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 '10.128.10.25' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program syzkaller login: [ 30.152918] FAULT_INJECTION: forcing a failure. [ 30.152918] name failslab, interval 1, probability 0, space 0, times 1 [ 30.164289] CPU: 1 PID: 3567 Comm: syzkaller635002 Not tainted 4.16.0+ #83 [ 30.171330] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.180692] Call Trace: [ 30.183299] dump_stack+0x185/0x1d0 [ 30.186947] should_fail+0x87b/0xab0 [ 30.190672] ================================================================== [ 30.198031] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 30.204769] CPU: 1 PID: 3567 Comm: syzkaller635002 Not tainted 4.16.0+ #83 [ 30.211763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.221098] Call Trace: [ 30.223672] dump_stack+0x14a/0x1d0 [ 30.227286] ? kernel_text_address+0x248/0x3a0 [ 30.231851] kmsan_report+0x142/0x240 [ 30.235637] __msan_warning_32+0x6c/0xb0 [ 30.239683] kernel_text_address+0x248/0x3a0 [ 30.244080] __kernel_text_address+0x34/0xe0 [ 30.248478] show_trace_log_lvl+0x954/0x1030 [ 30.252872] ? should_failslab+0x279/0x2a0 [ 30.257097] show_stack+0xfc/0x150 [ 30.260624] ? print_worker_info+0x1b0/0x660 [ 30.265022] dump_stack+0x185/0x1d0 [ 30.268642] should_fail+0x87b/0xab0 [ 30.272343] should_failslab+0x279/0x2a0 [ 30.276390] kmem_cache_alloc+0x136/0xb90 [ 30.280526] ? jbd2__journal_start+0x274/0xc90 [ 30.285090] ? __msan_poison_alloca+0x15c/0x1d0 [ 30.289746] ? jbd2__journal_start+0xc8/0xc90 [ 30.294227] jbd2__journal_start+0x274/0xc90 [ 30.298620] ? rcu_all_qs+0x32/0x1f0 [ 30.302323] __ext4_journal_start_sb+0x493/0x6f0 [ 30.307066] ext4_alloc_file_blocks+0x5e4/0x1370 [ 30.311805] ? kmsan_set_origin_inline+0x6b/0x120 [ 30.316642] ext4_fallocate+0x132b/0x3790 [ 30.320777] ? __msan_poison_alloca+0x15c/0x1d0 [ 30.325431] ? _cond_resched+0x3c/0xd0 [ 30.329310] ? _cond_resched+0x3c/0xd0 [ 30.333189] ? ext4_ext_truncate+0x3b0/0x3b0 [ 30.337580] vfs_fallocate+0x9dc/0xde0 [ 30.341455] SYSC_fallocate+0x119/0x1d0 [ 30.345414] SyS_fallocate+0x64/0x90 [ 30.349113] do_syscall_64+0x309/0x430 [ 30.352985] ? vfs_fallocate+0xde0/0xde0 [ 30.357040] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 30.362214] RIP: 0033:0x4446e9 [ 30.365389] RSP: 002b:00007fff26ac2e98 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 30.373081] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004446e9 [ 30.380332] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000004 [ 30.387585] RBP: 00007fff26ac2ea0 R08: 0000000000000001 R09: 00007fff26ac0031 [ 30.394837] R10: 0000000040000004 R11: 0000000000000246 R12: 0030656c69662f2e [ 30.402092] R13: 0000000000000005 R14: ffffffffffffffff R15: 7363762f7665642f [ 30.409353] [ 30.410959] Local variable description: ----name@__fsnotify_parent [ 30.417251] Variable was created at: [ 30.420946] __fsnotify_parent+0x75/0x560 [ 30.425079] notify_change+0x1a34/0x1b00 [ 30.429117] ================================================================== [ 30.436451] Disabling lock debugging due to kernel taint [ 30.441881] Kernel panic - not syncing: panic_on_warn set ... [ 30.441881] [ 30.449228] CPU: 1 PID: 3567 Comm: syzkaller635002 Tainted: G B 4.16.0+ #83 [ 30.457524] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.466857] Call Trace: [ 30.469430] dump_stack+0x14a/0x1d0 [ 30.473045] panic+0x39d/0x940 [ 30.476243] ? kernel_text_address+0x248/0x3a0 [ 30.480809] kmsan_report+0x238/0x240 [ 30.484596] __msan_warning_32+0x6c/0xb0 [ 30.488644] kernel_text_address+0x248/0x3a0 [ 30.493043] __kernel_text_address+0x34/0xe0 [ 30.497441] show_trace_log_lvl+0x954/0x1030 [ 30.501833] ? should_failslab+0x279/0x2a0 [ 30.506061] show_stack+0xfc/0x150 [ 30.509584] ? print_worker_info+0x1b0/0x660 [ 30.513979] dump_stack+0x185/0x1d0 [ 30.517596] should_fail+0x87b/0xab0 [ 30.521299] should_failslab+0x279/0x2a0 [ 30.525346] kmem_cache_alloc+0x136/0xb90 [ 30.529479] ? jbd2__journal_start+0x274/0xc90 [ 30.534043] ? __msan_poison_alloca+0x15c/0x1d0 [ 30.538698] ? jbd2__journal_start+0xc8/0xc90 [ 30.543179] jbd2__journal_start+0x274/0xc90 [ 30.547573] ? rcu_all_qs+0x32/0x1f0 [ 30.551279] __ext4_journal_start_sb+0x493/0x6f0 [ 30.556029] ext4_alloc_file_blocks+0x5e4/0x1370 [ 30.560772] ? kmsan_set_origin_inline+0x6b/0x120 [ 30.565607] ext4_fallocate+0x132b/0x3790 [ 30.569738] ? __msan_poison_alloca+0x15c/0x1d0 [ 30.574390] ? _cond_resched+0x3c/0xd0 [ 30.578263] ? _cond_resched+0x3c/0xd0 [ 30.582137] ? ext4_ext_truncate+0x3b0/0x3b0 [ 30.586534] vfs_fallocate+0x9dc/0xde0 [ 30.590409] SYSC_fallocate+0x119/0x1d0 [ 30.594369] SyS_fallocate+0x64/0x90 [ 30.598070] do_syscall_64+0x309/0x430 [ 30.601942] ? vfs_fallocate+0xde0/0xde0 [ 30.605990] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 30.611171] RIP: 0033:0x4446e9 [ 30.614342] RSP: 002b:00007fff26ac2e98 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 30.622036] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004446e9 [ 30.629288] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000004 [ 30.636542] RBP: 00007fff26ac2ea0 R08: 0000000000000001 R09: 00007fff26ac0031 [ 30.643794] R10: 0000000040000004 R11: 0000000000000246 R12: 0030656c69662f2e [ 30.651047] R13: 0000000000000005 R14: ffffffffffffffff R15: 7363762f7665642f [ 30.658778] Dumping ftrace buffer: [ 30.662295] (ftrace buffer empty) [ 30.665977] Kernel Offset: disabled [ 30.669579] Rebooting in 86400 seconds..