RBP: 00007f363a47a1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001 R13: 00007ffcc539770f R14: 00007f363a47a300 R15: 0000000000022000 watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.1:4863] Modules linked in: irq event stamp: 249608 hardirqs last enabled at (249607): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (249608): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (249522): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (249517): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 4863 Comm: syz-executor.1 Not tainted 6.17.0-next-20251007 #1 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:smp_call_function_many_cond+0xa38/0x1110 Code: 31 ff 83 e5 01 89 ee e8 f6 68 0b 00 85 ed 74 43 4d 89 ec 4c 89 ed 49 c1 ec 03 83 e5 07 4d 01 fc 83 c5 03 e8 aa 6d 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 d5 04 00 00 8b 43 08 31 RSP: 0018:ffff8880481176f8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff88806ce3e560 RCX: ffffffff8168892c RDX: ffff88801bc2d280 RSI: ffffffff81688906 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 1ffff1100d9e6bb9 R12: ffffed100d9c7cad R13: ffff88806ce3e568 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880e54be000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f793b840000 CR3: 000000003d3ca000 CR4: 0000000000350ef0 Call Trace: on_each_cpu_cond_mask+0x57/0xa0 kvm_flush_tlb_multi+0x1e8/0x320 flush_tlb_mm_range+0x3fc/0x1420 tlb_finish_mmu+0x3d5/0x7e0 exit_mmap+0x39d/0xaa0 mmput+0xd5/0x390 do_exit+0x79d/0x2970 do_group_exit+0xd3/0x2a0 get_signal+0x2311/0x2340 arch_do_signal_or_restart+0x80/0x780 exit_to_user_mode_loop+0x7d/0xf0 do_syscall_64+0x31d/0x390 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f299050eb19 Code: Unable to access opcode bytes at 0x7f299050eaef. RSP: 002b:00007f298da84218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f2990621f68 RCX: 00007f299050eb19 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2990621f68 RBP: 00007f2990621f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2990621f6c R13: 00007ffc2968232f R14: 00007f298da84300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 4864 Comm: syz-executor.7 Not tainted 6.17.0-next-20251007 #1 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:perf_trace_lock_acquire+0x3d8/0x700 Code: 41 b8 01 00 00 00 49 89 44 24 10 6a 00 41 56 e8 ee ca 38 00 58 5a 48 b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 43 08 00 00 00 00 48 8b 45 d0 65 48 2b 05 3d 2c 55 06 0f 85 fc RSP: 0018:ffff88806ce08968 EFLAGS: 00000086 RAX: dffffc0000000000 RBX: ffffed100d9c1136 RCX: 0000000000000002 RDX: 1ffffd1ffff8180d RSI: ffff88806ce28098 RDI: ffffffff85d24668 RBP: ffff88806ce08a58 R08: ffffffff84ea75c0 R09: 0000000000000001 R10: ffffffff85d24600 R11: 0000000000000001 R12: ffff88806ce280b0 R13: ffff88806ce08a30 R14: ffffe8ffffc0c068 R15: 0000000000000012 FS: 00007fc1d41ea700(0000) GS:ffff8880e53be000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000017557000 CR4: 0000000000350ef0 Call Trace: lock_acquire+0xc5/0x2f0 _raw_spin_lock_irqsave+0x3a/0x60 hrtimer_try_to_cancel.part.0+0x6e/0x250 hrtimer_cancel+0x34/0x70 cpu_clock_event_stop+0x106/0x140 __perf_event_overflow+0x7e4/0xcc0 perf_swevent_hrtimer+0x316/0x370 __hrtimer_run_queues+0x60f/0xac0 hrtimer_interrupt+0x369/0x830 __sysvec_apic_timer_interrupt+0xbb/0x330 sysvec_apic_timer_interrupt+0x6b/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__schedule+0xe86/0x3580 Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 73 1d 00 00 4c 89 73 10 4c 89 e7 4c 89 f6 e8 f2 40 60 fc 48 89 c7 e8 ca 18 87 fc <8b> bd e0 fe ff ff e8 8f f1 86 fc 48 b8 00 00 00 00 00 fc ff df 48 RSP: 0018:ffff8880492df7b8 EFLAGS: 00000202 RAX: 0000000000000d1f RBX: ffff88806ce36f00 RCX: 0000000000000040 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84c01de2 RBP: ffff8880492df8f8 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff86644c57 R11: 0000000000000001 R12: ffff888018f78000 R13: ffff888018f78000 R14: ffff888018f78000 R15: ffffffff85a4ce40 __cond_resched+0x4c/0x80 kmem_cache_alloc_noprof+0x421/0x680 vm_area_dup+0x25/0x6f0 dup_mmap+0x805/0x1d00 copy_process+0x6349/0x7410 kernel_clone+0xea/0x7f0 __do_sys_fork+0x94/0xd0 do_syscall_64+0xbf/0x390 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc1d6c74b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc1d41ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007fc1d6d87f60 RCX: 00007fc1d6c74b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fc1d6ccef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffce9aff3af R14: 00007fc1d41ea300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 31 ff xor %edi,%edi 2: 83 e5 01 and $0x1,%ebp 5: 89 ee mov %ebp,%esi 7: e8 f6 68 0b 00 callq 0xb6902 c: 85 ed test %ebp,%ebp e: 74 43 je 0x53 10: 4d 89 ec mov %r13,%r12 13: 4c 89 ed mov %r13,%rbp 16: 49 c1 ec 03 shr $0x3,%r12 1a: 83 e5 07 and $0x7,%ebp 1d: 4d 01 fc add %r15,%r12 20: 83 c5 03 add $0x3,%ebp 23: e8 aa 6d 0b 00 callq 0xb6dd2 28: f3 90 pause * 2a: 41 0f b6 04 24 movzbl (%r12),%eax <-- trapping instruction 2f: 40 38 c5 cmp %al,%bpl 32: 7c 08 jl 0x3c 34: 84 c0 test %al,%al 36: 0f 85 d5 04 00 00 jne 0x511 3c: 8b 43 08 mov 0x8(%rbx),%eax 3f: 31 .byte 0x31