blk_update_request: I/O error, dev loop0, sector 2688
Buffer I/O error on dev loop0, logical block 336, lost async page write
BUG: unable to handle kernel paging request at ffffeafff9888000
IP: [<ffffffff8154a430>] constant_test_bit arch/x86/include/asm/bitops.h:311 [inline]
IP: [<ffffffff8154a430>] PageHead include/linux/page-flags.h:473 [inline]
IP: [<ffffffff8154a430>] copy_huge_pmd+0x260/0x550 mm/huge_memory.c:854
PGD 0 [  103.425134] 
Oops: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 7749 Comm: syz-executor6 Not tainted 4.9.120-gf85543b #76
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801a6bae000 task.stack: ffff8801a6710000
RIP: 0010:[<ffffffff8154a430>]  [<ffffffff8154a430>] constant_test_bit arch/x86/include/asm/bitops.h:311 [inline]
RIP: 0010:[<ffffffff8154a430>]  [<ffffffff8154a430>] PageHead include/linux/page-flags.h:473 [inline]
RIP: 0010:[<ffffffff8154a430>]  [<ffffffff8154a430>] copy_huge_pmd+0x260/0x550 mm/huge_memory.c:854
RSP: 0018:ffff8801a67179e8  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffeafff9888000 RCX: ffffc90008955000
RDX: 1ffffd5fff311000 RSI: ffffffff8154a3f5 RDI: 00003ffe622001e0
RBP: ffff8801a6717a40 R08: ffff8801a6bae960 R09: 0000000000000001
R10: ffff8801a6bae000 R11: 1ffff10034d75d27 R12: ffff8801c48f39c0
R13: ffff8801cd5aa800 R14: 00003ffe622001e0 R15: ffff8801bef06800
FS:  00007fa8ce585700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffeafff9888000 CR3: 00000001d8536000 CR4: 00000000001606f0
Stack:
 00003ffe622001e0 ffff8801d7a2c7e8 ffff8801be5a3318 ffffea0007331a40
 00003fffffe00000 0000000020000000 ffff8801bef06800 ffff8801bef06800
 00000001bef06067 000000003fffffff dffffc0000000000 ffff8801a6717c08
Call Trace:
 [<ffffffff814cf17e>] copy_pmd_range mm/memory.c:1003 [inline]
 [<ffffffff814cf17e>] copy_pud_range mm/memory.c:1035 [inline]
 [<ffffffff814cf17e>] copy_page_range+0x71e/0x19f0 mm/memory.c:1097
 [<ffffffff8113315b>] dup_mmap kernel/fork.c:674 [inline]
 [<ffffffff8113315b>] dup_mm kernel/fork.c:1156 [inline]
 [<ffffffff8113315b>] copy_mm kernel/fork.c:1210 [inline]
 [<ffffffff8113315b>] copy_process.part.51+0x3d6b/0x6330 kernel/fork.c:1678
 [<ffffffff81135ba0>] copy_process kernel/fork.c:1503 [inline]
 [<ffffffff81135ba0>] _do_fork+0x1b0/0xdd0 kernel/fork.c:1963
 [<ffffffff81136897>] SYSC_clone kernel/fork.c:2075 [inline]
 [<ffffffff81136897>] SyS_clone+0x37/0x50 kernel/fork.c:2069
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839ffcd3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 00 ea ff ff 48 23 45 c8 48 c1 e8 06 48 8d 1c 10 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 0f 85 4c 02 00 00 <48> 8b 03 f6 c4 40 0f 84 c7 01 00 00 e8 af 63 e1 ff 48 8d 7b 20 
RIP  [<ffffffff8154a430>] constant_test_bit arch/x86/include/asm/bitops.h:311 [inline]
RIP  [<ffffffff8154a430>] PageHead include/linux/page-flags.h:473 [inline]
RIP  [<ffffffff8154a430>] copy_huge_pmd+0x260/0x550 mm/huge_memory.c:854
 RSP <ffff8801a67179e8>
CR2: ffffeafff9888000
---[ end trace 1b4a65193d1f157d ]---