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-kasan-gce-8,10.128.15.223' (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 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 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: [ 33.467742] dev_remove_pack: ffff8801c9f998c0 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 [ 34.043896] BUG: spinlock bad magic on CPU#0, syzkaller772544/5430 [ 34.050266] lock: 0xffff8801ce1b0ba8, .magic: ffff8801, .owner: syzkaller772544/5430, .owner_cpu: 0 [ 34.059525] CPU: 0 PID: 5430 Comm: syzkaller772544 Not tainted 4.14.0-rc1+ #92 [ 34.066847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.076166] Call Trace: [ 34.078721] dump_stack+0x194/0x257 [ 34.082314] ? arch_local_irq_restore+0x53/0x53 [ 34.086956] ? lock_downgrade+0x990/0x990 [ 34.091076] spin_dump+0x14d/0x280 [ 34.094584] do_raw_spin_unlock+0x2bd/0x330 [ 34.098869] ? do_raw_spin_trylock+0x190/0x190 [ 34.103423] ? __dev_remove_pack+0x279/0x3b0 [ 34.107799] _raw_spin_unlock+0x22/0x30 [ 34.111738] __fanout_link+0xaf/0xf0 [ 34.115416] fanout_add+0x88b/0x1190 [ 34.119093] ? pgtable_trans_huge_deposit+0x342/0x6d0 [ 34.124250] ? packet_release+0xd70/0xd70 [ 34.128359] ? do_raw_spin_trylock+0x190/0x190 [ 34.132905] ? preempt_schedule_common+0x35/0x60 [ 34.137634] ? find_held_lock+0x39/0x1d0 [ 34.141664] ? lock_downgrade+0x990/0x990 [ 34.145781] ? __might_fault+0xe0/0x1d0 [ 34.149723] ? lock_release+0xd70/0xd70 [ 34.153661] ? check_same_owner+0x320/0x320 [ 34.157952] ? __might_sleep+0x95/0x190 [ 34.161896] ? kasan_check_write+0x14/0x20 [ 34.166095] ? _copy_from_user+0x99/0x110 [ 34.170208] packet_setsockopt+0xfdc/0x1e80 [ 34.174499] ? fanout_add+0x1190/0x1190 [ 34.178438] ? lock_downgrade+0x990/0x990 [ 34.182555] ? __fget+0xbb/0x580 [ 34.185887] ? lock_release+0xd70/0xd70 [ 34.189827] ? __lock_is_held+0xbc/0x140 [ 34.193857] ? __fget+0x362/0x580 [ 34.197278] ? iterate_fd+0x3f0/0x3f0 [ 34.201042] ? lock_downgrade+0x990/0x990 [ 34.205168] ? sock_has_perm+0x29c/0x400 [ 34.209191] ? __fget_light+0x29d/0x390 [ 34.213153] ? selinux_tun_dev_create+0xc0/0xc0 [ 34.217786] ? selinux_netlbl_socket_setsockopt+0x10c/0x460 [ 34.223459] ? selinux_netlbl_sock_rcv_skb+0x730/0x730 [ 34.228714] ? selinux_socket_setsockopt+0x64/0x80 [ 34.233613] SyS_setsockopt+0x189/0x360 [ 34.237554] ? SyS_setsockopt+0x189/0x360 [ 34.241667] ? SyS_recv+0x40/0x40 [ 34.245086] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 34.249894] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 34.254875] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.259598] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 34.264318] RIP: 0033:0x445909 [ 34.267484] RSP: 002b:00007fa3e33c5dc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000036 [ 34.275171] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445909 [ 34.282405] RDX: 0000000000000012 RSI: 0000000000000107 RDI: 0000000000000024 [ 34.289639] RBP: 0000000000000082 R08: 0000000000000004 R09: 00007fa3e33c6700 [ 34.296871] R10: 0000000020cdeffc R11: 0000000000000202 R12: 0000000000000000 [ 34.304106] R13: 00007ffdd1ddc1cf R14: 00007fa3e33c69c0 R15: 0000000000000000