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 '10.128.0.23' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.008304] FAULT_INJECTION: forcing a failure. [ 33.008304] name failslab, interval 1, probability 0, space 0, times 1 [ 33.019583] CPU: 0 PID: 3574 Comm: syzkaller409792 Not tainted 4.16.0+ #83 [ 33.026590] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.035934] Call Trace: [ 33.038535] dump_stack+0x185/0x1d0 [ 33.042178] should_fail+0x87b/0xab0 [ 33.045873] ================================================================== [ 33.053227] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 [ 33.059963] CPU: 0 PID: 3574 Comm: syzkaller409792 Not tainted 4.16.0+ #83 [ 33.066952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.076282] Call Trace: [ 33.078858] dump_stack+0x14a/0x1d0 [ 33.082464] ? kernel_text_address+0x248/0x3a0 [ 33.087023] kmsan_report+0x142/0x240 [ 33.090800] __msan_warning_32+0x6c/0xb0 [ 33.094838] kernel_text_address+0x248/0x3a0 [ 33.099224] __kernel_text_address+0x34/0xe0 [ 33.103611] show_trace_log_lvl+0x954/0x1030 [ 33.107997] ? should_failslab+0x279/0x2a0 [ 33.112213] show_stack+0xfc/0x150 [ 33.115731] ? print_worker_info+0x1b0/0x660 [ 33.120117] dump_stack+0x185/0x1d0 [ 33.123721] should_fail+0x87b/0xab0 [ 33.127419] should_failslab+0x279/0x2a0 [ 33.131457] __kmalloc+0xc2/0x350 [ 33.134888] ? ip_rt_ioctl+0x157b/0x1da0 [ 33.138925] ? ip_rt_ioctl+0x14cc/0x1da0 [ 33.142961] ip_rt_ioctl+0x157b/0x1da0 [ 33.146830] inet_ioctl+0x6c8/0x820 [ 33.150436] ? sock_ioctl+0x4da/0xbf0 [ 33.154215] ? inet_shutdown+0x640/0x640 [ 33.158250] sock_do_ioctl+0x13b/0x6b0 [ 33.162126] ? do_vfs_ioctl+0xaf0/0x2440 [ 33.166171] sock_ioctl+0x4da/0xbf0 [ 33.169773] ? SYSC_ioctl+0x1d2/0x260 [ 33.173548] ? sock_poll+0x370/0x370 [ 33.177237] do_vfs_ioctl+0xaf0/0x2440 [ 33.181101] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 33.186441] ? __fget_light+0x6b9/0x710 [ 33.190390] ? prepare_exit_to_usermode+0x149/0x3a0 [ 33.195385] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 33.200724] SYSC_ioctl+0x1d2/0x260 [ 33.204327] SyS_ioctl+0x54/0x80 [ 33.207669] do_syscall_64+0x309/0x430 [ 33.211533] ? ioctl_file_clone+0x4f0/0x4f0 [ 33.215832] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 33.221011] RIP: 0033:0x446319 [ 33.224176] RSP: 002b:00007f5ad3ea9ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 33.231858] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000446319 [ 33.239104] RDX: 0000000020000100 RSI: 000000000000890b RDI: 0000000000000003 [ 33.246355] RBP: 00000000006dbc20 R08: 0000000000000001 R09: 0000000000000031 [ 33.253599] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 33.260844] R13: ffffffffffffffff R14: 00007f5ad3eaa9c0 R15: 0000000000000001 [ 33.268089] [ 33.269689] Local variable description: ----rf@__schedule [ 33.275193] Variable was created at: [ 33.278888] __schedule+0x39/0x730 [ 33.282402] schedule+0x1cc/0x2f0 [ 33.285822] ================================================================== [ 33.293152] Disabling lock debugging due to kernel taint [ 33.298574] Kernel panic - not syncing: panic_on_warn set ... [ 33.298574] [ 33.305912] CPU: 0 PID: 3574 Comm: syzkaller409792 Tainted: G B 4.16.0+ #83 [ 33.314196] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.323521] Call Trace: [ 33.326102] dump_stack+0x14a/0x1d0 [ 33.329713] panic+0x39d/0x940 [ 33.332897] ? kernel_text_address+0x248/0x3a0 [ 33.337455] kmsan_report+0x238/0x240 [ 33.341235] __msan_warning_32+0x6c/0xb0 [ 33.345272] kernel_text_address+0x248/0x3a0 [ 33.349658] __kernel_text_address+0x34/0xe0 [ 33.354058] show_trace_log_lvl+0x954/0x1030 [ 33.358451] ? should_failslab+0x279/0x2a0 [ 33.362673] show_stack+0xfc/0x150 [ 33.366276] ? print_worker_info+0x1b0/0x660 [ 33.370660] dump_stack+0x185/0x1d0 [ 33.374266] should_fail+0x87b/0xab0 [ 33.377959] should_failslab+0x279/0x2a0 [ 33.382091] __kmalloc+0xc2/0x350 [ 33.385530] ? ip_rt_ioctl+0x157b/0x1da0 [ 33.389563] ? ip_rt_ioctl+0x14cc/0x1da0 [ 33.393598] ip_rt_ioctl+0x157b/0x1da0 [ 33.397467] inet_ioctl+0x6c8/0x820 [ 33.401074] ? sock_ioctl+0x4da/0xbf0 [ 33.404854] ? inet_shutdown+0x640/0x640 [ 33.408894] sock_do_ioctl+0x13b/0x6b0 [ 33.412759] ? do_vfs_ioctl+0xaf0/0x2440 [ 33.416798] sock_ioctl+0x4da/0xbf0 [ 33.420400] ? SYSC_ioctl+0x1d2/0x260 [ 33.424178] ? sock_poll+0x370/0x370 [ 33.427867] do_vfs_ioctl+0xaf0/0x2440 [ 33.431730] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 33.437071] ? __fget_light+0x6b9/0x710 [ 33.441022] ? prepare_exit_to_usermode+0x149/0x3a0 [ 33.446017] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 33.451367] SYSC_ioctl+0x1d2/0x260 [ 33.454976] SyS_ioctl+0x54/0x80 [ 33.458319] do_syscall_64+0x309/0x430 [ 33.462190] ? ioctl_file_clone+0x4f0/0x4f0 [ 33.466492] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 33.471654] RIP: 0033:0x446319 [ 33.474817] RSP: 002b:00007f5ad3ea9ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 33.482499] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000446319 [ 33.489744] RDX: 0000000020000100 RSI: 000000000000890b RDI: 0000000000000003 [ 33.496988] RBP: 00000000006dbc20 R08: 0000000000000001 R09: 0000000000000031 [ 33.504242] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 33.511489] R13: ffffffffffffffff R14: 00007f5ad3eaa9c0 R15: 0000000000000001 [ 33.519188] Dumping ftrace buffer: [ 33.522713] (ftrace buffer empty) [ 33.526397] Kernel Offset: disabled [ 33.530008] Rebooting in 86400 seconds..