executing program syzkaller login: [ 16.343744] unexpected usercopy without slab whitelist from SCTPv6 offset 1648 size 11 [ 16.343808] ------------[ cut here ]------------ [ 16.346112] WARNING: CPU: 2 PID: 2983 at mm/slab.c:4434 __check_heap_object+0xbc/0xd0 [ 16.347176] Kernel panic - not syncing: panic_on_warn set ... [ 16.347176] [ 16.348141] CPU: 2 PID: 2983 Comm: syzkaller098571 Not tainted 4.14.0-rc7-next-20171103+ #10 [ 16.349243] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 16.350336] Call Trace: [ 16.350619] dump_stack+0x194/0x257 [ 16.351010] ? arch_local_irq_restore+0x53/0x53 [ 16.351589] ? vsnprintf+0x1ed/0x1900 [ 16.352103] panic+0x1e4/0x41c [ 16.352519] ? refcount_error_report+0x214/0x214 [ 16.353161] ? show_regs_print_info+0x65/0x65 [ 16.353747] ? __warn+0x1a9/0x1e0 [ 16.354280] ? __check_heap_object+0xbc/0xd0 [ 16.354868] __warn+0x1c4/0x1e0 [ 16.355311] ? __check_heap_object+0xbc/0xd0 [ 16.355875] report_bug+0x211/0x2d0 [ 16.356372] fixup_bug+0x40/0x90 [ 16.356814] do_trap+0x260/0x390 [ 16.357273] do_error_trap+0x120/0x390 [ 16.357788] ? vprintk_emit+0x49b/0x590 [ 16.358381] ? do_trap+0x390/0x390 [ 16.358844] ? __check_heap_object+0xbc/0xd0 [ 16.359426] ? vprintk_emit+0x3ea/0x590 [ 16.359959] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 16.360600] do_invalid_op+0x1b/0x20 [ 16.361071] invalid_op+0x18/0x20 [ 16.361530] RIP: 0010:__check_heap_object+0xbc/0xd0 [ 16.362259] RSP: 0018:ffff88003d0b70d8 EFLAGS: 00010282 [ 16.362974] RAX: 000000000000004a RBX: 0000000000000000 RCX: 0000000000000000 [ 16.363906] RDX: 000000000000004a RSI: 1ffff10007a16ddb RDI: ffffed0007a16e0f [ 16.364843] RBP: ffff88003d0b70e0 R08: 0000000000000001 R09: 0000000000000000 [ 16.365779] R10: ffff88003b120180 R11: 0000000000000000 R12: ffffea0001a8d800 [ 16.366782] R13: ffff88006a361730 R14: 000000000000000b R15: ffffea0001a8d800 [ 16.367747] ? __check_heap_object+0xbc/0xd0 [ 16.368326] __check_object_size+0x22c/0x4f0 [ 16.368899] ? lock_release+0xd70/0xd70 [ 16.369425] ? check_stack_object+0x140/0x140 [ 16.370389] ? __local_bh_enable_ip+0x9d/0x160 [ 16.371014] ? __might_sleep+0x95/0x190 [ 16.371565] sctp_getsockopt+0x2b90/0x70b0 [ 16.372112] ? do_raw_spin_trylock+0x190/0x190 [ 16.372715] ? mark_held_locks+0xb2/0x100 [ 16.373277] ? sctp_getsockopt_peeloff_common+0x300/0x300 [ 16.374073] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 16.374765] ? pagevec_lru_move_fn+0x1a4/0x230 [ 16.375381] ? get_kernel_page+0x110/0x110 [ 16.375948] ? __lru_cache_add+0x2a4/0x410 [ 16.376510] ? __pagevec_lru_add+0x30/0x30 [ 16.377080] ? save_stack+0xa3/0xd0 [ 16.377569] ? check_noncircular+0x20/0x20 [ 16.378176] ? print_usage_bug+0x480/0x480 [ 16.378707] ? __handle_mm_fault+0x1827/0x39c0 [ 16.379328] ? lru_cache_add+0x1c7/0x3a0 [ 16.379835] ? get_mem_cgroup_from_mm+0x710/0x710 [ 16.380437] ? lru_cache_add_file+0x20/0x20 [ 16.380999] ? find_held_lock+0x39/0x1d0 [ 16.381540] ? lock_downgrade+0x990/0x990 [ 16.382355] ? lru_cache_add_active_or_unevictable+0x20e/0x540 [ 16.382974] ? pgtable_trans_huge_deposit+0x342/0x6d0 [ 16.383542] ? pudp_huge_clear_flush+0x1f0/0x1f0 [ 16.384044] ? do_raw_spin_trylock+0x190/0x190 [ 16.384554] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 16.385331] ? __might_sleep+0x95/0x190 [ 16.385856] ? _cond_resched+0x14/0x30 [ 16.386406] ? clear_huge_page+0x309/0x730 [ 16.386952] ? _raw_spin_unlock+0x22/0x30 [ 16.387507] ? do_huge_pmd_anonymous_page+0xb21/0x1b00 [ 16.388218] ? __thp_get_unmapped_area+0x130/0x130 [ 16.388866] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 16.389565] ? is_bpf_text_address+0xa4/0x120 [ 16.390227] ? kernel_text_address+0x102/0x140 [ 16.390814] ? __kernel_text_address+0xd/0x40 [ 16.391383] ? unwind_get_return_address+0x61/0xa0 [ 16.391979] ? __save_stack_trace+0x7e/0xd0 [ 16.392508] ? depot_save_stack+0x12c/0x490 [ 16.393037] ? save_stack+0xa3/0xd0 [ 16.393486] ? kasan_kmalloc+0xad/0xe0 [ 16.394023] ? kasan_slab_alloc+0x12/0x20 [ 16.394586] ? kmem_cache_alloc+0x12e/0x760 [ 16.395111] ? selinux_file_alloc_security+0xae/0x190 [ 16.395791] ? security_file_alloc+0x6d/0xa0 [ 16.396317] ? get_empty_filp+0x189/0x4f0 [ 16.396797] ? alloc_file+0x26/0x3a0 [ 16.397235] ? check_noncircular+0x20/0x20 [ 16.397724] ? entry_SYSCALL_64_fastpath+0x1f/0xbe [ 16.398395] ? lock_downgrade+0x990/0x990 [ 16.398961] ? check_noncircular+0x20/0x20 [ 16.399538] ? __handle_mm_fault+0x587/0x39c0 [ 16.400151] ? __pmd_alloc+0x4e0/0x4e0 [ 16.400664] ? find_held_lock+0x39/0x1d0 [ 16.401150] ? lock_downgrade+0x990/0x990 [ 16.401693] ? handle_mm_fault+0x410/0x8d0 [ 16.402318] ? down_read_trylock+0xdb/0x170 [ 16.403107] ? __do_page_fault+0x32d/0xc90 [ 16.403609] ? __handle_mm_fault+0x39c0/0x39c0 [ 16.404139] ? vmacache_find+0x5f/0x280 [ 16.404606] ? vmacache_update+0xfe/0x130 [ 16.405096] ? __fget_light+0x29d/0x390 [ 16.405564] ? sock_has_perm+0x29c/0x400 [ 16.406082] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 16.406819] sock_common_getsockopt+0x95/0xd0 [ 16.407351] ? sock_common_getsockopt+0x95/0xd0 [ 16.407907] SyS_getsockopt+0x178/0x340 [ 16.408409] ? SyS_setsockopt+0x360/0x360 [ 16.408916] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 16.409510] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 16.410191] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 16.410852] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 16.411507] RIP: 0033:0x434e59 [ 16.411944] RSP: 002b:00007ffc1c0912a8 EFLAGS: 00000203 ORIG_RAX: 0000000000000037 [ 16.412995] RAX: ffffffffffffffda RBX: 00000000004002b0 RCX: 0000000000434e59 [ 16.413990] RDX: 000000000000000b RSI: 0000000000000084 RDI: 0000000000000003 [ 16.414859] RBP: 0000000000000086 R08: 0000000020290000 R09: 0000000000000000 [ 16.415723] R10: 000000002099aff5 R11: 0000000000000203 R12: 0000000000000000 [ 16.416589] R13: 00000000004017d0 R14: 0000000000401860 R15: 0000000000000000 [ 16.420035] Dumping ftrace buffer: [ 16.420648] (ftrace buffer empty) [ 16.421103] Kernel Offset: disabled [ 16.421541] Rebooting in 86400 seconds..