rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=144137, q=244 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295072661-4295062159), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g144137 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:28576 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5504 [inline]
 __schedule+0x125c/0x6730 kernel/sched/core.c:7228
 __schedule_loop kernel/sched/core.c:7307 [inline]
 schedule+0xdd/0x390 kernel/sched/core.c:7322
 schedule_timeout+0x127/0x280 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1a9/0x900 kernel/rcu/tree.c:2123
 rcu_gp_kthread+0x179/0x230 kernel/rcu/tree.c:2325
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
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: 25750 Comm: syz.2.5684 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:list_is_last include/linux/list.h:385 [inline]
RIP: 0010:should_restart_cycle net/sched/sch_taprio.c:875 [inline]
RIP: 0010:advance_sched+0x27c/0xd20 net/sched/sch_taprio.c:954
Code: e7 4c 89 ee e8 45 3c 6b f8 4d 39 ec 0f 84 d9 07 00 00 e8 17 42 6b f8 48 8b 44 24 08 48 8d 9d 10 01 00 00 48 8d b8 40 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f
RSP: 0018:ffffc90000a08de8 EFLAGS: 00000046
RAX: ffff888075229800 RBX: ffff888075229d10 RCX: ffffffff899e02bb
RDX: ffff888027864a80 RSI: ffffffff899e02c9 RDI: ffff888075229940
RBP: ffff888075229c00 R08: 0000000000000006 R09: 18b9dc9556a400c0
R10: 0000000000000000 R11: ffffc90000a08ff8 R12: 18b9dc9556a400c0
R13: 0000000000000000 R14: ffff8880b8528640 R15: ffff8880b8528690
FS:  00007fd4021366c0(0000) GS:ffff88812445f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34e03000 CR3: 0000000092d52000 CR4: 00000000003526f0
DR0: ffffffffffffffff DR1: 00000000000001f7 DR2: 00000000ffffffff
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:2032 [inline]
 __hrtimer_run_queues+0x462/0x9c0 kernel/time/hrtimer.c:2096
 hrtimer_interrupt+0x3e5/0x940 kernel/time/hrtimer.c:2215
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
 __sysvec_apic_timer_interrupt+0x109/0x470 arch/x86/kernel/apic/apic.c:1068
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x9e/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:smp_call_function_many_cond+0x657/0x16c0 kernel/smp.c:815
Code: 81 0c 00 44 89 e6 bf 08 00 00 00 e8 b3 7b 0c 00 41 83 fc 08 75 09 e8 f8 80 0c 00 90 0f 0b 90 41 be 08 00 00 00 e9 5b fc ff ff <e8> e4 80 0c 00 48 c7 c0 88 a8 d8 90 48 ba 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90005e3fb40 EFLAGS: 00000246
RAX: ffffc900121d5000 RBX: ffffffff90d92764 RCX: ffffffff81fcbf63
RDX: 0000000000001168 RSI: 000000000000008b RDI: 0000000000400000
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000228 R12: 0000000000000001
R13: 0000000000000000 R14: fcf86d2a995fd432 R15: 0000000000000001
 clock_was_set+0x61c/0x850 kernel/time/hrtimer.c:999
 do_settimeofday64+0x330/0x4d0 kernel/time/timekeeping.c:1684
 do_sys_settimeofday64+0x1dc/0x260 kernel/time/time.c:195
 __do_sys_clock_settime kernel/time/posix-timers.c:1139 [inline]
 __se_sys_clock_settime kernel/time/posix-timers.c:1123 [inline]
 __x64_sys_clock_settime+0x1c1/0x2a0 kernel/time/posix-timers.c:1123
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd40119ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd402136028 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00007fd401415fa0 RCX: 00007fd40119ce59
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000000
RBP: 00007fd401232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd401416038 R14: 00007fd401415fa0 R15: 00007ffd7c5f7eb8
 </TASK>