RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 000055557e99c7d0 R11: 0000000000000246 R12: 0000000000000000 R13: 00000000000927c0 R14: 00000000000ab224 R15: 00007ffc042de460 watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz-executor:9691] Modules linked in: irq event stamp: 1193520 hardirqs last enabled at (1193519): [] irqentry_exit+0x3b/0x90 kernel/entry/common.c:357 hardirqs last disabled at (1193520): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (1193518): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (1193518): [] handle_softirqs+0x5be/0x8e0 kernel/softirq.c:607 softirqs last disabled at (1193497): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (1193497): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (1193497): [] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 9691 Comm: syz-executor Not tainted 6.15.0-rc6-syzkaller-00051-g405e6c37c89e #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0x4aa/0x1290 kernel/smp.c:885 Code: 0c 00 85 ed 74 48 48 8b 44 24 20 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 dd 17 0c 00 f3 90 41 0f b6 04 24 <40> 38 c5 7c 08 84 c0 0f 85 de 0b 00 00 8b 43 08 31 ff 83 e0 01 41 RSP: 0018:ffffc900015af8b8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff8880b84415e0 RCX: ffffffff81af2dd9 RDX: ffff888059479e00 RSI: ffffffff81af2db3 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffed10170882bd R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8880b853b180 FS: 000055557e99c500(0000) GS:ffff888124ae3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000029a2a000 CR4: 0000000000350ef0 Call Trace: on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1052 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline] flush_tlb_multi arch/x86/mm/tlb.c:1291 [inline] flush_tlb_mm_range+0x322/0x1780 arch/x86/mm/tlb.c:1381 dup_mmap kernel/fork.c:765 [inline] dup_mm kernel/fork.c:1734 [inline] copy_mm kernel/fork.c:1786 [inline] copy_process+0x7961/0x91a0 kernel/fork.c:2429 kernel_clone+0xfc/0x960 kernel/fork.c:2844 __do_sys_clone+0xce/0x120 kernel/fork.c:2987 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa80cd851d3 Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00 RSP: 002b:00007ffc042de2c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa80cd851d3 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 000055557e99c7d0 R11: 0000000000000246 R12: 0000000000000000 R13: 00000000000927c0 R14: 00000000000ab224 R15: 00007ffc042de460 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.15.0-rc6-syzkaller-00051-g405e6c37c89e #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:do_raw_spin_lock+0x1aa/0x2b0 kernel/locking/spinlock_debug.c:114 Code: 00 00 00 fc ff df 48 c1 ea 03 65 4c 8b 25 16 5f 0b 12 80 3c 02 00 0f 85 e8 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 63 10 <48> c7 44 05 00 00 00 00 00 48 8b 44 24 60 65 48 2b 05 d8 5e 0b 12 RSP: 0018:ffffc90000007c98 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffffffff9ad3e3d8 RCX: ffffffff8198709c RDX: 1ffffffff35a7c7d RSI: 0000000000000004 RDI: ffffc90000007cc0 RBP: 1ffff92000000f94 R08: 0000000000000001 R09: fffff52000000f98 R10: 0000000000000003 R11: 0000000000000000 R12: ffffffff8e097740 R13: ffffffff9ad3e3e8 R14: 0000000000000000 R15: 1ffff92000000fac FS: 0000000000000000(0000) GS:ffff8881249e3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30f0fff8 CR3: 000000002f656000 CR4: 0000000000350ef0 Call Trace: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline] _raw_spin_lock_irqsave+0x42/0x60 kernel/locking/spinlock.c:162 debug_object_deactivate+0x135/0x3a0 lib/debugobjects.c:873 debug_hrtimer_deactivate kernel/time/hrtimer.c:450 [inline] debug_deactivate kernel/time/hrtimer.c:490 [inline] __run_hrtimer kernel/time/hrtimer.c:1729 [inline] __hrtimer_run_queues+0x46f/0xad0 kernel/time/hrtimer.c:1825 hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1887 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x10b/0x3f0 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:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:81 Code: f5 63 02 e9 7e 94 a5 f5 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d f3 2f 1f 00 fb f4 57 94 a5 f5 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 RSP: 0018:ffffffff8e007e10 EFLAGS: 00000286 RAX: 000000000105190f RBX: 0000000000000000 RCX: ffffffff8b6ac419 RDX: 0000000000000000 RSI: ffffffff8dbde855 RDI: ffffffff8bf47520 RBP: fffffbfff1c12ee8 R08: 0000000000000001 R09: ffffed10170865bd R10: ffff8880b8432deb R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff8e097740 R14: ffffffff90852010 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline] default_idle+0x13/0x20 arch/x86/kernel/process.c:748 default_idle_call+0x6d/0xb0 kernel/sched/idle.c:117 cpuidle_idle_call kernel/sched/idle.c:185 [inline] do_idle+0x391/0x510 kernel/sched/idle.c:325 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:423 rest_init+0x16b/0x2b0 init/main.c:743 start_kernel+0x3e9/0x4d0 init/main.c:1099 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:513 x86_64_start_kernel+0xb0/0xc0 arch/x86/kernel/head64.c:494 common_startup_64+0x13e/0x148