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: 1-...!: (0 ticks this GP) idle=56cc/1/0x4000000000000000 softirq=58442/58442 fqs=0 rcu: (detected by 0, t=10506 jiffies, g=46437, q=1631 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5820 Comm: syz-executor Not tainted 6.13.0-rc1-syzkaller-00005-gceb8bf2ceaa7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline] RIP: 0010:lock_release+0xb1/0x6f0 kernel/locking/lockdep.c:5860 Code: 07 0f 87 22 05 00 00 89 ed be 08 00 00 00 48 89 e8 48 c1 e8 06 48 8d 3c c5 10 04 5f 90 e8 07 4a 86 00 48 0f a3 2d 3f 58 e8 0e <0f> 82 26 04 00 00 48 c7 c5 34 37 5f 90 48 b8 00 00 00 00 00 fc ff RSP: 0018:ffffc90000a18ca8 EFLAGS: 00000047 RAX: 0000000000000001 RBX: 1ffff92000143197 RCX: ffffffff8176abc9 RDX: fffffbfff20be083 RSI: 0000000000000008 RDI: ffffffff905f0410 RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff20be082 R10: ffffffff905f0417 R11: 00000000000a4001 R12: ffff88806b6b0300 R13: ffff8880670d9c00 R14: ffff88806b6b0340 R15: ffff8880670d8000 FS: 000055558d54c500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f33816756c0 CR3: 0000000033cfc000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline] _raw_spin_unlock+0x16/0x50 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:391 [inline] advance_sched+0x611/0xc60 net/sched/sch_taprio.c:981 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __hrtimer_run_queues+0x20a/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:lock_acquire+0x9c/0xb0 kernel/locking/lockdep.c:5853 Code: 89 f9 5b 45 89 f0 44 89 e9 44 89 e2 89 ee 5d 41 5c 41 5d 41 5e 41 5f e9 e2 fb ff ff 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f cc cc cc cc 48 c7 c7 34 37 5f 90 e8 43 2f 86 00 eb ab 90 90 90 RSP: 0018:ffffc90003a176c8 EFLAGS: 00000282 RAX: 0000000000000000 RBX: 00000000000723ed RCX: ffffffff82089f94 RDX: 0000000000000000 RSI: ffffffff8bd1b3e0 RDI: ffffffff8da72be8 RBP: ffff88813fffa700 R08: 0000000000000000 R09: fffffbfff20be082 R10: ffffffff905f0417 R11: 00000000000a4001 R12: 0000000000000001 R13: ffff88813fffa540 R14: 0000000000000000 R15: 1ffff92000742ee7 rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock_sched include/linux/rcupdate.h:941 [inline] pfn_valid include/linux/mmzone.h:2048 [inline] page_table_check_set+0x11a/0x9c0 mm/page_table_check.c:110 __page_table_check_ptes_set+0x2d0/0x3e0 mm/page_table_check.c:225 page_table_check_ptes_set include/linux/page_table_check.h:74 [inline] set_ptes include/linux/pgtable.h:288 [inline] __copy_present_ptes mm/memory.c:967 [inline] copy_present_ptes mm/memory.c:1050 [inline] copy_pte_range mm/memory.c:1173 [inline] copy_pmd_range mm/memory.c:1261 [inline] copy_pud_range mm/memory.c:1298 [inline] copy_p4d_range mm/memory.c:1322 [inline] copy_page_range+0x2088/0x57d0 mm/memory.c:1420 dup_mmap kernel/fork.c:751 [inline] dup_mm kernel/fork.c:1695 [inline] copy_mm kernel/fork.c:1744 [inline] copy_process+0x7e77/0x8df0 kernel/fork.c:2395 kernel_clone+0xfd/0x960 kernel/fork.c:2807 __do_sys_clone+0xba/0x100 kernel/fork.c:2950 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: 0033:0x7f3380976793 Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00 RSP: 002b:00007fffea35e9a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3380976793 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 000055558d54c7d0 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000003dfc3 R14: 000000000003dfaf R15: 00007fffea35eb30 rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g46437 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=1 timer-softirq=18427 rcu: rcu_preempt kthread starved for 10506 jiffies! g46437 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:28008 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