INFO: rcu detected stall in ieee80211_handle_queued

Kernel	Title	Rank 🛈	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	INFO: rcu detected stall in ieee80211_handle_queued_frames wireless	1	C	error	522	1h08m	441d	0/29	upstream: reported C repro on 2024/06/15 21:07
linux-5.15	INFO: rcu detected stall in ieee80211_handle_queued_frames	1			1	198d	198d	0/3	auto-obsoleted due to no activity on 2025/05/24 12:07
linux-6.1	INFO: rcu detected stall in ieee80211_handle_queued_frames (2)	1			1	219d	219d	0/3	auto-obsoleted due to no activity on 2025/05/04 02:50
linux-6.6	INFO: rcu detected stall in ieee80211_handle_queued_frames	1			1	42d	42d	0/2	upstream: reported on 2025/07/19 16:58
linux-6.1	INFO: rcu detected stall in ieee80211_handle_queued_frames	1			4	349d	369d	0/3	auto-obsoleted due to no activity on 2024/12/24 22:17

rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=40f/1/0x4000000000000000 softirq=14958/14961 fqs=5235 
	(t=10502 jiffies g=20773 q=1575)
NMI backtrace for cpu 0
CPU: 0 PID: 6468 Comm: syz.2.450 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <IRQ>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x397/0x3d0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0x22f/0x380 kernel/rcu/tree_stall.h:349
 print_cpu_stall+0x31d/0x5f0 kernel/rcu/tree_stall.h:633
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3936 [inline]
 rcu_sched_clock_irq+0x6d8/0x1110 kernel/rcu/tree.c:2619
 update_process_times+0x193/0x200 kernel/time/timer.c:1818
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1690 [inline]
 __hrtimer_run_queues+0x4fe/0xc40 kernel/time/hrtimer.c:1754
 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1816
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:debug_lockdep_rcu_enabled+0x25/0x30 kernel/rcu/update.c:281
Code: 00 00 cc cc 00 31 c0 83 3d 8b 3c c1 03 00 74 1d 83 3d 02 6f c1 03 00 74 14 65 48 8b 0d 74 3c 5a 76 31 c0 83 b9 ec 0a 00 00 00 <0f> 94 c0 c3 00 00 cc cc 00 00 cc 41 56 53 89 fb e8 16 0a 00 00 41
RSP: 0018:ffffc900000075b8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000007 RCX: ffff888028139dc0
RDX: 0000000000000100 RSI: 0000000000000007 RDI: 0000000000000009
RBP: 0000000000000001 R08: ffff888028139dc0 R09: 0000000000000003
R10: 00000000000000d0 R11: 0000000000000100 R12: 0000000000000006
R13: 1ffff92000000f64 R14: 0000000000000000 R15: 0000000000000007
 ieee80211_rx_get_bigtk+0x20f/0x490 net/mac80211/rx.c:1894
 ieee80211_rx_h_decrypt net/mac80211/rx.c:2026 [inline]
 ieee80211_rx_handlers+0x2668/0x8470 net/mac80211/rx.c:3937
 ieee80211_invoke_rx_handlers net/mac80211/rx.c:3989 [inline]
 ieee80211_prepare_and_rx_handle+0x1d8e/0x5250 net/mac80211/rx.c:4703
 __ieee80211_rx_handle_packet net/mac80211/rx.c:4863 [inline]
 ieee80211_rx_list+0x1ba1/0x2680 net/mac80211/rx.c:4986
 ieee80211_rx_napi+0x15d/0x360 net/mac80211/rx.c:5009
 ieee80211_rx include/net/mac80211.h:4571 [inline]
 ieee80211_handle_queued_frames+0x105/0x1b0 net/mac80211/main.c:237
 tasklet_action_common+0x298/0x400 kernel/softirq.c:806
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:preempt_schedule_irq+0xac/0x150 kernel/sched/core.c:6780
Code: 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 70 bf 01 00 00 00 e8 cf f6 a0 f7 e8 6a 6a cd f7 fb bf 01 00 00 00 <e8> cf b5 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc900031ffa80 EFLAGS: 00000282
RAX: d4bc5ff451d2e500 RBX: 0000000000000000 RCX: d4bc5ff451d2e500
RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: 0000000000000001
RBP: ffffc900031ffb20 R08: dffffc0000000000 R09: ffffed101720765a
R10: ffffed101720765a R11: 1ffff11017207659 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200063ff50
 irqentry_exit+0x63/0x70 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:___might_sleep+0x5b/0x600 kernel/sched/core.c:9598
Code: 24 c0 00 00 00 49 bc 00 00 00 00 00 fc ff df 48 c7 44 24 40 b3 8a b5 41 48 c7 44 24 48 ec 59 b9 8b 48 c7 44 24 50 00 03 53 81 <48> 8d 5c 24 40 48 c1 eb 03 48 b8 f1 f1 f1 f1 00 f2 f2 f2 4a 89 04
RSP: 0018:ffffc900031ffbe0 EFLAGS: 00000282
RAX: d4bc5ff451d2e500 RBX: ffff888028139dc0 RCX: ffff888028139dc0
RDX: 0000000000000000 RSI: 0000000000000075 RDI: ffffffff8a5c1bc0
RBP: ffffc900031ffce8 R08: 0000000000001100 R09: ffff88802997d500
R10: 00000000d9cee08b R11: 00000000fe3ec2d3 R12: dffffc0000000000
R13: ffff88802997d520 R14: ffffffff8a5c1bc0 R15: 0000000000000000
 __might_fault+0x6b/0x110 mm/memory.c:5354
 strncpy_from_user+0x2d/0x360 lib/strncpy_from_user.c:117
 getname_flags+0xef/0x500 fs/namei.c:149
 do_sys_openat2+0xcf/0x4a0 fs/open.c:1247
 do_sys_open fs/open.c:1269 [inline]
 __do_sys_openat fs/open.c:1285 [inline]
 __se_sys_openat fs/open.c:1280 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1280
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f3fcb726be9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3fc998e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f3fcb94dfa0 RCX: 00007f3fcb726be9
RDX: 0000000000000040 RSI: 0000200000000280 RDI: ffffffffffffff9c
RBP: 00007f3fcb7a9e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3fcb94e038 R14: 00007f3fcb94dfa0 R15: 00007fffb8c304f8
 </TASK>