sched: DL replenish lagged too much
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5231/1:b..l
rcu: 	(detected by 0, t=10503 jiffies, g=9761, q=815 ncpus=2)
task:udevd           state:R  running task     stack:23560 pid:5231  tgid:5231  ppid:1      task_flags:0x400140 flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288
 irqentry_exit+0x6f/0x90 kernel/entry/common.c:197
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__read_once_word_nocheck+0x3/0x10 include/asm-generic/rwonce.h:67
Code: b0 00 48 ba 00 00 00 00 00 fc ff df e9 88 fc ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 07 <c3> cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900037072b0 EFLAGS: 00000202
RAX: ffffffff847e93d3 RBX: ffffc90003707918 RCX: 1ffff920006e0e01
RDX: ffffffff903fb1b8 RSI: 0000000000000002 RDI: ffffc90003707918
RBP: 1ffff920006e0e72 R08: 0000000000000009 R09: 0000000000000000
R10: ffffc900037073d8 R11: ffffffff81ac3760 R12: ffffc90003708000
R13: 1ffff920006e0e73 R14: ffffc90003707388 R15: ffffc90003700000
 deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline]
 unwind_next_frame+0xc3c/0x2390 arch/x86/kernel/unwind_orc.c:585
 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:243 [inline]
 __kasan_slab_free+0x5b/0x80 mm/kasan/common.c:275
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2417 [inline]
 slab_free mm/slub.c:4680 [inline]
 kfree+0x18e/0x440 mm/slub.c:4879
 free_slab_obj_exts mm/slub.c:2083 [inline]
 unaccount_slab mm/slub.c:2628 [inline]
 __free_slab+0xb0/0x1a0 mm/slub.c:2723
 __slab_free+0x303/0x3c0 mm/slub.c:4591
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:396
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4365 [inline]
 __kmalloc_noprof+0x27a/0x4f0 mm/slub.c:4377
 kmalloc_noprof include/linux/slab.h:909 [inline]
 tomoyo_realpath_from_path+0xe3/0x5d0 security/tomoyo/realpath.c:251
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x213/0x4b0 security/tomoyo/file.c:822
 security_inode_getattr+0x12f/0x330 security/security.c:2377
 vfs_getattr fs/stat.c:259 [inline]
 vfs_statx_path fs/stat.c:299 [inline]
 vfs_statx+0x18e/0x550 fs/stat.c:356
 vfs_fstatat+0x118/0x170 fs/stat.c:375
 __do_sys_newfstatat fs/stat.c:542 [inline]
 __se_sys_newfstatat fs/stat.c:536 [inline]
 __x64_sys_newfstatat+0x116/0x190 fs/stat.c:536
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcccc911b0a
RSP: 002b:00007ffd927c3648 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000055c543f0c420 RCX: 00007fcccc911b0a
RDX: 00007ffd927c3650 RSI: 000055c543efaef3 RDI: 00000000ffffff9c
RBP: 000055c54cf11168 R08: 00063478c1c69200 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd927c3650 R14: 0000000000000000 R15: 00063478c1c69200
 </TASK>
rcu: rcu_preempt kthread starved for 8389 jiffies! g9761 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:27128 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7058
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:nft_do_chain+0x773/0x1920 net/netfilter/nf_tables_core.c:287
Code: 03 42 0f b6 04 20 84 c0 0f 85 a0 04 00 00 45 0f b6 36 89 df 44 89 f6 e8 7b 16 09 f8 44 39 f3 0f 84 a7 0a 00 00 e8 ad 14 09 f8 <8b> 9c 24 c0 00 00 00 bf ff ff ff ff 89 de e8 da 18 09 f8 83 fb ff
RSP: 0018:ffffc900000073c0 EFLAGS: 00000246
RAX: 55603084a6f03100 RBX: ffffffff8c9beb80 RCX: 55603084a6f03100
RDX: 0000000000000000 RSI: ffffffff8be336e0 RDI: ffffffff8223227d
RBP: ffffc90000007610 R08: ffffffff8fa38337 R09: 1ffffffff1f47066
R10: dffffc0000000000 R11: fffffbfff1f47067 R12: dffffc0000000000
R13: ffff888055cab990 R14: ffff888055cab990 R15: 1ffff1100ab95732
FS:  0000000000000000(0000) GS:ffff888125c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000080142018 CR3: 00000000249f2000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 nft_do_chain_inet+0x25d/0x340 net/netfilter/nft_chain_filter.c:161
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_slow+0xc2/0x220 net/netfilter/core.c:623
 nf_hook include/linux/netfilter.h:273 [inline]
 NF_HOOK+0x206/0x3a0 include/linux/netfilter.h:316
 ip6_input+0x16a/0x270 net/ipv6/ip6_input.c:500
 NF_HOOK+0x30c/0x3a0 include/linux/netfilter.h:318
 __netif_receive_skb_one_core net/core/dev.c:5979 [inline]
 __netif_receive_skb+0xd3/0x380 net/core/dev.c:6092
 process_backlog+0x60e/0x14f0 net/core/dev.c:6444
 __napi_poll+0xc7/0x360 net/core/dev.c:7494
 napi_poll net/core/dev.c:7557 [inline]
 net_rx_action+0x707/0xe30 net/core/dev.c:7684
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82
Code: 53 e7 02 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 b7 0e 00 f3 0f 1e fa fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8de07d80 EFLAGS: 000002c2
RAX: 55603084a6f03100 RBX: ffffffff81968308 RCX: 55603084a6f03100
RDX: 0000000000000001 RSI: ffffffff8be336e0 RDI: ffffffff81968308
RBP: ffffffff8de07eb8 R08: ffff8880b8632f9b R09: 1ffff110170c65f3
R10: dffffc0000000000 R11: ffffed10170c65f4 R12: ffffffff8fa38330
R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff1bd2a20
 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
 default_idle+0x13/0x20 arch/x86/kernel/process.c:757
 default_idle_call+0x74/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:190 [inline]
 do_idle+0x1e8/0x510 kernel/sched/idle.c:330
 cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:428
 rest_init+0x2de/0x300 init/main.c:744
 start_kernel+0x3a9/0x410 init/main.c:1097
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:307
 x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:288
 common_startup_64+0x13e/0x147
 </TASK>
SLUB: Unable to allocate memory on CPU 0 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
  cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
  node 0: slabs: 483, objs: 15456, free: 0
  node 1: slabs: 319, objs: 10208, free: 0
SLUB: Unable to allocate memory on CPU 0 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
  cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
  node 0: slabs: 483, objs: 15456, free: 0
  node 1: slabs: 319, objs: 10208, free: 0
SLUB: Unable to allocate memory on CPU 0 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
  cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
  node 0: slabs: 483, objs: 15456, free: 0
  node 1: slabs: 319, objs: 10208, free: 0
SLUB: Unable to allocate memory on CPU 0 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
  cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
  node 0: slabs: 483, objs: 15456, free: 0
  node 1: slabs: 319, objs: 10208, free: 0
SLUB: Unable to allocate memory on CPU 0 (of node 0) on node -1, gfp=0x920(GFP_ATOMIC|__GFP_ZERO)
  cache: kmalloc-96, object size: 96, buffer size: 128, default order: 0, min order: 0
  node 0: slabs: 483, objs: 15456, free: 0
  node 1: slabs: 319, objs: 10208, free: 0