sl1: NETDEV WATCHDOG: CPU: 0: transmit queue 0 timed out 20390 ms sl1: transmit timed out, bad line quality? watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [kworker/u4:0:18496] Modules linked in: irq event stamp: 1463534 hardirqs last enabled at (1463533): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 hardirqs last disabled at (1463534): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1088 softirqs last enabled at (1463532): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last enabled at (1463532): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last enabled at (1463532): [] __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661 softirqs last disabled at (1463493): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last disabled at (1463493): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last disabled at (1463493): [] __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661 CPU: 0 PID: 18496 Comm: kworker/u4:0 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline] RIP: 0010:smp_call_function_many_cond+0xddf/0x1130 kernel/smp.c:855 Code: 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 da d6 0a 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 15 d3 0a 00 eb 38 f3 90 <42> 0f b6 04 2b 84 c0 75 11 41 f7 04 24 01 00 00 00 74 1e e8 f9 d2 RSP: 0018:ffffc9000f287780 EFLAGS: 00000293 RAX: ffffffff817abc97 RBX: 1ffff110171e82ad RCX: ffff8880217a9e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000f287900 R08: ffffffff90da8507 R09: 1ffffffff21b50a0 R10: dffffc0000000000 R11: fffffbfff21b50a1 R12: ffff8880b8f41568 R13: dffffc0000000000 R14: ffff8880b8e3d348 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffeb00acff8 CR3: 000000000cb30000 CR4: 00000000003506f0 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1022 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2222 [inline] text_poke_bp_batch+0x318/0x930 arch/x86/kernel/alternative.c:2432 text_poke_flush arch/x86/kernel/alternative.c:2623 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2630 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x123/0x240 kernel/jump_label.c:207 static_key_enable+0x1a/0x20 kernel/jump_label.c:220 toggle_allocation_gate+0xaa/0x250 mm/kfence/core.c:831 process_one_work kernel/workqueue.c:2634 [inline] process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 19498 Comm: syz.6.4069 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:check_preemption_disabled+0x47/0x110 lib/smp_processor_id.c:55 Code: 94 75 65 8b 0d c2 d4 94 75 f7 c1 ff ff ff 7f 74 1f 65 48 8b 0c 25 28 00 00 00 48 3b 4c 24 08 0f 85 c4 00 00 00 48 83 c4 10 5b <41> 5e 41 5f 5d c3 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 RSP: 0000:ffffc900001f0d00 EFLAGS: 00000082 RAX: 0000000000000001 RBX: ffff8880b8f2b848 RCX: 4c9cca02cf645300 RDX: ffff888063cb5a00 RSI: ffffffff8afc6ae0 RDI: ffffffff8afc6aa0 RBP: ffffc900001f0e90 R08: ffffffff8e4a8d6f R09: 1ffffffff1c951ad R10: dffffc0000000000 R11: fffffbfff1c951ae R12: ffff888030a74340 R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000001 FS: 0000555583f48500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c3fec4b CR3: 0000000077075000 CR4: 00000000003506e0 Call Trace: rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline] rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:700 trace_hrtimer_expire_entry include/trace/events/timer.h:239 [inline] __run_hrtimer kernel/time/hrtimer.c:1747 [inline] __hrtimer_run_queues+0x493/0xc40 kernel/time/hrtimer.c:1814 hrtimer_interrupt+0x3c9/0x9c0 kernel/time/hrtimer.c:1876 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1077 [inline] __sysvec_apic_timer_interrupt+0xfb/0x3b0 arch/x86/kernel/apic/apic.c:1094 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:percpu_counter_add_batch+0x235/0x280 lib/percpu_counter.c:103 Code: 4d 85 f6 75 16 e8 cb 87 35 fd eb 15 e8 c4 87 35 fd e8 df c5 1e 06 4d 85 f6 74 ea e8 b5 87 35 fd fb 48 c7 44 24 40 0e 36 e0 45 <48> 8b 44 24 38 4a c7 04 38 00 00 00 00 66 42 c7 44 38 09 00 00 42 RSP: 0000:ffffc9000eb8f960 EFLAGS: 00000293 RAX: ffffffff845007db RBX: 0000000000000000 RCX: ffff888063cb5a00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000eb8fa60 R08: ffffffff90da8507 R09: 1ffffffff21b50a0 R10: dffffc0000000000 R11: fffffbfff21b50a1 R12: 1ffff1100fc55a1d R13: 000000000000000f R14: 0000000000000200 R15: dffffc0000000000 percpu_counter_add include/linux/percpu_counter.h:69 [inline] add_mm_counter include/linux/mm.h:2629 [inline] set_pte_range+0x364/0x6a0 mm/memory.c:4403 filemap_map_order0_folio mm/filemap.c:3599 [inline] filemap_map_pages+0xcdd/0x1630 mm/filemap.c:3645 do_fault_around mm/memory.c:4573 [inline] do_read_fault mm/memory.c:4606 [inline] do_fault mm/memory.c:4753 [inline] do_pte_missing mm/memory.c:3688 [inline] handle_pte_fault mm/memory.c:5025 [inline] __handle_mm_fault mm/memory.c:5166 [inline] handle_mm_fault+0x379b/0x4920 mm/memory.c:5331 do_user_addr_fault+0xad0/0x12e0 arch/x86/mm/fault.c:1324 handle_page_fault arch/x86/mm/fault.c:1465 [inline] exc_page_fault+0x67/0x110 arch/x86/mm/fault.c:1521 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608 RIP: 0033:0x7f981546f24d Code: ff 48 83 e8 01 48 89 ee bf 01 00 00 00 48 c1 e0 0e 48 c1 ee 06 48 01 c8 48 89 e9 81 e6 ff 3f 00 00 48 c1 e9 03 83 e1 07 d3 e7 <40> 84 bc 06 20 20 00 00 0f 85 11 fd ff ff e9 c0 fd ff ff e8 fb 26 RSP: 002b:00007ffc60d6fbb0 EFLAGS: 00010202 RAX: 000000110c3fc000 RBX: 00007f9816315720 RCX: 0000000000000002 RDX: 0000000000000ad6 RSI: 0000000000000c2b RDI: 0000000000000004 RBP: ffffffff81130ad6 R08: 00007f98157e6308 R09: 00007f98157d2000 R10: 00007f98133f6008 R11: 0000000000000017 R12: 0000000000000017 R13: 0000000000000000 R14: ffffffff81130f8e R15: 0000000000000070