RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 00005555763827d0 R11: 0000000000000246 R12: 0000000000000000 R13: 00000000000927c0 R14: 00000000000cf65c R15: 00007ffc2cda6a80 watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz-executor:8911] Modules linked in: irq event stamp: 4976902 hardirqs last enabled at (4976901): [] irqentry_exit+0x1dd/0x8c0 kernel/entry/common.c:219 hardirqs last disabled at (4976902): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (4976900): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (4976900): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (4976900): [] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:723 softirqs last disabled at (4976875): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (4976875): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (4976875): [] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 8911 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0xe02/0x15e0 kernel/smp.c:877 Code: 10 4c 89 74 24 10 49 89 d5 48 89 d5 48 89 54 24 18 49 c1 ed 03 83 e5 07 4d 01 e5 83 c5 03 e8 e5 5b 0c 00 f3 90 41 0f b6 45 00 <40> 38 c5 7c 08 84 c0 0f 85 b6 05 00 00 8b 43 08 31 ff 83 e0 01 41 RSP: 0018:ffffc90003007720 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff8880b8443020 RCX: ffffffff81b27a71 RDX: ffff888031cd5b80 RSI: ffffffff81b27a4b RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffed1017088605 R14: 0000000000000001 R15: 0000000000000000 FS: 0000555576382500(0000) GS:ffff8881249f6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e81dff8 CR3: 00000000778f4000 CR4: 0000000000350ef0 Call Trace: on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1043 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline] flush_tlb_multi arch/x86/mm/tlb.c:1382 [inline] flush_tlb_mm_range+0x2f0/0x12c0 arch/x86/mm/tlb.c:1472 dup_mmap+0xd04/0x20e0 mm/mmap.c:1866 dup_mm kernel/fork.c:1529 [inline] copy_mm kernel/fork.c:1581 [inline] copy_process+0x3b9f/0x7430 kernel/fork.c:2221 kernel_clone+0xfc/0x910 kernel/fork.c:2651 __do_sys_clone+0xce/0x120 kernel/fork.c:2792 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7848b85e93 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:00007ffc2cda68e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7848b85e93 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 00005555763827d0 R11: 0000000000000246 R12: 0000000000000000 R13: 00000000000927c0 R14: 00000000000cf65c R15: 00007ffc2cda6a80 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 22055 Comm: syz.1.5631 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__lock_acquire+0x1e5/0x2890 kernel/locking/lockdep.c:5174 Code: d8 81 e2 00 00 04 00 09 c8 09 d0 8b 94 24 c8 00 00 00 44 09 c0 c1 e2 14 09 d0 8b 94 24 b8 00 00 00 c1 e2 15 09 d0 41 8b 56 20 <81> e2 ff 1f 00 00 09 d0 41 89 46 20 8b 84 24 c0 00 00 00 41 89 46 RSP: 0018:ffffc90000007bc0 EFLAGS: 00000006 RAX: 00000000000c4000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000000c4000 RSI: 0000000000000000 RDI: ffffffff9ae203b0 RBP: 0000000000000004 R08: 0000000000080000 R09: 0000000000000000 R10: 0000000000000000 R11: ffff88802c5f8b30 R12: ffff88802c5f8000 R13: ffffffff9ae203b0 R14: ffff88802c5f8bd0 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881248f6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3061dff8 CR3: 000000003d394000 CR4: 0000000000350ef0 Call Trace: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x179/0x330 kernel/locking/lockdep.c:5825 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 debug_object_activate+0x14c/0x4c0 lib/debugobjects.c:818 debug_hrtimer_activate kernel/time/hrtimer.c:438 [inline] debug_activate kernel/time/hrtimer.c:477 [inline] enqueue_hrtimer+0x23/0x380 kernel/time/hrtimer.c:1081 __run_hrtimer kernel/time/hrtimer.c:1794 [inline] __hrtimer_run_queues+0xa31/0xc40 kernel/time/hrtimer.c:1841 hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1903 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1045 [inline] __sysvec_apic_timer_interrupt+0x10b/0x3c0 arch/x86/kernel/apic/apic.c:1062 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:srso_alias_safe_ret+0x5/0x7 arch/x86/lib/retpoline.S:213 Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 48 8d 64 24 08 cc e8 f4 ff ff ff 0f 0b cc cc cc cc cc cc cc cc cc cc cc cc cc RSP: 0018:ffffc9000dd0f818 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff820be5db RDX: ffff88802c5f8000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffff88802c5f8b30 R12: 00007f6895eed000 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffea000103bd00 folio_mapcount include/linux/mm.h:1393 [inline] zap_present_folio_ptes mm/memory.c:1652 [inline] zap_present_ptes mm/memory.c:1708 [inline] do_zap_pte_range mm/memory.c:1810 [inline] zap_pte_range mm/memory.c:1854 [inline] zap_pmd_range mm/memory.c:1946 [inline] zap_pud_range mm/memory.c:1975 [inline] zap_p4d_range mm/memory.c:1996 [inline] unmap_page_range+0x1bbb/0x43c0 mm/memory.c:2017 unmap_single_vma+0x153/0x240 mm/memory.c:2059 unmap_vmas+0x218/0x470 mm/memory.c:2101 exit_mmap+0x1b0/0xb60 mm/mmap.c:1277 __mmput+0x12a/0x410 kernel/fork.c:1173 mmput+0x62/0x70 kernel/fork.c:1196 exit_mm kernel/exit.c:581 [inline] do_exit+0x7d7/0x2bd0 kernel/exit.c:959 do_group_exit+0xd3/0x2a0 kernel/exit.c:1112 __do_sys_exit_group kernel/exit.c:1123 [inline] __se_sys_exit_group kernel/exit.c:1121 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1121 x64_sys_call+0x151c/0x1740 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f689718f749 Code: Unable to access opcode bytes at 0x7f689718f71f. RSP: 002b:00007ffea5750ff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f689718f749 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffea575105c R08: 00000005a57510ef R09: 00000000000927c0 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000165 R13: 00000000000927c0 R14: 00000000000cf9ee R15: 00007ffea57510b0