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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:2886 [inline]
BUG: KASAN: null-ptr-deref in drop_buffers+0x65/0x4f0 fs/buffer.c:2898
Read of size 4 at addr 0000000000000060 by task kswapd0/87

CPU: 0 UID: 0 PID: 87 Comm: kswapd0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 kasan_report+0x118/0x150 mm/kasan/report.c:595
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:200
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
 buffer_busy fs/buffer.c:2886 [inline]
 drop_buffers+0x65/0x4f0 fs/buffer.c:2898
 try_to_free_buffers+0x1e1/0x2d0 fs/buffer.c:2952
 shrink_folio_list+0x20ac/0x4c70 mm/vmscan.c:1511
 evict_folios+0x47f2/0x58b0 mm/vmscan.c:4737
 try_to_shrink_lruvec+0x8a3/0xb50 mm/vmscan.c:4900
 shrink_one+0x21b/0x7c0 mm/vmscan.c:4945
 shrink_many mm/vmscan.c:5008 [inline]
 lru_gen_shrink_node mm/vmscan.c:5086 [inline]
 shrink_node+0x314e/0x3760 mm/vmscan.c:6073
 kswapd_shrink_node mm/vmscan.c:6933 [inline]
 balance_pgdat mm/vmscan.c:7116 [inline]
 kswapd+0x147c/0x2830 mm/vmscan.c:7381
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
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