==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:72 [inline]
BUG: KASAN: null-ptr-deref in atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline]
BUG: KASAN: null-ptr-deref in page_ref_count include/linux/page_ref.h:67 [inline]
BUG: KASAN: null-ptr-deref in folio_ref_count include/linux/page_ref.h:89 [inline]
BUG: KASAN: null-ptr-deref in folio_get include/linux/mm.h:1167 [inline]
BUG: KASAN: null-ptr-deref in hugetlb_fault+0x1423/0x23f0 mm/hugetlb.c:6112
Read of size 4 at addr 0000000000000034 by task syz-executor.2/27697

CPU: 1 PID: 27697 Comm: syz-executor.2 Not tainted 6.2.0-rc5-next-20230123-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
 kasan_report+0xc0/0xf0 mm/kasan/report.c:517
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0x141/0x190 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline]
 page_ref_count include/linux/page_ref.h:67 [inline]
 folio_ref_count include/linux/page_ref.h:89 [inline]
 folio_get include/linux/mm.h:1167 [inline]
 hugetlb_fault+0x1423/0x23f0 mm/hugetlb.c:6112
 handle_mm_fault+0x753/0x850 mm/memory.c:5196
 do_user_addr_fault+0x475/0x1210 arch/x86/mm/fault.c:1407
 handle_page_fault arch/x86/mm/fault.c:1498 [inline]
 exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1554
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f6579629017
Code: 89 ea 85 c0 75 c9 44 89 d0 44 29 c0 74 55 48 8b 77 28 48 3b 77 20 74 59 4c 8b 6f 18 4c 8d 76 01 83 f8 08 4c 89 77 28 0f 4f c5 <41> 0f b6 74 35 00 eb 99 90 44 29 c9 49 8b 53 08 45 29 c4 89 77 30
RSP: 002b:00007f657a32b5d0 EFLAGS: 00010202
RAX: 0000000000000008 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00007f657a32b6a2 RSI: 0000000000000d7e RDI: 00007f657a32b700
RBP: 0000000000000008 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000010 R11: 00007f657a32b670 R12: 0000000000000000
R13: 000000002001eec2 R14: 0000000000000d7f R15: 000000000000011d
 </TASK>
==================================================================