[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 11.987870] mcstransd (3049) used greatest stack depth: 14504 bytes left 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: [ 31.049080] audit: type=1400 audit(1512720780.768:6): avc: denied { map } for pid=3139 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-mmots-kasan-gce-7,10.128.0.41' (ECDSA) to the list of known hosts. [ 37.113803] audit: type=1400 audit(1512720786.833:7): avc: denied { map } for pid=3152 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 2017/12/08 08:13:07 parsed 1 programs 2017/12/08 08:13:07 executed programs: 0 [ 37.574449] audit: type=1400 audit(1512720787.294:8): avc: denied { map } for pid=3152 comm="syz-execprog" path="/root/syzkaller-shm120126954" 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 [ 37.625369] skbuff: skb_over_panic: text:0000000010b86b8d len:196 put:20 head:000000003b477e60 data:000000000e85441e tail:0xd4 end:0xc0 dev:lo [ 37.641033] ------------[ cut here ]------------ [ 37.645775] kernel BUG at net/core/skbuff.c:104! [ 37.650985] invalid opcode: 0000 [#1] SMP KASAN [ 37.655626] Dumping ftrace buffer: [ 37.659132] (ftrace buffer empty) [ 37.662809] Modules linked in: [ 37.665969] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.15.0-rc2-mm1+ #39 [ 37.672855] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.682184] RIP: 0010:skb_panic+0x15c/0x1f0 [ 37.686470] RSP: 0018:ffff8801db307508 EFLAGS: 00010286 [ 37.691798] RAX: 0000000000000082 RBX: ffff8801c517e840 RCX: 0000000000000000 [ 37.699032] RDX: 0000000000000082 RSI: 1ffff1003b660e61 RDI: ffffed003b660e95 [ 37.706266] RBP: ffff8801db307570 R08: 1ffff1003b660e23 R09: 0000000000000000 [ 37.713761] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85bd4020 [ 37.720998] R13: ffffffff84754ed2 R14: 0000000000000014 R15: ffff8801c4e26540 [ 37.728243] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 37.736444] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.742298] CR2: 0000000000463610 CR3: 00000001c6698000 CR4: 00000000001406e0 [ 37.749544] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.756778] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.764019] Call Trace: [ 37.766568] [ 37.768687] ? do_idle+0x24a/0x3b0 [ 37.772190] ? cpu_startup_entry+0x18/0x20 [ 37.776737] ? start_secondary+0x330/0x460 [ 37.780937] ? add_grhead.isra.24+0x42/0x3b0 [ 37.785308] skb_put+0x181/0x1c0 [ 37.788641] add_grhead.isra.24+0x42/0x3b0 [ 37.792840] add_grec+0xa55/0x1060 [ 37.796342] ? check_noncircular+0x20/0x20 [ 37.800546] ? mld_sendpack+0xe60/0xe60 [ 37.804484] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 37.809468] ? trace_hardirqs_on+0xd/0x10 [ 37.813585] mld_ifc_timer_expire+0x4d2/0x770 [ 37.818059] call_timer_fn+0x23b/0x840 [ 37.821911] ? mld_dad_timer_expire+0x100/0x100 [ 37.826546] ? process_timeout+0x40/0x40 [ 37.830576] ? lock_downgrade+0x980/0x980 [ 37.834687] ? __run_timers+0x1ce/0xb60 [ 37.838627] ? lock_release+0xda0/0xda0 [ 37.842567] ? do_raw_spin_trylock+0x190/0x190 [ 37.847449] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 37.852434] ? mld_dad_timer_expire+0x100/0x100 [ 37.857065] ? mld_dad_timer_expire+0x100/0x100 [ 37.861871] __run_timers+0x7e1/0xb60 [ 37.865640] ? del_timer_sync+0x240/0x240 [ 37.869755] ? timerqueue_add+0x1e9/0x280 [ 37.873871] ? smp_reschedule_interrupt+0xe6/0x670 [ 37.878762] ? smp_thermal_interrupt+0x700/0x700 [ 37.883489] ? find_held_lock+0x39/0x1d0 [ 37.887781] ? retint_kernel+0x10/0x10 [ 37.891633] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 37.896615] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 37.901338] ? rcu_pm_notify+0xc0/0xc0 [ 37.905194] run_timer_softirq+0x4c/0xb0 [ 37.909219] __do_softirq+0x29d/0xbb2 [ 37.912990] ? __irqentry_text_end+0x1f8db4/0x1f8db4 [ 37.918492] ? do_timer+0x50/0x50 [ 37.922779] ? native_apic_msr_write+0x5c/0x80 [ 37.927848] ? do_raw_spin_trylock+0x190/0x190 [ 37.932394] ? lapic_next_event+0x54/0x80 [ 37.936508] ? clockevents_program_event+0x108/0x2e0 [ 37.941575] ? tick_program_event+0x83/0x100 [ 37.945949] ? hrtimer_interrupt+0x489/0x5f0 [ 37.950323] ? rcu_pm_notify+0xc0/0xc0 [ 37.954182] irq_exit+0x1d3/0x210 [ 37.957602] smp_apic_timer_interrupt+0x16b/0x700 [ 37.962419] ? smp_reschedule_interrupt+0xe6/0x670 [ 37.967313] ? smp_call_function_single_interrupt+0x640/0x640 [ 37.973162] ? _raw_spin_lock+0x32/0x40 [ 37.977102] ? _raw_spin_unlock+0x22/0x30 [ 37.981216] ? handle_edge_irq+0x2b4/0x7c0 [ 37.985424] ? task_prio+0x40/0x40 [ 37.988935] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.993744] apic_timer_interrupt+0xa9/0xb0 [ 37.998036] [ 38.000241] RIP: 0010:native_safe_halt+0x6/0x10 [ 38.004871] RSP: 0018:ffff8801d9f97da8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff11 [ 38.012541] RAX: dffffc0000000000 RBX: 1ffff1003b3f2fb8 RCX: 0000000000000000 [ 38.019774] RDX: 1ffffffff0c59734 RSI: 0000000000000001 RDI: ffffffff862cb9a0 [ 38.027007] RBP: ffff8801d9f97da8 R08: 0000000000000000 R09: 0000000000000000 [ 38.034243] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 38.041478] R13: ffff8801d9f97e60 R14: ffffffff869eb920 R15: 0000000000000000 [ 38.049508] ? trace_hardirqs_on+0xd/0x10 [ 38.053621] default_idle+0xbf/0x430 [ 38.057301] ? __sched_text_end+0x4/0x4 [ 38.061239] ? rcu_eqs_special_set+0x1e0/0x1e0 [ 38.065785] ? tsc_verify_tsc_adjust+0xf6/0x3e0 [ 38.070420] ? set_cpu_sd_state_idle+0x1dc/0x2d0 [ 38.075138] ? mark_tsc_async_resets+0x30/0x30 [ 38.079694] arch_cpu_idle+0xa/0x10 [ 38.083286] default_idle_call+0x36/0x90 [ 38.087313] do_idle+0x24a/0x3b0 [ 38.090643] ? complete+0x6a/0x80 [ 38.094080] cpu_startup_entry+0x18/0x20 [ 38.098194] start_secondary+0x330/0x460 [ 38.102221] secondary_startup_64+0xa5/0xb0 [ 38.106603] Code: 03 0f b6 04 01 84 c0 74 04 3c 03 7e 20 8b 4b 78 41 57 48 c7 c7 a0 38 bd 85 52 56 4c 89 ea 41 50 4c 89 e6 45 89 f0 e8 0c b6 3d fd <0f> 0b 4c 89 4d b8 4c 89 45 c0 48 89 75 c8 48 89 55 d0 e8 7d 93 [ 38.125836] RIP: skb_panic+0x15c/0x1f0 RSP: ffff8801db307508 [ 38.131633] ---[ end trace 941a8a0f633e271f ]--- [ 38.136362] Kernel panic - not syncing: Fatal exception in interrupt [ 38.143367] Dumping ftrace buffer: [ 38.146871] (ftrace buffer empty) [ 38.150545] Kernel Offset: disabled [ 38.154136] Rebooting in 86400 seconds..