rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10498 ticks this GP) idle=46f4/1/0x4000000000000000 softirq=16209/16209 fqs=4488
rcu: hardirqs softirqs csw/system
rcu: number: 1199007 0 0
rcu: cputime: 20849 31640 73 ==> 52490(ms)
rcu: (t=10500 jiffies g=16501 q=2388 ncpus=2)
CPU: 0 PID: 6917 Comm: syz.3.323 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:unwind_get_return_address+0x76/0xc0 arch/x86/kernel/unwind_orc.c:369
Code: 08 48 89 df e8 db 07 a4 00 48 8b 3b e8 93 49 1e 00 89 c5 31 ff 89 c6 e8 68 e2 4b 00 85 ed 74 20 e8 af de 4b 00 43 80 3c 37 00 <74> 08 48 89 df e8 b0 07 a4 00 48 8b 03 eb 0e e8 96 de 4b 00 eb 05
RSP: 0018:ffffc900000072c0 EFLAGS: 00000246
RAX: ffffffff813b34f1 RBX: ffffc90000007330 RCX: ffff88801b391e00
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffff88801b391e00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: ffffffff81af1596
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000000e66
FS: 00007f75811d96c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f758044e661 CR3: 000000002ba4a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
arch_stack_walk+0x11d/0x190 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
____kasan_kmalloc mm/kasan/common.c:375 [inline]
__kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:384
kasan_kmalloc include/linux/kasan.h:198 [inline]
__do_kmalloc_node mm/slab_common.c:1007 [inline]
__kmalloc+0xb4/0x230 mm/slab_common.c:1020
kmalloc include/linux/slab.h:604 [inline]
kzalloc include/linux/slab.h:721 [inline]
neigh_alloc net/core/neighbour.c:495 [inline]
___neigh_create+0x6d2/0x2440 net/core/neighbour.c:649
ip6_finish_output2+0x1581/0x1630 net/ipv6/ip6_output.c:132
dst_output include/net/dst.h:467 [inline]
NF_HOOK include/linux/netfilter.h:304 [inline]
ndisc_send_skb+0xc26/0x14f0 net/ipv6/ndisc.c:513
addrconf_rs_timer+0x2d5/0x630 net/ipv6/addrconf.c:4024
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x542/0x800 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:preempt_schedule_irq+0xba/0x150 kernel/sched/core.c:7010
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 6f bf 01 00 00 00 e8 61 db cf f6 e8 7c e1 00 f7 fb bf 01 00 00 00 f1 b4 ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc900054b78a0 EFLAGS: 00000286
RAX: 52cf9789f3f52700 RBX: 0000000000000000 RCX: 52cf9789f3f52700
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: 0000000000000001
RBP: ffffc900054b7940 R08: ffffffff911bf5ff R09: 1ffffffff2237ebf
R10: dffffc0000000000 R11: fffffbfff2237ec0 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000a96f14
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:33 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:89 [inline]
RIP: 0010:preempt_schedule+0x8c/0xd0 kernel/sched/core.c:6889
Code: ff ff ff 7f 75 2a 48 b8 04 00 00 00 00 fc ff df c6 04 03 00 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 04 03 f8 75 29 48 c7 04 24 0e 36 e0 45 4a c7 04 33 00 00 00 00
RSP: 0018:ffffc900054b7a00 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 1ffff92000a96f40 RCX: 0000000000080000
RDX: ffffc9000d1fb000 RSI: 000000000000eaba RDI: 000000000000eabb
RBP: ffffc900054b7a78 R08: ffffffff911bf5ff R09: 1ffffffff2237ebf
R10: dffffc0000000000 R11: fffffbfff2237ec0 R12: 0000000000000000
R13: dffffc0000000000 R14: dffffc0000000000 R15: 1ffff92000a96f60
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
smp_call_function_single+0x48d/0x5a0 kernel/smp.c:652
task_function_call kernel/events/core.c:120 [inline]
perf_install_in_context+0x5be/0x920 kernel/events/core.c:2948
__do_sys_perf_event_open kernel/events/core.c:12915 [inline]
__se_sys_perf_event_open+0x1836/0x1c50 kernel/events/core.c:12567
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f758039bf79
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:00007f75811d9028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f7580615fa0 RCX: 00007f758039bf79
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f75804327e0 R08: 0000000000000008 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7580616038 R14: 00007f7580615fa0 R15: 00007fff11ec54a8