IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...!: (2 ticks this GP) idle=4d7c/1/0x4000000000000000 softirq=28089/28089 fqs=0 rcu: (detected by 0, t=10504 jiffies, g=23089, q=377 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5865 Comm: syz-executor Not tainted 6.12.0-syzkaller-10681-g65ae975e97d5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:rb_insert_color+0x0/0x690 lib/rbtree.c:435 Code: 8b 5c 24 18 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d 41 ff e3 cc 90 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 38 49 89 f7 48 RSP: 0018:ffffc90000a18c98 EFLAGS: 00000082 RAX: 1ffff110170e593b RBX: ffff8880b872c901 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffff8880b872c9d0 RDI: ffff88807fb57340 RBP: 1ffff1100ff6ae68 R08: ffff88807fb57357 R09: 0000000000000000 R10: ffff88807fb57340 R11: ffffed100ff6ae6b R12: ffff8880b872c9d0 R13: ffff8880b872c9d0 R14: 0000000000000000 R15: ffff88807fb57340 FS: 000055558aadf500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9850d0d178 CR3: 0000000060ca6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rb_insert_color_cached include/linux/rbtree.h:114 [inline] rb_add_cached include/linux/rbtree.h:183 [inline] timerqueue_add+0x260/0x290 lib/timerqueue.c:40 enqueue_hrtimer+0x1b2/0x3c0 kernel/time/hrtimer.c:1084 __run_hrtimer kernel/time/hrtimer.c:1756 [inline] __hrtimer_run_queues+0x6cb/0xd50 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:122 [inline] RIP: 0010:lock_release+0x132/0xa30 kernel/locking/lockdep.c:5862 Code: 00 65 48 8b 04 25 c0 d4 03 00 48 89 44 24 20 48 8d 98 dc 0a 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 fb 05 00 00 <83> 3b 00 0f 85 14 05 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 RSP: 0018:ffffc900039378a0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff888032e50adc RCX: ffffffff81714280 RDX: 0000000000000000 RSI: ffffffff8c615880 RDI: ffffffff8c615840 RBP: ffffc900039379d8 R08: ffffffff901e34b7 R09: 1ffffffff203c696 R10: dffffc0000000000 R11: fffffbfff203c697 R12: 1ffff92000726f20 R13: ffffffff8a78bffc R14: ffff88802179aad8 R15: dffffc0000000000 sock_release_ownership include/net/sock.h:1732 [inline] release_sock+0x12f/0x1f0 net/core/sock.c:3643 do_ipv6_setsockopt+0x207c/0x3640 net/ipv6/ipv6_sockglue.c:971 ipv6_setsockopt+0x5d/0x170 net/ipv6/ipv6_sockglue.c:993 do_sock_setsockopt+0x3af/0x720 net/socket.c:2313 __sys_setsockopt net/socket.c:2338 [inline] __do_sys_setsockopt net/socket.c:2344 [inline] __se_sys_setsockopt net/socket.c:2341 [inline] __x64_sys_setsockopt+0x1ee/0x280 net/socket.c:2341 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: 0033:0x7f9850b8273a Code: ff ff ff c3 0f 1f 40 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7 RSP: 002b:00007ffe82c505c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007ffe82c50650 RCX: 00007f9850b8273a RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00000000000002e8 R09: 0079746972756365 R10: 00007f9850d0d120 R11: 0000000000000202 R12: 00007f9850d0d0c0 R13: 00007ffe82c505ec R14: 0000000000000000 R15: 00007f9850d0de40 rcu: rcu_preempt kthread timer wakeup didn't happen for 10503 jiffies! g23089 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=1 timer-softirq=11381 rcu: rcu_preempt kthread starved for 10504 jiffies! g23089 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I 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 IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available