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BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: null-ptr-deref in atomic_cmpxchg include/linux/atomic/atomic-instrumented.h:503 [inline]
BUG: KASAN: null-ptr-deref in page_ref_freeze include/linux/page_ref.h:318 [inline]
BUG: KASAN: null-ptr-deref in alloc_buddy_huge_page.isra.0+0x103/0x230 mm/hugetlb.c:1960
Write of size 4 at addr 0000000000000034 by task syz-executor.2/23413

CPU: 0 PID: 23413 Comm: syz-executor.2 Not tainted 6.0.0-rc6-next-20220923-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 kasan_report+0xbb/0x1f0 mm/kasan/report.c:495
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189
 instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
 atomic_cmpxchg include/linux/atomic/atomic-instrumented.h:503 [inline]
 page_ref_freeze include/linux/page_ref.h:318 [inline]
 alloc_buddy_huge_page.isra.0+0x103/0x230 mm/hugetlb.c:1960
 alloc_fresh_huge_page+0x395/0x530 mm/hugetlb.c:2013
 alloc_surplus_huge_page+0x139/0x2f0 mm/hugetlb.c:2227
 alloc_buddy_huge_page_with_mpol mm/hugetlb.c:2304 [inline]
 alloc_huge_page+0xbf6/0x1180 mm/hugetlb.c:2919
 hugetlb_no_page mm/hugetlb.c:5571 [inline]
 hugetlb_fault+0x1056/0x1e60 mm/hugetlb.c:5796
 follow_hugetlb_page+0x3f3/0x1850 mm/hugetlb.c:6291
 __get_user_pages+0x2cb/0xf10 mm/gup.c:1146
 __get_user_pages_locked mm/gup.c:1378 [inline]
 get_user_pages_unlocked+0x1a9/0x740 mm/gup.c:2287
 __gup_longterm_unlocked mm/gup.c:2898 [inline]
 internal_get_user_pages_fast+0x1d39/0x32b0 mm/gup.c:2988
 get_user_pages_fast+0x66/0xa0 mm/gup.c:3080
 __iov_iter_get_pages_alloc+0x3a6/0x24c0 lib/iov_iter.c:1486
 iov_iter_get_pages2+0xa7/0x100 lib/iov_iter.c:1535
 __bio_iov_iter_get_pages block/bio.c:1218 [inline]
 bio_iov_iter_get_pages+0x1de/0x1100 block/bio.c:1289
 __blkdev_direct_IO+0x797/0xdf0 block/fops.c:218
 blkdev_direct_IO block/fops.c:371 [inline]
 blkdev_direct_IO block/fops.c:358 [inline]
 blkdev_read_iter+0x676/0x750 block/fops.c:588
 call_read_iter include/linux/fs.h:2184 [inline]
 aio_read+0x2a4/0x450 fs/aio.c:1560
 __io_submit_one fs/aio.c:1970 [inline]
 io_submit_one+0x10b5/0x1c50 fs/aio.c:2019
 __do_sys_io_submit fs/aio.c:2078 [inline]
 __se_sys_io_submit fs/aio.c:2048 [inline]
 __x64_sys_io_submit+0x18c/0x320 fs/aio.c:2048
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7771a8a5a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7772c68168 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f7771bac050 RCX: 00007f7771a8a5a9
RDX: 00000000200000c0 RSI: 0000000000000008 RDI: 00007f7772c69000
RBP: 00007f7772c681d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffc8633be9f R14: 00007f7772c68300 R15: 0000000000022000
 </TASK>
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