rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P47/1:b..l
rcu: (detected by 1, t=14030 jiffies, g=163489, q=1105 ncpus=2)
task:kworker/u4:3 state:R running task stack:25776 pid:47 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7022
irqentry_exit+0x35/0x80 kernel/entry/common.c:433
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5729
Code: c1 05 d5 6e 9b 7e 83 f8 01 0f 85 b0 02 00 00 9c 58 f6 c4 02 0f 85 9b 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: 0018:ffffc90000b87a98 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000170f55 RCX: 0000000000000001
RDX: 1ffff11002ecd510 RSI: ffffffff8a6c83a0 RDI: ffffffff8ac81200
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff2309dd0
R10: ffffffff9184ee87 R11: 000000003eebce57 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8c9a7400 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
rcu_read_lock include/linux/rcupdate.h:749 [inline]
batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:754 [inline]
batadv_iv_ogm_schedule_buff+0x5ba/0x1510 net/batman-adv/bat_iv_ogm.c:825
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x31e/0x8c0 net/batman-adv/bat_iv_ogm.c:1712
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
worker_thread+0x687/0x1110 kernel/workqueue.c:2751
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
rcu: rcu_preempt kthread timer wakeup didn't happen for 6379 jiffies! g163489 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=111850
rcu: rcu_preempt kthread starved for 6380 jiffies! g163489 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28224 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
schedule_timeout+0x157/0x2c0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x1ec/0xa50 kernel/rcu/tree.c:1609
rcu_gp_kthread+0x249/0x380 kernel/rcu/tree.c:1808
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3887 Comm: kworker/0:0 Not tainted 6.5.0-rc7-syzkaller-00004-gf7757129e3de #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:444 [inline]
RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline]
RIP: 0010:queued_spin_is_locked include/asm-generic/qspinlock.h:57 [inline]
RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:100 [inline]
RIP: 0010:do_raw_spin_unlock+0x64/0x230 kernel/locking/spinlock_debug.c:140
Code: 7b 04 ad 4e ad de 0f 85 71 01 00 00 be 04 00 00 00 48 89 df e8 fd 92 72 00 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 68
RSP: 0018:ffffc90000007d08 EFLAGS: 00000806
RAX: dffffc0000000000 RBX: ffffffff92346ac8 RCX: ffffffff81678943
RDX: 1ffffffff2468d59 RSI: 0000000000000004 RDI: ffffffff92346ac8
RBP: 0000000000000002 R08: 0000000000000000 R09: fffffbfff2468d59
R10: ffffffff92346acb R11: 0000000000000000 R12: 0000000000000001
R13: 1ffff92000000fac R14: ffffffff8a6efbe0 R15: ffff88807d707340
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f74f25da866 CR3: 000000000c776000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:150 [inline]
_raw_spin_unlock_irqrestore+0x22/0x70 kernel/locking/spinlock.c:194
debug_object_deactivate lib/debugobjects.c:805 [inline]
debug_object_deactivate+0x28b/0x320 lib/debugobjects.c:771
debug_hrtimer_deactivate kernel/time/hrtimer.c:427 [inline]
debug_deactivate kernel/time/hrtimer.c:483 [inline]
__run_hrtimer kernel/time/hrtimer.c:1656 [inline]
__hrtimer_run_queues+0x470/0xc10 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1098 [inline]
__sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1115
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1109
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:curve25519_ever64_base+0x2d1/0x770 arch/x86/crypto/curve25519-x86_64.c:1567
Code: 44 89 e6 bf 3f 00 00 00 48 8b 28 e8 39 a3 3c 00 41 83 fc 3f 0f 87 df 8d de 08 e8 ba a7 3c 00 44 89 e1 48 8d 84 24 d0 00 00 00 <48> d3 ed 83 e5 01 48 31 eb 48 83 c3 ff 4d 8b 07 4c 8b 08 4d 89 c2
RSP: 0018:ffffc900033ef680 EFLAGS: 00000293
RAX: ffffc900033ef750 RBX: 0000000000000000 RCX: 0000000000000037
RDX: ffff8880321abb80 RSI: ffffffff814960e6 RDI: 0000000000000005
RBP: 738e5083e6300105 R08: 0000000000000005 R09: 000000000000003f
R10: 0000000000000037 R11: b8b8cce445c2f078 R12: 0000000000000037
R13: ffffc900033ef790 R14: ffffc900033ef7b0 R15: ffffc900033ef710
curve25519_base_arch+0x23/0x50 arch/x86/crypto/curve25519-x86_64.c:1609
curve25519_generate_public include/crypto/curve25519.h:55 [inline]
wg_noise_handshake_create_response+0x318/0x620 drivers/net/wireguard/noise.c:689
wg_packet_send_handshake_response+0xe1/0x300 drivers/net/wireguard/send.c:94
wg_receive_handshake_packet+0x248/0xbd0 drivers/net/wireguard/receive.c:154
wg_packet_handshake_receive_worker+0x17f/0x3a0 drivers/net/wireguard/receive.c:213
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
worker_thread+0x687/0x1110 kernel/workqueue.c:2751
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304