rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10497 ticks this GP) idle=79a4/1/0x4000000000000000 softirq=18005/18005 fqs=4232
rcu: hardirqs softirqs csw/system
rcu: number: 1323777 0 0
rcu: cputime: 16430 36049 65 ==> 52480(ms)
rcu: (t=10500 jiffies g=19945 q=2692 ncpus=2)
CPU: 0 PID: 6980 Comm: syz.3.414 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:sock_wfree+0x5/0x610 net/core/sock.c:2496
Code: 07 fe c1 38 c1 0f 8c 3f fc ff ff 4c 89 ff e8 92 09 6e f9 e9 32 fc ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 <41> 57 41 56 41 55 41 54 53 50 49 89 fe 48 bd 00 00 00 00 00 fc ff
RSP: 0018:ffffc90000006668 EFLAGS: 00000246
RAX: ffffffff85b0d7e4 RBX: 1ffff1100b7ad6ac RCX: ffff8880211d3c00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff88805bd6b500
RBP: ffff88805bd6b581 R08: ffffffff8e8adfaf R09: 1ffffffff1d15bf5
R10: dffffc0000000000 R11: fffffbfff1d15bf6 R12: ffff88805bd6b560
R13: dffffc0000000000 R14: ffff88805bd6b500 R15: ffffffff88713240
FS: 00007f4920ec56c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000007d48c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
skb_orphan include/linux/skbuff.h:3164 [inline]
loopback_xmit+0x15a/0x630 drivers/net/loopback.c:79
__netdev_start_xmit include/linux/netdevice.h:4943 [inline]
netdev_start_xmit include/linux/netdevice.h:4957 [inline]
xmit_one net/core/dev.c:3658 [inline]
dev_hard_start_xmit+0x246/0x740 net/core/dev.c:3674
__dev_queue_xmit+0x1ac2/0x36b0 net/core/dev.c:4464
dev_queue_xmit include/linux/netdevice.h:3113 [inline]
neigh_hh_output include/net/neighbour.h:527 [inline]
neigh_output include/net/neighbour.h:541 [inline]
ip_finish_output2+0xcec/0x11e0 net/ipv4/ip_output.c:235
NF_HOOK_COND include/linux/netfilter.h:293 [inline]
ip_output+0x2a1/0x3b0 net/ipv4/ip_output.c:436
iptunnel_xmit+0x4f0/0x920 net/ipv4/ip_tunnel_core.c:82
udp_tunnel_xmit_skb+0x249/0x390 net/ipv4/udp_tunnel_core.c:172
geneve_xmit_skb drivers/net/geneve.c:1007 [inline]
geneve_xmit+0x25d1/0x3430 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:3658 [inline]
dev_hard_start_xmit+0x246/0x740 net/core/dev.c:3674
__dev_queue_xmit+0x1ac2/0x36b0 net/core/dev.c:4464
__bond_start_xmit include/linux/netdevice.h:-1 [inline]
bond_start_xmit+0x12c8/0x1ca0 drivers/net/bonding/bond_main.c:5535
__netdev_start_xmit include/linux/netdevice.h:4943 [inline]
netdev_start_xmit include/linux/netdevice.h:4957 [inline]
xmit_one net/core/dev.c:3658 [inline]
dev_hard_start_xmit+0x246/0x740 net/core/dev.c:3674
__dev_queue_xmit+0x1ac2/0x36b0 net/core/dev.c:4464
neigh_output include/net/neighbour.h:543 [inline]
ip6_finish_output2+0xe3d/0x1630 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+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:generic_exec_single+0x481/0x4f0 kernel/smp.c:418
Code: 75 11 e8 02 02 0b 00 48 85 db 75 16 e8 f8 01 0b 00 eb 15 e8 f1 01 0b 00 e8 0c 29 08 09 48 85 db 74 ea e8 e2 01 0b 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 43 c7 44 2c 08
RSP: 0018:ffffc90018917a00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000080000
RDX: ffffc9000d3ec000 RSI: 00000000000029d9 RDI: 00000000000029da
RBP: ffffc90018917ad0 R08: ffffffff911bf5ff R09: 1ffffffff2237ebf
R10: dffffc0000000000 R11: fffffbfff2237ec0 R12: 1ffff92003122f44
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92003122f65
smp_call_function_single+0x36d/0x5a0 kernel/smp.c:647
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: 0033:0x7f491ff9aeb9
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:00007f4920ec5028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f4920215fa0 RCX: 00007f491ff9aeb9
RDX: ffffff7fffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007f4920008c1f R08: 0000000000000008 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4920216038 R14: 00007f4920215fa0 R15: 00007ffe665256b8