rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2680 jiffies s: 3341 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 UID: 0 PID: 5371 Comm: udevd Not tainted 6.11.0-rc7-syzkaller-01520-g3254ce83899b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:lock_acquire+0x26/0x550 kernel/locking/lockdep.c:5727 Code: 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 24 38 <48> 89 4c 24 30 89 54 24 1c 41 89 f6 48 89 7c 24 20 65 48 8b 04 25 RSP: 0018:ffffc90000007b20 EFLAGS: 00000082 RAX: 0000000000000001 RBX: ffffffff89c028e2 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e938320 RBP: ffffc90000007c78 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed100644905e R12: dffffc0000000000 R13: ffff888030fa0808 R14: ffff888030fa0800 R15: ffff888032248360 FS: 00007fda27a93c80(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe4a5937a8c CR3: 000000002ab54000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] rcu_read_lock include/linux/rcupdate.h:838 [inline] advance_sched+0xa1e/0xca0 net/sched/sch_taprio.c:985 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815 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 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_is_held_type+0x13b/0x190 Code: 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 42 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f RSP: 0018:ffffc9000357fb38 EFLAGS: 00000206 RAX: bd39e382838cda00 RBX: 0000000000000000 RCX: ffff88802da51e00 RDX: 0000000000000000 RSI: ffffffff8c0ae6e0 RDI: ffffffff8c608fc0 RBP: ffffc9000357fca0 R08: ffffffff901830af R09: 1ffffffff2030615 R10: dffffc0000000000 R11: fffffbfff2030616 R12: 0000000000000246 R13: ffff88802da51e00 R14: 00000000ffffffff R15: ffffffff8e9382a0 lock_is_held include/linux/lockdep.h:249 [inline] __might_resched+0xf4/0x780 kernel/sched/core.c:8425 might_alloc include/linux/sched/mm.h:337 [inline] slab_pre_alloc_hook mm/slub.c:3943 [inline] slab_alloc_node mm/slub.c:4021 [inline] kmem_cache_alloc_noprof+0x5d/0x2a0 mm/slub.c:4048 getname_flags+0xb7/0x540 fs/namei.c:139 do_sys_openat2+0xd2/0x1d0 fs/open.c:1410 do_sys_open fs/open.c:1431 [inline] __do_sys_openat fs/open.c:1447 [inline] __se_sys_openat fs/open.c:1442 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1442 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fda27b5e9a4 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:00007ffdccf0ff60 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000557a8c56a070 RCX: 00007fda27b5e9a4 RDX: 0000000000080000 RSI: 0000557a8c553a50 RDI: 00000000ffffff9c RBP: 0000557a8c553a50 R08: 0000557a8c553a50 R09: 0000000000000040 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 0000000000000702 R14: 0000000000000000 R15: 0000000000000001