[....] Starting enhanced syslogd: rsyslogd[ 15.364669] audit: type=1400 audit(1519331962.861:5): avc: denied { syslog } for pid=4004 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.565506] audit: type=1400 audit(1519331966.062:6): avc: denied { map } for pid=4142 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.17' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 24.938122] audit: type=1400 audit(1519331972.434:7): avc: denied { map } for pid=4156 comm="syzkaller804440" path="/root/syzkaller804440128" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 24.963165] WARNING: CPU: 0 PID: 4169 at ./include/net/sock.h:639 smc_unhash_sk+0x335/0x450 [ 24.972518] Kernel panic - not syncing: panic_on_warn set ... [ 24.972518] [ 24.979854] CPU: 0 PID: 4169 Comm: syzkaller804440 Not tainted 4.16.0-rc2+ #238 [ 24.987269] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.996593] Call Trace: [ 24.999155] dump_stack+0x194/0x24d [ 25.002759] ? arch_local_irq_restore+0x53/0x53 [ 25.007405] ? vsnprintf+0x1ed/0x1900 [ 25.011187] panic+0x1e4/0x41c [ 25.014355] ? refcount_error_report+0x214/0x214 [ 25.019082] ? show_regs_print_info+0x18/0x18 [ 25.023556] ? __destroy_inode+0x660/0x660 [ 25.027768] ? __warn+0x1c1/0x200 [ 25.031202] ? smc_unhash_sk+0x335/0x450 [ 25.035234] __warn+0x1dc/0x200 [ 25.038487] ? smc_unhash_sk+0x335/0x450 [ 25.042526] report_bug+0x211/0x2d0 [ 25.046130] fixup_bug.part.11+0x37/0x80 [ 25.050165] do_error_trap+0x2d7/0x3e0 [ 25.054032] ? math_error+0x400/0x400 [ 25.057804] ? reacquire_held_locks+0x1f9/0x3e0 [ 25.062450] ? lock_acquire+0x1d5/0x580 [ 25.066395] ? lock_acquire+0x1d5/0x580 [ 25.070350] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.075172] do_invalid_op+0x1b/0x20 [ 25.078856] invalid_op+0x58/0x80 [ 25.082280] RIP: 0010:smc_unhash_sk+0x335/0x450 [ 25.086920] RSP: 0018:ffff8801bf6bf198 EFLAGS: 00010293 [ 25.092257] RAX: ffff8801d390e580 RBX: 1ffff10037ed7e37 RCX: ffffffff85a3f805 [ 25.099498] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 1ffff10037ed7e3b [ 25.106741] RBP: ffff8801bf6bf280 R08: dffffc0000000000 R09: 0000000000000004 [ 25.113983] R10: ffff8801bf6bf050 R11: 0000000000000004 R12: ffff8801bf6bf258 [ 25.121228] R13: ffffffff8766a2e0 R14: ffff8801d2dfa7c0 R15: 1ffff10037ed7e3b [ 25.128485] ? smc_unhash_sk+0x335/0x450 [ 25.132527] ? smc_unhash_sk+0x335/0x450 [ 25.136567] ? smc_hash_sk+0x2f0/0x2f0 [ 25.140430] ? release_sock+0x1d4/0x2a0 [ 25.144376] ? __local_bh_enable_ip+0x121/0x230 [ 25.149023] ? __release_sock+0x360/0x360 [ 25.153145] ? smc_release+0x23c/0x580 [ 25.157014] ? trace_hardirqs_on+0xd/0x10 [ 25.161145] ? __local_bh_enable_ip+0x121/0x230 [ 25.165796] smc_release+0x321/0x580 [ 25.169489] sock_release+0x8d/0x1e0 [ 25.173174] ? sock_alloc_file+0x560/0x560 [ 25.177382] sock_close+0x16/0x20 [ 25.180808] __fput+0x327/0x7e0 [ 25.184068] ? fput+0x140/0x140 [ 25.187323] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.191798] ____fput+0x15/0x20 [ 25.195050] task_work_run+0x199/0x270 [ 25.198911] ? task_work_cancel+0x210/0x210 [ 