[....] Starting enhanced syslogd: rsyslogd[ 12.677149] audit: type=1400 audit(1512863266.753:5): avc: denied { syslog } for pid=2993 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: [ 28.117458] audit: type=1400 audit(1512863282.193:6): avc: denied { map } for pid=3137 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 'ci-upstream-next-kasan-gce-3,10.128.15.225' (ECDSA) to the list of known hosts. [ 34.213719] audit: type=1400 audit(1512863288.289:7): avc: denied { map } for pid=3151 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2017/12/09 23:48:08 parsed 1 programs 2017/12/09 23:48:08 executed programs: 0 [ 34.673261] audit: type=1400 audit(1512863288.749:8): avc: denied { map } for pid=3151 comm="syz-execprog" path="/root/syzkaller-shm881214411" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 34.718074] skbuff: skb_over_panic: text:00000000e7d73cd2 len:196 put:20 head:00000000b8218f5e data:000000002650976f tail:0xd4 end:0xc0 dev:lo [ 34.731145] ------------[ cut here ]------------ [ 34.735874] kernel BUG at net/core/skbuff.c:104! [ 34.740657] invalid opcode: 0000 [#1] SMP KASAN [ 34.745293] Dumping ftrace buffer: [ 34.748797] (ftrace buffer empty) [ 34.752472] Modules linked in: [ 34.755633] CPU: 1 PID: 3165 Comm: syz-executor0 Not tainted 4.15.0-rc2-next-20171208+ #63 [ 34.764001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.773326] RIP: 0010:skb_panic+0x15c/0x1f0 [ 34.777610] RSP: 0000:ffff8801db307508 EFLAGS: 00010286 [ 34.782941] RAX: 0000000000000082 RBX: ffff8801c4c3c040 RCX: 0000000000000000 [ 34.790177] RDX: 0000000000000082 RSI: 1ffff1003b660e61 RDI: ffffed003b660e95 [ 34.797422] RBP: ffff8801db307570 R08: 1ffff1003b660e23 R09: 0000000000000000 [ 34.804657] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85bd70a0 [ 34.811892] R13: ffffffff84759072 R14: 0000000000000014 R15: ffff8801c54c2280 [ 34.819127] FS: 0000000001ad4940(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 34.827317] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.833164] CR2: 0000000020d09f80 CR3: 00000001c5ab6000 CR4: 00000000001406e0 [ 34.840400] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.847635] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.854871] Call Trace: [ 34.857418] [ 34.859541] ? __handle_mm_fault+0x1b68/0x3dd0 [ 34.864090] ? handle_mm_fault+0x38f/0x930 [ 34.868290] ? __do_page_fault+0x5c9/0xc90 [ 34.872490] ? add_grhead.isra.24+0x42/0x3b0 [ 34.876864] skb_put+0x181/0x1c0 [ 34.880196] add_grhead.isra.24+0x42/0x3b0 [ 34.884397] add_grec+0xa55/0x1060 [ 34.887904] ? check_noncircular+0x20/0x20 [ 34.892196] ? mld_sendpack+0xe60/0xe60 [ 34.896135] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 34.901113] ? trace_hardirqs_on+0xd/0x10 [ 34.905226] mld_ifc_timer_expire+0x4d2/0x770 [ 34.909690] call_timer_fn+0x23b/0x840 [ 34.913542] ? mld_dad_timer_expire+0x100/0x100 [ 34.918175] ? process_timeout+0x40/0x40 [ 34.922201] ? print_usage_bug+0x3f0/0x3f0 [ 34.926400] ? lock_downgrade+0x980/0x980 [ 34.930511] ? __run_timers+0x1ce/0xb60 [ 34.934463] ? lock_release+0xda0/0xda0 [ 34.938407] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 34.943386] ? mld_dad_timer_expire+0x100/0x100 [ 34.948019] ? mld_dad_timer_expire+0x100/0x100 [ 34.952653] __run_timers+0x7e1/0xb60 [ 34.956423] ? del_timer_sync+0x240/0x240 [ 34.960538] ? timerqueue_add+0x1e9/0x280 [ 34.964655] ? enqueue_hrtimer+0x162/0x490 [ 34.968855] ? find_held_lock+0x39/0x1d0 [ 34.972882] ? check_noncircular+0x20/0x20 [ 34.977082] ? print_usage_bug+0x3f0/0x3f0 [ 34.981282] ? lock_downgrade+0x980/0x980 [ 34.985405] ? lock_acquire+0x1d5/0x580 [ 34.989345] ? clockevents_program_event+0x163/0x2e0 [ 34.994416] ? __lock_is_held+0xbc/0x140 [ 34.998455] run_timer_softirq+0x4c/0xb0 [ 35.002480] __do_softirq+0x29d/0xbb2 [ 35.006249] ? __irqentry_text_end+0x1f8db4/0x1f8db4 [ 35.011334] ? do_timer+0x50/0x50 [ 35.014758] ? native_apic_msr_write+0x5c/0x80 [ 35.019305] ? do_raw_spin_trylock+0x190/0x190 [ 