rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4038/1:b..l
(detected by 0, t=10502 jiffies, g=25565, q=105 ncpus=2)
task:kworker/u4:14 state:R running task stack:25240 pid:4038 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
irqentry_exit+0x53/0x80 kernel/entry/common.c:439
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:658
RIP: 0010:__preempt_count_add kernel/rcu/tree.c:717 [inline]
RIP: 0010:rcu_is_watching+0x4/0xb0 kernel/rcu/tree.c:720
Code: 21 02 0f 84 02 ff ff ff e9 6c ff ff ff 48 c7 c7 20 19 33 8d 4c 89 f6 e8 3a 9b f0 02 e9 2b ff ff ff e8 20 c3 31 09 41 57 41 56 <53> 65 ff 05 0c 17 8f 7e e8 5f db 31 09 89 c3 83 f8 08 73 76 49 bf
RSP: 0018:ffffc90005d3fbe0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff888021629dc0
RDX: ffff888021629dc0 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8a75f39a R09: fffffbfff20e7245
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888021ec4c80
R13: 00000000000000d3 R14: ffff88805f538340 R15: dffffc0000000000
rcu_read_unlock include/linux/rcupdate.h:820 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x203/0x610 net/batman-adv/network-coding.c:719
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: rcu_preempt kthread timer wakeup didn't happen for 10525 jiffies! g25565 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=14813
rcu: rcu_preempt kthread starved for 10526 jiffies! g25565 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:26712 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
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: 6374 Comm: syz.4.753 Not tainted 6.1.103-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline]
RIP: 0010:wrmsr arch/x86/include/asm/msr.h:254 [inline]
RIP: 0010:native_apic_msr_write+0x35/0x50 arch/x86/include/asm/apic.h:206
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 89 f6 31 d2 e9 5f 11 29 03 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc900001e0e60 EFLAGS: 00000046
RAX: 000000000006fde0 RBX: ffffffff8cd88a20 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 000000000006fde0 RDI: 0000000000000838
RBP: 000000000006fde0 R08: ffffffff817ce88d R09: fffffbfff1d33896
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b99271c0
R13: dffffc0000000000 R14: 000000000006fde0 R15: dffffc0000000000
FS: 00005555573f6500(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000536d1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
apic_write arch/x86/include/asm/apic.h:394 [inline]
lapic_next_event+0x5b/0x70 arch/x86/kernel/apic/apic.c:478
clockevents_program_event+0x1c5/0x310 kernel/time/clockevents.c:334
hrtimer_interrupt+0x546/0x980 kernel/time/hrtimer.c:1825
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: a1 9d f5 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 6e 1a bb f6 48 89 df e8 d6 57 bc f6 e8 c1 e5 e1 f6 fb bf 01 00 00 00 c6 e8 ae f6 65 8b 05 67 f1 52 75 85 c0 74 02 5b c3 e8 14 15 51
RSP: 0018:ffffc90010fdfb30 EFLAGS: 00000286
RAX: 368fa3af0febf100 RBX: ffff88805b9e0000 RCX: ffffffff91f31103
RDX: dffffc0000000000 RSI: ffffffff8b0c0260 RDI: 0000000000000001
RBP: ffffc90010fdfc70 R08: dffffc0000000000 R09: ffffed100b73c001
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100b73c093
R13: 000000001c000004 R14: 0000000000000021 R15: ffff88805b9e0498
spin_unlock_irq include/linux/spinlock.h:401 [inline]
get_signal+0x154b/0x17d0 kernel/signal.c:2873
arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f36e4d779f9
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:00007fff6c19f708 EFLAGS: 00000246
RAX: fffffffffffffffc RBX: 0000000000041473 RCX: 00007f36e4d779f9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f36e4f06064
RBP: 00007f36e4f06064 R08: 0000000000000010 R09: 00007fff6c19f9ef
R10: 00007fff6c19f800 R11: 0000000000000246 R12: 0000000000000032
R13: 00007fff6c19f800 R14: 00007fff6c19f820 R15: 0000000000041441