rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 4209 jiffies s: 48741 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: 12392 Comm: syz-executor Not tainted 6.10.0-rc6-syzkaller-00210-gd270dd21bee0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:preempt_count_sub+0xfb/0x170 kernel/sched/core.c:5897
Code: 75 74 83 3d 26 dd 47 0e 00 75 19 90 48 c7 c7 40 47 ca 8b 48 c7 c6 20 48 ca 8b e8 f0 b6 f2 ff 90 0f 0b 90 90 90 e9 6b ff ff ff <48> c7 c1 e0 f6 79 94 80 e1 07 80 c1 03 38 c1 0f 8c 1b ff ff ff 48
RSP: 0018:ffffc90000a189e8 EFLAGS: 00000002
RAX: 0000000000000004 RBX: 0000000000000001 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffff88802a79e8c8 R08: ffff88802a30b2eb R09: 1ffff1100546165d
R10: dffffc0000000000 R11: ffffed100546165e R12: dffffc0000000000
R13: ffff88802a79e808 R14: dffffc0000000000 R15: ffff88802a30b340
FS:  0000555587d63500(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f148f504000 CR3: 00000000660c6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x28/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 advance_sched+0x9b4/0xca0 net/sched/sch_taprio.c:981
 __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+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:variable_ffs arch/x86/include/asm/bitops.h:321 [inline]
RIP: 0010:handle_softirqs+0x1df/0x970 kernel/softirq.c:542
Code: 89 7c 24 70 0f b7 db 48 c7 c7 40 b0 c9 8b e8 a8 02 2c 0a 65 66 c7 05 56 d2 a9 7e 00 00 e8 f9 88 43 00 fb 49 c7 c4 c0 a0 00 8e <b8> ff ff ff ff 0f bc c3 41 89 c7 41 ff c7 0f 84 e6 03 00 00 89 5c
RSP: 0018:ffffc90000a18e40 EFLAGS: 00000286
RAX: 303db9b10f044100 RBX: 0000000000000286 RCX: ffffffff9479f603
RDX: dffffc0000000000 RSI: ffffffff8bcabb40 RDI: ffffffff8c1fe9c0
RBP: ffffc90000a18f50 R08: ffffffff8fad496f R09: 1ffffffff1f5a92d
R10: dffffc0000000000 R11: fffffbfff1f5a92e R12: ffffffff8e00a0c0
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920001431dc
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 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:arch_stack_walk+0x143/0x1b0 arch/x86/kernel/stacktrace.c:27
Code: 70 ff ff ff 4c 89 ff e8 2b 7f 09 00 48 89 c3 31 ff 48 89 c6 e8 7e bd 5e 00 48 85 db 74 31 4c 89 f7 48 89 de 4d 89 eb 41 ff d3 <66> 90 84 c0 74 26 4c 89 ff e8 bf 80 09 00 83 bd 70 ff ff ff 00 74
RSP: 0018:ffffc90009717480 EFLAGS: 00000286
RAX: 0000000000000001 RBX: ffffffff8205efab RCX: ffff888029741e00
RDX: dffffc0000000000 RSI: ffffffff8205efab RDI: ffffc9000971756c
RBP: ffffc90009717510 R08: 0000000000000000 R09: ffffc90009717570
R10: 0000000000000003 R11: ffffffff8181dd90 R12: ffff888029741e00
R13: ffffffff8181dd90 R14: ffffc90009717560 R15: ffffc90009717480
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 save_stack+0xfb/0x1f0 mm/page_owner.c:156
 __set_page_owner+0x92/0x800 mm/page_owner.c:320
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1473
 prep_new_page mm/page_alloc.c:1481 [inline]
 get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3425
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4683
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
 vm_area_alloc_pages mm/vmalloc.c:3575 [inline]
 __vmalloc_area_node mm/vmalloc.c:3651 [inline]
 __vmalloc_node_range_noprof+0x971/0x1460 mm/vmalloc.c:3832
 vmalloc_user_noprof+0x74/0x80 mm/vmalloc.c:3986
 kcov_ioctl+0x59/0x640 kernel/kcov.c:706
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
 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: 0033:0x7f148f3757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007ffd29e5b3c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f148f3757db
RDX: 0000000000040000 RSI: ffffffff80086301 RDI: 00000000000000e1
RBP: 00007f148f504790 R08: 00000000000000da R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000c
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009
 </TASK>