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-5,10.128.0.53' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 44.227177] unexpected usercopy without slab whitelist from SCTPv6 offset 1648 size 11 [ 44.227251] ------------[ cut here ]------------ [ 44.229142] WARNING: CPU: 1 PID: 2994 at mm/slab.c:4434 __check_heap_object+0xbc/0xd0 [ 44.230396] Kernel panic - not syncing: panic_on_warn set ... [ 44.230396] [ 44.231395] CPU: 1 PID: 2994 Comm: syzkaller408738 Not tainted 4.14.0-rc7-next-20171103+ #38 [ 44.232521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.233761] Call Trace: [ 44.234121] dump_stack+0x194/0x257 [ 44.234614] ? arch_local_irq_restore+0x53/0x53 [ 44.235242] ? vsnprintf+0x1ed/0x1900 [ 44.235759] panic+0x1e4/0x41c [ 44.236192] ? refcount_error_report+0x214/0x214 [ 44.236825] ? show_regs_print_info+0x65/0x65 [ 44.237432] ? __warn+0x1a9/0x1e0 [ 44.237903] ? __check_heap_object+0xbc/0xd0 [ 44.238492] __warn+0x1c4/0x1e0 [ 44.238938] ? __check_heap_object+0xbc/0xd0 [ 44.239529] report_bug+0x211/0x2d0 [ 44.240026] fixup_bug+0x40/0x90 [ 44.240482] do_trap+0x260/0x390 [ 44.240943] do_error_trap+0x120/0x390 [ 44.241464] ? vprintk_emit+0x49b/0x590 [ 44.242038] ? do_trap+0x390/0x390 [ 44.242521] ? __check_heap_object+0xbc/0xd0 [ 44.243108] ? vprintk_emit+0x3ea/0x590 [ 44.243651] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.244301] do_invalid_op+0x1b/0x20 [ 44.244801] invalid_op+0x18/0x20 [ 44.245294] RIP: 0010:__check_heap_object+0xbc/0xd0 [ 44.245957] RSP: 0018:ffff8801ce0670d8 EFLAGS: 00010282 [ 44.246673] RAX: 000000000000004a RBX: 0000000000000000 RCX: 0000000000000000 [ 44.247626] RDX: 000000000000004a RSI: 1ffff10039c0cddb RDI: ffffed0039c0ce0f [ 44.254862] RBP: ffff8801ce0670e0 R08: 0000000000000001 R09: 0000000000000000 [ 44.262097] R10: ffff8801ceb0a500 R11: 0000000000000000 R12: ffffea00074a6c80 [ 44.269337] R13: ffff8801d29b26b0 R14: 000000000000000b R15: ffffea00074a6c80 [ 44.276597] ? __check_heap_object+0xbc/0xd0 [ 44.280977] __check_object_size+0x22c/0x4f0 [ 44.285358] ? lock_release+0xd70/0xd70 [ 44.289302] ? check_stack_object+0x140/0x140 [ 44.293765] ? __local_bh_enable_ip+0x9d/0x160 [ 44.298322] ? __might_sleep+0x95/0x190 [ 44.302273] sctp_getsockopt+0x2b90/0x70b0 [ 44.306477] ? do_raw_spin_trylock+0x190/0x190 [ 44.311036] ? sctp_getsockopt_peeloff_common+0x300/0x300 [ 44.316540] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 44.321530] ? pagevec_lru_move_fn+0x1a4/0x230 [ 44.326092] ? get_kernel_page+0x110/0x110 [ 44.330297] ? __lru_cache_add+0x2a4/0x410 [ 44.334503] ? __pagevec_lru_add+0x30/0x30 [ 44.338708] ? save_stack+0xa3/0xd0 [ 44.342305] ? check_noncircular+0x20/0x20 [ 44.346520] ? print_usage_bug+0x480/0x480 [ 44.350721] ? __handle_mm_fault+0x1827/0x39c0 [ 44.355275] ? lru_cache_add+0x1c7/0x3a0 [ 44.359305] ? get_mem_cgroup_from_mm+0x710/0x710 [ 44.364112] ? lru_cache_add_file+0x20/0x20 [ 44.368406] ? find_held_lock+0x39/0x1d0 [ 44.372444] ? lock_downgrade+0x990/0x990 [ 44.376562] ? lru_cache_add_active_or_unevictable+0x20e/0x540 [ 44.382505] ? pgtable_trans_huge_deposit+0x342/0x6d0 [ 44.387666] ? pudp_huge_clear_flush+0x1f0/0x1f0 [ 44.392389] ? do_raw_spin_trylock+0x190/0x190 [ 44.396937] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 44.402790] ? __might_sleep+0x95/0x190 [ 44.406734] ? _cond_resched+0x14/0x30 [ 44.410587] ? clear_huge_page+0x309/0x730 [ 44.414793] ? _raw_spin_unlock+0x22/0x30 [ 44.418907] ? do_huge_pmd_anonymous_page+0xb21/0x1b00 [ 44.424157] ? __thp_get_unmapped_area+0x130/0x130 [ 44.429049] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 44.434212] ? is_bpf_text_address+0xa4/0x120 [ 44.438673] ? kernel_text_address+0x102/0x140 [ 44.443222] ? __kernel_text_address+0xd/0x40 [ 44.447685] ? unwind_get_return_address+0x61/0xa0 [ 44.452597] ? save_stack+0xa3/0xd0 [ 44.456189] ? save_stack+0x43/0xd0 [ 44.459780] ? kasan_slab_alloc+0x12/0x20 [ 44.463893] ? selinux_file_alloc_security+0xae/0x190 [ 44.469047] ? security_file_alloc+0x6d/0xa0 [ 44.473421] ? get_empty_filp+0x189/0x4f0 [ 44.477536] ? alloc_file+0x26/0x3a0 [ 44.481215] ? sock_alloc_file+0x1fd/0x550 [ 44.485415] ? sock_map_fd+0x34/0x70 [ 44.489094] ? SyS_socket+0x125/0x200 [ 44.492862] ? check_noncircular+0x20/0x20 [ 44.497070] ? lock_downgrade+0x990/0x990 [ 44.501189] ? check_noncircular+0x20/0x20 [ 44.505394] ? __handle_mm_fault+0x587/0x39c0 [ 44.509861] ? __pmd_alloc+0x4e0/0x4e0 [ 44.513728] ? find_held_lock+0x39/0x1d0 [ 44.517767] ? lock_downgrade+0x990/0x990 [ 44.521905] ? handle_mm_fault+0x410/0x8d0 [ 44.526104] ? down_read_trylock+0xdb/0x170 [ 44.530394] ? __do_page_fault+0x32d/0xc90 [ 44.534595] ? __handle_mm_fault+0x39c0/0x39c0 [ 44.539142] ? vmacache_find+0x5f/0x280 [ 44.543081] ? vmacache_update+0xfe/0x130 [ 44.547200] ? __fget_light+0x29d/0x390 [ 44.551139] ? sock_has_perm+0x29c/0x400 [ 44.555168] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 44.560521] sock_common_getsockopt+0x95/0xd0 [ 44.564981] ? sock_common_getsockopt+0x95/0xd0 [ 44.569618] SyS_getsockopt+0x178/0x340 [ 44.573562] ? SyS_setsockopt+0x360/0x360 [ 44.577678] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 44.582491] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 44.587478] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 44.592207] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 44.596938] RIP: 0033:0x43fca9 [ 44.600094] RSP: 002b:00007fff12a2dfa8 EFLAGS: 00000203 ORIG_RAX: 0000000000000037 [ 44.607768] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fca9 [ 44.615002] RDX: 000000000000000b RSI: 0000000000000084 RDI: 0000000000000003 [ 44.622239] RBP: 0000000000000086 R08: 0000000020290000 R09: 0000000000000000 [ 44.629476] R10: 000000002099aff5 R11: 0000000000000203 R12: 0000000000401610 [ 44.636712] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 [ 44.644184] Dumping ftrace buffer: [ 44.647746] (ftrace buffer empty) [ 44.651427] Kernel Offset: disabled [ 44.655026] Rebooting in 86400 seconds..