rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...0: (1 GPs behind) idle=b71/1/0x4000000000000000 softirq=10179/10180 fqs=5250 
	(detected by 0, t=10502 jiffies, g=11605, q=685)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 155 Comm: kworker/u4:3 Not tainted 5.15.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: writeback wb_workfn (flush-8:0)
RIP: 0010:__hrtimer_run_queues+0x265/0xcf0 kernel/time/hrtimer.c:1749
Code: 44 24 10 49 8d 84 1c 90 00 00 00 48 89 44 24 18 49 8d 84 1c 88 00 00 00 48 89 84 24 80 00 00 00 4c 89 6c 24 38 48 8b 44 24 48 <42> 80 3c 38 00 74 0d 48 8d bc 24 e0 00 00 00 e8 67 e6 5a 00 4c 8b
RSP: 0018:ffffc90000dd0d60 EFLAGS: 00000006
RAX: 1ffff920001ba1c8 RBX: ffff8880b8f2a3c8 RCX: ffff88801c741dc0
RDX: 0000000000010000 RSI: 1ffff110171e5472 RDI: ffff888074428b40
RBP: ffffc90000dd0ea8 R08: dffffc0000000000 R09: ffff888074428b40
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b8f2a200
R13: ffff8880b8f2a380 R14: ffff888074428b40 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f44b1573f98 CR3: 000000005c816000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:instrument_atomic_read include/linux/instrumented.h:71 [inline]
RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline]
RIP: 0010:lock_page_memcg+0x2cc/0x4d0 mm/memcontrol.c:2059
Code: 01 00 74 0a 48 8d 7c 24 60 e8 b0 3f fb ff f6 44 24 61 02 0f 85 f9 00 00 00 41 f7 c4 00 02 00 00 74 01 fb 49 8d 9e 80 10 00 00 <48> 89 df be 04 00 00 00 e8 17 41 fb ff 48 89 d8 48 c1 e8 03 48 b9
RSP: 0018:ffffc900020368a0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: ffff888017685080 RCX: 1ffff92000406d20
RDX: dffffc0000000000 RSI: ffffffff8aab2b80 RDI: ffffffff8af9f340
RBP: ffffc90002036990 R08: dffffc0000000000 R09: fffffbfff2131439
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000246
R13: ffffea0001ce1878 R14: ffff888017684000 R15: ffff888017684670
 __test_set_page_writeback+0x9d/0xf10 mm/page-writeback.c:2844
 ext4_bio_write_page+0x2b3/0x1f80
 mpage_submit_page+0x18d/0x230 fs/ext4/inode.c:2112
 mpage_process_page_bufs+0x6c8/0x8b0 fs/ext4/inode.c:2226
 mpage_prepare_extent_to_map+0xc9d/0x1150 fs/ext4/inode.c:2654
 ext4_writepages+0xcd0/0x3d10 fs/ext4/inode.c:2782
 do_writepages+0x481/0x730 mm/page-writeback.c:2386
 __writeback_single_inode+0x15b/0xe30 fs/fs-writeback.c:1647
 writeback_sb_inodes+0xbce/0x1a40 fs/fs-writeback.c:1930
 __writeback_inodes_wb+0x114/0x400 fs/fs-writeback.c:2001
 wb_writeback+0x465/0xc50 fs/fs-writeback.c:2106
 wb_check_old_data_flush fs/fs-writeback.c:2206 [inline]
 wb_do_writeback fs/fs-writeback.c:2259 [inline]
 wb_workfn+0xc55/0x1130 fs/fs-writeback.c:2288
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>