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): P7694/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=23413, q=729 ncpus=2)
task:syz.0.388 state:R running task stack:23544 pid:7694 tgid:7691 ppid:5830 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:__local_bh_enable_ip+0x170/0x200 kernel/softirq.c:396
Code: 8c e8 d4 43 67 0a 65 66 8b 05 b4 00 a2 7e 66 85 c0 75 5d bf 01 00 00 00 e8 0d be 0b 00 e8 08 67 45 00 fb 65 8b 05 78 00 a2 7e <85> c0 75 05 e8 f7 81 a8 ff 48 c7 44 24 20 0e 36 e0 45 49 c7 04 1c
RSP: 0018:ffffc900032df840 EFLAGS: 00000286
RAX: 0000000000000000 RBX: 1ffff9200065bf0c RCX: ffffffff9a3ac903
RDX: dffffc0000000000 RSI: ffffffff8c0a98e0 RDI: ffffffff8c5fb220
RBP: ffffc900032df8f0 R08: ffffffff901983b7 R09: 1ffffffff2033076
R10: dffffc0000000000 R11: fffffbfff2033077 R12: dffffc0000000000
R13: 1ffff9200065bf10 R14: ffffc900032df880 R15: 0000000000000200
local_bh_enable include/linux/bottom_half.h:33 [inline]
bpf_test_run+0x56b/0xa90 net/bpf/test_run.c:437
bpf_prog_test_run_skb+0xca2/0x1820 net/bpf/test_run.c:1095
bpf_prog_test_run+0x2e6/0x360 kernel/bpf/syscall.c:4402
__sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5808
__do_sys_bpf kernel/bpf/syscall.c:5897 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5895 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5895
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe707785d29
RSP: 002b:00007fe708528038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fe707976080 RCX: 00007fe707785d29
RDX: 0000000000000050 RSI: 0000000020000200 RDI: 000000000000000a
RBP: 00007fe707801b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe707976080 R15: 00007ffd8170fac8
rcu: rcu_preempt kthread starved for 9881 jiffies! g23413 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:25976 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
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+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
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: 5966 Comm: kworker/0:7 Not tainted 6.13.0-rc7-syzkaller-00043-g619f0b6fad52 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: wg-crypt-wg2 wg_packet_decrypt_worker
RIP: 0010:memset+0xf/0x20 arch/x86/lib/memset_64.S:37
Code: 44 88 1f e9 4e 1e 27 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 49 89 f9 40 88 f0 48 89 d1 aa 4c 89 c8 e9 22 1e 27 00 0f 1f 80 00 00 00 00 90 90 90 90 90
RSP: 0018:ffffc90000007448 EFLAGS: 00000002
RAX: ffffc90002ecfb00 RBX: ffffc90000007558 RCX: 0000000000000001
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc9000000757f
RBP: dffffc0000000000 R08: ffffc9000000757f R09: ffffc90000007570
R10: dffffc0000000000 R11: fffff52000000eb0 R12: ffffc90002ed0000
R13: ffffc90000007520 R14: ffffffff816900f8 R15: ffffc90000007570
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30219ff8 CR3: 0000000012aa2000 CR4: 0000000000350ef0
Call Trace:
unwind_next_frame+0xcfb/0x22d0 arch/x86/kernel/unwind_orc.c:592
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
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:582
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2353 [inline]
slab_free mm/slub.c:4613 [inline]
kfree+0x196/0x430 mm/slub.c:4761
dummy_timer+0x7f4/0x4620 drivers/usb/gadget/udc/dummy_hcd.c:1987
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x59d/0xd30 kernel/time/hrtimer.c:1803
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1820
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:__local_bh_enable_ip+0x170/0x200 kernel/softirq.c:396
Code: 8c e8 d4 43 67 0a 65 66 8b 05 b4 00 a2 7e 66 85 c0 75 5d bf 01 00 00 00 e8 0d be 0b 00 e8 08 67 45 00 fb 65 8b 05 78 00 a2 7e <85> c0 75 05 e8 f7 81 a8 ff 48 c7 44 24 20 0e 36 e0 45 49 c7 04 1c
RSP: 0018:ffffc90002ecf600 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 1ffff920005d9ec4 RCX: ffffffff817b387a
RDX: dffffc0000000000 RSI: ffffffff8c0a98e0 RDI: ffffffff8c5fb220
RBP: ffffc90002ecf6b0 R08: ffffffff942a5987 R09: 1ffffffff2854b30
R10: dffffc0000000000 R11: fffffbfff2854b31 R12: dffffc0000000000
R13: 1ffff920005d9ec8 R14: ffffc90002ecf640 R15: 0000000000000201
spin_unlock_bh include/linux/spinlock.h:396 [inline]
ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline]
wg_packet_decrypt_worker+0x2a9/0xd80 drivers/net/wireguard/receive.c:499
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xa68/0x1840 kernel/workqueue.c:3317
worker_thread+0x870/0xd30 kernel/workqueue.c:3398
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244