rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2671 jiffies s: 2417 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: 5308 Comm: dhcpcd Not tainted 6.9.0-syzkaller-08544-g4b377b4868ef #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:lock_acquire+0xe/0x550 kernel/locking/lockdep.c:5722
Code: cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 <41> 54 53 48 83 e4 e0 48 81 ec 20 01 00 00 4c 89 4c 24 28 4c 89 44
RSP: 0018:ffffc90000007c60 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffffffff8990ed12 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e333d20
RBP: ffffc90000007c78 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10039d945e R12: dffffc0000000000
R13: ffff88802c7a5c08 R14: ffff88802c7a5c00 R15: ffff88801ceca360
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f1b0dcc680 CR3: 0000000029d0a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 rcu_read_lock include/linux/rcupdate.h:781 [inline]
 advance_sched+0xa1e/0xca0 net/sched/sch_taprio.c:985
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x5a5/0xd50 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__preempt_count_add kernel/rcu/tree.c:720 [inline]
RIP: 0010:rcu_is_watching+0x6/0xb0 kernel/rcu/tree.c:723
Code: 6d 03 e9 2b ff ff ff e8 d8 aa 0b 0a 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 <41> 56 53 65 ff 05 18 79 87 7e e8 0b c9 0b 0a 89 c3 83 f8 08 73 7a
RSP: 0018:ffffc90003f1f850 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff81727814
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8facbbe8
RBP: ffffc90003f1f9a8 R08: ffffffff8facbbef R09: 1ffffffff1f5977d
R10: dffffc0000000000 R11: fffffbfff1f5977e R12: 1ffff920007e3f14
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88807e16e100
 trace_lock_acquire include/trace/events/lock.h:24 [inline]
 lock_acquire+0xe3/0x550 kernel/locking/lockdep.c:5725
 down_write+0x3a/0x50 kernel/locking/rwsem.c:1579
 i_mmap_lock_write include/linux/fs.h:501 [inline]
 unlink_file_vma+0x78/0x110 mm/mmap.c:128
 free_pgtables+0x55b/0x7c0 mm/memory.c:403
 exit_mmap+0x4b3/0xd60 mm/mmap.c:3280
 __mmput+0x115/0x3c0 kernel/fork.c:1346
 exit_mm+0x220/0x310 kernel/exit.c:568
 do_exit+0x99e/0x27e0 kernel/exit.c:864
 do_group_exit+0x207/0x2c0 kernel/exit.c:1026
 __do_sys_exit_group kernel/exit.c:1037 [inline]
 __se_sys_exit_group kernel/exit.c:1035 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1035
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa15fab1a90
Code: Unable to access opcode bytes at 0x7fa15fab1a66.
RSP: 002b:00007fff5ad71d48 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fa15fa016c0 RCX: 00007fa15fab1a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00007fff5ad71dc8 R08: 0000000000000007 R09: c1604b16476bb612
R10: 0000000000000120 R11: 0000000000000202 R12: 0000000000000000
R13: 00007fff5ad72398 R14: 0000000000000003 R15: 0000000000000000
 </TASK>