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 '10.128.0.10' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.594705] FAULT_INJECTION: forcing a failure. [ 29.594705] name failslab, interval 1, probability 0, space 0, times 1 [ 29.605979] CPU: 1 PID: 3428 Comm: syzkaller404431 Not tainted 4.16.0+ #84 [ 29.612982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.622330] Call Trace: [ 29.624920] dump_stack+0x185/0x1d0 [ 29.628555] should_fail+0x87b/0xab0 [ 29.632253] ================================================================== [ 29.639596] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 29.646324] CPU: 1 PID: 3428 Comm: syzkaller404431 Not tainted 4.16.0+ #84 [ 29.653335] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.662665] Call Trace: [ 29.665231] dump_stack+0x14a/0x1d0 [ 29.668834] ? kernel_text_address+0x248/0x3a0 [ 29.673392] kmsan_report+0x142/0x240 [ 29.677171] __msan_warning_32+0x6c/0xb0 [ 29.681212] kernel_text_address+0x248/0x3a0 [ 29.685597] __kernel_text_address+0x34/0xe0 [ 29.689985] show_trace_log_lvl+0x954/0x1030 [ 29.694368] ? should_failslab+0x279/0x2a0 [ 29.698587] show_stack+0xfc/0x150 [ 29.702112] ? print_worker_info+0x1b0/0x660 [ 29.706499] dump_stack+0x185/0x1d0 [ 29.710105] should_fail+0x87b/0xab0 [ 29.713795] should_failslab+0x279/0x2a0 [ 29.717833] kmem_cache_alloc+0x136/0xb90 [ 29.721958] ? jbd2__journal_start+0x274/0xc90 [ 29.726514] ? __msan_poison_alloca+0x15c/0x1d0 [ 29.731159] ? jbd2__journal_start+0xc8/0xc90 [ 29.735631] jbd2__journal_start+0x274/0xc90 [ 29.740015] ? rcu_all_qs+0x32/0x1f0 [ 29.743710] __ext4_journal_start_sb+0x493/0x6f0 [ 29.748448] ext4_punch_hole+0xf94/0x1c70 [ 29.752574] ext4_fallocate+0x443/0x3790 [ 29.756611] ? __msan_poison_alloca+0x15c/0x1d0 [ 29.761256] ? _cond_resched+0x3c/0xd0 [ 29.765127] ? rcu_all_qs+0x32/0x1f0 [ 29.768815] ? _cond_resched+0x3c/0xd0 [ 29.772679] ? ext4_ext_truncate+0x3b0/0x3b0 [ 29.777077] vfs_fallocate+0x9dc/0xde0 [ 29.780956] SYSC_fallocate+0x119/0x1d0 [ 29.784908] SyS_fallocate+0x64/0x90 [ 29.788598] do_syscall_64+0x309/0x430 [ 29.792472] ? vfs_fallocate+0xde0/0xde0 [ 29.796523] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 29.801698] RIP: 0033:0x440479 [ 29.804861] RSP: 002b:00007fff3554eab8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 29.812543] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440479 [ 29.819787] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003 [ 29.827032] RBP: 00007fff3554eac0 R08: 0000000000000001 R09: 0000000000000031 [ 29.834279] R10: 000000000000ffff R11: 0000000000000246 R12: ffffffffffffffff [ 29.841526] R13: 0030656c69662f2e R14: 70756f7267632f2e R15: 0000000000000004 [ 29.848776] [ 29.850379] Local variable description: ----name@__fsnotify_parent [ 29.857269] Variable was created at: [ 29.860961] __fsnotify_parent+0x75/0x560 [ 29.865100] security_file_open+0x28f/0x3c0 [ 29.869403] ================================================================== [ 29.876736] Disabling lock debugging due to kernel taint [ 29.882161] Kernel panic - not syncing: panic_on_warn set ... [ 29.882161] [ 29.889506] CPU: 1 PID: 3428 Comm: syzkaller404431 Tainted: G B 4.16.0+ #84 [ 29.897796] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.907127] Call Trace: [ 29.909698] dump_stack+0x14a/0x1d0 [ 29.913303] panic+0x39d/0x940 [ 29.916486] ? kernel_text_address+0x248/0x3a0 [ 29.921053] kmsan_report+0x238/0x240 [ 29.924838] __msan_warning_32+0x6c/0xb0 [ 29.928878] kernel_text_address+0x248/0x3a0 [ 29.933264] __kernel_text_address+0x34/0xe0 [ 29.937650] show_trace_log_lvl+0x954/0x1030 [ 29.942036] ? should_failslab+0x279/0x2a0 [ 29.946261] show_stack+0xfc/0x150 [ 29.949778] ? print_worker_info+0x1b0/0x660 [ 29.954170] dump_stack+0x185/0x1d0 [ 29.957777] should_fail+0x87b/0xab0 [ 29.961468] should_failslab+0x279/0x2a0 [ 29.965507] kmem_cache_alloc+0x136/0xb90 [ 29.969634] ? jbd2__journal_start+0x274/0xc90 [ 29.974190] ? __msan_poison_alloca+0x15c/0x1d0 [ 29.978841] ? jbd2__journal_start+0xc8/0xc90 [ 29.983320] jbd2__journal_start+0x274/0xc90 [ 29.987715] ? rcu_all_qs+0x32/0x1f0 [ 29.991411] __ext4_journal_start_sb+0x493/0x6f0 [ 29.996147] ext4_punch_hole+0xf94/0x1c70 [ 30.000290] ext4_fallocate+0x443/0x3790 [ 30.004339] ? __msan_poison_alloca+0x15c/0x1d0 [ 30.008985] ? _cond_resched+0x3c/0xd0 [ 30.012853] ? rcu_all_qs+0x32/0x1f0 [ 30.016540] ? _cond_resched+0x3c/0xd0 [ 30.020416] ? ext4_ext_truncate+0x3b0/0x3b0 [ 30.024811] vfs_fallocate+0x9dc/0xde0 [ 30.028683] SYSC_fallocate+0x119/0x1d0 [ 30.032635] SyS_fallocate+0x64/0x90 [ 30.036327] do_syscall_64+0x309/0x430 [ 30.040194] ? vfs_fallocate+0xde0/0xde0 [ 30.044234] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 30.049406] RIP: 0033:0x440479 [ 30.052569] RSP: 002b:00007fff3554eab8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 30.060257] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440479 [ 30.067508] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003 [ 30.074754] RBP: 00007fff3554eac0 R08: 0000000000000001 R09: 0000000000000031 [ 30.082003] R10: 000000000000ffff R11: 0000000000000246 R12: ffffffffffffffff [ 30.089251] R13: 0030656c69662f2e R14: 70756f7267632f2e R15: 0000000000000004 [ 30.096994] Dumping ftrace buffer: [ 30.100516] (ftrace buffer empty) [ 30.104199] Kernel Offset: disabled [ 30.107801] Rebooting in 86400 seconds..