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kernel BUG at mm/slab.c:4407!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 4461 Comm: syz-executor0 Not tainted 4.16.0-rc7+ #280
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__check_heap_object+0xa7/0xc0 mm/slab.c:4432
RSP: 0018:ffff8801d95e7ad0 EFLAGS: 00010297
RAX: 00000000000f0f0e RBX: 1ffff1003b2bcf61 RCX: 000000000000000c
RDX: ffff8801aa988dc0 RSI: 0000000000000fe4 RDI: ffff8801aa988a1c
RBP: ffff8801d95e7ad0 R08: 0000000000000000 R09: ffff8801da5da600
R10: 00000000e1e1deab R11: 0000000000000000 R12: ffff8801aa988a1c
R13: 0000000000000fe4 R14: ffffea0006aa6200 R15: ffffea0006aa6200
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008f89900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000087b71d4 CR3: 00000001ba8bb001 CR4: 00000000001606e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 check_heap_object mm/usercopy.c:236 [inline]
 __check_object_size+0x272/0x530 mm/usercopy.c:259
 check_object_size include/linux/thread_info.h:112 [inline]
 strncpy_from_user+0xf4/0x430 lib/strncpy_from_user.c:116
 getname_flags+0x10e/0x580 fs/namei.c:149
 getname fs/namei.c:209 [inline]
 user_path_create fs/namei.c:3683 [inline]
 SYSC_mkdirat fs/namei.c:3815 [inline]
 SyS_mkdirat fs/namei.c:3807 [inline]
 SYSC_mkdir fs/namei.c:3834 [inline]
 SyS_mkdir+0xc1/0x2a0 fs/namei.c:3832
 do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
 do_fast_syscall_32+0x3ec/0xf9f arch/x86/entry/common.c:392
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f59c99
RSP: 002b:000000000844eb0c EFLAGS: 00000206 ORIG_RAX: 0000000000000027
RAX: ffffffffffffffda RBX: 000000000844f7ec RCX: 00000000000001ff
RDX: 000000000844eb60 RSI: 0000000000000013 RDI: 000000000844f7ec
RBP: 00000000000001ff R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Code: 2c 48 c7 c7 64 1f 76 87 e8 47 cc 07 00 5d c3 49 8b 91 08 01 00 00 48 29 c7 48 39 d7 77 be 48 01 d0 48 29 c8 48 39 f0 72 b3 5d c3 <0f> 0b 48 c7 c7 64 1f 76 87 e8 1b cd 07 00 90 90 90 90 90 90 90 
RIP: __check_heap_object+0xa7/0xc0 mm/slab.c:4432 RSP: ffff8801d95e7ad0
---[ end trace d341197a847a99cc ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..