rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (1 GPs behind) idle=d72c/1/0x4000000000000000 softirq=30362/30364 fqs=5035
rcu: hardirqs softirqs csw/system
rcu: number: 1392625 0 0
rcu: cputime: 16890 35599 38 ==> 52490(ms)
rcu: (t=10500 jiffies g=33265 q=515 ncpus=2)
CPU: 1 PID: 8071 Comm: syz.0.479 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:stack_trace_consume_entry+0x4/0x270 kernel/stacktrace.c:83
Code: 48 8b 0c 25 28 00 00 00 48 3b 4c 24 78 75 09 48 8d 65 f0 5b 41 5e 5d c3 e8 39 09 f3 08 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa <55> 41 57 41 56 41 55 41 54 53 48 83 ec 18 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc900001ef940 EFLAGS: 00000286
RAX: ffffffff81321d9a RBX: ffffc900001efa00 RCX: ffff88807ec23c00
RDX: 0000000000000100 RSI: ffffffff81519f87 RDI: ffffc900001efa00
RBP: ffffc900001ef9d0 R08: ffff88807ec23c00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: ffffffff81519f87
R13: ffffffff8c7c9388 R14: ffffffff81746d20 R15: ffffc900001ef948
FS: 00007f2b5fca36c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30323ffc CR3: 00000000616f4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
arch_stack_walk+0x138/0x190 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:383
kmalloc include/linux/slab.h:600 [inline]
kzalloc include/linux/slab.h:721 [inline]
ref_tracker_alloc+0x134/0x460 lib/ref_tracker.c:203
__netdev_tracker_alloc include/linux/netdevice.h:4110 [inline]
netdev_hold include/linux/netdevice.h:4139 [inline]
dst_init+0xd9/0x460 net/core/dst.c:52
dst_alloc+0x12e/0x170 net/core/dst.c:93
rt_dst_alloc net/ipv4/route.c:1662 [inline]
__mkroute_output net/ipv4/route.c:2626 [inline]
ip_route_output_key_hash_rcu+0x14f0/0x2360 net/ipv4/route.c:2848
ip_route_output_key_hash+0x20b/0x340 net/ipv4/route.c:2677
__ip_route_output_key include/net/route.h:134 [inline]
ip_route_output_flow+0x2a/0x150 net/ipv4/route.c:2905
ip_route_output_key include/net/route.h:150 [inline]
geneve_get_v4_rt+0x7d2/0xc90 drivers/net/geneve.c:843
geneve_xmit_skb drivers/net/geneve.c:934 [inline]
geneve_xmit+0x792/0x3090 drivers/net/geneve.c:1120
__netdev_start_xmit include/linux/netdevice.h:4943 [inline]
netdev_start_xmit include/linux/netdevice.h:4957 [inline]
xmit_one net/core/dev.c:3619 [inline]
dev_hard_start_xmit+0x246/0x740 net/core/dev.c:3635
__dev_queue_xmit+0x1a64/0x35a0 net/core/dev.c:4425
neigh_output include/net/neighbour.h:543 [inline]
ip6_finish_output2+0xe2e/0x1650 net/ipv6/ip6_output.c:141
dst_output include/net/dst.h:467 [inline]
NF_HOOK include/linux/netfilter.h:304 [inline]
ndisc_send_skb+0xbed/0x14b0 net/ipv6/ndisc.c:513
addrconf_rs_timer+0x2bc/0x600 net/ipv6/addrconf.c:4006
call_timer_fn+0x16e/0x530 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x52d/0x7d0 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+0xc7/0x190 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:generic_exec_single+0x476/0x4f0 kernel/smp.c:418
Code: 75 11 e8 cd e6 0a 00 48 85 db 75 16 e8 c3 e6 0a 00 eb 15 e8 bc e6 0a 00 e8 47 cd ec 08 48 85 db 74 ea e8 ad e6 0a 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 66 43 c7 44 2c
RSP: 0018:ffffc900033e7a00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000080000
RDX: ffffc9000e1be000 RSI: 0000000000003333 RDI: 0000000000003334
RBP: ffffc900033e7ad0 R08: ffffffff90d945ff R09: 1ffffffff21b28bf
R10: dffffc0000000000 R11: fffffbfff21b28c0 R12: 1ffff9200067cf44
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff9200067cf65
smp_call_function_single+0x352/0x580 kernel/smp.c:647
task_function_call kernel/events/core.c:120 [inline]
perf_install_in_context+0x591/0x8e0 kernel/events/core.c:2948
__do_sys_perf_event_open kernel/events/core.c:12915 [inline]
__se_sys_perf_event_open+0x17fa/0x1c20 kernel/events/core.c:12567
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f2b5ed8f749
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:00007f2b5fca3038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f2b5efe5fa0 RCX: 00007f2b5ed8f749
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f2b5ee13f91 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2b5efe6038 R14: 00007f2b5efe5fa0 R15: 00007fff0a2299e8