------------[ cut here ]------------ kernel BUG at mm/slab.c:4427! overlayfs: fs on 'file0' does not support file handles, falling back to index=off. invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 32426 Comm: syz-executor.3 Not tainted 4.14.176-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88804f16c5c0 task.stack: ffff888213758000 RIP: 0010:__check_heap_object+0x58/0x5a mm/slab.c:4427 RSP: 0018:ffff88821375fbe8 EFLAGS: 00010293 RAX: 00000000000f0f0f RBX: 0000000000000711 RCX: 000000000000000c RDX: 00000000e1e1e1df RSI: 0000000000000711 RDI: ffff8880907a887d RBP: 0000000000000001 R08: ffff88812fe56dc0 R09: ffff8880907a8880 R10: ffff88821fff7010 R11: 0000000000000001 R12: ffff8880907a887d R13: ffffea000241ea00 R14: ffff8880907a8f8e R15: ffffea000241ea00 FS: 00007f1501097700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30d24000 CR3: 0000000094023000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: check_heap_object mm/usercopy.c:216 [inline] __check_object_size mm/usercopy.c:242 [inline] __check_object_size+0x148/0x28a mm/usercopy.c:228 check_object_size include/linux/thread_info.h:108 [inline] check_copy_size include/linux/thread_info.h:139 [inline] copy_to_user include/linux/uaccess.h:154 [inline] bpf_test_finish.isra.0+0x89/0x140 net/bpf/test_run.c:59 bpf_prog_test_run_skb+0x584/0x960 net/bpf/test_run.c:144 bpf_prog_test_run kernel/bpf/syscall.c:1264 [inline] SYSC_bpf kernel/bpf/syscall.c:1529 [inline] SyS_bpf+0xd7a/0x2cd3 kernel/bpf/syscall.c:1477 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c889 RSP: 002b:00007f1501096c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f15010976d4 RCX: 000000000045c889 RDX: 0000000000000040 RSI: 00000000200007c0 RDI: 000000000000000a RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000005b R14: 00000000004c2fd8 R15: 000000000076bf0c Code: e8 41 39 40 24 76 24 41 0f af 40 14 4c 01 c8 48 29 c7 49 63 40 74 48 39 f8 72 08 48 29 f8 48 39 f0 73 05 49 8b 40 58 c3 31 c0 c3 <0f> 0b 89 e9 48 c7 c7 90 f5 8d 87 89 74 24 0c 4c 8d 44 24 04 81 RIP: __check_heap_object+0x58/0x5a mm/slab.c:4427 RSP: ffff88821375fbe8 ---[ end trace 3aa79c078db40a30 ]---