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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 kswapd0/94

CPU: 0 UID: 0 PID: 94 Comm: kswapd0 Tainted: G        W           6.17.0-rc2-syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
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: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:2886 [inline]
 drop_buffers+0x65/0x4f0 fs/buffer.c:2898
 try_to_free_buffers+0x1e1/0x2d0 fs/buffer.c:2952
 shrink_folio_list+0x2011/0x4a00 mm/vmscan.c:1518
 shrink_inactive_list mm/vmscan.c:2050 [inline]
 shrink_list mm/vmscan.c:2287 [inline]
 shrink_lruvec+0x1506/0x2750 mm/vmscan.c:5849
 shrink_node_memcgs mm/vmscan.c:6051 [inline]
 shrink_node+0x11ad/0x2a60 mm/vmscan.c:6092
 kswapd_shrink_node mm/vmscan.c:6938 [inline]
 balance_pgdat mm/vmscan.c:7121 [inline]
 kswapd+0x1295/0x2190 mm/vmscan.c:7386
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
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