[....] Starting enhanced syslogd: rsyslogd[ 15.940260] audit: type=1400 audit(1518094603.137:5): avc: denied { syslog } for pid=4015 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: [ 18.671770] audit: type=1400 audit(1518094605.867:6): avc: denied { map } for pid=4153 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 '10.128.15.215' (ECDSA) to the list of known hosts. executing program [ 40.671685] audit: type=1400 audit(1518094627.868:7): avc: denied { map } for pid=4171 comm="syzkaller731818" path="/root/syzkaller731818472" 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 [ 40.705979] WARNING: CPU: 1 PID: 4172 at mm/slab_common.c:1012 kmalloc_slab+0x5d/0x70 [ 40.713986] Kernel panic - not syncing: panic_on_warn set ... [ 40.713986] [ 40.721317] CPU: 1 PID: 4172 Comm: syzkaller731818 Not tainted 4.15.0+ #302 [ 40.728386] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.737716] Call Trace: [ 40.740280] dump_stack+0x194/0x257 [ 40.743888] ? arch_local_irq_restore+0x53/0x53 [ 40.748538] ? vsnprintf+0x1ed/0x1900 [ 40.752316] panic+0x1e4/0x41c [ 40.755481] ? refcount_error_report+0x214/0x214 [ 40.760217] ? show_regs_print_info+0x18/0x18 [ 40.764698] ? __warn+0x1c1/0x200 [ 40.768128] ? kmalloc_slab+0x5d/0x70 [ 40.771896] __warn+0x1dc/0x200 [ 40.775145] ? kmalloc_slab+0x5d/0x70 [ 40.778922] report_bug+0x211/0x2d0 [ 40.782529] fixup_bug.part.11+0x37/0x80 [ 40.786561] do_error_trap+0x2d7/0x3e0 [ 40.790431] ? math_error+0x400/0x400 [ 40.794208] ? rcu_read_lock_held+0xa9/0xc0 [ 40.798500] ? xfrm_state_get_afinfo+0x138/0x280 [ 40.803240] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.808056] do_invalid_op+0x1b/0x20 [ 40.811743] invalid_op+0x22/0x40 [ 40.815168] RIP: 0010:kmalloc_slab+0x5d/0x70 [ 40.819543] RSP: 0018:ffff8801bb7af2f0 EFLAGS: 00010246 [ 40.824883] RAX: 0000000000000000 RBX: 00000000fffff5bc RCX: ffffffff84c14688 [ 40.832122] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000fffff5bc [ 40.839363] RBP: ffff8801bb7af2f0 R08: 0000000000000000 R09: 1ffff100376f5e21 [ 40.846604] R10: ffff8801bb7af040 R11: 0000000000000001 R12: 00000000fffff5bc [ 40.853844] R13: ffff8801bb7af598 R14: 00000000014080c0 R15: ffff8801c8224dc0 [ 40.861097] ? xfrm_add_sa+0x1b08/0x3440 [ 40.865136] __kmalloc+0x25/0x760 [ 40.868562] ? xfrm_get_mode.part.29+0x260/0x260 [ 40.873286] ? xfrm_find_algo+0x1c4/0x270 [ 40.877409] ? xfrm_add_sa+0x1b15/0x3440 [ 40.881445] xfrm_add_sa+0x1b15/0x3440 [ 40.885315] ? xfrm_send_state_notify+0x1c50/0x1c50 [ 40.890303] ? nla_parse+0x29a/0x3d0 [ 40.894001] ? nla_validate+0x1c0/0x1c0 [ 40.897952] ? __netlink_ns_capable+0xe1/0x120 [ 40.902510] ? xfrm_send_state_notify+0x1c50/0x1c50 [ 40.907495] xfrm_user_rcv_msg+0x41c/0x860 [ 40.911699] ? xfrm_user_rcv_msg+0x41c/0x860 [ 40.916083] ? xfrm_dump_sa_done+0xe0/0xe0 [ 40.920289] ? netlink_deliver_tap+0x2c0/0xf90 [ 40.924844] ? lock_downgrade+0x980/0x980 [ 40.928963] ? lock_release+0xa40/0xa40 [ 40.932930] ? __might_fault+0x110/0x1d0 [ 40.936969] netlink_rcv_skb+0x14b/0x380 [ 40.941001] ? xfrm_dump_sa_done+0xe0/0xe0 [ 40.945206] ? netlink_ack+0xa10/0xa10 [ 40.949070] ? netlink_skb_destructor+0x1d0/0x1d0 [ 40.953888] xfrm_netlink_rcv+0x6f/0x90 [ 40.957835] netlink_unicast+0x4c4/0x6b0 [ 40.961870] ? netlink_attachskb+0x8a0/0x8a0 [ 40.966253] ? security_netlink_send+0x81/0xb0 [ 40.970809] netlink_sendmsg+0xa4a/0xe60 [ 40.974846] ? netlink_unicast+0x6b0/0x6b0 [ 40.979055] ? security_socket_sendmsg+0x89/0xb0 [ 40.983780] ? netlink_unicast+0x6b0/0x6b0 [ 40.987990] sock_sendmsg+0xca/0x110 [ 40.991677] ___sys_sendmsg+0x767/0x8b0 [ 40.995628] ? copy_msghdr_from_user+0x590/0x590 [ 41.000362] ? lock_downgrade+0x980/0x980 [ 41.004481] ? check_noncircular+0x20/0x20 [ 41.008692] ? __fget_light+0x2b2/0x3c0 [ 41.012640] ? fget_raw+0x20/0x20 [ 41.016064] ? handle_mm_fault+0x270/0x970 [ 41.020285] ? __do_page_fault+0x5f7/0xc90 [ 41.024493] ? lock_downgrade+0x980/0x980 [ 41.028622] __sys_sendmsg+0xe5/0x210 [ 41.032391] ? __sys_sendmsg+0xe5/0x210 [ 41.036337] ? SyS_shutdown+0x290/0x290 [ 41.040289] ? __do_page_fault+0x3d6/0xc90 [ 41.044504] ? move_addr_to_kernel+0x60/0x60 [ 41.048883] ? do_raw_spin_trylock+0x190/0x190 [ 41.053442] SyS_sendmsg+0x2d/0x50 [ 41.056952] ? __sys_sendmsg+0x210/0x210 [ 41.060985] do_syscall_64+0x282/0x940 [ 41.064841] ? __do_page_fault+0xc90/0xc90 [ 41.069047] ? finish_task_switch+0x1e2/0x890 [ 41.073512] ? finish_task_switch+0x1b9/0x890 [ 41.077980] ? syscall_return_slowpath+0x550/0x550 [ 41.082890] ? syscall_return_slowpath+0x2ac/0x550 [ 41.087789] ? prepare_exit_to_usermode+0x350/0x350 [ 41.092787] ? retint_user+0x18/0x18 [ 41.096475] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.101293] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 41.106453] RIP: 0033:0x445a09 [ 41.109611] RSP: 002b:00007ff29bc19da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 41.117288] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445a09 [ 41.124528] RDX: 0000000000000000 RSI: 000000002014f000 RDI: 0000000000000003 [ 41.131767] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 41.139011] R10: 0000000000000000 R11: 0000000000000246 R12: 0073746174735f68 [ 41.146257] R13: 7361682f6376612f R14: 78756e696c65732f R15: 0000000000000004 [ 41.154005] Dumping ftrace buffer: [ 41.157586] (ftrace buffer empty) [ 41.161267] Kernel Offset: disabled [ 41.164867] Rebooting in 86400 seconds..