syz_tun: entered promiscuous mode
syz_tun: left promiscuous mode
loop7: detected capacity change from 0 to 39
watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.0:10071]
Modules linked in:
irq event stamp: 2529603
hardirqs last  enabled at (2529602): [<ffffffff8484a78b>] irqentry_exit+0x3b/0x90
hardirqs last disabled at (2529603): [<ffffffff8484914f>] sysvec_apic_timer_interrupt+0xf/0x80
softirqs last  enabled at (2470816): [<ffffffff811a977c>] handle_softirqs+0x50c/0x770
softirqs last disabled at (2470819): [<ffffffff811a9b14>] __irq_exit_rcu+0xc4/0x100
CPU: 1 UID: 0 PID: 10071 Comm: syz-executor.0 Not tainted 6.12.0-rc7-next-20241115 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:unwind_next_frame+0x1141/0x2490
Code: eb f1 ff ff 4c 89 ff 4c 89 0c 24 c6 05 27 51 68 06 01 e8 32 e8 ff ff 4c 8b 0c 24 e9 cf f1 ff ff 48 b8 00 00 00 00 00 fc ff df <49> 8d 7f 50 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 83 0c 00 00 48
RSP: 0018:ffff88806cf09a08 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffffffff86835122
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff88806cf09ad0 R08: ffffffff86835126 R09: ffff88806cf09ab8
R10: 000000000003c001 R11: 00000000000226af R12: ffff88806cf09ad8
R13: ffff88806cf09ac0 R14: 0000000000000004 R15: ffff88806cf09a78
FS:  00007f04a5fbf700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32728000 CR3: 000000003f2c8000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 arch_stack_walk+0x87/0xf0
 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:_raw_spin_unlock_irqrestore+0x34/0x50
Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 46 6d a9 fc 48 89 ef e8 4e e0 a9 fc 80 e7 02 74 06 e8 b4 35 d3 fc fb 65 ff 0d 54 dc 7c 7b <74> 07 5b 5d e9 a3 1e 00 00 0f 1f 44 00 00 5b 5d e9 97 1e 00 00 0f
RSP: 0018:ffff88801675f578 EFLAGS: 00000246
RAX: 0000000000222b01 RBX: 0000000000000256 RCX: 1ffffffff0fdfee8
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8486ca6c
RBP: ffff888008c4e900 R08: 0000000000000001 R09: fffffbfff0fdddf1
R10: ffffffff87eeef8f R11: 0000000000000000 R12: ffffea0000ece200
R13: ffff888008c4e900 R14: ffff88803b3885c8 R15: ffff888008c4f780
 __slab_free+0x2a4/0x310
 qlist_free_all+0x50/0x160
 kasan_quarantine_reduce+0x19f/0x240
 __kasan_slab_alloc+0x49/0x70
 kmem_cache_alloc_noprof+0x13d/0x3d0
 ptlock_alloc+0x21/0x70
 pte_alloc_one+0x78/0x340
 __pte_alloc+0x6d/0x350
 copy_page_range+0x2881/0x4cf0
 copy_process+0x7ddb/0x8e90
 kernel_clone+0xeb/0x850
 __do_sys_fork+0x80/0xc0
 do_syscall_64+0xbf/0x1d0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f04a8a49b19
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:00007f04a5fbf188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039
RAX: ffffffffffffffda RBX: 00007f04a8b5cf60 RCX: 00007f04a8a49b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f04a8aa3f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd82f3092f R14: 00007f04a5fbf300 R15: 0000000000022000
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	ff 4c 89 ff          	decl   -0x1(%rcx,%rcx,4)
   4:	4c 89 0c 24          	mov    %r9,(%rsp)
   8:	c6 05 27 51 68 06 01 	movb   $0x1,0x6685127(%rip)        # 0x6685136
   f:	e8 32 e8 ff ff       	callq  0xffffe846
  14:	4c 8b 0c 24          	mov    (%rsp),%r9
  18:	e9 cf f1 ff ff       	jmpq   0xfffff1ec
  1d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  24:	fc ff df
* 27:	49 8d 7f 50          	lea    0x50(%r15),%rdi <-- trapping instruction
  2b:	48 89 fa             	mov    %rdi,%rdx
  2e:	48 c1 ea 03          	shr    $0x3,%rdx
  32:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  36:	0f 85 83 0c 00 00    	jne    0xcbf
  3c:	48                   	rex.W