BUG: unable to handle kernel paging request at ffffea0004855c88
PGD 21f7ef067 P4D 21f7ef067 PUD 21f7ee067 PMD 0 
Oops: 0000 [#1] SMP PTI
CPU: 0 PID: 7006 Comm: syz-executor7 Not tainted 4.18.0-rc8+ #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__read_once_size include/linux/compiler.h:197 [inline]
RIP: 0010:compound_head include/linux/page-flags.h:142 [inline]
RIP: 0010:PageAnon include/linux/page-flags.h:413 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1324 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1436 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1465 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1486 [inline]
RIP: 0010:unmap_page_range+0x17ec/0x3b60 mm/memory.c:1507
Code: 00 4c 8b b4 24 b0 00 00 00 4c 8b 64 24 40 0f 84 3f 0c 00 00 4d 8d 6c 24 08 4c 8b bc 24 80 00 00 00 4d 85 ff 0f 85 54 03 00 00 <4d> 8b 74 24 08 4c 89 ef e8 c7 36 16 00 48 8b 08 89 c8 83 e0 01 45 
RSP: 0018:ffff88012f64f240 EFLAGS: 00010246
RAX: ffff88013169f620 RBX: 0000000000000000 RCX: ffff8801317ef620
RDX: ffff8801317ef620 RSI: aaaaaaaaaaaab000 RDI: ffffea00071c5da0
RBP: ffff88012f64f4a8 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000000 R12: ffffea0004855c80
R13: ffffea0004855c88 R14: 0000000000000000 R15: 0000000000000000
FS:  00007efd29c1a700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffea0004855c88 CR3: 00000001b2628000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 unmap_single_vma+0x445/0x5e0 mm/memory.c:1552
 unmap_vmas+0x241/0x370 mm/memory.c:1582
 exit_mmap+0x4d7/0x960 mm/mmap.c:3094
 __mmput+0x154/0x5f0 kernel/fork.c:994
 mmput+0xa7/0xe0 kernel/fork.c:1015
 exit_mm+0x6dd/0x790 kernel/exit.c:545
 do_exit+0xbf7/0x3890 kernel/exit.c:854
 do_group_exit+0x1a0/0x350 kernel/exit.c:970
 get_signal+0x1425/0x1ef0 kernel/signal.c:2468
 do_signal+0x120/0x2090 arch/x86/kernel/signal.c:816
 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline]
 prepare_exit_to_usermode+0x273/0x410 arch/x86/entry/common.c:197
 syscall_return_slowpath+0xdb/0x700 arch/x86/entry/common.c:268
 do_syscall_64+0x1ab/0x220 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457089
Code: 08 e8 3b a9 fb ff 48 8b 44 24 20 48 8b 4c 24 18 48 8b 54 24 38 48 8b 7c 24 48 eb 8d 48 8b 6c 24 50 48 83 c4 58 c3 48 89 04 24 <48> 89 5c 24 08 e8 0d a9 fb ff 48 8b 44 24 40 48 8b 4c 24 48 48 8b 
RSP: 002b:00007efd29c19c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000095
RAX: 0000000000000000 RBX: 00007efd29c1a6d4 RCX: 0000000000457089
RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020001000
RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d2208 R14: 00000000004c79b5 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
CR2: ffffea0004855c88
---[ end trace 7b8be8632e2728f8 ]---
RIP: 0010:__read_once_size include/linux/compiler.h:197 [inline]
RIP: 0010:compound_head include/linux/page-flags.h:142 [inline]
RIP: 0010:PageAnon include/linux/page-flags.h:413 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1324 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1436 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1465 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1486 [inline]
RIP: 0010:unmap_page_range+0x17ec/0x3b60 mm/memory.c:1507
Code: 00 4c 8b b4 24 b0 00 00 00 4c 8b 64 24 40 0f 84 3f 0c 00 00 4d 8d 6c 24 08 4c 8b bc 24 80 00 00 00 4d 85 ff 0f 85 54 03 00 00 <4d> 8b 74 24 08 4c 89 ef e8 c7 36 16 00 48 8b 08 89 c8 83 e0 01 45 
RSP: 0018:ffff88012f64f240 EFLAGS: 00010246
RAX: ffff88013169f620 RBX: 0000000000000000 RCX: ffff8801317ef620
RDX: ffff8801317ef620 RSI: aaaaaaaaaaaab000 RDI: ffffea00071c5da0
RBP: ffff88012f64f4a8 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000000 R12: ffffea0004855c80
R13: ffffea0004855c88 R14: 0000000000000000 R15: 0000000000000000
FS:  00007efd29c1a700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffea0004855c88 CR3: 00000001b2628000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400