rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2671 jiffies s: 113881 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 27109 Comm: kworker/u4:24 Not tainted 6.7.0-rc5-syzkaller-01533-g3ab5720881a9 #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_read+0x8/0x20 mm/kasan/shadow.c:31
Code: 90 48 83 c4 60 5b 5d 41 5c c3 48 83 c4 60 48 c7 c7 e8 06 83 8c 5b 5d 41 5c e9 94 d2 8b ff 0f 1f 40 00 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 0f f4 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
RSP: 0018:ffffc900001f0ab8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff816736ee
RDX: 1ffff110040328e0 RSI: 0000000000000008 RDI: ffffffff91f1be80
RBP: 0000000000008000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000014 R11: 0000000000000003 R12: ffff8880201946e0
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32d24000 CR3: 000000004bde1000 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]
 hlock_class+0x4e/0x130 kernel/locking/lockdep.c:228
 check_wait_context kernel/locking/lockdep.c:4773 [inline]
 __lock_acquire+0x402/0x3b20 kernel/locking/lockdep.c:5087
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
 debug_objects_fill_pool lib/debugobjects.c:614 [inline]
 debug_object_activate+0x144/0x490 lib/debugobjects.c:713
 debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline]
 debug_activate kernel/time/hrtimer.c:477 [inline]
 enqueue_hrtimer+0x23/0x310 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_release+0x1b/0x690 kernel/locking/lockdep.c:5762
Code: fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 41 57 41 56 41 55 41 54 49 89 fc 55 53 <48> 81 ec 90 00 00 00 48 8d 6c 24 10 48 89 74 24 08 48 c7 44 24 10
RSP: 0018:ffffc90013fcfb80 EFLAGS: 00000293
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff8a49f614
RDX: 0000000000000000 RSI: ffffffff8a49f2ee RDI: ffffffff8cfabd20
RBP: 00000000000001f5 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000002 R12: ffffffff8cfabd20
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000001
 rcu_lock_release include/linux/rcupdate.h:306 [inline]
 rcu_read_unlock include/linux/rcupdate.h:780 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
 batadv_nc_worker+0x8f3/0x10e0 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>