rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (1 GPs behind) idle=f15c/1/0x4000000000000000 softirq=36453/36454 fqs=37
rcu: 	(t=10502 jiffies g=32245 q=474 ncpus=2)
rcu: rcu_preempt kthread starved for 10381 jiffies! g32245 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:27128 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7058
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:cfg80211_inform_single_bss_data+0xa2/0x1ac0 net/wireless/scan.c:2266
Code: 44 31 1e 48 89 4c 24 58 66 42 c7 44 31 26 f3 f3 e8 63 d4 ee f6 4d 85 ff 0f 84 c4 17 00 00 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 <74> 08 4c 89 ef e8 14 da 52 f7 49 8b 45 00 48 89 44 24 28 ba d0 00
RSP: 0018:ffffc90000a08200 EFLAGS: 00000246
RAX: 1ffff920001410d8 RBX: ffffc90000a086c0 RCX: ffff88801d2b5a00
RDX: 0000000000000100 RSI: ffffc90000a086c0 RDI: ffff888021f60700
RBP: ffffc90000a083f0 R08: 0000000050505050 R09: 1ffff920001410db
R10: dffffc0000000000 R11: fffff520001410dc R12: 0000000000000820
R13: ffffc90000a086c0 R14: dffffc0000000000 R15: ffff888021f60700
FS:  0000000000000000(0000) GS:ffff888125afa000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31021ff8 CR3: 000000003252e000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 cfg80211_inform_bss_data+0x1fb/0x3b30 net/wireless/scan.c:3235
 cfg80211_inform_bss_frame_data+0x3d7/0x730 net/wireless/scan.c:3326
 ieee80211_bss_info_update+0x746/0x9e0 net/mac80211/scan.c:226
 ieee80211_scan_rx+0x593/0xa20 net/mac80211/scan.c:355
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5186 [inline]
 ieee80211_rx_list+0x201c/0x2a90 net/mac80211/rx.c:5423
 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5446
 ieee80211_rx include/net/mac80211.h:5210 [inline]
 ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:453
 tasklet_action_common+0x369/0x580 kernel/softirq.c:829
 handle_softirqs+0x286/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82
Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 91 29 00 f3 0f 1e fa fb f4 <e9> 08 e7 02 00 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000197de0 EFLAGS: 000002c6
RAX: f64860cf7b9a9e00 RBX: ffffffff81979518 RCX: f64860cf7b9a9e00
RDX: 0000000000000001 RSI: ffffffff8dbbc9d5 RDI: ffffffff8c037100
RBP: ffffc90000197f10 R08: ffff8880b8732f9b R09: 1ffff110170e65f3
R10: dffffc0000000000 R11: ffffed10170e65f4 R12: ffffffff8fc3eb30
R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff11003a56b40
 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
 default_idle+0x13/0x20 arch/x86/kernel/process.c:757
 default_idle_call+0x74/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:190 [inline]
 do_idle+0x1e8/0x510 kernel/sched/idle.c:330
 cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:428
 start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:315
 common_startup_64+0x13e/0x147
 </TASK>
CPU: 0 UID: 0 PID: 1301 Comm: aoe_tx0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 0b 40 47 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 03 d7 0f f6 65 8b 05 5c 28 41 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc9000404f660 EFLAGS: 00000206
RAX: 5c063a7e13297c00 RBX: 0000000000000a06 RCX: 5c063a7e13297c00
RDX: 0000000000000002 RSI: ffffffff8dbbc9d5 RDI: 0000000000000001
RBP: ffffc9000404f6e8 R08: ffffffff8fc3eb37 R09: 1ffffffff1f87d66
R10: dffffc0000000000 R11: fffffbfff1f87d67 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffffff9a02eb80 R15: 1ffff92000809ecc
FS:  0000000000000000(0000) GS:ffff8881259fa000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000030688000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 uart_port_unlock_irqrestore include/linux/serial_core.h:788 [inline]
 uart_port_unlock_deref+0x111/0x2f0 drivers/tty/serial/serial_core.c:91
 uart_write+0xc9/0x130 drivers/tty/serial/serial_core.c:626
 handle_tx+0x23f/0x610 drivers/net/caif/caif_serial.c:222
 __netdev_start_xmit include/linux/netdevice.h:5222 [inline]
 netdev_start_xmit include/linux/netdevice.h:5231 [inline]
 xmit_one net/core/dev.c:3839 [inline]
 dev_hard_start_xmit+0x2d7/0x830 net/core/dev.c:3855
 __dev_queue_xmit+0x1b8d/0x3b50 net/core/dev.c:4725
 dev_queue_xmit include/linux/netdevice.h:3361 [inline]
 tx+0x6b/0x190 drivers/block/aoe/aoenet.c:62
 kthread+0x1d0/0x3e0 drivers/block/aoe/aoecmd.c:1241
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>