GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P8035/1:b..l P3968/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=44501, q=477 ncpus=2)
task:kworker/u8:10   state:R  running task     stack:23536 pid:3968  tgid:3968  ppid:2      flags:0x00004000
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x21b/0x560 kernel/locking/lockdep.c:5763
Code: df 48 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 a8 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 e0 02 00 00 <48> 81 c4 b0 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
RSP: 0018:ffffc9000c1a7a70 EFLAGS: 00000246
RAX: 0000000000000000 RBX: fffff52001834f50 RCX: 0000000000000001
RDX: 0000000000000001 RSI: ffffffff8b4cc7e0 RDI: ffffffff8bb08ec0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff28c5ad8
R10: ffffffff9462d6c7 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8ddb5ce0 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
 rcu_read_lock include/linux/rcupdate.h:838 [inline]
 batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:754 [inline]
 batadv_iv_ogm_schedule_buff+0x5ac/0x1500 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/0x8d0 net/batman-adv/bat_iv_ogm.c:1712
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:udevd           state:R  running task     stack:25600 pid:8035  tgid:8035  ppid:4670   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:preempt_count_add+0x1a/0x150 kernel/sched/core.c:5656
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 c7 c0 20 c1 f0 94 55 48 ba 00 00 00 00 00 fc ff df 48 89 c1 53 <83> e0 07 89 fb 48 c1 e9 03 83 c0 03 65 01 3d 8b 31 a9 7e 0f b6 14
RSP: 0000:ffffc900032ff6f8 EFLAGS: 00000246
RAX: ffffffff94f0c120 RBX: 1ffff9200065fee2 RCX: ffffffff94f0c120
RDX: dffffc0000000000 RSI: ffffffff88f8ccff RDI: 0000000000000001
RBP: ffff888028a40000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888028a40440
R13: ffff888028a40430 R14: 0000000000000000 R15: 0000000000000000
 class_preempt_constructor include/linux/preempt.h:480 [inline]
 migrate_enable+0xce/0x260 kernel/sched/core.c:2266
 bpf_prog_run_save_cb include/linux/filter.h:943 [inline]
 sk_filter_trim_cap+0x464/0xac0 net/core/filter.c:161
 sk_filter include/linux/filter.h:1052 [inline]
 do_one_broadcast net/netlink/af_netlink.c:1487 [inline]
 netlink_broadcast_filtered+0x635/0xf10 net/netlink/af_netlink.c:1540
 netlink_broadcast net/netlink/af_netlink.c:1564 [inline]
 netlink_sendmsg+0xa06/0xd70 net/netlink/af_netlink.c:1899
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0xab5/0xc90 net/socket.c:2597
 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2651
 __sys_sendmsg+0x117/0x1f0 net/socket.c:2680
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1cc036da4b
RSP: 002b:00007ffe1d589e68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00005594b192ee20 RCX: 00007f1cc036da4b
RDX: 0000000000000000 RSI: 00007ffe1d589e78 RDI: 000000000000000c
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000170 R14: 0000000000000000 R15: 00005594b19102c0
 </TASK>
rcu: rcu_preempt kthread starved for 10524 jiffies! g44501 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:27680 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6621
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.11.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:112
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 65 48 8b 05 18 a7 f1 74 48 8b 00 a8 08 75 0c 66 90 0f 00 2d c8 c3 a9 00 fb f4 <fa> c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8da07d70 EFLAGS: 00000246
RAX: 0000000000004000 RBX: 0000000000000001 RCX: ffffffff8b121709
RDX: 0000000000000001 RSI: ffff888019e9c800 RDI: ffff888019e9c864
RBP: ffff888019e9c864 R08: 0000000000000001 R09: ffffed1017246fd9
R10: ffff8880b9237ecb R11: 0000000000000000 R12: ffff88801bfb1800
R13: ffffffff8e951c20 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b321e3ff8 CR3: 000000002c758000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 acpi_idle_enter+0xc5/0x160 drivers/acpi/processor_idle.c:702
 cpuidle_enter_state+0x85/0x500 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
 cpuidle_idle_call kernel/sched/idle.c:230 [inline]
 do_idle+0x313/0x3f0 kernel/sched/idle.c:326
 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:424
 rest_init+0x16b/0x2b0 init/main.c:747
 start_kernel+0x3df/0x4c0 init/main.c:1103
 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:507
 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:488
 common_startup_64+0x13e/0x148
 </TASK>