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-2,10.128.0.33' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 17.332935] kasan: CONFIG_KASAN_INLINE enabled [ 17.333697] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 17.334944] general protection fault: 0000 [#1] SMP KASAN [ 17.335729] Dumping ftrace buffer: [ 17.336215] (ftrace buffer empty) [ 17.336719] Modules linked in: [ 17.337155] CPU: 1 PID: 2994 Comm: syzkaller423302 Not tainted 4.14.0-rc7-next-20171103+ #38 [ 17.338303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 17.339522] task: ffff8801ce610600 task.stack: ffff8801ccd60000 [ 17.340343] RIP: 0010:asn1_ber_decoder+0x41e/0x1af0 [ 17.341033] RSP: 0018:ffff8801ccd678d0 EFLAGS: 00010246 [ 17.341757] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 17.342710] RDX: 0000000000000000 RSI: ffff8801ce4be300 RDI: ffffffff853f1920 [ 17.343664] RBP: ffff8801ccd67b88 R08: 0000000000000060 R09: 0000000000000000 [ 17.344656] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 17.345618] R13: 0000000000000000 R14: ffff8801ccd67b60 R15: dffffc0000000000 [ 17.346642] FS: 0000000001853880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 17.347718] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 17.348493] CR2: 0000000020000000 CR3: 00000001ce5e9000 CR4: 00000000001406e0 [ 17.349445] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 17.350406] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 17.351378] Call Trace: [ 17.351735] ? pkcs7_parse_message+0x18a/0x730 [ 17.352358] ? verify_pkcs7_signature+0x8d/0x290 [ 17.352988] ? pkcs7_preparse+0x7b/0xc0 [ 17.356499] ? depot_save_stack+0x490/0x490 [ 17.360787] ? __lock_is_held+0xbc/0x140 [ 17.364823] ? __lock_is_held+0xbc/0x140 [ 17.368853] ? pkcs7_parse_message+0x18a/0x730 [ 17.373401] ? rcu_read_lock_sched_held+0x108/0x120 [ 17.378385] ? kmem_cache_alloc_trace+0x459/0x750 [ 17.383196] ? lock_release+0xd70/0xd70 [ 17.387139] pkcs7_parse_message+0x2b3/0x730 [ 17.391513] ? key_task_permission+0x330/0x330 [ 17.396062] ? pkcs7_supply_detached_data+0x90/0x90 [ 17.401044] verify_pkcs7_signature+0x8d/0x290 [ 17.405593] ? restrict_link_by_builtin_and_secondary_trusted+0x80/0x80 [ 17.412313] ? __down_interruptible+0x6b0/0x6b0 [ 17.416960] ? trace_hardirqs_on+0xd/0x10 [ 17.421074] ? current_kernel_time64+0x1d4/0x2f0 [ 17.425799] ? pkcs7_supply_detached_data+0x90/0x90 [ 17.430783] pkcs7_preparse+0x7b/0xc0 [ 17.434549] ? pkcs7_preparse+0xc0/0xc0 [ 17.438490] key_create_or_update+0x533/0x1040 [ 17.443041] ? key_type_lookup+0xd0/0xd0 [ 17.447069] ? join_session_keyring+0x300/0x300 [ 17.451706] ? mem_cgroup_commit_charge+0x111/0x750 [ 17.456703] ? memdup_user+0x5e/0x90 [ 17.460387] SyS_add_key+0x18a/0x340 [ 17.464068] ? key_get_type_from_user.constprop.10+0xd0/0xd0 [ 17.469830] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 17.474817] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 17.479540] RIP: 0033:0x43fcd9 [ 17.482694] RSP: 002b:00007ffec7f88f98 EFLAGS: 00000217 ORIG_RAX: 00000000000000f8 [ 17.490379] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcd9 [ 17.497622] RDX: 0000000020000000 RSI: 0000000020000ffb RDI: 0000000020000000 [ 17.504858] RBP: 0000000000000086 R08: fffffffffffffffc R09: 0000000000000000 [ 17.512094] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401640 [ 17.519329] R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000 [ 17.526575] 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 [ 17.545656] RIP: asn1_ber_decoder+0x41e/0x1af0 RSP: ffff8801ccd678d0 [ 17.552173] ---[ end trace b2530eb5d3118009 ]--- [ 17.557040] Kernel panic - not syncing: Fatal exception [ 17.562825] Dumping ftrace buffer: [ 17.566854] (ftrace buffer empty) [ 17.570528] Kernel Offset: disabled [ 17.574123] Rebooting in 86400 seconds..