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: 1-...!: (2 GPs behind) idle=3174/1/0x4000000000000000 softirq=30252/30270 fqs=2 rcu: (detected by 0, t=10502 jiffies, g=24725, q=779 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 10384 Comm: modprobe Not tainted 6.12.0-rc4-syzkaller-00168-ge31a8219fbfc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:kasan_check_range+0xc/0x290 mm/kasan/generic.c:188 Code: 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 41 57 41 56 41 54 53 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 f8 0f 82 56 02 RSP: 0018:ffffc90000a188e0 EFLAGS: 00000046 RAX: 0000000000000001 RBX: 000000000000006e RCX: ffffffff81705b8c RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff942ca808 RBP: 8f1279fecd576743 R08: ffffffff942ca807 R09: 1ffffffff2859500 R10: dffffc0000000000 R11: fffffbfff2859501 R12: 0000000000000000 R13: ffff88807b318ad8 R14: 1ffff1100f66316a R15: ffff88807b318b50 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fabe53a23b0 CR3: 0000000069b5c000 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] hlock_class kernel/locking/lockdep.c:228 [inline] __lock_acquire+0xf3c/0x2050 kernel/locking/lockdep.c:5198 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 debug_object_activate+0x16d/0x510 lib/debugobjects.c:708 debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline] debug_activate kernel/time/hrtimer.c:478 [inline] enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1085 __run_hrtimer kernel/time/hrtimer.c:1708 [inline] __hrtimer_run_queues+0x6cb/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: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:debug_lockdep_rcu_enabled+0x2a/0x40 kernel/rcu/update.c:321 Code: f3 0f 1e fa 31 c0 83 3d cf 12 56 04 00 74 1e 83 3d 26 44 56 04 00 74 15 65 48 8b 0c 25 c0 d7 03 00 31 c0 83 b9 dc 0a 00 00 00 <0f> 94 c0 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 RSP: 0018:ffffc9000be2f458 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff888031e9c268 RCX: ffff88807b318000 RDX: ffff88807b318000 RSI: 000000000000000a RDI: 0000000000000003 RBP: ffffc9000be2f670 R08: ffffffff8bbccb14 R09: ffffffff8bbcc91d R10: 0000000000000003 R11: ffff88807b318000 R12: 0000000000000003 R13: 0000000000000000 R14: ffff88807bc62640 R15: dffffc0000000000 mt_slot lib/maple_tree.c:789 [inline] mas_slot lib/maple_tree.c:822 [inline] mas_validate_limits lib/maple_tree.c:7518 [inline] mt_validate+0x17ee/0x4ac0 lib/maple_tree.c:7603 validate_mm+0xf5/0x550 mm/vma.c:534 mmap_region+0x1ad2/0x2a30 mm/mmap.c:1569 do_mmap+0x8f0/0x1000 mm/mmap.c:496 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588 ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:542 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: 0033:0x7fabe561bb74 Code: 63 08 44 89 e8 5b 41 5c 41 5d c3 41 89 ca 41 f7 c1 ff 0f 00 00 74 0c c7 05 f5 46 01 00 16 00 00 00 eb 17 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 dc 46 01 00 48 83 c8 ff c3 0f RSP: 002b:00007fff0d1c0628 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fff0d1c0668 RCX: 00007fabe561bb74 RDX: 0000000000000005 RSI: 0000000000006000 RDI: 00007fabe5377000 RBP: 00007fff0d1c0a00 R08: 0000000000000000 R09: 0000000000003000 R10: 0000000000000812 R11: 0000000000000246 R12: 00007fabe55f8ac0 R13: 00007fff0d1c0a88 R14: 0000000000002ee0 R15: 0000000000000000 rcu: rcu_preempt kthread starved for 10495 jiffies! g24725 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:25200 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x18af/0x4bd0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6782 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: CPU: 0 UID: 0 PID: 10367 Comm: syz.0.1316 Not tainted 6.12.0-rc4-syzkaller-00168-ge31a8219fbfc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0x1a04/0x2ca0 kernel/smp.c:884 Code: 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 01 ef 0b 00 eb 38 f3 90 42 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 <74> 1e e8 e5 ee 0b 00 eb e4 44 89 e9 80 e1 07 80 c1 03 38 c1 7c e2 RSP: 0018:ffffc9000bf3f280 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 1ffff110170e8919 RCX: 0000000000040000 RDX: ffffc900048b1000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc9000bf3f480 R08: ffffffff8188e8aa R09: 1ffffffff2859500 R10: dffffc0000000000 R11: fffffbfff2859501 R12: dffffc0000000000 R13: ffff8880b87448c8 R14: ffff8880b863fc80 R15: 0000000000000001 FS: 00007f3f3f51d6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001200 CR3: 0000000024d0a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1051 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2085 [inline] text_poke_bp_batch+0x726/0xb30 arch/x86/kernel/alternative.c:2357 text_poke_bp+0xb0/0x100 arch/x86/kernel/alternative.c:2522 __static_call_transform+0x51a/0x810 arch/x86/kernel/static_call.c:111 arch_static_call_transform+0x141/0x380 arch/x86/kernel/static_call.c:163 __static_call_update+0xd8/0x5e0 kernel/static_call_inline.c:147 bpf_dispatcher_update kernel/bpf/dispatcher.c:126 [inline] bpf_dispatcher_change_prog+0xe5f/0xf10 kernel/bpf/dispatcher.c:167 bpf_prog_test_run_xdp+0x998/0x11e0 net/bpf/test_run.c:1337 bpf_prog_test_run+0x2e4/0x360 kernel/bpf/syscall.c:4262 __sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5667 __do_sys_bpf kernel/bpf/syscall.c:5756 [inline] __se_sys_bpf kernel/bpf/syscall.c:5754 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5754 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: 0033:0x7f3f3e77e719 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:00007f3f3f51d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f3f3e935f80 RCX: 00007f3f3e77e719 RDX: 0000000000000048 RSI: 0000000020000600 RDI: 000000000000000a RBP: 00007f3f3e7f132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f3f3e935f80 R15: 00007fff997db908 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