35.023853] ? lapic_next_event+0x54/0x80 [ 35.027968] ? clockevents_program_event+0x108/0x2e0 [ 35.033038] ? tick_program_event+0x83/0x100 [ 35.037412] ? __lock_is_held+0xbc/0x140 [ 35.041443] irq_exit+0x1d3/0x210 [ 35.044864] smp_apic_timer_interrupt+0x16b/0x700 [ 35.049669] ? smp_reschedule_interrupt+0xe6/0x670 [ 35.054563] ? smp_call_function_single_interrupt+0x640/0x640 [ 35.060410] ? _raw_spin_lock+0x32/0x40 [ 35.064349] ? _raw_spin_unlock+0x22/0x30 [ 35.068460] ? handle_edge_irq+0x2b4/0x7c0 [ 35.072659] ? task_prio+0x40/0x40 [ 35.076169] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.080980] apic_timer_interrupt+0xa9/0xb0 [ 35.085267] [ 35.087468] RIP: 0010:lock_is_held_type+0x18b/0x210 [ 35.092446] RSP: 0000:ffff8801c5d4f5f8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff11 [ 35.100117] RAX: dffffc0000000000 RBX: 0000000000000282 RCX: 0000000000000000 [ 35.107353] RDX: 1ffffffff0c59759 RSI: ffffffff86344c80 RDI: 0000000000000282 [ 35.114589] RBP: ffff8801c5d4f618 R08: 0000160000000000 R09: 0000000000000000 [ 35.121824] R10: ffffffffffffffe8 R11: 0000000000000000 R12: ffff8801c6f4a3c0 [ 35.129059] R13: 0000000000000000 R14: 00000000000011e6 R15: ffffffff85717140 [ 35.136306] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 35.142152] ___might_sleep+0x35e/0x470 [ 35.146091] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 35.151939] ? __might_sleep+0x95/0x190 [ 35.155882] clear_huge_page+0x24f/0x730 [ 35.159908] ? __raw_spin_lock_init+0x2d/0x100 [ 35.164459] do_huge_pmd_anonymous_page+0x59c/0x1b00 [ 35.169529] ? __thp_get_unmapped_area+0x130/0x130 [ 35.174434] ? __lock_acquire+0x6e9/0x47f0 [ 35.178913] ? __lock_acquire+0x6e9/0x47f0 [ 35.183116] ? futex_wait+0x69e/0x990 [ 35.186888] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 35.192042] ? __lock_acquire+0x6e9/0x47f0 [ 35.196244] ? __hrtimer_init+0x140/0x140 [ 35.200363] ? check_noncircular+0x20/0x20 [ 35.204568] __handle_mm_fault+0x1b68/0x3dd0 [ 35.208942] ? check_noncircular+0x20/0x20 [ 35.213143] ? __pmd_alloc+0x4e0/0x4e0 [ 35.217006] ? find_held_lock+0x39/0x1d0 [ 35.221037] ? lock_downgrade+0x980/0x980 [ 35.225162] ? __lock_is_held+0xbc/0x140 [ 35.229201] handle_mm_fault+0x38f/0x930 [ 35.233229] ? down_read_trylock+0xdb/0x170 [ 35.237516] ? __handle_mm_fault+0x3dd0/0x3dd0 [ 35.242063] ? vmacache_find+0x5f/0x280 [ 35.246002] ? vmacache_update+0xfe/0x130 [ 35.250115] ? find_vma+0x30/0x150 [ 35.253623] __do_page_fault+0x5c9/0xc90 [ 35.257651] ? mm_fault_error+0x2c0/0x2c0 [ 35.261765] ? ktime_get_resolution_ns+0x300/0x300 [ 35.266665] ? __might_sleep+0x95/0x190 [ 35.270607] do_page_fault+0xee/0x720 [ 35.274375] ? __do_page_fault+0xc90/0xc90 [ 35.278577] ? SyS_futex+0x269/0x390 [ 35.282257] ? do_futex+0x2280/0x2280 [ 35.286024] ? entry_SYSCALL_64_fastpath+0x4b/0x96 [ 35.290920] ? page_fault+0x36/0x60 [ 35.294517] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.299326] ? page_fault+0x36/0x60 [ 35.302919] page_fault+0x4c/0x60 [ 35.306339] RIP: 0033:0x439ed7 [ 35.309494] RSP: 002b:00007ffd395859e8 EFLAGS: 00010202 [ 35.314821] RAX: 0000000020d09f80 RBX: 0000000000000002 RCX: 000000006cd355ff [ 35.322055] RDX: 0000000000000014 RSI: 00000000007601a8 RDI: 0000000020d09f80 [ 35.329288] RBP: 0000000000000014 R08: 0000000000000000 R09: 0000000000000000 [ 35.336526] R10: 00007ffd395859b0 R11: 0000000000000206 R12: fffffffffffffffe [ 35.343758] R13: 0000000020d09f80 R14: 0000000000008792 R15: 0000000000000001 [ 35.350998] Code: 03 0f b6 04 01 84 c0 74 04 3c 03 7e 20 8b 4b 78 41 57 48 c7 c7 20 69 bd 85 52 56 4c 89 ea 41 50 4c 89 e6 45 89 f0 e8 9c 77 3d fd <0f> 0b 4c 89 4d b8 4c 89 45 c0 48 89 75 c8 48 89 55 d0 e8 3d 50 [ 35.370057] RIP: skb_panic+0x15c/0x1f0 RSP: ffff8801db307508 [ 35.375863] ---[ end trace 4cd648f900d4462d ]--- [ 35.380591] Kernel panic - not syncing: Fatal exception in interrupt [ 35.387074] Dumping ftrace buffer: [ 35.390580] (ftrace buffer empty) [ 35.394255] Kernel Offset: disabled [ 35.397848] Rebooting in 86400 seconds..