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: (detected by 0, t=10502 jiffies, g=27285, q=147 ncpus=2) rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294964710-4294954208), jiffies_till_next_fqs=1, root ->qsmask 0x0 rcu: rcu_preempt kthread starved for 10502 jiffies! g27285 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:24912 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: 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 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: 8293 Comm: syz.0.807 Not tainted 6.12.0-rc2-syzkaller-00631-g6d858708d465 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:kasan_check_range+0x1ba/0x290 mm/kasan/generic.c:189 Code: fb 48 8d 5d 07 48 85 ed 48 0f 49 dd 48 83 e3 f8 48 29 dd 74 12 41 80 3b 00 0f 85 a6 00 00 00 49 ff c3 48 ff cd 75 ee 5b 41 5c <41> 5e 41 5f 5d c3 cc cc cc cc 40 84 ed 75 5f f7 c5 00 ff 00 00 75 RSP: 0018:ffffc90000a185a0 EFLAGS: 00000056 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff817056d4 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff901d11a8 RBP: 0000000000000000 R08: ffffffff901d11af R09: 1ffffffff203a235 R10: dffffc0000000000 R11: fffffbfff203a236 R12: 1ffff920001430c0 R13: dffffc0000000000 R14: dffffc0000000001 R15: fffffbfff203a236 FS: 0000555587a4a500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555587a5d588 CR3: 0000000056b0c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] cpumask_test_cpu include/linux/cpumask.h:570 [inline] cpu_online include/linux/cpumask.h:1117 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0xd4/0x550 kernel/locking/lockdep.c:5796 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:170 __run_hrtimer kernel/time/hrtimer.c:1695 [inline] __hrtimer_run_queues+0x670/0xd50 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:free_zapped_rcu+0x215/0x2c0 kernel/locking/lockdep.c:6336 Code: 25 45 84 ff 75 26 eb 37 90 0f 0b 90 eb 31 90 0f 0b 90 e9 34 ff ff ff e8 e9 38 56 0a f7 44 24 18 00 02 00 00 74 db fb 45 84 ff <74> 13 48 c7 c7 40 c7 27 94 48 c7 c6 a0 ac 70 81 e8 16 43 0a 00 48 RSP: 0018:ffffc90000a18b20 EFLAGS: 00000202 RAX: fc427b1be1367d00 RBX: 1ffff9200014316c RCX: ffffffff9a3d3903 RDX: 0000000000000000 RSI: ffffffff8c0ad7a0 RDI: ffffffff8c60fb20 RBP: ffffc90000a18bf0 R08: ffffffff942bc777 R09: 0000000000000000 R10: ffffffff9429c778 R11: fffffbfff28578ef R12: dffffc0000000000 R13: 1ffff92000143168 R14: ffffc90000a18b60 R15: 0000000000000001 rcu_do_batch kernel/rcu/tree.c:2567 [inline] rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037 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 ae f2 2d f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 73 98 92 f5 65 8b 05 c4 32 33 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90009a07a40 EFLAGS: 00000206 RAX: fc427b1be1367d00 RBX: 1ffff92001340f4c RCX: ffffffff9a3d3903 RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: 0000000000000001 RBP: ffffc90009a07ad0 R08: ffffffff901d11af R09: 1ffffffff203a235 R10: dffffc0000000000 R11: fffffbfff203a236 R12: dffffc0000000000 R13: 1ffff92001340f48 R14: ffffc90009a07a60 R15: 0000000000000246 task_rq_unlock kernel/sched/sched.h:1779 [inline] wake_up_new_task+0x81f/0xc70 kernel/sched/core.c:4837 kernel_clone+0x4ee/0x8f0 kernel/fork.c:2815 __do_sys_clone3 kernel/fork.c:3088 [inline] __se_sys_clone3+0x2cb/0x350 kernel/fork.c:3067 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: 0033:0x7f3a32bb2029 Code: 5f 07 00 48 8d 3d 1c 5f 07 00 e8 a2 28 f6 ff 66 90 b8 ea ff ff ff 48 85 ff 74 2c 48 85 d2 74 27 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 18 74 01 c3 31 ed 48 83 e4 f0 4c 89 c7 ff d2 48 89 c7 RSP: 002b:00007ffd09ffb588 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f3a32b34960 RCX: 00007f3a32bb2029 RDX: 00007f3a32b34960 RSI: 0000000000000058 RDI: 00007ffd09ffb5d0 RBP: 00007f3a338fe6c0 R08: 00007f3a338fe6c0 R09: 00007ffd09ffb6b7 R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffa8 R13: 000000000000000b R14: 00007ffd09ffb5d0 R15: 00007ffd09ffb6b8 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