IPVS: sed: UDP 224.0.0.2:0 - no destination available IPVS: sed: UDP 224.0.0.2:0 - no destination available IPVS: sed: UDP 224.0.0.2:0 - no destination available IPVS: sed: UDP 224.0.0.2:0 - no destination available rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...!: (0 ticks this GP) idle=ccd4/1/0x4000000000000000 softirq=36796/36796 fqs=0 rcu: (detected by 1, t=10506 jiffies, g=30629, q=66 ncpus=2) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 10917 Comm: syz.3.1304 Not tainted 6.12.0-syzkaller-10740-g509f806f7f70 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:cpu_max_bits_warn include/linux/cpumask.h:135 [inline] RIP: 0010:cpumask_check include/linux/cpumask.h:142 [inline] RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:570 [inline] RIP: 0010:cpu_online include/linux/cpumask.h:1117 [inline] RIP: 0010:trace_hrtimer_cancel+0x2e/0x220 include/trace/events/timer.h:317 Code: 89 fd 53 e8 b4 da 12 00 66 90 e8 ad da 12 00 48 c7 c3 0c d9 03 00 e8 a1 da 12 00 65 8b 1b bf 07 00 00 00 89 de e8 d2 dc 12 00 <83> fb 07 0f 87 a7 01 00 00 e8 84 da 12 00 89 db be 08 00 00 00 48 RSP: 0018:ffffc90000007e10 EFLAGS: 00000046 RAX: 0000000000010001 RBX: 0000000000000000 RCX: ffffffff817beaae RDX: ffff888026eb0000 RSI: 0000000000000007 RDI: 0000000000000005 RBP: ffff888035616340 R08: 0000000000000005 R09: 0000000000000007 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888035616340 R13: ffff8880b862cb00 R14: ffff8880b862ca00 R15: ffffffff893c4970 FS: 00007f556e2b06c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020f5dfe4 CR3: 000000005feec000 CR4: 00000000003526f0 DR0: 0000000000000060 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_deactivate kernel/time/hrtimer.c:476 [inline] __run_hrtimer kernel/time/hrtimer.c:1707 [inline] __hrtimer_run_queues+0x484/0xae0 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__might_resched+0x65/0x5e0 kernel/sched/core.c:8720 Code: 48 c1 eb 03 48 c7 44 24 20 90 df 5c 81 48 01 d8 c7 00 f1 f1 f1 f1 c7 40 04 00 f3 f3 f3 e8 43 cf d2 09 85 c0 0f 85 fd 03 00 00 36 cf d2 09 85 c0 0f 85 47 04 00 00 65 4c 8b 3d f6 f8 a6 7e 49 RSP: 0018:ffffc9001ea6fc18 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 1ffff92003d4df85 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8b6ce300 RDI: ffffffff8bd1e5c0 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff8c9baf40 R13: 0000000000000b82 R14: 0000000020229500 R15: ffff888035ff7880 __might_fault+0x83/0x190 mm/memory.c:6748 do_recvmmsg+0x321/0x740 net/socket.c:2946 __sys_recvmmsg net/socket.c:3014 [inline] __do_sys_recvmmsg net/socket.c:3037 [inline] __se_sys_recvmmsg net/socket.c:3030 [inline] __x64_sys_recvmmsg+0x239/0x290 net/socket.c:3030 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f556d580849 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f556e2b0058 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f556d746080 RCX: 00007f556d580849 RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007f556d5f3986 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f556d746080 R15: 00007ffffed245d8 rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g30629 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=31480 rcu: rcu_preempt kthread starved for 10506 jiffies! g30629 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27600 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2045 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2247 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 IPVS: sed: UDP 224.0.0.2:0 - no destination available IPVS: sed: UDP 224.0.0.2:0 - no destination available IPVS: sed: UDP 224.0.0.2:0 - no destination available IPVS: sed: UDP 224.0.0.2:0 - no destination available IPVS: sed: UDP 224.0.0.2:0 - no destination available IPVS: sed: UDP 224.0.0.2:0 - no destination available IPVS: sed: UDP 224.0.0.2:0 - no destination available IPVS: sed: UDP 224.0.0.2:0 - no destination available IPVS: sed: UDP 224.0.0.2:0 - no destination available