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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:2876 [inline]
BUG: KASAN: null-ptr-deref in drop_buffers+0x64/0x4c0 fs/buffer.c:2888
Read of size 4 at addr 0000000000000060 by task kswapd0/89

CPU: 1 UID: 0 PID: 89 Comm: kswapd0 Not tainted 6.13.0-syzkaller-02526-gc4b9570cfb63 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_report+0xe8/0x550 mm/kasan/report.c:492
 kasan_report+0x143/0x180 mm/kasan/report.c:602
 kasan_check_range+0x282/0x290 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:2876 [inline]
 drop_buffers+0x64/0x4c0 fs/buffer.c:2888
 try_to_free_buffers+0x278/0x3b0 fs/buffer.c:2942
 shrink_folio_list+0x210c/0x57e0 mm/vmscan.c:1440
 shrink_inactive_list mm/vmscan.c:1967 [inline]
 shrink_list mm/vmscan.c:2205 [inline]
 shrink_lruvec+0x16db/0x2f30 mm/vmscan.c:5737
 shrink_node_memcgs mm/vmscan.c:5939 [inline]
 shrink_node+0x12a4/0x2e10 mm/vmscan.c:5980
 kswapd_shrink_node mm/vmscan.c:6795 [inline]
 balance_pgdat mm/vmscan.c:6987 [inline]
 kswapd+0x1958/0x2e30 mm/vmscan.c:7252
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
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