hrtimer: interrupt took 128779 ns
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P11/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=15725, q=456 ncpus=2)
task:kworker/u8:0    state:R  running task     stack:24112 pid:11    tgid:11    ppid:2      flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:838 [inline]
RIP: 0010:batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
RIP: 0010:batadv_nc_worker+0x147/0x1060 net/batman-adv/network-coding.c:719
Code: 89 44 24 50 e8 7a 4e b1 f6 48 8b 44 24 50 80 38 00 0f 85 0f 0e 00 00 48 8b 4c 24 40 89 e8 48 8b 11 48 8d 1c c2 e8 e9 98 97 f6 <45> 31 c9 45 31 c0 31 d2 31 f6 b9 02 00 00 00 48 c7 c7 e0 9f db 8d
RSP: 0018:ffffc90000107b90 EFLAGS: 00000293
RAX: 0000000000000001 RBX: ffff88802dad5af0 RCX: ffff88802f571500
RDX: 0000000000000000 RSI: ffffffff8ada7176 RDI: ffff888017ec4044
RBP: 000000000000035e R08: 0000000000000004 R09: 000000000000035e
R10: 0000000000000400 R11: 0000000000000000 R12: 0000000000000001
R13: 000000000003db0c R14: 0000000000000000 R15: dffffc0000000000
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: rcu_preempt kthread starved for 4460 jiffies! g15725 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:27680 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6621
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 5821 Comm: syz.3.161 Not tainted 6.11.0-rc5-syzkaller-00081-gd5d547aa7b51 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 8b 74 24 08 48 89 fb 48 83 c7 18 e8 4a 21 51 f6 48 89 df e8 62 9e 51 f6 e8 4d 7d 7a f6 fb bf 01 00 00 00 <e8> 92 11 43 f6 65 8b 05 73 4c eb 74 85 c0 74 06 5b c3 cc cc cc cc
RSP: 0018:ffffc9000ceffcf0 EFLAGS: 00000202
RAX: 000000000086ee9b RBX: ffff8880288e2500 RCX: 1ffffffff2027a69
RDX: 0000000000000000 RSI: ffffffff8b4cd740 RDI: 0000000000000001
RBP: ffff8880288e2700 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff9014179f R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000011 R14: ffff8880288e2500 R15: ffff8880288e2500
FS:  00007f04849a26c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f04849a1f00 CR3: 000000007d0e4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0x1e94/0x2770 kernel/signal.c:2920
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0483b79ef9
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:00007f04849a20e8 EFLAGS: 00000246
RAX: fffffffffffffffc RBX: 00007f0483d15f88 RCX: 00007f0483b79ef9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0483d15f88
RBP: 00007f0483d15f80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0483d15f8c
R13: 0000000000000000 R14: 00007ffcafc7fc40 R15: 00007ffcafc7fd28
 </TASK>