netlink: 'syz-executor.5': attribute type 1 has an invalid length.
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 UID: 0 PID: 4016 Comm: (fstrim) Tainted: G        W           6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:dst_dev_put+0x21/0x250
Code: 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 54 55 53 48 89 fb e8 f0 9a a8 fd 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 b5 01 00 00 48 8d 7b 3a 48 8b 2b 48 b8 00 00 00
RSP: 0018:ffff88806cf08d78 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: 000000000000000b RCX: ffffffff841076c7
RDX: 0000000000000001 RSI: ffffffff83cb5bc0 RDI: 000000000000000b
RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff0c8768a
R10: 0000000000000000 R11: 0000000000000001 R12: fffffbfff0b0a4ac
R13: 0000607f1a631458 R14: 0000607f1a631458 R15: 0000000000000000
FS:  00007fe1ddb82900(0000) GS:ffff8880e56d8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f80f54b4abc CR3: 000000001d9d0000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 rt_fibinfo_free_cpus.part.0+0xdb/0x1a0
 fib_nh_common_release+0xa8/0x2c0
 free_fib_info_rcu+0x1cd/0x430
 rcu_core+0x7c8/0x1800
 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:lock_release+0x24/0x290
Code: 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 41 55 41 54 49 89 f4 55 48 89 fd 48 83 ec 18 65 48 8b 05 29 a7 32 06 48 89 44 24 10 <31> c0 e9 47 01 00 00 65 8b 05 42 a7 32 06 89 c0 48 0f a3 05 54 db
RSP: 0018:ffff888021c475c8 EFLAGS: 00000292
RAX: 5ee8b395cbe6d700 RBX: ffff888021c479e8 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff81358702 RDI: ffffffff85c1c760
RBP: ffffffff85c1c760 R08: 0000000000000001 R09: ffff888021c476c0
R10: 000000000003bea3 R11: 0000000000024c9c R12: ffffffff81358702
R13: ffff888021c476c8 R14: ffff888021c479d8 R15: ffff888021c47680
 unwind_next_frame+0x3b7/0x2540
 arch_stack_walk+0x86/0xf0
 stack_trace_save+0x8e/0xc0
 kasan_save_stack+0x24/0x50
 kasan_record_aux_stack+0x89/0xa0
 __call_rcu_common.constprop.0+0x70/0x960
 kmem_cache_free+0x33a/0x540
 skb_release_data+0x88d/0xa40
 consume_skb+0xd0/0x160
 netlink_unicast+0x5af/0x870
 netlink_sendmsg+0x8ac/0xd80
 __sys_sendto+0x506/0x570
 __x64_sys_sendto+0xe1/0x1c0
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe1de3603bc
Code: ea 59 f8 ff 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 10 5a f8 ff 48 8b
RSP: 002b:00007ffccdbb2330 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007ffccdbb23ec RCX: 00007fe1de3603bc
RDX: 0000000000000020 RSI: 0000560d7fe43170 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffccdbb2370 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000293 R12: 0000560d7fe7c9e0
R13: 0000000000000fb0 R14: 0000560d7fde1450 R15: 0000560d7e1c84ee
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dst_dev_put+0x21/0x250
Code: 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 54 55 53 48 89 fb e8 f0 9a a8 fd 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 b5 01 00 00 48 8d 7b 3a 48 8b 2b 48 b8 00 00 00
RSP: 0018:ffff88806cf08d78 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: 000000000000000b RCX: ffffffff841076c7
RDX: 0000000000000001 RSI: ffffffff83cb5bc0 RDI: 000000000000000b
RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff0c8768a
R10: 0000000000000000 R11: 0000000000000001 R12: fffffbfff0b0a4ac
R13: 0000607f1a631458 R14: 0000607f1a631458 R15: 0000000000000000
FS:  00007fe1ddb82900(0000) GS:ffff8880e56d8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f80f54b4abc CR3: 000000001d9d0000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	f3 0f 1e fa          	endbr64
   d:	41 54                	push   %r12
   f:	55                   	push   %rbp
  10:	53                   	push   %rbx
  11:	48 89 fb             	mov    %rdi,%rbx
  14:	e8 f0 9a a8 fd       	callq  0xfda89b09
  19:	48 89 da             	mov    %rbx,%rdx
  1c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  23:	fc ff df
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 b5 01 00 00    	jne    0x1e9
  34:	48 8d 7b 3a          	lea    0x3a(%rbx),%rdi
  38:	48 8b 2b             	mov    (%rbx),%rbp
  3b:	48                   	rex.W
  3c:	b8                   	.byte 0xb8
  3d:	00 00                	add    %al,(%rax)