rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2680 jiffies s: 67181 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15961 Comm: syz-executor.0 Not tainted 6.7.0-rc6-next-20231221-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:write_comp_data+0x7d/0x80 kernel/kcov.c:262
Code: 00 00 4a 8d 34 dd 28 00 00 00 48 39 f2 72 1b 48 83 c7 01 48 89 38 4c 89 44 30 e0 4c 89 4c 30 e8 4c 89 54 30 f0 4a 89 4c d8 20 <c3> 66 90 f3 0f 1e fa 48 8b 0c 24 40 0f b6 d6 40 0f b6 f7 31 ff e9
RSP: 0018:ffffc90000007df8 EFLAGS: 00000046
RAX: 0000000000010002 RBX: ffff8880b982bbc0 RCX: ffffffff8176b0c5
RDX: ffff888022173b80 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8880246b8340 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff8acf3060 R12: 0000000000000001
R13: 000000000003c2cc R14: 0000000000000000 R15: ffffffff88acdf90
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff0ed84bd58 CR3: 0000000051465000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 trace_hrtimer_start include/trace/events/timer.h:222 [inline]
 debug_activate kernel/time/hrtimer.c:478 [inline]
 enqueue_hrtimer+0x2a5/0x320 kernel/time/hrtimer.c:1087
 __run_hrtimer kernel/time/hrtimer.c:1705 [inline]
 __hrtimer_run_queues+0xa0f/0xc20 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x10c/0x410 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_release+0x3ee/0x6a0 kernel/locking/lockdep.c:5778
Code: 00 c7 45 08 00 00 00 00 48 8b 84 24 88 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 2a 02 00 00 48 81 c4 90 00 00 00 5b 5d 41 5c <41> 5d 41 5e 41 5f c3 49 c7 c6 cc c2 03 00 65 8b 1d b9 5b 9b 7e 83
RSP: 0018:ffffc900036af848 EFLAGS: 00000286
RAX: 0000000000000000 RBX: 1ffff920006d5f0d RCX: ffffffff816863b9
RDX: 0000000000000000 RSI: ffffffff8b2f9740 RDI: 0000000000000000
RBP: 0000000000078a28 R08: 0000000000000000 R09: fffffbfff1e74a8a
R10: ffffffff8f3a5457 R11: dffffc0000000000 R12: 0000000000000000
R13: 0000000000000008 R14: 000000000003c2cc R15: 0000000000000067
 rcu_lock_release include/linux/rcupdate.h:308 [inline]
 rcu_read_unlock include/linux/rcupdate.h:783 [inline]
 pfn_valid include/linux/mmzone.h:2044 [inline]
 page_table_check_clear mm/page_table_check.c:68 [inline]
 __page_table_check_pte_clear+0x4c0/0x5a0 mm/page_table_check.c:158
 page_table_check_pte_clear include/linux/page_table_check.h:49 [inline]
 ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1301 [inline]
 zap_pte_range mm/memory.c:1449 [inline]
 zap_pmd_range mm/memory.c:1592 [inline]
 zap_pud_range mm/memory.c:1621 [inline]
 zap_p4d_range mm/memory.c:1642 [inline]
 unmap_page_range+0x1860/0x2b60 mm/memory.c:1663
 unmap_single_vma+0x194/0x2b0 mm/memory.c:1709
 unmap_vmas+0x22f/0x490 mm/memory.c:1753
 exit_mmap+0x1c1/0xb60 mm/mmap.c:3277
 __mmput+0x12a/0x4d0 kernel/fork.c:1343
 mmput+0x62/0x70 kernel/fork.c:1365
 exit_mm kernel/exit.c:569 [inline]
 do_exit+0x999/0x2ac0 kernel/exit.c:858
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1020
 __do_sys_exit_group kernel/exit.c:1031 [inline]
 __se_sys_exit_group kernel/exit.c:1029 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1029
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f73ca67cce9
Code: Unable to access opcode bytes at 0x7f73ca67ccbf.
RSP: 002b:00007ffe79d00168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f73ca67cce9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000453 R09: 0000000000000000
R10: 0000001b30b20000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
 </TASK>