rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2631 jiffies s: 805 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5163 Comm: dhcpcd Not tainted 6.6.0-syzkaller-15494-g6bc986ab839c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:taprio_set_budgets+0x17e/0x310 net/sched/sch_taprio.c:680 Code: 0f 4c 8b 70 20 0f 87 6e 01 00 00 4c 89 e8 48 c1 e8 03 42 80 3c 38 00 0f 85 4f 01 00 00 49 69 45 00 e8 03 00 00 31 d2 49 f7 f6 <49> 89 c6 e8 0a e2 e3 f8 49 83 fc 10 0f 87 e3 00 00 00 be 04 00 00 RSP: 0000:ffffc900001f0d20 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff888018762884 RCX: ffffffff88a4be37 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880213c92e0 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffed100427925c R10: ffff8880213c92e7 R11: ffff8880b993d600 R12: 0000000000000001 R13: ffff888018762808 R14: 0000000000000190 R15: dffffc0000000000 FS: 00007f54bcebd740(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f54bcfd5920 CR3: 0000000027797000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: advance_sched+0x5de/0xc60 net/sched/sch_taprio.c:988 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x203/0xc10 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+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1082 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:lock_release+0x3b8/0x680 kernel/locking/lockdep.c:5761 Code: 7e 83 f8 01 0f 85 dd 01 00 00 9c 58 f6 c4 02 0f 85 c8 01 00 00 48 f7 04 24 00 02 00 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c5 48 c7 45 00 00 00 00 00 c7 45 08 00 00 00 00 48 8b 84 24 RSP: 0000:ffffc90004d67e08 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: ffffffffffffffff RCX: 0000000000000004 RDX: 1ffff110049fe157 RSI: ffffffff8accbc20 RDI: ffffffff8b2eee80 RBP: 1ffff920009acfc3 R08: 0000000000000001 R09: fffffbfff23e41d0 R10: ffffffff91f20e87 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000002 R14: ffff888024ff0ab8 R15: ffff888024ff0000 up_read+0x16/0x20 kernel/locking/rwsem.c:1621 vma_end_read include/linux/mm.h:687 [inline] do_user_addr_fault+0x608/0x1000 arch/x86/mm/fault.c:1366 handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x5c/0xd0 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x7f54bcfd5920 Code: 84 99 fe ff ff f3 0f bc c0 31 c9 40 3a 34 02 75 c4 48 01 d0 e9 15 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 f9 6e c6 89 f8 25 ff 0f 00 00 c4 e2 7d 78 c0 c5 f1 ef c9 3d e0 RSP: 002b:00007ffe99ba15f8 EFLAGS: 00010246 RAX: 00007ffe99ba1cb0 RBX: 0000000000000000 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000025 RDI: 00005603838fea4d RBP: 00007ffe99ba1b20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffe99ba1c98 R13: 00000000fbad8001 R14: 00007ffe99ba1c98 R15: 00007ffe99ba1c10