INFO: rcu detected stall in ieee80211_handle_queued_frames (2)

Status: auto-obsoleted due to no activity on 2025/05/04 02:50
Reported-by: syzbot+7f3bd5a7710d2e85daee@syzkaller.appspotmail.com
First crash: 573d, last: 573d
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: rcu detected stall in ieee80211_handle_queued_frames (3) origin:lts-only 1 syz, C inconclusive 15 1h58m 288d 0/3 upstream: reported C repro on 2025/11/04 22:16
upstream INFO: rcu detected stall in ieee80211_handle_queued_frames wireless 1 syz, C error 838 2d23h 795d 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 553d 553d 0/3 auto-obsoleted due to no activity on 2025/05/24 12:07
linux-5.15 INFO: rcu detected stall in ieee80211_handle_queued_frames (2) 1 40 1d20h 357d 0/3 upstream: reported on 2025/08/28 08:46
linux-6.6 INFO: rcu detected stall in ieee80211_handle_queued_frames 1 1 397d 397d 0/2 auto-obsoleted due to no activity on 2025/10/27 16:58
linux-6.1 INFO: rcu detected stall in ieee80211_handle_queued_frames 1 4 703d 723d 0/3 auto-obsoleted due to no activity on 2024/12/24 22:17

Sample crash report:
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 3079 jiffies s: 1521 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: 4383 Comm: syz.1.2 Not tainted 6.1.127-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:215
Code: 00 0f 0b 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d c8 8c 10 0d 48 89 de 5b e9 17 bc 56 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0d 94 d2 77 7e 65 8b 15 95 d2 77 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc90000006e78 EFLAGS: 00000046
RAX: ffffffff8101215b RBX: 0000000000000007 RCX: ffff888027de8000
RDX: ffff888027de8000 RSI: 0000000000000007 RDI: 0000000000000007
RBP: ffffc90000006fd0 R08: ffffffff81011fbe R09: ffffc90000006f50
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffffffff81545345 R14: 1ffff92000000ddc R15: 0000000000000007
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff2d1301d8 CR3: 000000005d74a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 perf_callchain_store include/linux/perf_event.h:1384 [inline]
 perf_callchain_kernel+0x55b/0x620 arch/x86/events/core.c:2807
 get_perf_callchain+0x579/0x810 kernel/events/callchain.c:200
 perf_callchain kernel/events/core.c:7488 [inline]
 perf_prepare_sample+0x390/0x1fb0 kernel/events/core.c:7521
 __perf_event_output kernel/events/core.c:7706 [inline]
 perf_event_output_forward+0x1b7/0x330 kernel/events/core.c:7726
 __perf_event_overflow+0x45e/0x640 kernel/events/core.c:9472
 perf_swevent_hrtimer+0x38e/0x4f0 kernel/events/core.c:10880
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x5a7/0xe50 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:kcov_remote_start+0x27/0x7c0 kernel/kcov.c:932
Code: 44 00 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 18 65 48 8b 1d 2a cb 77 7e 48 b8 00 00 00 00 ff ff ff 00 48 85 c7 74 11 0f 0b <48> 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 fd 48 89 f8 48
RSP: 0018:ffffc90000007930 EFLAGS: 00000206
RAX: c27460b5d4325300 RBX: ffff888027de8000 RCX: ffffffff816b127a
RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: ffffffff8b5e67c0
RBP: ffff8880b8e2b030 R08: dffffc0000000000 R09: fffffbfff224a04d
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff818aa48c
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000000
 kcov_remote_start_common include/linux/kcov.h:50 [inline]
 ieee80211_rx_list+0x603/0x3380 net/mac80211/rx.c:5268
 ieee80211_rx_napi+0x186/0x3b0 net/mac80211/rx.c:5309
 ieee80211_rx include/net/mac80211.h:4831 [inline]
 ieee80211_handle_queued_frames+0x103/0x1b0 net/mac80211/main.c:317
 tasklet_action_common+0x3cb/0x4a0
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
 __do_softirq kernel/softirq.c:605 [inline]
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
 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:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
Code: 2b 00 74 08 4c 89 f7 e8 ff 8b 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900042971a0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000852e40 RCX: ffffffff816b5eb2
RDX: dffffc0000000000 RSI: ffffffff8b0c14c0 RDI: ffffffff8b5e67c0
RBP: ffffc900042972f8 R08: dffffc0000000000 R09: fffffbfff224a04d
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000852e3c
R13: dffffc0000000000 R14: ffffc90004297200 R15: 0000000000000246
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 zap_pte_range mm/memory.c:1417 [inline]
 zap_pmd_range mm/memory.c:1574 [inline]
 zap_pud_range mm/memory.c:1603 [inline]
 zap_p4d_range mm/memory.c:1624 [inline]
 unmap_page_range+0xacc/0x2740 mm/memory.c:1645
 unmap_vmas+0x48b/0x640 mm/memory.c:1730
 exit_mmap+0x249/0x980 mm/mmap.c:3238
 __mmput+0x115/0x3c0 kernel/fork.c:1200
 exit_mm+0x226/0x300 kernel/exit.c:565
 do_exit+0x9f1/0x26a0 kernel/exit.c:858
 do_group_exit+0x202/0x2b0 kernel/exit.c:1021
 get_signal+0x16f7/0x17d0 kernel/signal.c:2871
 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3d34f8b690
Code: Unable to access opcode bytes at 0x7f3d34f8b666.
RSP: 002b:00007f3d35d3bf10 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: 0000000000000006 RBX: 0000000000000002 RCX: 00007f3d34f8b690
RDX: 0000000000000002 RSI: 00007f3d35d3bfa0 RDI: 00000000ffffff9c
RBP: 00007f3d35d3bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3d351a5fa0 R15: 00007ffcdb889938
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/24 02:49 linux-6.1.y 75cefdf153f5 521b0ce3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in ieee80211_handle_queued_frames
* Struck through repros no longer work on HEAD.