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-next-kasan-gce-6,10.128.15.209' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 60.741408] kasan: CONFIG_KASAN_INLINE enabled [ 60.742162] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 60.743278] general protection fault: 0000 [#1] SMP KASAN [ 60.744015] Dumping ftrace buffer: [ 60.744503] (ftrace buffer empty) [ 60.744997] Modules linked in: [ 60.745429] CPU: 0 PID: 2997 Comm: syzkaller259522 Not tainted 4.14.0-rc7-next-20171103+ #38 [ 60.746558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.747805] task: ffff8801ce416040 task.stack: ffff8801ce240000 [ 60.748620] RIP: 0010:asn1_ber_decoder+0x41e/0x1af0 [ 60.749328] RSP: 0018:ffff8801ce2478d0 EFLAGS: 00010246 [ 60.750037] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 60.750989] RDX: 0000000000000000 RSI: ffff8801ce1e6900 RDI: ffffffff853f1920 [ 60.751940] RBP: ffff8801ce247b88 R08: 0000000000000060 R09: 0000000000000000 [ 60.752891] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 60.753855] R13: 0000000000000000 R14: ffff8801ce247b60 R15: dffffc0000000000 [ 60.754806] FS: 0000000001aba880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 60.755881] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.756670] CR2: 0000000020e5d000 CR3: 00000001d0c41000 CR4: 00000000001406f0 [ 60.757622] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.758573] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.759524] Call Trace: [ 60.759890] ? pkcs7_parse_message+0x18a/0x730 [ 60.760501] ? verify_pkcs7_signature+0x8d/0x290 [ 60.761133] ? pkcs7_preparse+0x7b/0xc0 [ 60.762675] ? depot_save_stack+0x490/0x490 [ 60.766964] ? __lock_is_held+0xbc/0x140 [ 60.770997] ? __lock_is_held+0xbc/0x140 [ 60.775029] ? pkcs7_parse_message+0x18a/0x730 [ 60.779576] ? rcu_read_lock_sched_held+0x108/0x120 [ 60.784557] ? kmem_cache_alloc_trace+0x459/0x750 [ 60.789375] ? lock_release+0xd70/0xd70 [ 60.793318] pkcs7_parse_message+0x2b3/0x730 [ 60.797691] ? key_task_permission+0x330/0x330 [ 60.802246] ? pkcs7_supply_detached_data+0x90/0x90 [ 60.807232] verify_pkcs7_signature+0x8d/0x290 [ 60.811785] ? restrict_link_by_builtin_and_secondary_trusted+0x80/0x80 [ 60.818501] ? __down_interruptible+0x6b0/0x6b0 [ 60.823133] ? trace_hardirqs_on+0xd/0x10 [ 60.827248] ? current_kernel_time64+0x1d4/0x2f0 [ 60.831969] ? pkcs7_supply_detached_data+0x90/0x90 [ 60.836948] pkcs7_preparse+0x7b/0xc0 [ 60.840714] ? pkcs7_preparse+0xc0/0xc0 [ 60.844655] key_create_or_update+0x533/0x1040 [ 60.849208] ? key_type_lookup+0xd0/0xd0 [ 60.853235] ? join_session_keyring+0x300/0x300 [ 60.857869] ? mem_cgroup_commit_charge+0x111/0x750 [ 60.862865] ? memdup_user+0x5e/0x90 [ 60.866546] SyS_add_key+0x18a/0x340 [ 60.870223] ? key_get_type_from_user.constprop.10+0xd0/0xd0 [ 60.875985] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 60.880973] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 60.885691] RIP: 0033:0x43fcd9 [ 60.888846] RSP: 002b:00007ffe47bac7f8 EFLAGS: 00000217 ORIG_RAX: 00000000000000f8 [ 60.896519] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fcd9 [ 60.903753] RDX: 0000000020000000 RSI: 0000000020bc4ffb RDI: 0000000020e5cff5 [ 60.910990] RBP: 0000000000000086 R08: ffffffffffffffff R09: 0000000000000000 [ 60.918227] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401640 [ 60.925460] R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000 [ 60.932703] Code: 19 ff 48 8d 43 01 49 89 86 80 fe ff ff 48 89 85 a8 fd ff ff 48 8b 85 c0 fd ff ff 48 01 d8 48 89 c2 48 89 c1 48 c1 ea 03 83 e1 07 <42> 0f b6 14 3a 38 ca 7f 08 84 d2 0f 85 cd 0f 00 00 0f b6 00 88 [ 60.951772] RIP: asn1_ber_decoder+0x41e/0x1af0 RSP: ffff8801ce2478d0 [ 60.958312] ---[ end trace f22b26e28796f76b ]--- [ 60.963315] Kernel panic - not syncing: Fatal exception [ 60.968979] Dumping ftrace buffer: [ 60.972483] (ftrace buffer empty) [ 60.976161] Kernel Offset: disabled [ 60.979756] Rebooting in 86400 seconds..