general protection fault: 0000 [#1] SMP PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 8719 Comm: syz-executor4 Not tainted 4.16.0+ #87
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:freelist_dereference mm/slub.c:264 [inline]
RIP: 0010:get_freepointer mm/slub.c:270 [inline]
RIP: 0010:get_freepointer_safe mm/slub.c:285 [inline]
RIP: 0010:slab_alloc_node mm/slub.c:2706 [inline]
RIP: 0010:slab_alloc mm/slub.c:2745 [inline]
RIP: 0010:__kmalloc_track_caller+0x667/0xcb0 mm/slub.c:4339
RSP: 0018:ffff88014ae0fa98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 6f7267637a79732f RCX: 0000000000000000
RDX: ffff88021f0099a0 RSI: 6f7267637a79732f RDI: ffffea0000000000
RBP: ffff88014ae0fb78 R08: 0000000001080020 R09: 0000000000000002
R10: 0000000000000000 R11: ffff88014ae00000 R12: 0000000000000000
R13: 6f7267637a79732f R14: ffff88014acaa698 R15: 0000000000000000
FS:  0000000001612940(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004badea CR3: 000000014d2a2000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kmemdup+0x95/0x140 mm/util.c:118
 shmem_symlink+0x3bc/0xbb0 mm/shmem.c:3260
 vfs_symlink+0x635/0x850 fs/namei.c:4105
 SYSC_symlinkat+0x374/0x840 fs/namei.c:4132
 SyS_symlinkat+0x55/0x80 fs/namei.c:4112
 SYSC_symlink+0x74/0x90 fs/namei.c:4145
 SyS_symlink+0x46/0x70 fs/namei.c:4143
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x4556a7
RSP: 002b:0000000000a3eab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 0000000000000043 RCX: 00000000004556a7
RDX: 0000000000000000 RSI: 00000000004badf3 RDI: 0000000000a3f7f0
RBP: 0000000000000013 R08: 0000000000000000 R09: 0000000001612940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000001380
Code: ff ff 48 8b bd 58 ff ff ff 4c 63 2f e8 23 15 02 00 48 63 00 48 8b 75 b0 49 01 f5 4c 89 e1 48 09 c1 0f 85 7a fe ff ff 4c 89 65 a0 <49> 8b 5d 00 4c 89 ef e8 3d 15 02 00 4c 8b 20 8b 02 89 45 8c 4d 
RIP: freelist_dereference mm/slub.c:264 [inline] RSP: ffff88014ae0fa98
RIP: get_freepointer mm/slub.c:270 [inline] RSP: ffff88014ae0fa98
RIP: get_freepointer_safe mm/slub.c:285 [inline] RSP: ffff88014ae0fa98
RIP: slab_alloc_node mm/slub.c:2706 [inline] RSP: ffff88014ae0fa98
RIP: slab_alloc mm/slub.c:2745 [inline] RSP: ffff88014ae0fa98
RIP: __kmalloc_track_caller+0x667/0xcb0 mm/slub.c:4339 RSP: ffff88014ae0fa98
---[ end trace 8dc9fb0845fb7f8b ]---