rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7039/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=31089, q=124 ncpus=2)
task:kworker/u8:29 state:R running task stack:25480 pid:7039 tgid:7039 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound cfg80211_wiphy_work
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7190
irqentry_exit+0x1d8/0x8c0 kernel/entry/common.c:216
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:unwind_next_frame+0x11c7/0x20b0 arch/x86/kernel/unwind_orc.c:536
Code: f7 0f 85 34 0c 00 00 83 e0 07 38 c2 40 0f 9e c6 84 d2 0f 95 c0 40 84 c6 0f 85 1d 0c 00 00 4c 0f bf 31 4d 01 fe e9 67 f6 ff ff <48> b8 00 00 00 00 00 fc ff df 49 8d 7d 40 48 89 fa 48 c1 ea 03 80
RSP: 0018:ffffc9000489f268 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff91cba0d6
RDX: 0000000000000005 RSI: 0000000000000001 RDI: ffffffff910f56e0
RBP: ffffc9000489f320 R08: ffffffff91cba0da R09: 0000000011653447
R10: 0000000000000002 R11: 000000000009eb07 R12: ffffc9000489f328
R13: ffffc9000489f2d8 R14: 0000000000000004 R15: 0000000000000000
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
kasan_save_track+0x14/0x30 mm/kasan/common.c:77
poison_kmalloc_redzone mm/kasan/common.c:397 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:414
kasan_kmalloc include/linux/kasan.h:262 [inline]
__do_kmalloc_node mm/slub.c:5657 [inline]
__kmalloc_noprof+0x33d/0x910 mm/slub.c:5669
kmalloc_noprof include/linux/slab.h:961 [inline]
kzalloc_noprof include/linux/slab.h:1094 [inline]
ieee802_11_parse_elems_full+0x1db/0x3780 net/mac80211/parse.c:1031
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2469 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1571 [inline]
ieee80211_ibss_rx_queued_mgmt+0xc85/0x2fc0 net/mac80211/ibss.c:1602
ieee80211_iface_process_skb net/mac80211/iface.c:1736 [inline]
ieee80211_iface_work+0xe28/0x1350 net/mac80211/iface.c:1790
cfg80211_wiphy_work+0x3fb/0x560 net/wireless/core.c:438
process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257
process_scheduled_works kernel/workqueue.c:3340 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
rcu: rcu_preempt kthread starved for 10542 jiffies! g31089 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:28320 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1ea/0xaf0 kernel/rcu/tree.c:2083
rcu_gp_kthread+0x26d/0x380 kernel/rcu/tree.c:2285
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 9804 Comm: syz.0.870 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:syscall_enter_from_user_mode_work include/linux/entry-common.h:75 [inline]
RIP: 0010:syscall_enter_from_user_mode include/linux/entry-common.h:109 [inline]
RIP: 0010:do_syscall_64+0x9a/0xf80 arch/x86/entry/syscall_64.c:90
Code: 00 48 8b 7d 08 e8 16 82 00 00 0f 1f 44 00 00 0f 1f 44 00 00 90 e8 26 8a 4f f6 90 90 e8 1f 88 4f f6 fb 65 48 8b 05 fe 2e 3b 08 <48> 8b 50 08 f6 c2 3f 0f 85 79 03 00 00 90 90 41 81 fc d6 01 00 00
RSP: 0018:ffffc90003017f18 EFLAGS: 00000206
RAX: ffff888034b4c980 RBX: ffffc90003017f48 RCX: ffffffff81c7083f
RDX: 0000000000000000 RSI: ffffffff8dacde3b RDI: ffffffff8bf2b380
RBP: ffffc90003017f38 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff9088b3d7 R11: 0000000000000000 R12: 00000000000000ca
R13: 00000000000000ca R14: 0000000000000000 R15: 0000000000000000
FS: 00007f357f1786c0(0000) GS:ffff8881248f5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f66f75065f0 CR3: 000000004718d000 CR4: 00000000003526f0
Call Trace:
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f357e38f749
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:00007f357f1780e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f357e5e5fa8 RCX: 00007f357e38f749
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f357e5e5fa8
RBP: 00007f357e5e5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f357e5e6038 R14: 00007ffd47d5ac50 R15: 00007ffd47d5ad38