rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=185817, q=181 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295072306-4295061804), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g185817 f0x2 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:27904 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0xedb/0x5af0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0xe9/0x270 kernel/sched/core.c:6778
 schedule_timeout+0x137/0x290 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x1ec/0xb10 kernel/rcu/tree.c:1631
 rcu_gp_kthread+0x24b/0x380 kernel/rcu/tree.c:1830
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </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 PID: 3137 Comm: kworker/u4:14 Not tainted 6.7.0-rc6-syzkaller-01631-g3b83fa94cf31 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:kasan_check_range+0x12/0x190 mm/kasan/generic.c:186
Code: c4 dd ff ff 89 43 08 5b 5d 41 5c c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 66 0f 1f 00 48 85 f6 0f 84 48 01 00 00 48 89 f8 41 54 <44> 0f b6 c2 48 01 f0 55 53 0f 82 c6 00 00 00 48 b8 ff ff ff ff ff
RSP: 0000:ffffc900001f0e08 EFLAGS: 00000002
RAX: ffffffff8f190d10 RBX: ffff8880b992b9c0 RCX: ffffffff817626cd
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8f190d10
RBP: ffff88803c2dc340 R08: 0000000000000005 R09: 0000000000000007
R10: 0000000000000001 R11: 0000000000000004 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88803c2dc340 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5f2a622ff8 CR3: 0000000015eae000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 cpumask_test_cpu include/linux/cpumask.h:504 [inline]
 cpu_online include/linux/cpumask.h:1104 [inline]
 trace_hrtimer_start include/trace/events/timer.h:202 [inline]
 debug_activate kernel/time/hrtimer.c:478 [inline]
 enqueue_hrtimer+0x6d/0x310 kernel/time/hrtimer.c:1087
 __run_hrtimer kernel/time/hrtimer.c:1705 [inline]
 __hrtimer_run_queues+0xa12/0xc20 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x1ef/0x520 kernel/locking/lockdep.c:5722
Code: c1 05 ad 7c 9a 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0000:ffffc900036afac8 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920006d5f5b RCX: 000000006373687c
RDX: 0000000000000001 RSI: ffffffff8accb200 RDI: ffffffff8b2f0560
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff23e35d0
R10: ffffffff91f1ae87 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8cfab7a0 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
 rcu_read_lock include/linux/rcupdate.h:747 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
 batadv_nc_worker+0x16e/0x10e0 net/batman-adv/network-coding.c:719
 process_one_work+0x886/0x15d0 kernel/workqueue.c:2627
 process_scheduled_works kernel/workqueue.c:2700 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2781
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>