BUG: unable to handle page fault for address: fffffffffffffffc
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD b68f067 P4D b68f067 PUD b691067 PMD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 9835 Comm: syz-executor356 Not tainted 5.14.0-rc5-next-20210810-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_add include/linux/list.h:71 [inline]
RIP: 0010:list_add include/linux/list.h:86 [inline]
RIP: 0010:alloc_huge_page+0xdcb/0x11b0 mm/hugetlb.c:2821
Code: 00 0f 85 6b 03 00 00 48 89 ce 48 89 4a 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ee 03 80 3c 06 00 0f 85 2b 03 00 00 49 8d 7e 10 <49> 89 56 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80
RSP: 0000:ffffc9000c0d7ca0 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: fffffffffffffffc
RDX: ffffea0005210008 RSI: 1fffffffffffffff RDI: 0000000000000004
RBP: ffff888077976a50 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff81b6fda1 R11: 0000000000000000 R12: ffffffff90246a70
R13: 0000000000000001 R14: fffffffffffffff4 R15: ffffffff90246b48
FS:  00007f2fb6877700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffffc CR3: 0000000025908000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 hugetlb_no_page mm/hugetlb.c:4905 [inline]
 hugetlb_fault+0xf44/0x2500 mm/hugetlb.c:5112
 handle_mm_fault+0x661/0x790 mm/memory.c:4791
 do_user_addr_fault+0x48b/0x11c0 arch/x86/mm/fault.c:1390
 handle_page_fault arch/x86/mm/fault.c:1475 [inline]
 exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1531
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0033:0x40246f
Code: d2 41 b8 9f 0d 00 00 bf 27 01 00 00 31 c0 e8 f8 33 04 00 eb a1 66 0f 1f 44 00 00 be 78 65 00 00 45 31 c0 31 c9 ba 00 00 00 20 <66> 89 34 25 0c 00 00 20 bf 01 01 00 00 be 9c ff ff ff 4c 89 24 25
RSP: 002b:00007f2fb6877320 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000004ca408 RCX: 0000000000000000
RDX: 0000000020000000 RSI: 0000000000006578 RDI: 00000000004ca40c
RBP: 00000000004ca400 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 65732f636f72702f
R13: 00007ffcdea3f94f R14: 00007f2fb6877400 R15: 0000000000022000
Modules linked in:
CR2: fffffffffffffffc
---[ end trace b4b86fe3d23ae4b4 ]---
RIP: 0010:__list_add include/linux/list.h:71 [inline]
RIP: 0010:list_add include/linux/list.h:86 [inline]
RIP: 0010:alloc_huge_page+0xdcb/0x11b0 mm/hugetlb.c:2821
Code: 00 0f 85 6b 03 00 00 48 89 ce 48 89 4a 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ee 03 80 3c 06 00 0f 85 2b 03 00 00 49 8d 7e 10 <49> 89 56 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80
RSP: 0000:ffffc9000c0d7ca0 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: fffffffffffffffc
RDX: ffffea0005210008 RSI: 1fffffffffffffff RDI: 0000000000000004
RBP: ffff888077976a50 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff81b6fda1 R11: 0000000000000000 R12: ffffffff90246a70
R13: 0000000000000001 R14: fffffffffffffff4 R15: ffffffff90246b48
FS:  00007f2fb6877700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffffc CR3: 0000000025908000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400