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-5,10.128.0.15' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 17.182837] kasan: CONFIG_KASAN_INLINE enabled [ 17.183549] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 17.184708] general protection fault: 0000 [#1] SMP KASAN [ 17.185487] Dumping ftrace buffer: [ 17.185971] (ftrace buffer empty) [ 17.186479] Modules linked in: [ 17.186912] CPU: 0 PID: 2990 Comm: syzkaller888396 Not tainted 4.14.0-rc7-next-20171103+ #38 [ 17.188037] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 17.189257] task: ffff8801d07364c0 task.stack: ffff8801ce7c8000 [ 17.190066] RIP: 0010:asn1_ber_decoder+0x41e/0x1af0 [ 17.190730] RSP: 0018:ffff8801ce7cf8d0 EFLAGS: 00010246 [ 17.191460] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 17.192411] RDX: 0000000000000000 RSI: ffff8801ce96b780 RDI: ffffffff853f1920 [ 17.193363] RBP: ffff8801ce7cfb88 R08: 0000000000000060 R09: 0000000000000000 [ 17.194330] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 17.195295] R13: 0000000000000000 R14: ffff8801ce7cfb60 R15: dffffc0000000000 [ 17.196258] FS: 0000000000d81880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 17.197361] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 17.198135] CR2: 00000000207c9ffb CR3: 00000001bf317000 CR4: 00000000001406f0 [ 17.199115] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 17.200065] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 17.201018] Call Trace: [ 17.201387] ? pkcs7_parse_message+0x18a/0x730 [ 17.202004] ? verify_pkcs7_signature+0x8d/0x290 [ 17.202639] ? pkcs7_preparse+0x7b/0xc0 [ 17.204635] ? depot_save_stack+0x490/0x490 [ 17.208922] ? __lock_is_held+0xbc/0x140 [ 17.212956] ? __lock_is_held+0xbc/0x140 [ 17.216990] ? pkcs7_parse_message+0x18a/0x730 [ 17.221538] ? rcu_read_lock_sched_held+0x108/0x120 [ 17.226522] ? kmem_cache_alloc_trace+0x459/0x750 [ 17.231339] ? lock_release+0xd70/0xd70 [ 17.235282] pkcs7_parse_message+0x2b3/0x730 [ 17.239655] ? key_task_permission+0x330/0x330 [ 17.244205] ? pkcs7_supply_detached_data+0x90/0x90 [ 17.249186] verify_pkcs7_signature+0x8d/0x290 [ 17.253735] ? restrict_link_by_builtin_and_secondary_trusted+0x80/0x80 [ 17.260451] ? __down_interruptible+0x6b0/0x6b0 [ 17.265083] ? trace_hardirqs_on+0xd/0x10 [ 17.269197] ? current_kernel_time64+0x1d4/0x2f0 [ 17.273920] ? pkcs7_supply_detached_data+0x90/0x90 [ 17.278901] pkcs7_preparse+0x7b/0xc0 [ 17.282664] ? pkcs7_preparse+0xc0/0xc0 [ 17.286605] key_create_or_update+0x533/0x1040 [ 17.291161] ? key_type_lookup+0xd0/0xd0 [ 17.295187] ? join_session_keyring+0x300/0x300 [ 17.299824] ? mem_cgroup_commit_charge+0x111/0x750 [ 17.304818] ? memdup_user+0x5e/0x90 [ 17.308499] SyS_add_key+0x18a/0x340 [ 17.312178] ? key_get_type_from_user.constprop.10+0xd0/0xd0 [ 17.317939] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 17.322926] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 17.327645] RIP: 0033:0x43fcd9 [ 17.330799] RSP: 002b:00007fffcb8c1408 EFLAGS: 00000217 ORIG_RAX: 00000000000000f8 [ 17.338470] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcd9 [ 17.345703] RDX: 0000000020000000 RSI: 00000000207c9ffb RDI: 000000002009b000 [ 17.352939] RBP: 0000000000000086 R08: fffffffffffffffe R09: 0000000000000000 [ 17.360172] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401640 [ 17.367406] R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000 [ 17.374648] 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 [ 17.393720] RIP: asn1_ber_decoder+0x41e/0x1af0 RSP: ffff8801ce7cf8d0 [ 17.400251] ---[ end trace 2b5d6af98bc7933f ]--- [ 17.405291] Kernel panic - not syncing: Fatal exception [ 17.411041] Dumping ftrace buffer: [ 17.414557] (ftrace buffer empty) [ 17.418234] Kernel Offset: disabled [ 17.421826] Rebooting in 86400 seconds..