sched: DL replenish lagged too much watchdog: BUG: soft lockup - CPU#1 stuck for 130s! [syz.2.3152:17950] Modules linked in: irq event stamp: 15356835 hardirqs last enabled at (15356834): [] irqentry_exit+0x59e/0x620 kernel/entry/common.c:242 hardirqs last disabled at (15356835): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (14973026): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (14973026): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (14973026): [] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723 softirqs last disabled at (14973029): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (14973029): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (14973029): [] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 17950 Comm: syz.2.3152 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:ifname_compare_aligned include/linux/netfilter/x_tables.h:404 [inline] RIP: 0010:ip6_packet_match net/ipv6/netfilter/ip6_tables.c:70 [inline] RIP: 0010:ip6t_do_table+0x7dc/0x1560 net/ipv6/netfilter/ip6_tables.c:306 Code: 42 80 3c 28 00 74 05 e8 f2 71 c5 f7 49 33 5e 58 4d 8d 66 78 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 e7 e8 d4 71 c5 f7 <49> 23 1c 24 4c 09 fb 41 0f 95 c7 31 ff 48 89 de e8 6f 1f 5b f7 8b RSP: 0018:ffffc90000a08660 EFLAGS: 00000246 RAX: 1ffff1100849bc65 RBX: 0000000000003070 RCX: ffff88807cb8a120 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8880424de308 RBP: ffffc90000a08850 R08: ffffc90000a087cf R09: 0000000000000000 R10: ffffc90000a087b0 R11: fffff520001410fa R12: ffff8880424de328 R13: dffffc0000000000 R14: ffff8880424de2b0 R15: 0000000000000000 FS: 00007efdae7386c0(0000) GS:ffff888125563000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe8404abcd0 CR3: 000000005cbf2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: ip6t_mangle_out net/ipv6/netfilter/ip6table_mangle.c:49 [inline] ip6table_mangle_hook+0x275/0x740 net/ipv6/netfilter/ip6table_mangle.c:72 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline] nf_hook_slow+0xc5/0x220 net/netfilter/core.c:623 nf_hook include/linux/netfilter.h:273 [inline] NF_HOOK include/linux/netfilter.h:316 [inline] ndisc_send_skb+0x1506/0x1670 net/ipv6/ndisc.c:512 addrconf_rs_timer+0x395/0x6d0 net/ipv6/addrconf.c:4041 call_timer_fn+0x192/0x640 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2373 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2385 run_timer_base kernel/time/timer.c:2394 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2404 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__sanitizer_cov_trace_pc+0x45/0x70 kernel/kcov.c:222 Code: ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 94 16 00 00 00 74 2c 8b 91 70 16 00 00 83 fa 02 75 21 48 8b 91 78 16 00 00 48 8b 32 <48> 8d 7e 01 8b 89 74 16 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 RSP: 0018:ffffc90003a47138 EFLAGS: 00000246 RAX: ffffffff81cf8c6c RBX: 000000000000002c RCX: ffff88808f7abd00 RDX: ffffc900061e1000 RSI: 0000000000004369 RDI: 000000000000002c RBP: ffffc90003a47280 R08: 0000000000000022 R09: ffffffff8e75e3e0 R10: ffffc90003a46f08 R11: ffffffff81b0bfa0 R12: dffffc0000000000 R13: 000000000000000d R14: ffffc90003a471e0 R15: ffffc90003a47200 perf_trace_buf_alloc+0x1c/0x280 kernel/trace/trace_event_perf.c:399 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x1a0/0x410 include/trace/events/lock.h:50 __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x392/0x3d0 kernel/locking/lockdep.c:5879 rcu_lock_release include/linux/rcupdate.h:322 [inline] rcu_read_unlock include/linux/rcupdate.h:881 [inline] class_rcu_destructor include/linux/rcupdate.h:1193 [inline] unwind_next_frame+0x1aaa/0x23c0 arch/x86/kernel/unwind_orc.c:695 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 kasan_save_stack+0x3e/0x60 mm/kasan/common.c:57 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:556 __call_rcu_common kernel/rcu/tree.c:3131 [inline] call_rcu+0xee/0x890 kernel/rcu/tree.c:3251 context_switch kernel/sched/core.c:5298 [inline] __schedule+0x15e5/0x52d0 kernel/sched/core.c:6908 __schedule_loop kernel/sched/core.c:6990 [inline] schedule+0x164/0x360 kernel/sched/core.c:7005 futex_do_wait kernel/futex/waitwake.c:358 [inline] __futex_wait+0x1ee/0x420 kernel/futex/waitwake.c:687 futex_wait+0x119/0x380 kernel/futex/waitwake.c:715 do_futex+0x333/0x420 kernel/futex/syscalls.c:130 __do_sys_futex kernel/futex/syscalls.c:207 [inline] __se_sys_futex+0x3a8/0x450 kernel/futex/syscalls.c:188 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efdad79c799 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007efdae7380e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007efdada15fa8 RCX: 00007efdad79c799 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007efdada15fa8 RBP: 00007efdada15fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007efdada16038 R14: 00007ffd76f0ed60 R15: 00007ffd76f0ee48 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 17953 Comm: kworker/u9:3 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Workqueue: hci2 hci_cmd_timeout RIP: 0010:vsnprintf+0xaa6/0xee0 lib/vsprintf.c:2887 Code: 1b f6 49 ff c7 4d 89 fd eb 0d e8 e5 bf 1b f6 4d 89 fd 4c 8b 74 24 08 48 89 e8 48 c1 e8 03 0f b6 04 18 84 c0 75 53 80 7d 00 00 <0f> 84 0e 03 00 00 e8 bf bf 1b f6 49 89 ef e9 39 f6 ff ff e8 b2 bf RSP: 0018:ffffc90004c070b0 EFLAGS: 00000202 RAX: 0000000000000005 RBX: dffffc0000000000 RCX: 000000008bcd8903 RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 00000000ffffffff RBP: ffffffff8bcd896b R08: ffffc90004c07017 R09: 0000000000000000 R10: ffffc90004c07000 R11: fffff52000980e03 R12: ffffc90004c071a0 R13: ffffc90004c0738d R14: 0000000000000801 R15: 0000000000019c09 FS: 0000000000000000(0000) GS:ffff888125463000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcdad43d368 CR3: 000000003012e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: sprintf+0xe7/0x140 lib/vsprintf.c:3111 print_time kernel/printk/printk.c:1359 [inline] info_print_prefix+0x16b/0x360 kernel/printk/printk.c:1385 record_print_text+0x176/0x450 kernel/printk/printk.c:1434 printk_get_next_message+0x29c/0x880 kernel/printk/printk.c:3072 console_emit_next_record kernel/printk/printk.c:3137 [inline] console_flush_one_record kernel/printk/printk.c:3269 [inline] console_flush_all+0x501/0xb20 kernel/printk/printk.c:3343 __console_flush_and_unlock kernel/printk/printk.c:3373 [inline] console_unlock+0xd1/0x1c0 kernel/printk/printk.c:3413 vprintk_emit+0x485/0x560 kernel/printk/printk.c:2479 _printk+0xdd/0x130 kernel/printk/printk.c:2504 bt_err+0x121/0x180 net/bluetooth/lib.c:296 hci_cmd_timeout+0xd8/0x1e0 net/bluetooth/hci_core.c:1470 process_one_work kernel/workqueue.c:3275 [inline] process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245