab+0x279/0x2a0 [ 32.280854] show_stack+0xfc/0x150 [ 32.284378] ? print_worker_info+0x1b0/0x660 [ 32.288776] dump_stack+0x185/0x1d0 [ 32.292403] should_fail+0x87b/0xab0 [ 32.296105] should_failslab+0x279/0x2a0 [ 32.300152] __kmalloc+0xc2/0x350 [ 32.303590] ? kmsan_set_origin_inline+0x6b/0x120 [ 32.308419] ? rw_copy_check_uvector+0x1a8/0x6c0 [ 32.313162] rw_copy_check_uvector+0x1a8/0x6c0 [ 32.317727] ? __msan_poison_alloca+0x15c/0x1d0 [ 32.322384] ? import_iovec+0xbf/0x610 [ 32.326257] import_iovec+0x18f/0x610 [ 32.330048] do_readv+0x21c/0x5f0 [ 32.333489] ? prepare_exit_to_usermode+0x149/0x3a0 [ 32.338490] ? syscall_return_slowpath+0xe9/0x700 [ 32.343404] ? __msan_metadata_ptr_for_store_8+0x13/0x20 [ 32.348840] SYSC_readv+0x9b/0xb0 [ 32.352281] SyS_readv+0x56/0x80 [ 32.355634] do_syscall_64+0x309/0x430 [ 32.359512] ? vfs_readv+0x260/0x260 [ 32.363225] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.368406] RIP: 0033:0x4408e9 [ 32.371578] RSP: 002b:00007ffc1bb93d08 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 [ 32.379269] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004408e9 [ 32.386521] RDX: 00000000000001d3 RSI: 0000000020dc8ff8 RDI: 0000000000000003 [ 32.393777] RBP: 00007ffc1bb93d10 R08: 0000000000000001 R09: 65732f636f720031 [ 32.401036] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 32.408288] R13: 0000000000000000 R14: 0000000000000004 R15: 0000000000000000 [ 32.415541] [ 32.417150] Local variable description: ----fl.i@locks_remove_file [ 32.424143] Variable was created at: [ 32.427847] locks_remove_file+0x65/0x1d70 [ 32.432064] __fput+0x3c4/0xa10 [ 32.435319] ================================================================== [ 32.442661] Disabling lock debugging due to kernel taint [ 32.448089] Kernel panic - not syncing: panic_on_warn set ... [ 32.448089] [ 32.455440] CPU: 0 PID: 3582 Comm: syzkaller268474 Tainted: G B 4.16.0+ #83 [ 32.463734] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.473071] Call Trace: [ 32.475654] dump_stack+0x14a/0x1d0 [ 32.479356] panic+0x39d/0x940 [ 32.482553] ? kernel_text_address+0x248/0x3a0 [ 32.487122] kmsan_report+0x238/0x240 [ 32.490911] __msan_warning_32+0x6c/0xb0 [ 32.494962] kernel_text_address+0x248/0x3a0 [ 32.499361] __kernel_text_address+0x34/0xe0 [ 32.503755] show_trace_log_lvl+0x954/0x1030 [ 32.508153] ? should_failslab+0x279/0x2a0 [ 32.512380] show_stack+0xfc/0x150 [ 32.515907] ? print_worker_info+0x1b0/0x660 [ 32.520303] dump_stack+0x185/0x1d0 [ 32.523916] should_fail+0x87b/0xab0 [ 32.527620] should_failslab+0x279/0x2a0 [ 32.531682] __kmalloc+0xc2/0x350 [ 32.535120] ? kmsan_set_origin_inline+0x6b/0x120 [ 32.539950] ? rw_copy_check_uvector+0x1a8/0x6c0 [ 32.544691] rw_copy_check_uvector+0x1a8/0x6c0 [ 32.549258] ? __msan_poison_alloca+0x15c/0x1d0 [ 32.553912] ? import_iovec+0xbf/0x610 [ 32.557783] import_iovec+0x18f/0x610 [ 32.561575] do_readv+0x21c/0x5f0 [ 32.565019] ? prepare_exit_to_usermode+0x149/0x3a0 [ 32.570029] ? syscall_return_slowpath+0xe9/0x700 [ 32.574861] ? __msan_metadata_ptr_for_store_8+0x13/0x20 [ 32.580296] SYSC_readv+0x9b/0xb0 [ 32.583736] SyS_readv+0x56/0x80 [ 32.587087] do_syscall_64+0x309/0x430 [ 32.590964] ? vfs_readv+0x260/0x260 [ 32.594670] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.599853] RIP: 0033:0x4408e9 [ 32.603031] RSP: 002b:00007ffc1bb93d08 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 [ 32.610723] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004408e9 [ 32.617974] RDX: 00000000000001d3 RSI: 0000000020dc8ff8 RDI: 0000000000000003 [ 32.625228] RBP: 00007ffc1bb93d10 R08: 0000000000000001 R09: 65732f636f720031 [ 32.632483] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 32.639734] R13: 0000000000000000 R14: 0000000000000004 R15: 0000000000000000 [ 32.647492] Dumping ftrace buffer: [ 32.651016] (ftrace buffer empty) [ 32.654699] Kernel Offset: disabled [ 32.658300] Rebooting in 86400 seconds..