rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: (detected by 0, t=10502 jiffies, g=26673, q=1256081 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 8355 (4294965170-4294956815), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 8356 jiffies! g26673 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:25976 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7935 Comm: syz-executor Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:stack_trace_consume_entry+0x2a/0x280 kernel/stacktrace.c:86
Code: f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 18 48 89 fb 48 ba 00 00 00 00 00 fc ff df 4c 8d 4f 10 4d 89 cf 49 c1 ef 03 <41> 0f b6 04 17 84 c0 0f 85 06 01 00 00 44 8b 43 10 48 8d 6b 08 49
RSP: 0018:ffffc90000a174f0 EFLAGS: 00000a06
RAX: ffffffff818b3628 RBX: ffffc90000a17620 RCX: ffffffff91790000
RDX: dffffc0000000000 RSI: ffffffff818b3628 RDI: ffffc90000a17620
RBP: ffffc90000a175d0 R08: ffffc90000a175d0 R09: ffffc90000a17630
R10: ffffc90000a17590 R11: ffffffff818b36f0 R12: ffff888030cb8000
R13: ffffffff818b36f0 R14: ffffc90000a17620 R15: 1ffff92000142ec6
FS: 00005555613b6500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555613d15c8 CR3: 00000000672e0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x10e/0x150 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x243/0x390 mm/slub.c:4314
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
ref_tracker_alloc+0x14b/0x490 lib/ref_tracker.c:203
__netdev_tracker_alloc include/linux/netdevice.h:4136 [inline]
netdev_hold include/linux/netdevice.h:4165 [inline]
dst_init+0xee/0x490 net/core/dst.c:52
dst_alloc+0x14f/0x190 net/core/dst.c:93
rt_dst_alloc net/ipv4/route.c:1625 [inline]
__mkroute_output net/ipv4/route.c:2617 [inline]
ip_route_output_key_hash_rcu+0x13cc/0x2390 net/ipv4/route.c:2839
ip_route_output_key_hash+0x193/0x2b0 net/ipv4/route.c:2668
__ip_route_output_key include/net/route.h:141 [inline]
ip_route_output_flow+0x29/0x140 net/ipv4/route.c:2896
ip_route_output_key include/net/route.h:151 [inline]
ip_route_me_harder+0x877/0x1360 net/ipv4/netfilter.c:53
synproxy_send_tcp+0x356/0x6c0 net/netfilter/nf_synproxy_core.c:431
synproxy_send_client_synack+0x8a4/0xe20 net/netfilter/nf_synproxy_core.c:484
nft_synproxy_eval_v4+0x3ca/0x610 net/netfilter/nft_synproxy.c:59
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:5672 [inline]
__netif_receive_skb+0x2bf/0x650 net/core/dev.c:5785
process_backlog+0x662/0x15b0 net/core/dev.c:6117
__napi_poll+0xcb/0x490 net/core/dev.c:6877
napi_poll net/core/dev.c:6946 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:7068
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655
irq_exit_rcu+0x9/0x30 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 2e 4a 37 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 43 74 9a f5 65 8b 05 24 c6 30 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc900032f77c0 EFLAGS: 00000206
RAX: a43a60e9cf5ca800 RBX: 1ffff9200065eefc RCX: ffffffff817b246a
RDX: dffffc0000000000 RSI: ffffffff8c0a9680 RDI: 0000000000000001
RBP: ffffc900032f7860 R08: ffffffff942b88b7 R09: 1ffffffff2857116
R10: dffffc0000000000 R11: fffffbfff2857117 R12: dffffc0000000000
R13: 1ffff9200065eef8 R14: ffffc900032f77e0 R15: 0000000000000246
__slab_free+0x2c5/0x3d0
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4104 [inline]
slab_alloc_node mm/slub.c:4153 [inline]
__do_kmalloc_node mm/slub.c:4282 [inline]
__kmalloc_noprof+0x236/0x4c0 mm/slub.c:4295
kmalloc_noprof include/linux/slab.h:905 [inline]
tomoyo_realpath_from_path+0xcf/0x5e0 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x2b7/0x740 security/tomoyo/file.c:822
tomoyo_path_rmdir+0xd0/0x110 security/tomoyo/tomoyo.c:195
security_path_rmdir+0x169/0x360 security/security.c:1944
do_rmdir+0x2e7/0x580 fs/namei.c:4450
__do_sys_unlinkat fs/namei.c:4629 [inline]
__se_sys_unlinkat fs/namei.c:4623 [inline]
__x64_sys_unlinkat+0xde/0xf0 fs/namei.c:4623
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: 0033:0x7fc436d7f4f7
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 07 01 00 00 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:00007fc43706ecc8 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007fc436d7f4f7
RDX: 0000000000000200 RSI: 00007fc43706fe00 RDI: 00000000ffffff9c
RBP: 00007fc436df3824 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000207 R12: 00007fc43706fe00
R13: 00007fc436df3824 R14: 000000000002832b R15: 00007fc43706fe40