rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10385 ticks this GP) idle=8b9c/1/0x4000000000000000 softirq=14477/14478 fqs=4339
rcu: hardirqs softirqs csw/system
rcu: number: 1717414 181 0
rcu: cputime: 15590 36877 36 ==> 52470(ms)
rcu: (t=10500 jiffies g=13801 q=2790 ncpus=2)
CPU: 0 PID: 6861 Comm: syz.0.269 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__in6_dev_get include/net/addrconf.h:323 [inline]
RIP: 0010:ip6_ignore_linkdown include/net/addrconf.h:414 [inline]
RIP: 0010:find_match+0xa8/0xc80 net/ipv6/route.c:782
Code: fc ff df 42 80 7c 25 00 00 74 08 48 89 df e8 6f bc 9d f8 48 89 d8 bb 48 03 00 00 48 03 18 48 89 d8 48 c1 e8 03 42 80 3c 20 00 <74> 08 48 89 df e8 4e bc 9d f8 48 8b 1b e8 16 b2 46 01 41 89 c4 31
RSP: 0018:ffffc900000071e0 EFLAGS: 00000246
RAX: 1ffff1100bff7069 RBX: ffff88805ffb8348 RCX: 0000000000000100
RDX: ffff88802bd50000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff1100bba6b97 R08: ffffc900000074e0 R09: ffffc900000074f0
R10: ffffc90000007340 R11: fffff52000000e6a R12: dffffc0000000000
R13: 0000000000000003 R14: 1ffff1100bba6b99 R15: ffff88805dd35ccf
FS: 00007feaccfe66c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556aea44e8 CR3: 000000005de32000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
__find_rr_leaf+0x249/0x760 net/ipv6/route.c:870
find_rr_leaf net/ipv6/route.c:891 [inline]
rt6_select net/ipv6/route.c:935 [inline]
fib6_table_lookup+0x3b5/0xa80 net/ipv6/route.c:2232
ip6_pol_route+0x239/0x1230 net/ipv6/route.c:2268
pol_lookup_func include/net/ip6_fib.h:641 [inline]
fib6_rule_lookup+0x20c/0x570 net/ipv6/fib6_rules.c:116
ip6_route_input_lookup net/ipv6/route.c:2337 [inline]
ip6_route_input+0x732/0xa50 net/ipv6/route.c:2633
ip6_rcv_finish+0x143/0x230 net/ipv6/ip6_input.c:77
NF_HOOK+0x32d/0x3b0 include/linux/netfilter.h:304
__netif_receive_skb_one_core net/core/dev.c:5646 [inline]
__netif_receive_skb+0xcc/0x290 net/core/dev.c:5760
process_backlog+0x391/0x6f0 net/core/dev.c:6088
__napi_poll+0xc0/0x460 net/core/dev.c:6650
napi_poll net/core/dev.c:6717 [inline]
net_rx_action+0x616/0xc40 net/core/dev.c:6853
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:finish_task_switch+0x26a/0x8f0 kernel/sched/core.c:5255
Code: 0f 84 33 01 00 00 48 85 db 0f 85 52 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 e0 94 34 09 e8 1b 2f 30 00 fb 4c 8b 65 c0 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc900041875b8 EFLAGS: 00000286
RAX: 31552e1958b4f700 RBX: 0000000000000000 RCX: 31552e1958b4f700
RDX: dffffc0000000000 RSI: ffffffff8acacbe0 RDI: ffffffff8b1c9c20
RBP: ffffc90004187610 R08: ffffffff8e8b666f R09: 1ffffffff1d16ccd
R10: dffffc0000000000 R11: fffffbfff1d16cce R12: ffff88802bd50000
R13: dffffc0000000000 R14: ffff888021519e00 R15: ffff8880b8e3cb48
context_switch kernel/sched/core.c:5384 [inline]
__schedule+0x155b/0x45a0 kernel/sched/core.c:6700
preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7010
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:acct_update_integrals+0x394/0x3f0 kernel/tsacct.c:161
Code: 58 fe ff eb 1f e8 dc 58 fe ff e9 32 fe ff ff e8 d2 58 fe ff e8 bd 88 ff 08 4d 85 f6 74 e0 e8 c3 58 fe ff fb 43 c6 44 25 10 f8 <43> c6 44 25 0c f8 48 c7 44 24 20 0e 36 e0 45 4b c7 44 25 00 00 00
RSP: 0018:ffffc900041879a0 EFLAGS: 00000293
RAX: ffffffff8188d2cd RBX: 0000000000000000 RCX: ffff88802bd50000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004187ab0 R08: ffffffff8e8b666f R09: 1ffffffff1d16ccd
R10: dffffc0000000000 R11: fffffbfff1d16cce R12: dffffc0000000000
R13: 1ffff92000830f38 R14: 0000000000000200 R15: 00000000000e4d74
do_exit+0x606/0x2460 kernel/exit.c:836
do_group_exit+0x21b/0x2d0 kernel/exit.c:1026
get_signal+0x12fc/0x13f0 kernel/signal.c:2902
arch_do_signal_or_restart+0xc2/0x800 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7feacc19ce59
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:00007feaccfe6028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: 0000000000000005 RBX: 00007feacc415fa0 RCX: 00007feacc19ce59
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007feacc232d6f R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007feacc416038 R14: 00007feacc415fa0 R15: 00007ffcda8d1bd8