rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: (detected by 0, t=10504 jiffies, g=110117, q=601 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295123612-4295113110), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g110117 f0x2 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:27328 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7026
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+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x439/0x7d0 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 24145 Comm: syz.9.4607 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:kasan_check_range+0x1da/0x2c0 mm/kasan/generic.c:200
Code: 07 4d 85 e4 49 0f 49 dc 48 83 e3 f8 49 29 dc 74 12 41 80 3b 00 0f 85 b8 00 00 00 49 ff c3 49 ff cc 75 ee 5b 41 5c 41 5d 41 5e <41> 5f 5d e9 f9 c9 eb fe cc 45 84 ff 75 63 41 f7 c7 00 ff 00 00 75
RSP: 0018:ffffc90000a08be8 EFLAGS: 00000056
RAX: ffffffff895f6001 RBX: 0000000000000004 RCX: ffffffff895f6026
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff8880532c0084
RBP: ffff8880532c0084 R08: ffff8880532c0087 R09: 1ffff1100a658010
R10: dffffc0000000000 R11: ffffed100a658011 R12: 0000000000000001
R13: 0000000000000000 R14: ffff8880794cb2e0 R15: 1ffff1100a658010
FS: 0000555593694500(0000) GS:ffff888126472000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7ee9097000 CR3: 0000000090b51000 CR4: 0000000000350ef0
Call Trace:
instrument_atomic_write include/linux/instrumented.h:82 [inline]
atomic_set include/linux/atomic/atomic-instrumented.h:67 [inline]
taprio_set_budgets+0x256/0x3b0 net/sched/sch_taprio.c:677
advance_sched+0x963/0xc90 net/sched/sch_taprio.c:982
__run_hrtimer kernel/time/hrtimer.c:1777 [inline]
__hrtimer_run_queues+0x52c/0xc60 kernel/time/hrtimer.c:1841
hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1903
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline]
__sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1058
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1052
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:139 [inline]
RIP: 0010:wrmsrq arch/x86/include/asm/msr.h:199 [inline]
RIP: 0010:native_x2apic_icr_write arch/x86/include/asm/apic.h:233 [inline]
RIP: 0010:__x2apic_send_IPI_dest arch/x86/kernel/apic/x2apic_phys.c:113 [inline]
RIP: 0010:x2apic_send_IPI+0x73/0xe0 arch/x86/kernel/apic/x2apic_phys.c:50
Code: 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 75 42 41 8b 16 66 0f 1f 44 00 00 83 fb 02 b8 00 04 00 00 0f 45 c3 b9 30 08 00 00 0f 30 <66> 90 5b 41 5c 41 5e 41 5f 5d e9 a9 fb 9e ff cc 89 fe 89 fd 48 c7
RSP: 0018:ffffc9000f7ff730 EFLAGS: 00000206
RAX: 00000000000000fb RBX: 00000000000000fb RCX: 0000000000000830
RDX: 0000000000000000 RSI: 00000000000000fb RDI: 0000000000000000
RBP: ffffc9000f7ff8e0 R08: ffffffff8f5c4b77 R09: 1ffffffff1eb896e
R10: dffffc0000000000 R11: ffffffff81703210 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8880b88201b0 R15: ffffffff8d72fd10
arch_send_call_function_single_ipi arch/x86/include/asm/smp.h:95 [inline]
send_call_function_single_ipi kernel/smp.c:120 [inline]
smp_call_function_many_cond+0xabb/0x12d0 kernel/smp.c:857
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1043
on_each_cpu include/linux/smp.h:71 [inline]
smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2653 [inline]
smp_text_poke_batch_finish+0xe98/0x1130 arch/x86/kernel/alternative.c:2946
__static_call_transform+0x4eb/0x750 arch/x86/kernel/static_call.c:111
arch_static_call_transform+0x98/0xc0 arch/x86/kernel/static_call.c:-1
__static_call_update+0x3c3/0x5d0 kernel/static_call_inline.c:209
tracepoint_update_call kernel/tracepoint.c:271 [inline]
tracepoint_remove_func kernel/tracepoint.c:372 [inline]
tracepoint_probe_unregister+0x898/0x9b0 kernel/tracepoint.c:504
bpf_raw_tp_link_release+0x43/0x70 kernel/bpf/syscall.c:3738
bpf_link_free+0xed/0x330 kernel/bpf/syscall.c:3249
bpf_link_put_direct kernel/bpf/syscall.c:3292 [inline]
bpf_link_release+0x6b/0x80 kernel/bpf/syscall.c:3299
__fput+0x44c/0xa70 fs/file_table.c:468
task_work_run+0x1d4/0x260 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop+0xe9/0x130 kernel/entry/common.c:43
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f85dc98eec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff4531c558 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00000000001ad5bd RCX: 00007f85dc98eec9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f85dcbe7da0 R08: 0000000000000001 R09: 0000001e4531c84f
R10: 0000001b30a20000 R11: 0000000000000246 R12: 00007f85dcbe5fac
R13: 00007f85dcbe5fa0 R14: ffffffffffffffff R15: 00007fff4531c670