watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.7:11625] Modules linked in: irq event stamp: 3105253 hardirqs last enabled at (3105252): [<ffffffff8484c78b>] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3105253): [<ffffffff8484b14f>] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3063116): [<ffffffff811a97cc>] handle_softirqs+0x50c/0x770 softirqs last disabled at (3063119): [<ffffffff811a9b64>] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 11625 Comm: syz-executor.7 Not tainted 6.12.0-next-20241120 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kernel_text_address+0x13/0xc0 Code: bb 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 48 89 fd 48 83 ec 08 e8 3f ff ff ff 85 c0 <74> 0f b8 01 00 00 00 48 83 c4 08 5d e9 6c ec 64 03 e8 e7 32 17 00 RSP: 0018:ffff88806ce09a38 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff818bc594 RCX: ffffffff8683cc01 RDX: 1ffff1100d9c135a RSI: 0000000000000000 RDI: ffffffff818bc594 RBP: ffffffff818bc594 R08: ffffffff8683cc12 R09: ffff88806ce09ab8 R10: 000000000003c001 R11: 0000000000023d1f R12: ffff88806ce09b40 R13: 0000000000000000 R14: ffff88801b049b80 R15: ffff88802b9b9cb8 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005636570ca618 CR3: 000000000d97c000 CR4: 0000000000350ef0 Call Trace: <IRQ> __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x38/0x50 kmem_cache_free+0x138/0x470 rcu_core+0x7c9/0x1790 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:kasan_check_range+0x107/0x1b0 Code: 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff 5b <b8> 01 00 00 00 5d 41 5c e9 5c 15 fb 02 41 bc 08 00 00 00 48 89 ea RSP: 0018:ffff88803fd6f1a8 EFLAGS: 00000246 RAX: fffffbfff0c7f283 RBX: 0000000000000000 RCX: ffffffff8182b40e RDX: fffffbfff0c7f283 RSI: 0000000000000008 RDI: ffffffff863f9410 RBP: fffffbfff0c7f282 R08: 0000000000000000 R09: fffffbfff0c7f282 R10: ffffffff863f9417 R11: 00000000000007e0 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffea000107fec0 trace_mm_page_free+0x2e/0x150 free_unref_folios+0xa2/0x1240 folios_put_refs+0x340/0x480 free_pages_and_swap_cache+0x233/0x430 __tlb_batch_free_encoded_pages+0xfa/0x2b0 tlb_flush_mmu+0xea/0x5b0 unmap_page_range+0x19fb/0x3590 unmap_single_vma+0x19a/0x2b0 unmap_vmas+0x1f1/0x450 exit_mmap+0x187/0xac0 mmput+0xd5/0x350 do_exit+0x9ae/0x2a30 do_group_exit+0xd3/0x2a0 get_signal+0x2240/0x2320 arch_do_signal_or_restart+0x81/0x780 syscall_exit_to_user_mode+0x123/0x1e0 do_syscall_64+0xcc/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f61f1384b19 Code: Unable to access opcode bytes at 0x7f61f1384aef. RSP: 002b:00007f61ee8fa218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f61f1497f68 RCX: 00007f61f1384b19 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f61f1497f68 RBP: 00007f61f1497f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f61f1497f6c R13: 00007fff8ca8a17f R14: 00007f61ee8fa300 R15: 0000000000022000 </TASK> Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: bb 66 0f 1f 44 mov $0x441f0f66,%ebx 5: 00 00 add %al,(%rax) 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 66 0f 1f 00 nopw (%rax) 1b: 55 push %rbp 1c: 48 89 fd mov %rdi,%rbp 1f: 48 83 ec 08 sub $0x8,%rsp 23: e8 3f ff ff ff callq 0xffffff67 28: 85 c0 test %eax,%eax * 2a: 74 0f je 0x3b <-- trapping instruction 2c: b8 01 00 00 00 mov $0x1,%eax 31: 48 83 c4 08 add $0x8,%rsp 35: 5d pop %rbp 36: e9 6c ec 64 03 jmpq 0x364eca7 3b: e8 e7 32 17 00 callq 0x173327