rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=97d4/1/0x4000000000000000 softirq=60089/60090 fqs=3
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P14942/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=51605, q=142 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 14936 Comm: iou-sqp-14935 Not tainted 6.13.0-rc3-syzkaller-00224-gbaa172c77ac5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:advance_sched+0x287/0xca0 net/sched/sch_taprio.c:941
Code: 89 df e8 0c 82 3d f8 4c 8b 2b 48 8b 04 24 48 8d a8 40 01 00 00 48 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 ef e8 df 81 3d f8 48 8b 6d 00 4c 89 ef 48 89 ee e8 60
RSP: 0018:ffffc90000007c70 EFLAGS: 00000046
RAX: 1ffff1100f5c89a8 RBX: ffff88807ae46950 RCX: dffffc0000000000
RDX: 0000000000010000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff88807ae44d40 R08: ffffffff89c5c6cd R09: fffff52000000f7c
R10: dffffc0000000000 R11: fffff52000000f7c R12: 0000000000000000
R13: 181bc2ffdc000000 R14: ffff8880247eb330 R15: ffff88807ae46800
FS: 00007f4e892a56c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003c80 CR3: 000000006317c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:task_sched_runtime+0x2df/0x420 kernel/sched/core.c:5570
Code: 3c 38 00 74 08 4c 89 f7 e8 1e 8c 94 00 4d 8b 26 48 c7 44 24 20 0e 36 e0 45 4b c7 04 2f 00 00 00 00 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 60 0f 85 ab 00 00 00 4c 89 e0 48 8d 65 d8 5b 41 5c 41
RSP: 0018:ffffc9000bb0f480 EFLAGS: 00000246
RAX: 33348d9621ba5500 RBX: ffffc9000bb0f4c0 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8c0a9760 RDI: 0000000000000001
RBP: ffffc9000bb0f530 R08: ffffffff942709bf R09: 1ffffffff284e137
R10: dffffc0000000000 R11: fffffbfff284e138 R12: 0000000004515992
R13: 1ffff92001761e94 R14: ffff88807cd02800 R15: dffffc0000000000
thread_group_cputime+0x16c/0x700 kernel/sched/cputime.c:329
thread_group_cputime_adjusted+0xa6/0x340 kernel/sched/cputime.c:639
getrusage+0x1000/0x1340 kernel/sys.c:1863
io_sq_thread+0x994/0x1f00 io_uring/sqpoll.c:306
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:dhcpcd-run-hook state:R running task stack:25672 pid:14942 tgid:14942 ppid:14894 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6935
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6959
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1705 [inline]
zap_pmd_range mm/memory.c:1753 [inline]
zap_pud_range mm/memory.c:1782 [inline]
zap_p4d_range mm/memory.c:1803 [inline]
unmap_page_range+0x36c3/0x4040 mm/memory.c:1824
unmap_vmas+0x3cc/0x5f0 mm/memory.c:1914
exit_mmap+0x275/0xc20 mm/mmap.c:1668
__mmput+0x115/0x3b0 kernel/fork.c:1353
exec_mmap+0x779/0x860 fs/exec.c:1018
begin_new_exec+0x1285/0x1f90 fs/exec.c:1274
load_elf_binary+0x95b/0x2770 fs/binfmt_elf.c:1002
search_binary_handler fs/exec.c:1748 [inline]
exec_binprm fs/exec.c:1790 [inline]
bprm_execve+0xaf5/0x17a0 fs/exec.c:1842
do_execveat_common+0x55f/0x6f0 fs/exec.c:1949
do_execve fs/exec.c:2023 [inline]
__do_sys_execve fs/exec.c:2099 [inline]
__se_sys_execve fs/exec.c:2094 [inline]
__x64_sys_execve+0x92/0xb0 fs/exec.c:2094
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: 0033:0x7f546809aef7
RSP: 002b:00007ffed6e1d088 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00005573f8012e28 RCX: 00007f546809aef7
RDX: 00005573f8012e48 RSI: 00005573f8012e28 RDI: 00005573f8012ed0
RBP: 00005573f8012ed0 R08: 00005573f8012ed5 R09: 00007ffed6e20dd3
R10: 0000000000000008 R11: 0000000000000246 R12: 00005573f8012e48
R13: 00007f5468248904 R14: 00005573f8012e48 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10496 jiffies! g51605 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:25712 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 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+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
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 6192 Comm: kworker/u8:9 Not tainted 6.13.0-rc3-syzkaller-00224-gbaa172c77ac5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x19f3/0x2c60 kernel/smp.c:884
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 56 e9 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 01 e5 0b 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 e5 e4
RSP: 0018:ffffc900056276e0 EFLAGS: 00000293
RAX: ffffffff81938ebb RBX: 1ffff110170c8c65 RCX: ffff888032f6da00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900056278e0 R08: ffffffff81938e8a R09: 1ffffffff284e110
R10: dffffc0000000000 R11: fffffbfff284e111 R12: dffffc0000000000
R13: ffff8880b8646328 R14: ffff8880b873f940 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f614ff8 CR3: 000000000e736000 CR4: 00000000003526f0
DR0: 0000000000000003 DR1: 0000000000000004 DR2: 0000000100000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1051
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2114 [inline]
text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2324
text_poke_flush arch/x86/kernel/alternative.c:2515 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2522
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210
static_key_enable+0x1a/0x20 kernel/jump_label.c:223
toggle_allocation_gate+0xbc/0x260 mm/kfence/core.c:849
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
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