syzbot

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...0: (7 ticks this GP) idle=4a2c/1/0x4000000000000000 softirq=22852/22853 fqs=5249
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:        0          0            0
rcu: 	cputime:        0          0            0   ==> 52500(ms)
rcu: 	(detected by 0, t=10502 jiffies, g=18453, q=185 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8206 Comm: iou-sqp-8205 Not tainted 6.13.0-rc5-syzkaller-00004-gccb98ccef0e5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__kasan_check_read+0x0/0x20 mm/kasan/shadow.c:30
Code: c3 cc cc cc cc 48 83 c4 60 48 c7 c7 28 81 7c 8d 5b 5d 41 5c e9 d1 82 7c ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 1f f1 ff ff 66 66 2e 0f 1f
RSP: 0000:ffffc90000a189d8 EFLAGS: 00000006
RAX: 0000000000000030 RBX: 0000000000000c03 RCX: 0000000000000000
RDX: 1ffff11006e4c174 RSI: 0000000000000008 RDI: ffffffff96e51e40
RBP: ffffc90000a18b28 R08: 0000000000000004 R09: 0000000000000001
R10: ffffffff96e51e47 R11: 0000000000000005 R12: ffff888037260000
R13: 0000000000000001 R14: 0000000000000000 R15: 1ffff92000143144
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000202a0fb8 CR3: 000000005d8f4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class+0x4e/0x130 kernel/locking/lockdep.c:228
 mark_lock+0xb5/0xc60 kernel/locking/lockdep.c:4727
 mark_usage kernel/locking/lockdep.c:4635 [inline]
 __lock_acquire+0x1390/0x3c40 kernel/locking/lockdep.c:5180
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 advance_sched+0xd8/0xc60 net/sched/sch_taprio.c:924
 __run_hrtimer kernel/time/hrtimer.c:1739 [inline]
 __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire.part.0+0x155/0x380 kernel/locking/lockdep.c:5814
Code: b8 ff ff ff ff 65 0f c1 05 d0 c1 8b 7e 83 f8 01 0f 85 d0 01 00 00 9c 58 f6 c4 02 0f 85 e5 01 00 00 48 85 ed 0f 85 b6 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7
RSP: 0000:ffffc900045df4c0 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 1ffff920008bbe99 RCX: 00000000c872ccd6
RDX: 0000000000000001 RSI: ffffffff8b6cdce0 RDI: ffffffff8bd1ede0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff2dca398
R10: ffffffff96e51cc7 R11: 0000000000000003 R12: 0000000000000000
R13: ffffffff8e1bb840 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock_sched include/linux/rcupdate.h:941 [inline]
 pfn_valid include/linux/mmzone.h:2048 [inline]
 page_table_check_clear mm/page_table_check.c:70 [inline]
 __page_table_check_pte_clear+0x1c0/0x580 mm/page_table_check.c:169
 page_table_check_pte_clear include/linux/page_table_check.h:49 [inline]
 ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1337 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:709 [inline]
 zap_present_folio_ptes mm/memory.c:1502 [inline]
 zap_present_ptes mm/memory.c:1580 [inline]
 zap_pte_range mm/memory.c:1627 [inline]
 zap_pmd_range mm/memory.c:1753 [inline]
 zap_pud_range mm/memory.c:1782 [inline]
 zap_p4d_range mm/memory.c:1803 [inline]
 unmap_page_range+0x2ce1/0x3d10 mm/memory.c:1824
 unmap_single_vma+0x194/0x2b0 mm/memory.c:1870
 unmap_vmas+0x22f/0x490 mm/memory.c:1914
 exit_mmap+0x1c6/0xb20 mm/mmap.c:1668
 __mmput+0x12a/0x4c0 kernel/fork.c:1348
 mmput+0x62/0x70 kernel/fork.c:1370
 exit_mm kernel/exit.c:570 [inline]
 do_exit+0x9ba/0x2d70 kernel/exit.c:925
 io_sq_thread+0xb51/0x1b10 io_uring/sqpoll.c:385
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>