Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:dst_dev_put+0x27/0x2b0 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 40 be 93 f8 49 89 dd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 48 89 df e8 39 a2 f9 f8 4c 8b 33 48 8d 7b
RSP: 0018:ffffc900001d77a8 EFLAGS: 00010246
RAX: ffffffff892d8c20 RBX: 0000000000000001 RCX: ffff88801ceddb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 1ffffffff1b31898 R08: ffff888076012613 R09: 1ffff1100ec024c2
R10: dffffc0000000000 R11: ffffed100ec024c3 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000607ed9ba7ca0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8881261b1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7925bb580 CR3: 0000000031908000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:195 [inline]
 fib_nh_common_release+0x1ed/0x420 net/ipv4/fib_semantics.c:206
 fib_nh_release net/ipv4/fib_semantics.c:218 [inline]
 free_fib_info_rcu+0xdf/0x310 net/ipv4/fib_semantics.c:230
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xd70/0x1870 kernel/rcu/tree.c:2857
 handle_softirqs+0x27d/0x850 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 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+0x27/0x2b0 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 40 be 93 f8 49 89 dd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 48 89 df e8 39 a2 f9 f8 4c 8b 33 48 8d 7b
RSP: 0018:ffffc900001d77a8 EFLAGS: 00010246
RAX: ffffffff892d8c20 RBX: 0000000000000001 RCX: ffff88801ceddb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 1ffffffff1b31898 R08: ffff888076012613 R09: 1ffff1100ec024c2
R10: dffffc0000000000 R11: ffffed100ec024c3 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000607ed9ba7ca0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8881261b1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7925bb580 CR3: 0000000031908000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
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 40 be 93 f8       	call   0xf893be63
  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 39 a2 f9 f8       	call   0xf8f9a273
  3a:	4c 8b 33             	mov    (%rbx),%r14
  3d:	48                   	rex.W
  3e:	8d                   	.byte 0x8d
  3f:	7b                   	.byte 0x7b