==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: null-ptr-deref in atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
BUG: KASAN: null-ptr-deref in buffer_busy fs/buffer.c:2882 [inline]
BUG: KASAN: null-ptr-deref in drop_buffers.constprop.0+0x89/0x340 fs/buffer.c:2894
Read of size 4 at addr 0000000000000060 by task kswapd0/109

CPU: 3 PID: 109 Comm: kswapd0 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 kasan_report+0xda/0x110 mm/kasan/report.c:601
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0xef/0x190 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
 buffer_busy fs/buffer.c:2882 [inline]
 drop_buffers.constprop.0+0x89/0x340 fs/buffer.c:2894
 try_to_free_buffers+0x21a/0x2d0 fs/buffer.c:2924
 filemap_release_folio+0x212/0x270 mm/filemap.c:4087
 shrink_folio_list+0x292c/0x3ea0 mm/vmscan.c:1369
 evict_folios+0x6e7/0x1b90 mm/vmscan.c:4521
 try_to_shrink_lruvec+0x638/0xa10 mm/vmscan.c:4726
 shrink_one+0x3f4/0x7b0 mm/vmscan.c:4765
 shrink_many mm/vmscan.c:4828 [inline]
 lru_gen_shrink_node mm/vmscan.c:4929 [inline]
 shrink_node+0x2149/0x3740 mm/vmscan.c:5888
 kswapd_shrink_node mm/vmscan.c:6693 [inline]
 balance_pgdat+0x9d2/0x1a90 mm/vmscan.c:6883
 kswapd+0x5be/0xbf0 mm/vmscan.c:7143
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
==================================================================