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-6,10.128.15.203' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 41.478893] unexpected usercopy without slab whitelist from SCTPv6 offset 1648 size 11 [ 41.478958] ------------[ cut here ]------------ [ 41.480825] WARNING: CPU: 1 PID: 3011 at mm/slab.c:4434 __check_heap_object+0xbc/0xd0 [ 41.482028] Kernel panic - not syncing: panic_on_warn set ... [ 41.482028] [ 41.483017] CPU: 1 PID: 3011 Comm: syzkaller186406 Not tainted 4.14.0-rc7-next-20171103+ #38 [ 41.484151] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.485393] Call Trace: [ 41.485752] dump_stack+0x194/0x257 [ 41.486246] ? arch_local_irq_restore+0x53/0x53 [ 41.486875] ? vsnprintf+0x1ed/0x1900 [ 41.487392] panic+0x1e4/0x41c [ 41.487826] ? refcount_error_report+0x214/0x214 [ 41.488476] ? show_regs_print_info+0x65/0x65 [ 41.489085] ? __warn+0x1a9/0x1e0 [ 41.489556] ? __check_heap_object+0xbc/0xd0 [ 41.490149] __warn+0x1c4/0x1e0 [ 41.490593] ? __check_heap_object+0xbc/0xd0 [ 41.491185] report_bug+0x211/0x2d0 [ 41.491682] fixup_bug+0x40/0x90 [ 41.492142] do_trap+0x260/0x390 [ 41.492622] do_error_trap+0x120/0x390 [ 41.493146] ? vprintk_emit+0x49b/0x590 [ 41.493683] ? do_trap+0x390/0x390 [ 41.494162] ? __check_heap_object+0xbc/0xd0 [ 41.494763] ? vprintk_emit+0x3ea/0x590 [ 41.495304] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.495954] do_invalid_op+0x1b/0x20 [ 41.496454] invalid_op+0x18/0x20 [ 41.496921] RIP: 0010:__check_heap_object+0xbc/0xd0 [ 41.497612] RSP: 0018:ffff8801cdcbf0d8 EFLAGS: 00010282 [ 41.498323] RAX: 000000000000004a RBX: 0000000000000000 RCX: 0000000000000000 [ 41.500699] RDX: 000000000000004a RSI: 1ffff10039b97ddb RDI: ffffed0039b97e0f [ 41.507936] RBP: ffff8801cdcbf0e0 R08: 0000000000000001 R09: 0000000000000000 [ 41.515173] R10: ffff8801cf048300 R11: 0000000000000000 R12: ffffea00074a6880 [ 41.522419] R13: ffff8801d29a26b0 R14: 000000000000000b R15: ffffea00074a6880 [ 41.529686] ? __check_heap_object+0xbc/0xd0 [ 41.534063] __check_object_size+0x22c/0x4f0 [ 41.538438] ? lock_release+0xd70/0xd70 [ 41.542384] ? check_stack_object+0x140/0x140 [ 41.546846] ? __local_bh_enable_ip+0x9d/0x160 [ 41.551399] ? __might_sleep+0x95/0x190 [ 41.555351] sctp_getsockopt+0x2b90/0x70b0 [ 41.559558] ? do_raw_spin_trylock+0x190/0x190 [ 41.564118] ? sctp_getsockopt_peeloff_common+0x300/0x300 [ 41.569627] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 41.574619] ? pagevec_lru_move_fn+0x1a4/0x230 [ 41.579169] ? get_kernel_page+0x110/0x110 [ 41.583376] ? __lru_cache_add+0x2a4/0x410 [ 41.587582] ? __pagevec_lru_add+0x30/0x30 [ 41.591792] ? save_stack+0xa3/0xd0 [ 41.595390] ? check_noncircular+0x20/0x20 [ 41.599591] ? print_usage_bug+0x480/0x480 [ 41.603795] ? __handle_mm_fault+0x1827/0x39c0 [ 41.608354] ? lru_cache_add+0x1c7/0x3a0 [ 41.612383] ? get_mem_cgroup_from_mm+0x710/0x710 [ 41.617193] ? lru_cache_add_file+0x20/0x20 [ 41.621489] ? find_held_lock+0x39/0x1d0 [ 41.625530] ? lock_downgrade+0x990/0x990 [ 41.629650] ? lru_cache_add_active_or_unevictable+0x20e/0x540 [ 41.635593] ? pgtable_trans_huge_deposit+0x342/0x6d0 [ 41.640752] ? pudp_huge_clear_flush+0x1f0/0x1f0 [ 41.645476] ? do_raw_spin_trylock+0x190/0x190 [ 41.650024] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 41.655887] ? _cond_resched+0x14/0x30 [ 41.659739] ? clear_huge_page+0x309/0x730 [ 41.663944] ? _raw_spin_unlock+0x22/0x30 [ 41.668059] ? do_huge_pmd_anonymous_page+0xb21/0x1b00 [ 41.673310] ? __thp_get_unmapped_area+0x130/0x130 [ 41.678206] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 41.683369] ? is_bpf_text_address+0xa4/0x120 [ 41.687834] ? kernel_text_address+0x102/0x140 [ 41.692385] ? __kernel_text_address+0xd/0x40 [ 41.696851] ? unwind_get_return_address+0x61/0xa0 [ 41.701764] ? save_stack+0xa3/0xd0 [ 41.705357] ? save_stack+0x43/0xd0 [ 41.708951] ? kasan_slab_alloc+0x12/0x20 [ 41.713065] ? selinux_file_alloc_security+0xae/0x190 [ 41.718218] ? security_file_alloc+0x6d/0xa0 [ 41.722594] ? get_empty_filp+0x189/0x4f0 [ 41.726713] ? alloc_file+0x26/0x3a0 [ 41.730394] ? sock_alloc_file+0x1fd/0x550 [ 41.734592] ? sock_map_fd+0x34/0x70 [ 41.738271] ? SyS_socket+0x125/0x200 [ 41.742039] ? check_noncircular+0x20/0x20 [ 41.746246] ? lock_downgrade+0x990/0x990 [ 41.750366] ? check_noncircular+0x20/0x20 [ 41.754571] ? __handle_mm_fault+0x587/0x39c0 [ 41.759042] ? __pmd_alloc+0x4e0/0x4e0 [ 41.762906] ? find_held_lock+0x39/0x1d0 [ 41.766949] ? lock_downgrade+0x990/0x990 [ 41.771090] ? handle_mm_fault+0x410/0x8d0 [ 41.775291] ? down_read_trylock+0xdb/0x170 [ 41.779580] ? __do_page_fault+0x32d/0xc90 [ 41.783783] ? __handle_mm_fault+0x39c0/0x39c0 [ 41.788330] ? vmacache_find+0x5f/0x280 [ 41.792270] ? vmacache_update+0xfe/0x130 [ 41.796390] ? __fget_light+0x29d/0x390 [ 41.800331] ? sock_has_perm+0x29c/0x400 [ 41.804364] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 41.809718] sock_common_getsockopt+0x95/0xd0 [ 41.814182] ? sock_common_getsockopt+0x95/0xd0 [ 41.818822] SyS_getsockopt+0x178/0x340 [ 41.822770] ? SyS_setsockopt+0x360/0x360 [ 41.826888] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 41.831699] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 41.836683] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 41.841413] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 41.846134] RIP: 0033:0x43fc99 [ 41.849290] RSP: 002b:00007ffec2fb00c8 EFLAGS: 00000203 ORIG_RAX: 0000000000000037 [ 41.856966] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fc99 [ 41.864204] RDX: 000000000000000b RSI: 0000000000000084 RDI: 0000000000000003 [ 41.871443] RBP: 0000000000000086 R08: 0000000020673000 R09: 0000000000000000 [ 41.878681] R10: 0000000020cd1000 R11: 0000000000000203 R12: 0000000000401600 [ 41.885918] R13: 0000000000401690 R14: 0000000000000000 R15: 0000000000000000 [ 41.893340] Dumping ftrace buffer: [ 41.896912] (ftrace buffer empty) [ 41.900593] Kernel Offset: disabled [ 41.904192] Rebooting in 86400 seconds..