rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2630 jiffies s: 1801 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: 4534 Comm: udevd Not tainted 6.9.0-rc5-syzkaller-00159-gc942a0cd3603 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:debug_lockdep_rcu_enabled+0x21/0x40 kernel/rcu/update.c:321 Code: 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 83 3d 27 fb 28 04 00 74 1e 83 3d 86 2d 29 04 00 74 15 65 48 8b 0c 25 c0 d3 03 00 <31> c0 83 b9 d4 0a 00 00 00 0f 94 c0 e9 39 3c 30 00 66 2e 0f 1f 84 RSP: 0018:ffffc90000007c88 EFLAGS: 00000002 RAX: 0000000000000000 RBX: ffff88807936c036 RCX: ffff88804bc35a00 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000007c00 RBP: dffffc0000000000 R08: 0000000000000003 R09: fffff52000000f80 R10: dffffc0000000000 R11: fffff52000000f80 R12: 0000000000000002 R13: ffffffff898a1360 R14: ffff88802cd5e340 R15: ffff88804bc364c0 FS: 00007f3929da7c80(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557aa81938 CR3: 000000004ba40000 CR4: 0000000000350ef0 Call Trace: advance_sched+0xb0/0xca0 net/sched/sch_taprio.c:925 __run_hrtimer kernel/time/hrtimer.c:1692 [inline] __hrtimer_run_queues+0x5a7/0xd50 kernel/time/hrtimer.c:1756 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x112/0x3f0 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 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_release+0x630/0x9f0 kernel/locking/lockdep.c:5778 Code: 3c 3b 00 74 08 4c 89 f7 e8 3d bc 87 00 f6 84 24 91 00 00 00 02 75 77 41 f7 c5 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 4b c7 44 27 08 00 00 00 00 65 48 8b 04 25 RSP: 0018:ffffc90009297680 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92001252ee2 RCX: ffffc90009297703 RDX: 0000000000000000 RSI: ffffffff8bcaca20 RDI: ffffffff8c1f96e0 RBP: ffffc900092977a8 R08: ffffffff8fa8feef R09: 1ffffffff1f51fdd R10: dffffc0000000000 R11: fffffbfff1f51fde R12: 1ffff92001252edc R13: 0000000000000246 R14: ffffc90009297710 R15: dffffc0000000000 kernfs_put_active+0x70/0x130 fs/kernfs/dir.c:462 kernfs_fop_open+0xb31/0xd10 do_dentry_open+0x909/0x15a0 fs/open.c:955 do_open fs/namei.c:3642 [inline] path_openat+0x2860/0x3240 fs/namei.c:3799 do_filp_open+0x235/0x490 fs/namei.c:3826 do_sys_openat2+0x13e/0x1d0 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1432 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: 0033:0x7f39299169a4 Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007fff2107eec0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f39299169a4 RDX: 0000000000080000 RSI: 00007fff2107eff8 RDI: 00000000ffffff9c RBP: 00007fff2107eff8 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 00005618a97a4b42 R14: 0000000000000001 R15: 0000000000000000