IPVS: rr: UDP 224.0.0.2:0 - no destination available IPVS: rr: UDP 224.0.0.2:0 - no destination available IPVS: rr: UDP 224.0.0.2:0 - no destination available IPVS: rr: 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): P17781/1:b..l rcu: (detected by 1, t=10506 jiffies, g=68497, q=401 ncpus=2) task:syz-executor state:R running task stack:23744 pid:17781 tgid:17781 ppid:17773 flags:0x00004002 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 vprintk_emit+0x458/0x6f0 kernel/printk/printk.c:2433 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:86 _printk+0xc8/0x100 kernel/printk/printk.c:2457 batadv_check_known_mac_addr+0x230/0x440 net/batman-adv/hard-interface.c:528 batadv_hard_if_event+0x1025/0x1640 net/batman-adv/hard-interface.c:998 notifier_call_chain+0xb7/0x410 kernel/notifier.c:85 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline] call_netdevice_notifiers net/core/dev.c:2048 [inline] dev_set_mac_address+0x370/0x4a0 net/core/dev.c:9206 dev_set_mac_address_user+0x30/0x50 net/core/dev.c:9220 do_setlink.constprop.0+0x7c4/0x3f70 net/core/rtnetlink.c:3064 rtnl_changelink net/core/rtnetlink.c:3723 [inline] __rtnl_newlink net/core/rtnetlink.c:3875 [inline] rtnl_newlink+0x12c7/0x1c50 net/core/rtnetlink.c:4007 rtnetlink_rcv_msg+0x95b/0xea0 net/core/rtnetlink.c:6917 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2542 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg net/socket.c:726 [inline] __sys_sendto+0x488/0x4f0 net/socket.c:2197 __do_sys_sendto net/socket.c:2204 [inline] __se_sys_sendto net/socket.c:2200 [inline] __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2200 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: 0033:0x7fe970781dac RSP: 002b:00007ffd879d3610 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fe971474620 RCX: 00007fe970781dac RDX: 000000000000002c RSI: 00007fe971474670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffd879d3664 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007fe971474670 R15: 0000000000000000 rcu: rcu_preempt kthread timer wakeup didn't happen for 10481 jiffies! g68497 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=57135 rcu: rcu_preempt kthread starved for 10482 jiffies! g68497 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:28240 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: 17876 Comm: syz.3.3141 Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:124 [inline] RIP: 0010:lock_release+0x17a/0x6f0 kernel/locking/lockdep.c:5866 Code: 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 19 05 00 00 49 81 3c 24 a0 17 7c 93 0f 84 65 02 00 00 9c 8f 04 24 48 c7 c7 00 db 6c 8b e8 59 23 b3 09 48 89 ea 83 e5 07 48 b8 00 RSP: 0018:ffffc90000007cb8 EFLAGS: 00000006 RAX: dffffc0000000000 RBX: 1ffff92000000f99 RCX: ffffffff8176abc9 RDX: 1ffffffff1c376a0 RSI: 0000000000000000 RDI: ffff88801eb98adc RBP: ffffffff905f3734 R08: 0000000000000000 R09: fffffbfff20be082 R10: ffffffff905f0417 R11: 0000000000000001 R12: ffffffff8e1bb500 R13: ffff888034ad6400 R14: ffff88801eb98000 R15: ffff888034ad6000 FS: 00007eff622f36c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007eff622f2fb8 CR3: 0000000034bc6000 CR4: 00000000003526f0 Call Trace: rcu_lock_release include/linux/rcupdate.h:347 [inline] rcu_read_unlock include/linux/rcupdate.h:880 [inline] advance_sched+0x6d7/0xc60 net/sched/sch_taprio.c:987 __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:fixup_red_left+0x0/0x20 mm/slub.c:238 Code: a0 35 8e e8 92 c3 de 02 e9 d4 fe ff ff 66 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 48 89 f0 66 90 c3 cc cc cc cc f6 47 08 02 74 06 8b 57 RSP: 0018:ffffc90003ecf6b8 EFLAGS: 00000287 RAX: 0000000000006000 RBX: ffff888029302000 RCX: ffff888029306000 RDX: 0000000000000000 RSI: ffff888029302000 RDI: ffff88801b042140 RBP: ffffffff846184ad R08: 0000000000002000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801b042140 R13: 0000000000212008 R14: ffff88801b042140 R15: 0000000000000000 nearest_obj mm/slab.h:336 [inline] check_slab_allocation+0xa5/0x130 mm/kasan/common.c:219 kasan_slab_pre_free include/linux/kasan.h:198 [inline] slab_free_hook mm/slub.c:2283 [inline] slab_free mm/slub.c:4598 [inline] kfree+0x11e/0x4b0 mm/slub.c:4746 tomoyo_realpath_from_path+0x1ad/0x720 security/tomoyo/realpath.c:286 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x2ad/0x3c0 security/tomoyo/file.c:771 tomoyo_file_open+0x6b/0x90 security/tomoyo/tomoyo.c:334 security_file_open+0x84/0x1e0 security/security.c:3105 do_dentry_open+0x57e/0x1ea0 fs/open.c:928 vfs_open+0x82/0x3f0 fs/open.c:1075 do_open fs/namei.c:3828 [inline] path_openat+0x1e6a/0x2d60 fs/namei.c:3987 do_filp_open+0x20c/0x470 fs/namei.c:4014 do_sys_openat2+0x17a/0x1e0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_openat fs/open.c:1433 [inline] __se_sys_openat fs/open.c:1428 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1428 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: 0033:0x7eff6157e880 Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 49 94 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 9c 94 02 00 8b 44 RSP: 002b:00007eff622f3000 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007eff6157e880 RDX: 0000000000000002 RSI: 00007eff615f3c6b RDI: 00000000ffffff9c RBP: 00007eff615f3c6b R08: 0000000000000000 R09: 00007eff622f4000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 0000000000000000 R14: 00007eff61745fa0 R15: 00007ffd6e152398 IPVS: rr: UDP 224.0.0.2:0 - no destination available IPVS: rr: UDP 224.0.0.2:0 - no destination available IPVS: rr: UDP 224.0.0.2:0 - no destination available IPVS: rr: UDP 224.0.0.2:0 - no destination available IPVS: rr: UDP 224.0.0.2:0 - no destination available IPVS: rr: UDP 224.0.0.2:0 - no destination available IPVS: rr: UDP 224.0.0.2:0 - no destination available IPVS: rr: UDP 224.0.0.2:0 - no destination available