rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=225345, q=1386 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10496 (4295139203-4295128707), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10497 jiffies! g225345 f0x2 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:26864 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562
 schedule+0xb9/0x180 kernel/sched/core.c:6638
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x303/0x1340 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x99/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 32723 Comm: syz.0.7722 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:perf_swevent_hrtimer+0x3f2/0x590 kernel/events/core.c:10927
Code: 01 00 00 e8 d0 ad d9 ff 4c 8b 6c 24 28 48 8b 7c 24 38 be 01 00 00 00 48 8d 94 24 80 00 00 00 4c 89 e1 e8 41 c2 fc ff 41 89 c6 <41> 83 f6 01 49 8d bd 88 00 00 00 48 89 f8 48 c1 e8 03 42 80 3c 38
RSP: 0018:ffffc90000006d80 EFLAGS: 00000086
RAX: 0000000000000000 RBX: 1ffff92000000db8 RCX: ffff8880679dbb80
RDX: 0000000000010100 RSI: ffffffff8a94ad40 RDI: ffff8880331682e0
RBP: ffffc90000006fb0 R08: ffffffff8e1fcd2f R09: 1ffffffff1c3f9a5
R10: dffffc0000000000 R11: fffffbfff1c3f9a6 R12: ffffc900000072c8
R13: ffff888033168160 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f248cdf66c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000003b3e5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000008d24
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x521/0xd70 kernel/time/hrtimer.c:1811
 hrtimer_interrupt+0x3c5/0x9c0 kernel/time/hrtimer.c:1873
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:preempt_latency_start kernel/sched/core.c:5691 [inline]
RIP: 0010:preempt_count_add+0x70/0x190 kernel/sched/core.c:5717
Code: c1 e8 03 42 0f b6 04 38 84 c0 0f 85 e6 00 00 00 83 3d f3 d7 66 15 00 75 11 65 8b 05 f2 85 a9 7e 0f b6 c0 3d f5 00 00 00 73 58 <65> 8b 05 e1 85 a9 7e 25 ff ff ff 7f 39 f8 75 42 48 8b 5c 24 18 48
RSP: 0018:ffffc90000007370 EFLAGS: 00000297
RAX: 0000000000000001 RBX: ffffc90000007468 RCX: ffffffff96bfc103
RDX: dffffc0000000000 RSI: ffffffff88f07598 RDI: 0000000000000001
RBP: ffffc900000074b0 R08: ffffc90000007530 R09: 0000000000000003
R10: dffffc0000000000 R11: fffff52000000e99 R12: ffffffff88f07598
R13: ffffc90000007838 R14: dffffc0000000000 R15: dffffc0000000000
 unwind_next_frame+0xaf/0x20b0 arch/x86/kernel/unwind_orc.c:433
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 ____kasan_kmalloc mm/kasan/common.c:375 [inline]
 __kasan_kmalloc+0x8e/0xa0 mm/kasan/common.c:384
 kmalloc include/linux/slab.h:563 [inline]
 dst_cow_metrics_generic+0x52/0x1b0 net/core/dst.c:202
 dst_metrics_write_ptr include/net/dst.h:119 [inline]
 dst_metric_set include/net/dst.h:180 [inline]
 icmp6_dst_alloc+0x2d8/0x460 net/ipv6/route.c:3321
 ndisc_send_skb+0x424/0x14e0 net/ipv6/ndisc.c:493
 addrconf_rs_timer+0x2d1/0x630 net/ipv6/addrconf.c:3979
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x80/0x290 mm/kasan/generic.c:189
Code: ff 4d 89 c1 49 c1 e9 03 4b 8d 1c 21 49 89 df 4d 29 df 49 83 ff 10 7f 29 4d 85 ff 0f 84 38 01 00 00 4c 89 cb 48 f7 d3 4c 01 f3 <41> 80 3b 00 0f 85 86 01 00 00 49 ff c3 48 ff c3 75 ee e9 18 01 00
RSP: 0018:ffffc90004ecfaf0 EFLAGS: 00000282
RAX: ffffffff812fe101 RBX: fffffffffffffffe RCX: ffffffff812fe193
RDX: 0000000000000001 RSI: 000000000000006c RDI: ffffc90004ecfbc0
RBP: 0000000000000000 R08: ffffc90004ecfc2b R09: 1ffff920009d9f85
R10: dffffc0000000000 R11: fffff520009d9f84 R12: dffffc0000000001
R13: 00007f248cdf5d00 R14: 1ffff920009d9f78 R15: 000000000000000e
 memset+0x1e/0x40 mm/kasan/shadow.c:44
 __fpu_restore_sig arch/x86/kernel/fpu/signal.c:340 [inline]
 fpu__restore_sig+0x203/0x1290 arch/x86/kernel/fpu/signal.c:493
 restore_sigcontext arch/x86/kernel/signal.c:140 [inline]
 __ia32_sys_rt_sigreturn+0x5e4/0x760 arch/x86/kernel/signal.c:675
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f248eb9c629
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:00007f248cdf60e8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f248ee16098 RCX: 00007f248eb9c629
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f248ee1609c
RBP: 00007f248ee16090 R08: 001ad7caa568db90 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f248ee16128 R14: 00007ffdc57f1600 R15: 00007ffdc57f16e8
 </TASK>