rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (0 ticks this GP) idle=46e4/1/0x4000000000000000 softirq=52159/52159 fqs=0
rcu: (detected by 0, t=10502 jiffies, g=54373, q=621 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6082 Comm: kworker/u8:34 Not tainted 6.13.0-syzkaller-08265-g9c5968db9e62 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline]
RIP: 0010:lock_release+0xb1/0x6f0 kernel/locking/lockdep.c:5862
Code: 07 0f 87 22 05 00 00 89 ed be 08 00 00 00 48 89 e8 48 c1 e8 06 48 8d 3c c5 10 49 62 90 e8 67 31 86 00 48 0f a3 2d bf ae cb 0e <0f> 82 26 04 00 00 48 c7 c5 34 7c 62 90 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc90000a18cb8 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 1ffff92000143199 RCX: ffffffff81969a49
RDX: fffffbfff20c4923 RSI: 0000000000000008 RDI: ffffffff90624910
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff20c4922
R10: ffffffff90624917 R11: 0000000000000003 R12: ffffffff8e1be000
R13: ffff88802dfc7000 R14: ffff88805f06a340 R15: ffff88802dfc5800
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff813474f98 CR3: 0000000061eba000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:347 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
advance_sched+0x6d7/0xc60 net/sched/sch_taprio.c:987
__run_hrtimer kernel/time/hrtimer.c:1738 [inline]
__hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1802
hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1864
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:850 [inline]
RIP: 0010:batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
RIP: 0010:batadv_nc_worker+0x17b/0x1060 net/batman-adv/network-coding.c:719
Code: b9 02 00 00 00 48 c7 c7 00 e0 1b 8e 48 8d 05 00 00 00 00 50 e8 06 be 72 f6 e8 a1 79 31 00 31 ff 41 89 c4 89 c6 e8 f5 ba 95 f6 <45> 85 e4 58 0f 85 73 0a 00 00 e8 e6 bf 95 f6 48 89 d8 48 c1 e8 03
RSP: 0018:ffffc90004b87b20 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff88805ef48798 RCX: ffffffff8b23eebb
RDX: ffff8880263aa440 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00000000000000f3 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000000 R15: dffffc0000000000
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3317 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g54373 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=20796
rcu: rcu_preempt kthread starved for 10502 jiffies! g54373 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28280 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2024
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2226
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244