rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2689 jiffies s: 67261 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 13833 Comm: syz.4.3173 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:sched_clock_cpu+0x75/0x250 kernel/sched/clock.c:384
Code: 30 10 e2 5f 81 4c 8d 74 24 20 49 c1 ee 03 48 b8 f1 f1 f1 f1 00 f3 f3 f3 4b 89 04 2e 66 90 e8 62 85 ce ff 48 03 05 b3 83 bf 0c <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2e 00 00 00 00 65 48 8b 0c 25
RSP: 0018:ffffc900000075a0 EFLAGS: 00000007
RAX: 000000e41d97cc7e RBX: ffffc900000075e0 RCX: 0000000000000001
RDX: 1ffffffff1f3ee00 RSI: ffffffff8f9f701c RDI: ffffffff8f9f7000
RBP: ffffc90000007658 R08: ffffffff8f9f7008 R09: ffffffff8f9f7018
R10: ffffffff8f9f7010 R11: ffffffff8f9f7003 R12: dffffc0000000000
R13: dffffc0000000000 R14: 1ffff92000000eb8 R15: ffffffff8c5e4980
FS:  00007f2c3c3f66c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efe8bdd2d58 CR3: 00000000604a1000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 irqtime_account_irq+0x6a/0x1b0 kernel/sched/cputime.c:60
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x45/0xc0 arch/x86/kernel/irq_work.c:17
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x84/0x500 kernel/rcu/tree_plugin.h:685
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 2d 97 96 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90000007760 EFLAGS: 00000206
RAX: 868eb0154a79f800 RBX: 1ffff92000000ef4 RCX: 868eb0154a79f800
RDX: dffffc0000000000 RSI: ffffffff8a8c0500 RDI: ffffffff8adefd20
RBP: ffffc90000007860 R08: dffffc0000000000 R09: fffffbfff215c467
R10: fffffbfff215c467 R11: 1ffffffff215c466 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ndisc_send_skb+0xda7/0x1510 net/ipv6/ndisc.c:521
 addrconf_rs_timer+0x2b8/0x600 net/ipv6/addrconf.c:3979
 call_timer_fn+0x1a0/0x670 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1549 [inline]
 __run_timers+0x525/0x7c0 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 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:__debug_check_no_obj_freed lib/debugobjects.c:993 [inline]
RIP: 0010:debug_check_no_obj_freed+0xe9/0x530 lib/debugobjects.c:1009
Code: 4d b9 47 fd 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 49 c1 ef 0c 31 c0 4c 89 64 24 48 4c 89 6c 24 18 eb 17 48 8b 44 24 40 <01> d8 49 81 c6 00 10 00 00 49 ff cf 0f 84 4f ff ff ff 48 89 44 24
RSP: 0018:ffffc90003477030 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8a8c0500 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed10171c6afa
R10: ffffed10171c6afa R11: 1ffff110171c6af9 R12: ffffc9000335a000
R13: ffffc90003359000 R14: ffffc90003359000 R15: 0000000000000001
 __vunmap+0x27a/0xa00 mm/vmalloc.c:2707
 bpf_prog_calc_tag+0x53a/0x630 kernel/bpf/core.c:343
 resolve_pseudo_ldimm64+0xd4/0x1030 kernel/bpf/verifier.c:13028
 bpf_check+0x3d97/0x10ca0 kernel/bpf/verifier.c:15562
 bpf_prog_load+0x1072/0x15a0 kernel/bpf/syscall.c:2648
 __sys_bpf+0x520/0x6d0 kernel/bpf/syscall.c:5027
 __do_sys_bpf kernel/bpf/syscall.c:5131 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5129 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5129
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f2c3e18eec9
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:00007f2c3c3f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f2c3e3e5fa0 RCX: 00007f2c3e18eec9
RDX: 0000000000000048 RSI: 0000200000000200 RDI: 0000000000000005
RBP: 00007f2c3e211f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2c3e3e6038 R14: 00007f2c3e3e5fa0 R15: 00007ffc39509e38
 </TASK>