Oops: general protection fault, probably for non-canonical address 0xdffffc0000000012: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000090-0x0000000000000097]
CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 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:dst_dev_put+0x27/0x2d0 net/core/dst.c:146
Code: 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 89 fb 49 bc 00 00 00 00 00 fc ff df e8 e0 4d 78 f8 49 89 dd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 48 89 df e8 59 19 df f8 4c 8b 33 48 8d 7b
RSP: 0018:ffffc900001d7ad8 EFLAGS: 00010207
RAX: ffffffff8948adf0 RBX: 0000000000000094 RCX: ffff88801dacdac0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000094
RBP: 1ffffffff1b9a49a R08: ffff88803a21e623 R09: 1ffff11007443cc4
R10: dffffc0000000000 R11: ffffed1007443cc5 R12: dffffc0000000000
R13: 0000000000000012 R14: 0000607eda2b26c8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888125ac0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f25897a9fb8 CR3: 000000006721c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:195 [inline]
 fib_nh_common_release+0x201/0x430 net/ipv4/fib_semantics.c:206
 fib6_info_destroy_rcu+0xca/0x1c0 net/ipv6/ip6_fib.c:177
 rcu_do_batch kernel/rcu/tree.c:2617 [inline]
 rcu_core+0x7bd/0x1060 kernel/rcu/tree.c:2869
 handle_softirqs+0x22b/0x7c0 kernel/softirq.c:626
 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1067
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x389/0x480 kernel/kthread.c:467
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dst_dev_put+0x27/0x2d0 net/core/dst.c:146
Code: 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 89 fb 49 bc 00 00 00 00 00 fc ff df e8 e0 4d 78 f8 49 89 dd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 48 89 df e8 59 19 df f8 4c 8b 33 48 8d 7b
RSP: 0018:ffffc900001d7ad8 EFLAGS: 00010207
RAX: ffffffff8948adf0 RBX: 0000000000000094 RCX: ffff88801dacdac0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000094
RBP: 1ffffffff1b9a49a R08: ffff88803a21e623 R09: 1ffff11007443cc4
R10: dffffc0000000000 R11: ffffed1007443cc5 R12: dffffc0000000000
R13: 0000000000000012 R14: 0000607eda2b26c8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888125ac0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f25897a9fb8 CR3: 000000006721c000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	f3 0f 1e fa          	endbr64
   7:	55                   	push   %rbp
   8:	41 57                	push   %r15
   a:	41 56                	push   %r14
   c:	41 55                	push   %r13
   e:	41 54                	push   %r12
  10:	53                   	push   %rbx
  11:	48 89 fb             	mov    %rdi,%rbx
  14:	49 bc 00 00 00 00 00 	movabs $0xdffffc0000000000,%r12
  1b:	fc ff df
  1e:	e8 e0 4d 78 f8       	call   0xf8784e03
  23:	49 89 dd             	mov    %rbx,%r13
  26:	49 c1 ed 03          	shr    $0x3,%r13
* 2a:	43 80 7c 25 00 00    	cmpb   $0x0,0x0(%r13,%r12,1) <-- trapping instruction
  30:	74 08                	je     0x3a
  32:	48 89 df             	mov    %rbx,%rdi
  35:	e8 59 19 df f8       	call   0xf8df1993
  3a:	4c 8b 33             	mov    (%rbx),%r14
  3d:	48                   	rex.W
  3e:	8d                   	.byte 0x8d
  3f:	7b                   	.byte 0x7b