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-2,10.128.0.42' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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: [ 51.226730] kasan: CONFIG_KASAN_INLINE enabled [ 51.231424] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 51.239046] general protection fault: 0000 [#1] SMP KASAN [ 51.244563] Dumping ftrace buffer: [ 51.248071] (ftrace buffer empty) [ 51.251747] Modules linked in: [ 51.254912] CPU: 1 PID: 14201 Comm: syzkaller603818 Not tainted 4.13.0-mm1+ #7 [ 51.262235] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.271557] task: ffff8801cb5d85c0 task.stack: ffff8801c0ab0000 [ 51.277584] RIP: 0010:__list_add_valid+0x46/0xd0 [ 51.282302] RSP: 0018:ffff8801c0ab7490 EFLAGS: 00010246 [ 51.287631] RAX: dffffc0000000000 RBX: ffff8801cba70f68 RCX: 0000000000000000 [ 51.294867] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801cba70f70 [ 51.302101] RBP: ffff8801c0ab74a8 R08: 0000000000000000 R09: 1ffff10038156df4 [ 51.309338] R10: 00000000ba948ded R11: 00000000ac8ff476 R12: ffff8801dadae340 [ 51.316573] R13: ffff8801d483db00 R14: ffff8801cba70f68 R15: 0000000000000000 [ 51.323809] FS: 00007f597a2b4700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 51.331999] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.337850] CR2: 0000000020eb1000 CR3: 00000001d1077000 CR4: 00000000001406e0 [ 51.345089] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.352324] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.359559] Call Trace: [ 51.362114] sock_map_ctx_update_elem.isra.11+0x9e9/0x1a00 [ 51.367709] ? sock_map_free+0x870/0x870 [ 51.371737] ? lock_downgrade+0x990/0x990 [ 51.375857] ? __fget+0xbb/0x580 [ 51.379194] ? lock_release+0xd70/0xd70 [ 51.383144] ? __fget+0x362/0x580 [ 51.386566] ? iterate_fd+0x3f0/0x3f0 [ 51.390343] ? retint_kernel+0x10/0x10 [ 51.394200] ? fget+0x18/0x20 [ 51.397273] sock_map_update_elem+0x145/0x2d0 [ 51.401735] ? bpf_sock_map_update+0x50/0x50 [ 51.406115] ? rcutorture_record_progress+0x10/0x10 [ 51.411096] ? copy_user_generic_unrolled+0x9e/0xc0 [ 51.416082] ? bpf_sock_map_update+0x50/0x50 [ 51.420460] SyS_bpf+0x2012/0x46a0 [ 51.423969] ? bpf_prog_get+0x20/0x20 [ 51.427736] ? do_raw_spin_trylock+0x190/0x190 [ 51.432295] ? check_noncircular+0x20/0x20 [ 51.436498] ? _raw_spin_unlock+0x22/0x30 [ 51.440610] ? __handle_mm_fault+0x587/0x39c0 [ 51.445073] ? __pmd_alloc+0x4e0/0x4e0 [ 51.448933] ? find_held_lock+0x39/0x1d0 [ 51.452968] ? lock_downgrade+0x990/0x990 [ 51.457096] ? handle_mm_fault+0x410/0x8d0 [ 51.461298] ? down_read_trylock+0xdb/0x170 [ 51.465588] ? __do_page_fault+0x2b8/0xb60 [ 51.469790] ? __handle_mm_fault+0x39c0/0x39c0 [ 51.474339] ? vmacache_find+0x61/0x270 [ 51.478285] ? up_read+0x1a/0x40 [ 51.481619] ? __do_page_fault+0x35b/0xb60 [ 51.485823] ? do_page_fault+0xee/0x720 [ 51.489764] ? _raw_spin_unlock_irq+0x27/0x70 [ 51.494225] ? __do_page_fault+0xb60/0xb60 [ 51.498425] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 51.503408] ? lockdep_sys_exit+0x47/0xf0 [ 51.507523] ? syscall_return_slowpath+0x2b3/0x500 [ 51.512417] ? finish_task_switch+0x1aa/0x740 [ 51.516881] ? lockdep_sys_exit+0x47/0xf0 [ 51.520996] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 51.525809] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 51.530535] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 51.535257] RIP: 0033:0x445cb9 [ 51.538416] RSP: 002b:00007f597a2b3dc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000141 [ 51.546091] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445cb9 [ 51.553326] RDX: 0000000000000020 RSI: 00000000204eefe0 RDI: 0000000000000002 [ 51.560560] RBP: 0000000000000082 R08: 00007f597a2b4700 R09: 00007f597a2b4700 [ 51.567795] R10: 00007f597a2b4700 R11: 0000000000000202 R12: 0000000000000000 [ 51.575032] R13: 00007fffac27244f R14: 00007f597a2b49c0 R15: 0000000000000000 [ 51.582275] Code: 48 89 fa 48 83 ec 08 48 c1 ea 03 80 3c 02 00 75 7c 48 8b 53 08 48 39 f2 75 37 48 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 75 6e 48 8b 16 48 39 da 75 29 49 39 f4 74 38 49 39 [ 51.601363] RIP: __list_add_valid+0x46/0xd0 RSP: ffff8801c0ab7490 [ 51.607608] ---[ end trace f5e05d4824bbc3cc ]--- [ 51.612348] Kernel panic - not syncing: Fatal exception in interrupt [ 51.619176] Dumping ftrace buffer: [ 51.622686] (ftrace buffer empty) [ 51.626361] Kernel Offset: disabled [ 51.629952] Rebooting in 86400 seconds..