25.203209] ? _raw_spin_unlock+0x22/0x30 [ 25.207328] ? switch_task_namespaces+0x87/0xc0 [ 25.211976] do_exit+0x9bb/0x1ad0 [ 25.215411] ? mm_update_next_owner+0x930/0x930 [ 25.220055] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.225223] ? __lock_acquire+0x664/0x3e00 [ 25.229440] ? check_noncircular+0x20/0x20 [ 25.233651] ? __lock_is_held+0xb6/0x140 [ 25.237694] ? check_noncircular+0x20/0x20 [ 25.241908] ? __lock_is_held+0xb6/0x140 [ 25.245955] ? find_held_lock+0x35/0x1d0 [ 25.250001] ? kprobe_flush_task+0x1a3/0x5d0 [ 25.254392] ? check_noncircular+0x20/0x20 [ 25.258617] ? lock_release+0xa40/0xa40 [ 25.262568] ? memset+0x31/0x40 [ 25.265825] ? find_held_lock+0x35/0x1d0 [ 25.269876] ? get_signal+0x7a9/0x16d0 [ 25.273739] ? lock_downgrade+0x980/0x980 [ 25.277866] do_group_exit+0x149/0x400 [ 25.281729] ? do_raw_spin_trylock+0x190/0x190 [ 25.286285] ? SyS_exit+0x30/0x30 [ 25.289710] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.294182] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.299175] get_signal+0x73a/0x16d0 [ 25.302871] ? ptrace_notify+0x130/0x130 [ 25.306913] ? __schedule+0x90d/0x2070 [ 25.310770] ? lock_downgrade+0x980/0x980 [ 25.314897] ? __sched_text_start+0x8/0x8 [ 25.319022] ? __local_bh_enable_ip+0x121/0x230 [ 25.323663] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.328650] ? release_sock+0x1d4/0x2a0 [ 25.332596] ? trace_hardirqs_on+0xd/0x10 [ 25.336723] do_signal+0x90/0x1e90 [ 25.340236] ? release_sock+0x1d4/0x2a0 [ 25.344190] ? setup_sigcontext+0x7d0/0x7d0 [ 25.348492] ? schedule+0xf5/0x430 [ 25.352008] ? SYSC_connect+0x2e0/0x4a0 [ 25.355959] ? __schedule+0x2070/0x2070 [ 25.359902] ? SYSC_bind+0x410/0x410 [ 25.363605] ? exit_to_usermode_loop+0x8c/0x2f0 [ 25.368254] exit_to_usermode_loop+0x258/0x2f0 [ 25.372812] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 25.378322] ? do_syscall_64+0xb6/0x940 [ 25.382276] do_syscall_64+0x6e5/0x940 [ 25.386135] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.390602] ? finish_task_switch+0x1c0/0x860 [ 25.395069] ? finish_task_switch+0x181/0x860 [ 25.399539] ? syscall_return_slowpath+0x550/0x550 [ 25.404451] ? syscall_return_slowpath+0x2ac/0x550 [ 25.409371] ? prepare_exit_to_usermode+0x350/0x350 [ 25.414363] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 25.419703] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.424526] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 25.429685] RIP: 0033:0x445a59 [ 25.432849] RSP: 002b:00007f458d008db8 EFLAGS: 00000202 ORIG_RAX: 00000000000000ca [ 25.440528] RAX: 0000000000000001 RBX: 00000000006dac3c RCX: 0000000000445a59 [ 25.447771] RDX: 0000000000445a59 RSI: 0000000000000001 RDI: 00000000006dac3c [ 25.455017] RBP: 00000000006dac38 R08: 0000000000000000 R09: 0000000000000000 [ 25.462259] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 [ 25.469500] R13: 00007ffc597e67cf R14: 00007f458d0099c0 R15: 0000000000000005 [ 25.477411] Dumping ftrace buffer: [ 25.481034] (ftrace buffer empty) [ 25.484716] Kernel Offset: disabled [ 25.488316] Rebooting in 86400 seconds..