executing program syzkaller login: [ 20.371304] unexpected usercopy without slab whitelist from SCTPv6 offset 1648 size 11 [ 20.371352] ------------[ cut here ]------------ [ 20.372998] WARNING: CPU: 0 PID: 3006 at mm/slab.c:4434 __check_heap_object+0xbc/0xd0 [ 20.374283] Kernel panic - not syncing: panic_on_warn set ... [ 20.374283] [ 20.375197] CPU: 0 PID: 3006 Comm: syzkaller021393 Not tainted 4.14.0-rc7-next-20171103+ #10 [ 20.376318] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 20.378254] Call Trace: [ 20.378595] dump_stack+0x194/0x257 [ 20.379056] ? arch_local_irq_restore+0x53/0x53 [ 20.379702] ? vsnprintf+0x1ed/0x1900 [ 20.380180] panic+0x1e4/0x41c [ 20.380607] ? refcount_error_report+0x214/0x214 [ 20.381209] ? show_regs_print_info+0x65/0x65 [ 20.381773] ? __warn+0x1a9/0x1e0 [ 20.382184] ? __check_heap_object+0xbc/0xd0 [ 20.382739] __warn+0x1c4/0x1e0 [ 20.383145] ? __check_heap_object+0xbc/0xd0 [ 20.383675] report_bug+0x211/0x2d0 [ 20.384166] fixup_bug+0x40/0x90 [ 20.384618] do_trap+0x260/0x390 [ 20.385075] do_error_trap+0x120/0x390 [ 20.385716] ? vprintk_emit+0x49b/0x590 [ 20.386275] ? do_trap+0x390/0x390 [ 20.386712] ? __check_heap_object+0xbc/0xd0 [ 20.387262] ? vprintk_emit+0x3ea/0x590 [ 20.387758] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 20.388405] do_invalid_op+0x1b/0x20 [ 20.388893] invalid_op+0x18/0x20 [ 20.389523] RIP: 0010:__check_heap_object+0xbc/0xd0 [ 20.390183] RSP: 0018:ffff8800688370d8 EFLAGS: 00010282 [ 20.390868] RAX: 000000000000004a RBX: 0000000000000000 RCX: 0000000000000000 [ 20.391810] RDX: 000000000000004a RSI: 1ffff1000d106ddb RDI: ffffed000d106e0f [ 20.392711] RBP: ffff8800688370e0 R08: 0000000000000001 R09: 0000000000000000 [ 20.393690] R10: ffff88006b0745c0 R11: 0000000000000000 R12: ffffea0000e9f300 [ 20.394673] R13: ffff88003a7cd730 R14: 000000000000000b R15: ffffea0000e9f300 [ 20.395588] ? __check_heap_object+0xbc/0xd0 [ 20.396126] __check_object_size+0x22c/0x4f0 [ 20.396678] ? lock_release+0xd70/0xd70 [ 20.397185] ? check_stack_object+0x140/0x140 [ 20.398099] ? __local_bh_enable_ip+0x9d/0x160 [ 20.398711] ? __might_sleep+0x95/0x190 [ 20.399257] sctp_getsockopt+0x2b90/0x70b0 [ 20.399862] ? do_raw_spin_trylock+0x190/0x190 [ 20.400484] ? mark_held_locks+0xb2/0x100 [ 20.401055] ? sctp_getsockopt_peeloff_common+0x300/0x300 [ 20.401804] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 20.402473] ? pagevec_lru_move_fn+0x1a4/0x230 [ 20.403078] ? get_kernel_page+0x110/0x110 [ 20.403643] ? __lru_cache_add+0x2a4/0x410 [ 20.404206] ? __pagevec_lru_add+0x30/0x30 [ 20.404765] ? save_stack+0xa3/0xd0 [ 20.405253] ? check_noncircular+0x20/0x20 [ 20.405801] ? print_usage_bug+0x480/0x480 [ 20.406350] ? __handle_mm_fault+0x1827/0x39c0 [ 20.406975] ? lru_cache_add+0x1c7/0x3a0 [ 20.407387] ? get_mem_cgroup_from_mm+0x710/0x710 [ 20.407848] ? lru_cache_add_file+0x20/0x20 [ 20.408318] ? find_held_lock+0x39/0x1d0 [ 20.408763] ? lock_downgrade+0x990/0x990 [ 20.409236] ? lru_cache_add_active_or_unevictable+0x20e/0x540 [ 20.409833] ? pgtable_trans_huge_deposit+0x342/0x6d0 [ 20.410361] ? pudp_huge_clear_flush+0x1f0/0x1f0 [ 20.410825] ? do_raw_spin_trylock+0x190/0x190 [ 20.411243] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 20.411762] ? __might_sleep+0x95/0x190 [ 20.412126] ? _cond_resched+0x14/0x30 [ 20.412471] ? clear_huge_page+0x309/0x730 [ 20.412849] ? _raw_spin_unlock+0x22/0x30 [ 20.413336] ? do_huge_pmd_anonymous_page+0xb21/0x1b00 [ 20.413903] ? __thp_get_unmapped_area+0x130/0x130 [ 20.414339] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 20.414791] ? is_bpf_text_address+0xa4/0x120 [ 20.415190] ? kernel_text_address+0x102/0x140 [ 20.415586] ? __kernel_text_address+0xd/0x40 [ 20.415979] ? unwind_get_return_address+0x61/0xa0 [ 20.416493] ? __save_stack_trace+0x7e/0xd0 [ 20.418200] ? depot_save_stack+0x12c/0x490 [ 20.418749] ? save_stack+0xa3/0xd0 [ 20.419210] ? kasan_kmalloc+0xad/0xe0 [ 20.419694] ? kasan_slab_alloc+0x12/0x20 [ 20.420211] ? kmem_cache_alloc+0x12e/0x760 [ 20.420767] ? selinux_file_alloc_security+0xae/0x190 [ 20.421521] ? security_file_alloc+0x6d/0xa0 [ 20.422069] ? get_empty_filp+0x189/0x4f0 [ 20.422460] ? alloc_file+0x26/0x3a0 [ 20.422791] ? check_noncircular+0x20/0x20 [ 20.423175] ? entry_SYSCALL_64_fastpath+0x1f/0xbe [ 20.423641] ? lock_downgrade+0x990/0x990 [ 20.424012] ? check_noncircular+0x20/0x20 [ 20.424411] ? __handle_mm_fault+0x587/0x39c0 [ 20.424809] ? __pmd_alloc+0x4e0/0x4e0 [ 20.425198] ? find_held_lock+0x39/0x1d0 [ 20.425641] ? lock_downgrade+0x990/0x990 [ 20.426149] ? handle_mm_fault+0x410/0x8d0 [ 20.426616] ? down_read_trylock+0xdb/0x170 [ 20.427021] ? __do_page_fault+0x32d/0xc90 [ 20.427429] ? __handle_mm_fault+0x39c0/0x39c0 [ 20.427845] ? vmacache_find+0x5f/0x280 [ 20.428216] ? vmacache_update+0xfe/0x130 [ 20.428608] ? __fget_light+0x29d/0x390 [ 20.428968] ? sock_has_perm+0x29c/0x400 [ 20.429503] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 20.430061] sock_common_getsockopt+0x95/0xd0 [ 20.430495] ? sock_common_getsockopt+0x95/0xd0 [ 20.430925] SyS_getsockopt+0x178/0x340 [ 20.431315] ? SyS_setsockopt+0x360/0x360 [ 20.431695] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 20.432143] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 20.432608] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 20.433068] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 20.433798] RIP: 0033:0x434e59 [ 20.434195] RSP: 002b:00007ffd220bae58 EFLAGS: 00000203 ORIG_RAX: 0000000000000037 [ 20.435150] RAX: ffffffffffffffda RBX: 00000000004002b0 RCX: 0000000000434e59 [ 20.435901] RDX: 000000000000000b RSI: 0000000000000084 RDI: 0000000000000003 [ 20.436668] RBP: 0000000000000086 R08: 0000000020673000 R09: 0000000000000000 [ 20.437891] R10: 0000000020cd1000 R11: 0000000000000203 R12: 0000000000000000 [ 20.439133] R13: 00000000004017d0 R14: 0000000000401860 R15: 0000000000000000 [ 20.441399] Dumping ftrace buffer: [ 20.441937] (ftrace buffer empty) [ 20.442409] Kernel Offset: disabled [ 20.442869] Rebooting in 86400 seconds..