Dead loop on virtual device ipvlan0, fix it urgently!
Dead loop on virtual device ipvlan0, fix it urgently!
Dead loop on virtual device ipvlan0, fix it urgently!
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=8213, q=2061991 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 9944 (4294956382-4294946438), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 9944 jiffies! g8213 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:25816 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x1895/0x4b30 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6774
 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
 </TASK>
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: 25 Comm: kworker/1:0 Not tainted 6.12.0-rc2-syzkaller-00501-gd677aebd663d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:unwind_get_return_address+0x68/0x90 arch/x86/kernel/unwind_orc.c:370
Code: 89 df e8 ab 32 bd 00 48 8b 3b e8 83 6b 1e 00 85 c0 74 14 43 80 3c 37 00 74 08 48 89 df e8 90 32 bd 00 48 8b 03 eb 02 31 c0 5b <41> 5e 41 5f c3 cc cc cc cc 89 d9 80 e1 07 80 c1 03 38 c1 7c a9 48
RSP: 0018:ffffc90000a170e8 EFLAGS: 00000046
RAX: ffffffff8a1f0b33 RBX: ffffc90000a17100 RCX: ffffffff917bd000
RDX: ffffffff9196a501 RSI: ffffc90000a11000 RDI: ffffffff8a1f0b33
RBP: ffffc90000a17190 R08: ffffc90000a17cb0 R09: 0000000000000000
R10: ffffc90000a17150 R11: fffff52000142e2c R12: ffff88801d2f1e00
R13: ffffffff8180a0e0 R14: dffffc0000000000 R15: 1ffff92000142e29
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3677dc CR3: 000000000e734000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 arch_stack_walk+0xfd/0x150 arch/x86/kernel/stacktrace.c:26
 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
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:247 [inline]
 slab_post_alloc_hook mm/slub.c:4085 [inline]
 slab_alloc_node mm/slub.c:4134 [inline]
 kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4141
 fill_pool lib/debugobjects.c:168 [inline]
 debug_objects_fill_pool+0x729/0x9f0 lib/debugobjects.c:615
 debug_object_activate+0x135/0x510 lib/debugobjects.c:704
 debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
 debug_activate kernel/time/hrtimer.c:478 [inline]
 enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1085
 __run_hrtimer kernel/time/hrtimer.c:1708 [inline]
 __hrtimer_run_queues+0x6cb/0xd50 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1043
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1037
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:kmem_cache_alloc_noprof+0x4/0x2a0 mm/slub.c:4140
Code: 40 48 89 04 24 e9 2c fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 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 41 89 f6 49 89 fd 65 48
RSP: 0018:ffffc90000a17bc8 EFLAGS: 00000246
RAX: 1ffffffff1fb2a27 RBX: ffffffff8fd95138 RCX: dffffc0000000000
RDX: 0000000000000100 RSI: 0000000000000820 RDI: ffff888144ae2640
RBP: dffffc0000000000 R08: ffffffff899655aa R09: ffffffff8a1f1b59
R10: 0000000000000003 R11: ffff88801d2f1e00 R12: ffff88802d4ee000
R13: 0000000000000000 R14: 00000000ffffffff R15: ffffffff8fd950c0
 dst_alloc+0x12b/0x190 net/core/dst.c:89
 rt_dst_alloc net/ipv4/route.c:1612 [inline]
 __mkroute_output net/ipv4/route.c:2571 [inline]
 ip_route_output_key_hash_rcu+0x13cc/0x2390 net/ipv4/route.c:2793
 ip_route_output_key_hash+0x193/0x2b0 net/ipv4/route.c:2622
 __ip_route_output_key include/net/route.h:141 [inline]
 ip_route_output_flow+0x29/0x140 net/ipv4/route.c:2850
 ip_route_output_key include/net/route.h:151 [inline]
 ip_route_me_harder+0x80d/0x1300 net/ipv4/netfilter.c:53
 synproxy_send_tcp+0x356/0x6c0 net/netfilter/nf_synproxy_core.c:431
 synproxy_send_client_synack+0x8b8/0xf30 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:5668 [inline]
 __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5781
 process_backlog+0x662/0x15b0 net/core/dev.c:6113
 __napi_poll+0xcb/0x490 net/core/dev.c:6777
 napi_poll net/core/dev.c:6846 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:6968
 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
 do_softirq+0x11b/0x1e0 kernel/softirq.c:455
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]
 nsim_dev_trap_report_work+0x75d/0xaa0 drivers/net/netdevsim/dev.c:850
 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
 </TASK>
Dead loop on virtual device ipvlan0, fix it urgently!