general protection fault: 0000 [#1] SMP PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 14950 Comm: syz-executor3 Not tainted 4.17.0+ #22
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:2722 [inline]
RIP: 0010:slab_alloc mm/slub.c:2761 [inline]
RIP: 0010:kmem_cache_alloc+0x49b/0xb70 mm/slub.c:2766
RSP: 0018:ffff88011ee0fa58 EFLAGS: 00010246
RAX: 0000000000000000 RBX: a3e0006fa3e0006f RCX: 0000000000000000
RDX: ffff88014bfd10a0 RSI: aaaaaaaaaaaab000 RDI: ffffea0007c7dae0
RBP: ffff88011ee0fb08 R08: 0000000001080020 R09: ffff88021fc39050
R10: ffffffff7fffffff R11: ffffffff81351e50 R12: 0000000000000000
R13: ffffe8ffffc56c90 R14: a3e0006fa3e0006f R15: ffff88014c53e0a0
FS:  00007fe48a349700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd49e71998 CR3: 0000000123b42000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 dup_mmap kernel/fork.c:450 [inline]
 dup_mm kernel/fork.c:1235 [inline]
 copy_mm kernel/fork.c:1289 [inline]
 copy_process+0x63ba/0x9c20 kernel/fork.c:1795
 _do_fork+0x353/0xf60 kernel/fork.c:2089
 __do_sys_clone kernel/fork.c:2196 [inline]
 __se_sys_clone kernel/fork.c:2190 [inline]
 __x64_sys_clone+0x15e/0x1b0 kernel/fork.c:2190
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x455e29
RSP: 002b:00007fe48a348c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fe48a3496d4 RCX: 0000000000455e29
RDX: 0000000020744000 RSI: 0000000020b6b000 RDI: 0000000000000200
RBP: 000000000072bea0 R08: 0000000020000140 R09: 0000000000000000
R10: 0000000020fef000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004bbc2c R14: 00000000004c8f48 R15: 0000000000000000
Code: 83 7d a8 00 0f 85 99 fe ff ff 48 8b bd 68 ff ff ff 44 8b 37 e8 a7 a8 03 00 8b 00 4c 03 75 a0 4c 89 e1 48 09 c1 0f 85 85 fe ff ff <49> 8b 1e 4c 89 f7 e8 ca a8 03 00 4c 8b 30 8b 02 89 45 c4 48 83 
RIP: freelist_dereference mm/slub.c:264 [inline] RSP: ffff88011ee0fa58
RIP: get_freepointer mm/slub.c:270 [inline] RSP: ffff88011ee0fa58
RIP: get_freepointer_safe mm/slub.c:285 [inline] RSP: ffff88011ee0fa58
RIP: slab_alloc_node mm/slub.c:2722 [inline] RSP: ffff88011ee0fa58
RIP: slab_alloc mm/slub.c:2761 [inline] RSP: ffff88011ee0fa58
RIP: kmem_cache_alloc+0x49b/0xb70 mm/slub.c:2766 RSP: ffff88011ee0fa58
---[ end trace f2098e4cc498dcad ]---