WARNING: CPU: 0 PID: 15255 at mm/slab_common.c:996 kmalloc_slab+0x56/0x70 mm/slab_common.c:996
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 15255 Comm: syz-executor7 Not tainted 4.17.0-rc3+ #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1b9/0x294 lib/dump_stack.c:113
 panic+0x22f/0x4de kernel/panic.c:184
 __warn.cold.8+0x163/0x1b3 kernel/panic.c:536
 report_bug+0x252/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1de/0x490 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992
RIP: 0010:kmalloc_slab+0x56/0x70 mm/slab_common.c:996
RSP: 0018:ffff8801977a7c28 EFLAGS: 00010246
RAX: 0000000000000000 RBX: fffffffffffffff4 RCX: ffffc900024ab000
RDX: ffffffff81862542 RSI: 0000000000000000 RDI: 00000000fffffffc
RBP: ffff8801977a7c28 R08: ffff8801b2bb8440 R09: ffffed003b5c46c2
R10: 0000000000000003 R11: 0000000000000000 R12: 00000000fffffffc
R13: 0000000020000000 R14: 00000000ffffffff R15: 00000000014200c0
 __do_kmalloc mm/slab.c:3713 [inline]
 __kmalloc_track_caller+0x21/0x760 mm/slab.c:3733
 memdup_user+0x2c/0xa0 mm/util.c:160
 map_lookup_elem+0x242/0x970 kernel/bpf/syscall.c:618
 __do_sys_bpf kernel/bpf/syscall.c:2122 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:2096 [inline]
 __x64_sys_bpf+0x315/0x4f0 kernel/bpf/syscall.c:2096
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455a09
RSP: 002b:00007f40b598dc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f40b598e6d4 RCX: 0000000000455a09
RDX: 0000000000000018 RSI: 0000000020000080 RDI: 0000000000000001
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000040 R14: 00000000006f46a0 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..