rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2677 jiffies s: 10089 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: 7490 Comm: syz.4.2978 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:ct_dynticks_nmi_nesting include/linux/context_tracking_state.h:92 [inline]
RIP: 0010:ct_nmi_exit+0x100/0x1c0 kernel/context_tracking.c:222
Code: df be 04 00 00 00 e8 1f f4 a2 f7 bf 04 00 00 00 e8 d5 00 00 00 65 8b 05 26 1a d2 75 eb 61 48 c7 c7 c0 e1 94 8a e8 c0 0a 00 00 <65> 48 8b 05 e0 02 d3 75 e8 93 09 00 00 41 89 c6 83 f8 08 0f 83 8a
RSP: 0018:ffffc900001e07c8 EFLAGS: 00000086
RAX: 0000000000000001 RBX: ffff8880b8f35800 RCX: bb719948ba866300
RDX: 0000000000000100 RSI: ffffffff8a94e1c0 RDI: ffffffff8adf42e0
RBP: ffffc900001e0888 R08: ffffffff8e2121af R09: 1ffffffff1c42435
R10: dffffc0000000000 R11: fffffbfff1c42436 R12: dffffc0000000000
R13: 0000000000000001 R14: 4000000000000002 R15: 0000000000000000
FS:  0000555591e65500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30d63fff CR3: 000000002f7f0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ct_irq_exit_irqson+0xaf/0x170 kernel/context_tracking.c:422
 trace_irq_enable_rcuidle+0xd8/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 52 82 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900001e0980 EFLAGS: 00000206
RAX: bb719948ba866300 RBX: 1ffff9200003c138 RCX: bb719948ba866300
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf42e0
RBP: ffffc900001e0a80 R08: ffffffff90b1033f R09: 1ffffffff2162067
R10: dffffc0000000000 R11: fffffbfff2162068 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8f3bb00 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 hsr_announce+0x2ca/0x340 net/hsr/hsr_device.c:407
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:preempt_schedule_irq+0xb6/0x160 kernel/sched/core.c:6874
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 7f bf 01 00 00 00 e8 b5 cf 1f f7 e8 b0 99 4f f7 fb bf 01 00 00 00 <e8> 25 ba ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc900038afb20 EFLAGS: 00000282
RAX: bb719948ba866300 RBX: 0000000000000000 RCX: bb719948ba866300
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: 0000000000000001
RBP: ffffc900038afbd0 R08: ffff8880b8f3580b R09: 1ffff110171e6b01
R10: dffffc0000000000 R11: ffffed10171e6b02 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000715f64
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x7e/0x80 kernel/kcov.c:315
Code: 8d 52 28 4d 39 ca 77 22 89 ff 89 f6 49 ff c0 4c 89 01 48 c7 44 11 08 05 00 00 00 48 89 7c 11 10 48 89 74 11 18 48 89 44 11 20 <c3> 90 48 8b 04 24 65 48 8b 0d b4 49 80 7e 65 8b 15 b5 49 80 7e 81
RSP: 0018:ffffc900038afc90 EFLAGS: 00000293
RAX: ffffffff8139f1a7 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff88802d4c9e00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8e2121af R09: 1ffffffff1c42435
R10: dffffc0000000000 R11: fffffbfff1c42436 R12: dffffc0000000000
R13: 0000000000000008 R14: ffffffff8139eec8 R15: ffff88813fff91e0
 __virt_addr_valid+0x467/0x540 arch/x86/mm/physaddr.c:65
 kasan_addr_to_slab+0x9/0xc0 mm/kasan/common.c:36
 __kasan_record_aux_stack+0xf/0xc0 mm/kasan/generic.c:471
 task_work_add+0x7f/0x330 kernel/task_work.c:48
 fput+0xd9/0x1a0 fs/file_table.c:376
 filp_close+0x108/0x150 fs/open.c:1439
 __range_close fs/file.c:703 [inline]
 __close_range+0x588/0x770 fs/file.c:753
 __do_sys_close_range fs/open.c:1478 [inline]
 __se_sys_close_range fs/open.c:1475 [inline]
 __x64_sys_close_range+0x76/0x80 fs/open.c:1475
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa29f79de59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff147d6198 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007fff147d6280 RCX: 00007fa29f79de59
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 000000000004431f R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b30120000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa29fa25fac R14: 00007fa29fa25fa8 R15: 00007fa29fa25fa0
 </TASK>