IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P14181/1:b..l rcu: (detected by 1, t=10506 jiffies, g=47405, q=146 ncpus=2) task:syz.1.2247 state:R running task stack:27120 pid:14181 tgid:14181 ppid:5840 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6935 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:391 [inline] zap_pte_range mm/memory.c:1705 [inline] zap_pmd_range mm/memory.c:1753 [inline] zap_pud_range mm/memory.c:1782 [inline] zap_p4d_range mm/memory.c:1803 [inline] unmap_page_range+0xb87/0x3d60 mm/memory.c:1824 unmap_single_vma+0x194/0x2b0 mm/memory.c:1870 unmap_vmas+0x22f/0x490 mm/memory.c:1914 exit_mmap+0x1c6/0xb30 mm/mmap.c:1667 __mmput+0x12a/0x480 kernel/fork.c:1347 mmput+0x62/0x70 kernel/fork.c:1369 exit_mm kernel/exit.c:570 [inline] do_exit+0x9bf/0x2d70 kernel/exit.c:925 do_group_exit+0xd3/0x2a0 kernel/exit.c:1087 __do_sys_exit_group kernel/exit.c:1098 [inline] __se_sys_exit_group kernel/exit.c:1096 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1096 x64_sys_call+0x151f/0x1720 arch/x86/include/generated/asm/syscalls_64.h:232 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: 0033:0x7fde5857e819 RSP: 002b:00007fff29dcddb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fde5857e819 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fff29dcde0c R08: 00007fff29dcde9f R09: 000000000009f2a8 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000032 R13: 000000000009f2a8 R14: 000000000009f29e R15: 00007fff29dcde60 rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g47405 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=37434 rcu: rcu_preempt kthread starved for 10500 jiffies! g47405 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 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 14173 Comm: syz.0.2243 Not tainted 6.12.0-syzkaller-09567-g7eef7e306d3c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:arch_atomic_try_cmpxchg arch/x86/include/asm/atomic.h:107 [inline] RIP: 0010:raw_atomic_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:2170 [inline] RIP: 0010:atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1302 [inline] RIP: 0010:queued_spin_lock include/asm-generic/qspinlock.h:111 [inline] RIP: 0010:do_raw_spin_lock+0x13e/0x2c0 kernel/locking/spinlock_debug.c:116 Code: 28 00 00 00 00 e8 12 d7 85 00 be 04 00 00 00 48 8d 7c 24 28 e8 03 d7 85 00 8b 44 24 28 ba 01 00 00 00 89 44 24 04 f0 0f b1 13 <0f> 85 95 00 00 00 65 44 8b 35 f0 f3 97 7e 48 b8 00 00 00 00 00 fc RSP: 0018:ffffc90000007d98 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff8880b862ca00 RCX: ffffffff816be4fd RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000007dc0 RBP: 1ffff92000000fb4 R08: 0000000000000001 R09: fffff52000000fb8 R10: 0000000000000003 R11: 0000000000000001 R12: ffff8880b862ca08 R13: ffff8880b862ca10 R14: ffff8880b862ca00 R15: ffffffff893b6a70 FS: 00005555574a9500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000e038 CR3: 0000000033246000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1743 [inline] __hrtimer_run_queues+0x2be/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:obj_cgroup_put include/linux/memcontrol.h:779 [inline] RIP: 0010:mod_objcg_state+0x2e3/0x8d0 mm/memcontrol.c:2766 Code: 0f 85 e2 04 00 00 48 03 1c ed a0 2b a8 8d 48 89 df e8 31 61 ff ff 4d 85 e4 0f 85 e7 01 00 00 9c 58 f6 c4 02 0f 85 a7 03 00 00 <4d> 85 f6 0f 84 c0 01 00 00 e8 7f 5d 7a ff 31 d2 45 31 c9 45 31 c0 RSP: 0018:ffffc90002e47848 EFLAGS: 00000246 RAX: 0000000000000006 RBX: ffff8880b8639a20 RCX: 1ffffffff2dd2e01 RDX: 0000000000000000 RSI: ffffffff8b6cdee0 RDI: ffffffff8bd1d600 RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff2dd019f R10: ffffffff96e80cff R11: 0000000000000001 R12: 0000000000000200 R13: ffff8880b8639a20 R14: 0000000000000000 R15: ffff8880b8639a78 __memcg_slab_post_alloc_hook+0x4fc/0x9b0 mm/memcontrol.c:3013 memcg_slab_post_alloc_hook mm/slub.c:2152 [inline] slab_post_alloc_hook mm/slub.c:4114 [inline] slab_alloc_node mm/slub.c:4153 [inline] kmem_cache_alloc_noprof+0x366/0x3d0 mm/slub.c:4160 vma_lock_alloc kernel/fork.c:446 [inline] vm_area_dup+0x53/0x2f0 kernel/fork.c:499 __split_vma+0x181/0x1160 mm/vma.c:434 split_vma mm/vma.c:510 [inline] vma_modify.constprop.0+0x1f9/0x3b0 mm/vma.c:1520 vma_modify_flags+0x209/0x2a0 mm/vma.c:1546 mprotect_fixup+0x2c2/0xbe0 mm/mprotect.c:666 do_mprotect_pkey+0x981/0xcf0 mm/mprotect.c:840 __do_sys_mprotect mm/mprotect.c:861 [inline] __se_sys_mprotect mm/mprotect.c:858 [inline] __x64_sys_mprotect+0x78/0xc0 mm/mprotect.c:858 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: 0033:0x7f724177e8d7 Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0a 00 00 00 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:00007ffffca48378 EFLAGS: 00000206 ORIG_RAX: 000000000000000a RAX: ffffffffffffffda RBX: 00007f723f5f66c0 RCX: 00007f724177e8d7 RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f723f5d7000 RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000021000 R11: 0000000000000206 R12: 00007ffffca484d0 R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000 IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available