==================================================================
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.5/7208

CPU: 0 PID: 7208 Comm: syz-executor.5 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: 0033:0x7fcf6222bd49
Code: 48 8b 04 24 48 85 c0 74 17 48 8b 54 24 18 48 0f ca 48 89 54 24 18 48 83 f8 01 0f 85 9b 02 00 00 48 8b 44 24 10 48 8b 54 24 18 <48> 89 10 e9 c2 fd ff ff 48 8b 44 24 10 0f b7 10 48 8b 04 24 48 85
RSP: 002b:00007ffc50102e10 EFLAGS: 00010246
RAX: 00000000200000c0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000020000000 RSI: 0000000000000000 RDI: 000055555607e2e8
RBP: 00007ffc50102f08 R08: 0000000000000000 R09: 0000000000000000
R10: 00007fcf61e00140 R11: 0000000000014e20 R12: 0000000000069ca5
R13: 00007ffc50102f30 R14: 00007ffc50102f50 R15: 0000000000000032
 </TASK>
==================================================================