sched: DL replenish lagged too much
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=9929, q=1492855 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10462 (4294957851-4294947389), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10463 jiffies! g9929 f0x2 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:26072 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5327 [inline]
 __schedule+0x184f/0x4c30 kernel/sched/core.c:6707
 __schedule_loop kernel/sched/core.c:6784 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6799
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 3394 Comm: kworker/R-bat_e Not tainted 6.12.0-rc6-next-20241107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_tt_purge
RIP: 0010:unwind_next_frame+0x60a/0x22d0 arch/x86/kernel/unwind_orc.c:517
Code: 84 73 0b 00 00 48 83 c3 10 e9 06 02 00 00 83 fb 04 0f 84 0e 02 00 00 83 fb 05 0f 85 e6 09 00 00 48 8b 44 24 58 42 80 3c 20 00 <74> 0d 4c 89 f7 e8 fc 2e be 00 48 8b 54 24 10 49 8b 06 48 89 04 24
RSP: 0018:ffffc90000006570 EFLAGS: 00000246
RAX: 1ffff92000000ccf RBX: 0000000000000005 RCX: ffffffff9089b170
RDX: ffffffff912d1f60 RSI: ffffffff912d1ee2 RDI: 0000000000000001
RBP: ffffc90000006690 R08: 000000000000001f R09: ffffc90000006730
R10: ffffc90000006690 R11: ffffffff818b1820 R12: dffffc0000000000
R13: ffffc90000006640 R14: ffffc90000006678 R15: ffffffff912d1f64
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff045f9d28 CR3: 000000006325c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4104 [inline]
 slab_alloc_node mm/slub.c:4153 [inline]
 kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4160
 __nf_conntrack_alloc+0x8f/0x380 net/netfilter/nf_conntrack_core.c:1677
 init_conntrack+0x3c3/0x1310 net/netfilter/nf_conntrack_core.c:1768
 resolve_normal_ct net/netfilter/nf_conntrack_core.c:1888 [inline]
 nf_conntrack_in+0xd5c/0x1890 net/netfilter/nf_conntrack_core.c:2040
 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
 nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
 nf_hook+0x2c4/0x450 include/linux/netfilter.h:269
 __ip_local_out+0x3d9/0x4e0 net/ipv4/ip_output.c:119
 ip_local_out+0x26/0x70 net/ipv4/ip_output.c:128
 synproxy_send_client_synack+0x8b8/0xf30 net/netfilter/nf_synproxy_core.c:484
 nft_synproxy_eval_v4+0x3ca/0x610 net/netfilter/nft_synproxy.c:59
 nft_synproxy_do_eval+0x362/0xa60 net/netfilter/nft_synproxy.c:141
 expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]
 nft_do_chain+0x4ad/0x1da0 net/netfilter/nf_tables_core.c:288
 nft_do_chain_inet+0x418/0x6b0 net/netfilter/nft_chain_filter.c:161
 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
 nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
 nf_hook include/linux/netfilter.h:269 [inline]
 NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312
 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
 __netif_receive_skb_one_core net/core/dev.c:5672 [inline]
 __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5785
 process_backlog+0x662/0x15b0 net/core/dev.c:6117
 __napi_poll+0xcb/0x490 net/core/dev.c:6838
 napi_poll net/core/dev.c:6907 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:7029
 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
 do_softirq+0x11b/0x1e0 kernel/softirq.c:455
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 batadv_tt_local_purge+0x2a0/0x340 net/batman-adv/translation-table.c:1314
 batadv_tt_purge+0x35/0xa40 net/batman-adv/translation-table.c:3509
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
 rescuer_thread+0x63f/0x10a0 kernel/workqueue.c:3487
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>