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 'ci-upstream-mmots-kasan-gce-1,10.128.0.24' (ECDSA) to the list of known hosts. net.ipv6.conf.syz5.accept_dad = 0 net.ipv6.conf.syz2.accept_dad = 0 net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz7.accept_dad = 0 net.ipv6.conf.syz6.accept_dad = 0 net.ipv6.conf.syz4.accept_dad = 0 net.ipv6.conf.syz1.accept_dad = 0 net.ipv6.conf.syz3.accept_dad = 0 net.ipv6.conf.syz2.router_solicitations = 0 net.ipv6.conf.syz5.router_solicitations = 0 net.ipv6.conf.syz7.router_solicitations = 0 net.ipv6.conf.syz6.router_solicitations = 0 net.ipv6.conf.syz0.router_solicitations = 0 net.ipv6.conf.syz4.router_solicitations = 0 net.ipv6.conf.syz1.router_solicitations = 0 net.ipv6.conf.syz3.router_solicitations = 0 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 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 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 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 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 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 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 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 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 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 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 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 syzkaller login: [ 66.066173] dev_remove_pack: ffff8801c49b1380 not found 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 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 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 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 executing program executing program executing program executing program executing program executing program executing program [ 67.091110] BUG: spinlock bad magic on CPU#1, syzkaller869747/6062 [ 67.097478] lock: 0xffff8801bf6a90e8, .magic: ffff8801, .owner: syzkaller869747/6062, .owner_cpu: 1 [ 67.106743] CPU: 1 PID: 6062 Comm: syzkaller869747 Not tainted 4.13.0-mm1+ #7 [ 67.113981] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.123301] Call Trace: [ 67.125859] dump_stack+0x194/0x257 [ 67.129456] ? arch_local_irq_restore+0x53/0x53 [ 67.134091] ? lock_downgrade+0x990/0x990 [ 67.138211] spin_dump+0x14d/0x280 [ 67.141719] do_raw_spin_unlock+0x2bd/0x330 [ 67.146011] ? do_raw_spin_trylock+0x190/0x190 [ 67.150563] ? lock_release+0xd70/0xd70 [ 67.154512] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 67.159499] _raw_spin_unlock+0x22/0x30 [ 67.163442] __fanout_link+0xaf/0xf0 [ 67.167123] register_prot_hook.part.49+0x45/0xb0 [ 67.171933] packet_set_ring+0xf3c/0x1b70 [ 67.176061] ? packet_poll+0x5c0/0x5c0 [ 67.179918] ? __might_fault+0xe0/0x1d0 [ 67.183864] ? lock_release+0xd70/0xd70 [ 67.187806] ? check_same_owner+0x320/0x320 [ 67.192093] ? __check_object_size+0x25d/0x4f0 [ 67.196646] ? __might_sleep+0x95/0x190 [ 67.200593] ? kasan_check_write+0x14/0x20 [ 67.204794] ? _copy_from_user+0x99/0x110 [ 67.208908] packet_setsockopt+0x6cd/0x1e80 [ 67.213200] ? fanout_add+0x1190/0x1190 [ 67.217142] ? lock_downgrade+0x990/0x990 [ 67.221262] ? __fget+0xbb/0x580 [ 67.224605] ? lock_release+0xd70/0xd70 [ 67.228547] ? __lock_is_held+0xbc/0x140 [ 67.232582] ? __fget+0x362/0x580 [ 67.236010] ? iterate_fd+0x3f0/0x3f0 [ 67.239783] ? find_held_lock+0x39/0x1d0 [ 67.243818] ? sock_has_perm+0x29c/0x400 [ 67.247845] ? __fget_light+0x29d/0x390 [ 67.251793] ? selinux_tun_dev_create+0xc0/0xc0 [ 67.256432] ? selinux_netlbl_socket_setsockopt+0x10c/0x460 [ 67.262117] ? selinux_netlbl_sock_rcv_skb+0x730/0x730 [ 67.267362] ? do_raw_spin_trylock+0x190/0x190 [ 67.271911] ? lock_release+0xd70/0xd70 [ 67.275854] ? selinux_socket_setsockopt+0x64/0x80 [ 67.280762] SyS_setsockopt+0x189/0x360 [ 67.284705] ? SyS_setsockopt+0x189/0x360 [ 67.288824] ? SyS_recv+0x40/0x40 [ 67.292256] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 67.297074] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 67.302059] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 67.306785] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 67.311507] RIP: 0033:0x44a659 [ 67.314664] RSP: 002b:00007f9a69c82d08 EFLAGS: 00000202 ORIG_RAX: 0000000000000036 [ 67.322343] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000044a659 [ 67.329585] RDX: 0000000000000005 RSI: 0000000000000107 RDI: 0000000000000023 executing program executing program [ 67.336821] RBP: 0000000000000082 R08: 000000000000047e R09: 00007f9a69c83700 [ 67.344059] R10: 0000000020001000 R11: 0000000000000202 R12: 0000000000000000 [ 67.351296] R13: 00007ffd19d93edf R14: 00007f9a69c839c0 R15: 0000000000000000