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 '10.128.0.43' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 31.672771] FAULT_INJECTION: forcing a failure. [ 31.672771] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 31.679194] FAULT_INJECTION: forcing a failure. [ 31.679194] name failslab, interval 1, probability 0, space 0, times 1 [ 31.684619] CPU: 1 PID: 3575 Comm: syzkaller651348 Not tainted 4.16.0+ #84 [ 31.684625] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.684629] Call Trace: [ 31.684670] dump_stack+0x185/0x1d0 [ 31.718326] should_fail+0x87b/0xab0 [ 31.722035] __alloc_pages_nodemask+0x5fe/0x5dc0 [ 31.726773] ? kmsan_set_origin_inline+0x6b/0x120 [ 31.731600] ? __msan_poison_alloca+0x15c/0x1d0 [ 31.736257] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 31.741606] ? mntput_no_expire+0xad/0x17c0 [ 31.745920] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 31.751269] ? lockref_put_return+0x27c/0x2c0 [ 31.755757] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 31.762412] alloc_pages_current+0x6b5/0x970 [ 31.766810] depot_save_stack+0x3fe/0x4c0 [ 31.770943] ? kmsan_set_origin_inline+0x6b/0x120 [ 31.775770] __msan_poison_alloca+0x131/0x1d0 [ 31.780275] ? vfs_fallocate+0x9dc/0xde0 [ 31.784319] ? ext4_fallocate+0xb4/0x3790 [ 31.788451] ? vfs_fallocate+0x9dc/0xde0 [ 31.792496] ? kmsan_set_origin+0x9e/0x160 [ 31.796722] ? vfs_fallocate+0x9dc/0xde0 [ 31.800767] ? ext4_ext_truncate+0x3b0/0x3b0 [ 31.805158] ext4_fallocate+0xb4/0x3790 [ 31.809117] ? __msan_poison_alloca+0x15c/0x1d0 [ 31.813774] ? _cond_resched+0x3c/0xd0 [ 31.817645] ? rcu_all_qs+0x32/0x1f0 [ 31.821337] ? _cond_resched+0x3c/0xd0 [ 31.825214] ? __sb_start_write+0x109/0x2d0 [ 31.829521] ? ext4_ext_truncate+0x3b0/0x3b0 [ 31.833910] ? ext4_ext_truncate+0x3b0/0x3b0 [ 31.838301] vfs_fallocate+0x9dc/0xde0 [ 31.842178] SYSC_fallocate+0x119/0x1d0 [ 31.846139] SyS_fallocate+0x64/0x90 [ 31.849833] do_syscall_64+0x309/0x430 [ 31.853702] ? vfs_fallocate+0xde0/0xde0 [ 31.857750] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 31.862922] RIP: 0033:0x440959 [ 31.866110] RSP: 002b:00007ffde4172b38 EFLAGS: 00000246 ORIG_RAX: 000000000000011d executing program executing program executing program [ 31.873803] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440959 [ 31.881055] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000003 [ 31.888309] RBP: 00007ffde4172b40 R08: 0000000000000001 R09: 00007ffde4170031 [ 31.895560] R10: 0000000040000004 R11: 0000000000000246 R12: 0030656c69662f2e [ 31.902810] R13: ffffffffffffffff R14: 70756f7267632f2e R15: 0000000000000005 [ 31.910093] CPU: 0 PID: 3578 Comm: syzkaller651348 Not tainted 4.16.0+ #84 executing program executing program [ 31.917150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.926532] Call Trace: [ 31.929163] dump_stack+0x185/0x1d0 [ 31.932809] should_fail+0x87b/0xab0 [ 31.936534] ================================================================== [ 31.943898] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 31.950635] CPU: 0 PID: 3578 Comm: syzkaller651348 Not tainted 4.16.0+ #84 [ 31.957622] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.966954] Call Trace: [ 31.969521] dump_stack+0x14a/0x1d0 [ 31.973146] ? kernel_text_address+0x248/0x3a0 [ 31.977709] kmsan_report+0x142/0x240 [ 31.981488] __msan_warning_32+0x6c/0xb0 [ 31.985526] kernel_text_address+0x248/0x3a0 [ 31.989913] __kernel_text_address+0x34/0xe0 [ 31.994299] show_trace_log_lvl+0x954/0x1030 [ 31.998684] ? should_failslab+0x279/0x2a0 [ 32.002898] show_stack+0xfc/0x150 [ 32.006417] ? print_worker_info+0x1b0/0x660 [ 32.010802] dump_stack+0x185/0x1d0 [ 32.014409] should_fail+0x87b/0xab0 [ 32.018105] should_failslab+0x279/0x2a0 [ 32.022150] kmem_cache_alloc+0x136/0xb90 [ 32.026276] ? jbd2__journal_start+0x274/0xc90 [ 32.030835] ? __msan_poison_alloca+0x15c/0x1d0 [ 32.035484] ? jbd2__journal_start+0xc8/0xc90 [ 32.039963] jbd2__journal_start+0x274/0xc90 [ 32.044349] ? rcu_all_qs+0x32/0x1f0 [ 32.048054] __ext4_journal_start_sb+0x493/0x6f0 [ 32.052788] ext4_alloc_file_blocks+0x5e4/0x1370 [ 32.057521] ? kmsan_set_origin_inline+0x6b/0x120 [ 32.062345] ext4_fallocate+0x132b/0x3790 [ 32.066480] ? __msan_poison_alloca+0x15c/0x1d0 [ 32.071131] ? _cond_resched+0x3c/0xd0 [ 32.074994] ? _cond_resched+0x3c/0xd0 [ 32.078876] ? ext4_ext_truncate+0x3b0/0x3b0 [ 32.083263] vfs_fallocate+0x9dc/0xde0 [ 32.087134] SYSC_fallocate+0x119/0x1d0 [ 32.091087] SyS_fallocate+0x64/0x90 [ 32.094778] do_syscall_64+0x309/0x430 [ 32.098642] ? vfs_fallocate+0xde0/0xde0 [ 32.102686] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.107849] RIP: 0033:0x440959 [ 32.111019] RSP: 002b:00007ffde4172b38 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 32.118715] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440959 [ 32.125960] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000003 [ 32.133207] RBP: 00007ffde4172b40 R08: 0000000000000001 R09: 00007ffde4170031 [ 32.140452] R10: 0000000040000004 R11: 0000000000000246 R12: 0030656c69662f2e [ 32.147698] R13: ffffffffffffffff R14: 70756f7267632f2e R15: 0000000000000005 [ 32.154946] [ 32.156549] Local variable description: ----name@__fsnotify_parent [ 32.162837] Variable was created at: [ 32.166530] __fsnotify_parent+0x75/0x560 [ 32.170656] notify_change+0x1a34/0x1b00 [ 32.174693] ================================================================== [ 32.182027] Disabling lock debugging due to kernel taint [ 32.187458] Kernel panic - not syncing: panic_on_warn set ... [ 32.187458] [ 32.194800] CPU: 0 PID: 3578 Comm: syzkaller651348 Tainted: G B 4.16.0+ #84 [ 32.203088] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.212422] Call Trace: [ 32.214992] dump_stack+0x14a/0x1d0 [ 32.218621] panic+0x39d/0x940 [ 32.221823] ? kernel_text_address+0x248/0x3a0 [ 32.226388] kmsan_report+0x238/0x240 [ 32.230169] __msan_warning_32+0x6c/0xb0 [ 32.234213] kernel_text_address+0x248/0x3a0 [ 32.238599] __kernel_text_address+0x34/0xe0 [ 32.242987] show_trace_log_lvl+0x954/0x1030 [ 32.247380] ? should_failslab+0x279/0x2a0 [ 32.251596] show_stack+0xfc/0x150 [ 32.255118] ? print_worker_info+0x1b0/0x660 [ 32.259503] dump_stack+0x185/0x1d0 [ 32.263129] should_fail+0x87b/0xab0 [ 32.266822] should_failslab+0x279/0x2a0 [ 32.270861] kmem_cache_alloc+0x136/0xb90 [ 32.274987] ? jbd2__journal_start+0x274/0xc90 [ 32.279549] ? __msan_poison_alloca+0x15c/0x1d0 [ 32.284201] ? jbd2__journal_start+0xc8/0xc90 [ 32.288677] jbd2__journal_start+0x274/0xc90 [ 32.293074] ? rcu_all_qs+0x32/0x1f0 [ 32.296777] __ext4_journal_start_sb+0x493/0x6f0 [ 32.301512] ext4_alloc_file_blocks+0x5e4/0x1370 [ 32.306244] ? kmsan_set_origin_inline+0x6b/0x120 [ 32.311072] ext4_fallocate+0x132b/0x3790 [ 32.315198] ? __msan_poison_alloca+0x15c/0x1d0 [ 32.320103] ? _cond_resched+0x3c/0xd0 [ 32.323972] ? _cond_resched+0x3c/0xd0 [ 32.327841] ? ext4_ext_truncate+0x3b0/0x3b0 [ 32.332229] vfs_fallocate+0x9dc/0xde0 [ 32.336099] SYSC_fallocate+0x119/0x1d0 [ 32.340062] SyS_fallocate+0x64/0x90 [ 32.343755] do_syscall_64+0x309/0x430 [ 32.347619] ? vfs_fallocate+0xde0/0xde0 [ 32.351658] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.356823] RIP: 0033:0x440959 [ 32.359989] RSP: 002b:00007ffde4172b38 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 32.367684] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440959 [ 32.374930] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000003 [ 32.382186] RBP: 00007ffde4172b40 R08: 0000000000000001 R09: 00007ffde4170031 [ 32.389434] R10: 0000000040000004 R11: 0000000000000246 R12: 0030656c69662f2e [ 32.396686] R13: ffffffffffffffff R14: 70756f7267632f2e R15: 0000000000000005 [ 32.404442] Dumping ftrace buffer: [ 32.407975] (ftrace buffer empty) [ 32.411658] Kernel Offset: disabled [ 32.415260] Rebooting in 86400 seconds..