rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P9392/2:b..l
rcu: (detected by 1, t=10503 jiffies, g=63917, q=1526822 ncpus=2)
task:syz.2.702 state:R running task stack:21952 pid:9392 tgid:9391 ppid:9185 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x18af/0x4bd0 kernel/sched/core.c:6690
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7012
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:eth_header+0x1e/0x1f0 net/ethernet/eth.c:82
Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 10 45 89 cf 4d 89 c4 48 89 0c 24 89 d5 <48> 89 74 24 08 48 89 fb e8 95 b0 e2 f7 48 89 df be 0e 00 00 00 e8
RSP: 0018:ffffc9000357ef28 EFLAGS: 00000286
RAX: ffffffff89979c14 RBX: 0000000000000070 RCX: ffff88808227b1a8
RDX: 00000000000086dd RSI: ffff888062a72000 RDI: ffff888049656280
RBP: 00000000000086dd R08: 0000000000000000 R09: 0000000000000070
R10: dffffc0000000000 R11: ffffffff89b23720 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888049656358 R15: 0000000000000070
dev_hard_header include/linux/netdevice.h:3148 [inline]
neigh_resolve_output+0x4f3/0x740 net/core/neighbour.c:1560
neigh_output include/net/neighbour.h:542 [inline]
ip6_finish_output2+0x1001/0x1730 net/ipv6/ip6_output.c:141
ip6_finish_output+0x41e/0x810 net/ipv6/ip6_output.c:226
NF_HOOK include/linux/netfilter.h:314 [inline]
ip6_xmit+0xef8/0x18b0 net/ipv6/ip6_output.c:366
sctp_v6_xmit+0x9f2/0x13f0 net/sctp/ipv6.c:248
sctp_packet_transmit+0x26af/0x2ca0 net/sctp/output.c:653
sctp_outq_flush_transports net/sctp/outqueue.c:1173 [inline]
sctp_outq_flush+0x142a/0x3e20 net/sctp/outqueue.c:1221
sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline]
sctp_do_sm+0x59cc/0x60c0 net/sctp/sm_sideeffect.c:1169
sctp_assoc_bh_rcv+0x3f1/0x640 net/sctp/associola.c:1051
sctp_backlog_rcv+0x177/0x3f0 net/sctp/input.c:331
sk_backlog_rcv include/net/sock.h:1115 [inline]
__release_sock+0x243/0x350 net/core/sock.c:3072
release_sock+0x61/0x1f0 net/core/sock.c:3626
sctp_setsockopt+0xb91/0x11c0 net/sctp/socket.c:4785
do_sock_setsockopt+0x3af/0x720 net/socket.c:2334
__sys_setsockopt+0x1a2/0x250 net/socket.c:2357
__do_sys_setsockopt net/socket.c:2366 [inline]
__se_sys_setsockopt net/socket.c:2363 [inline]
__x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2363
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb980b7dff9
RSP: 002b:00007fb9818db038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fb980d35f80 RCX: 00007fb980b7dff9
RDX: 0000000000000009 RSI: 0000000000000084 RDI: 0000000000000008
RBP: 00007fb980bf0296 R08: 000000000000009c R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb980d35f80 R15: 00007fb980e5fa28
rcu: rcu_preempt kthread starved for 3036 jiffies! g63917 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:24432 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x18af/0x4bd0 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted 6.12.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:__lock_acquire+0xf44/0x2050 kernel/locking/lockdep.c:5198
Code: 00 8b 1b 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 00 98 2c 94 be 08 00 00 00 e8 b4 43 8e 00 48 0f a3 1d 6c 2c bc 12 <0f> 83 73 02 00 00 48 69 c3 c8 00 00 00 48 8d 98 c0 16 c4 93 48 bf
RSP: 0018:ffffc90000006ef0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000022 RCX: ffffffff81706b8c
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff942c9800
RBP: 2886dbf14d0b5487 R08: ffffffff942c9807 R09: 1ffffffff2859300
R10: dffffc0000000000 R11: fffffbfff2859301 R12: 0000000000000000
R13: ffff88801d69c6d8 R14: 1ffff11003ad38f9 R15: ffff88801d69c7c8
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200bb030 CR3: 000000000e734000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
net_generic include/net/netns/generic.h:45 [inline]
synproxy_pernet+0x62/0x270 include/net/netfilter/nf_synproxy.h:32
nft_synproxy_eval_v4+0x124/0x610 net/netfilter/nft_synproxy.c:53
nft_synproxy_do_eval+0x362/0xa60 net/netfilter/nft_synproxy.c:141
expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]
nft_do_chain+0x4ad/0x1da0 net/netfilter/nf_tables_core.c:288
nft_do_chain_inet+0x418/0x6b0 net/netfilter/nft_chain_filter.c:161
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312
NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
__netif_receive_skb_one_core net/core/dev.c:5666 [inline]
__netif_receive_skb+0x2bf/0x650 net/core/dev.c:5779
process_backlog+0x662/0x15b0 net/core/dev.c:6111
__napi_poll+0xcb/0x490 net/core/dev.c:6775
napi_poll net/core/dev.c:6844 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6966
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
do_softirq+0x11b/0x1e0 kernel/softirq.c:455
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
spin_unlock_bh include/linux/spinlock.h:396 [inline]
cfg80211_inform_single_bss_data+0x1707/0x2090 net/wireless/scan.c:2349
cfg80211_inform_bss_data+0x3ce/0x5e70 net/wireless/scan.c:3184
cfg80211_inform_bss_frame_data+0x3b8/0x720 net/wireless/scan.c:3279
ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226
ieee80211_rx_bss_info net/mac80211/ibss.c:1100 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1962/0x2d70 net/mac80211/ibss.c:1606
ieee80211_iface_process_skb net/mac80211/iface.c:1603 [inline]
ieee80211_iface_work+0x8a5/0xf20 net/mac80211/iface.c:1657
cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244