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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.2/26010

CPU: 1 PID: 26010 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: 0033:0x7fcd53a86b2f
Code: d0 eb 0b 0f 1f 84 00 00 00 00 00 48 89 f8 48 83 fa 10 0f 82 da 00 00 00 48 83 fa 20 0f 87 1f 01 00 00 0f 10 06 0f 10 4c 16 f0 <0f> 11 07 0f 11 4c 17 f0 c3 0f 1f 84 00 00 00 00 00 48 39 d1 0f 82
RSP: 002b:00007ffc8dfa6d48 EFLAGS: 00010287
RAX: 00000000200001c0 RBX: 0000000000000000 RCX: 00007fcd53600000
RDX: 0000000000000013 RSI: 00007fcd53600458 RDI: 00000000200001c0
RBP: 00007ffc8dfa6e08 R08: 00007fcd53a00000 R09: 00007fcd53600000
R10: 00007fcd53600440 R11: 000000000002a61c R12: 00000000000db69e
R13: 00007ffc8dfa6e30 R14: 00007ffc8dfa6e50 R15: 0000000000000032
 </TASK>
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