Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 25 Comm: ksoftirqd/1 Not tainted 6.14.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:dst_dev_put+0x25/0x330 net/core/dst.c:146
Code: 90 90 90 90 90 f3 0f 1e fa 41 56 41 55 41 54 55 53 48 89 fb e8 bc eb 84 f8 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 d6 02 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00
RSP: 0018:ffffc900001f7b88 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffffffff89d66347
RDX: 0000000000000000 RSI: ffffffff89350604 RDI: 0000000000000002
RBP: 0000607f47644e00 R08: 0000000000000005 R09: 0000000000000007
R10: 0000000000000000 R11: 0000000000000001 R12: fffffbfff1b56291
R13: dffffc0000000000 R14: 0000607f47644e00 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f03481ba000 CR3: 000000006ff78000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 rt_fibinfo_free_cpus.part.0+0xe7/0x1c0 net/ipv4/fib_semantics.c:201
 rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:193 [inline]
 fib_nh_common_release+0x121/0x360 net/ipv4/fib_semantics.c:212
 fib6_info_destroy_rcu+0x199/0x1e0 net/ipv6/ip6_fib.c:177
 rcu_do_batch kernel/rcu/tree.c:2546 [inline]
 rcu_core+0x7a0/0x14d0 kernel/rcu/tree.c:2802
 handle_softirqs+0x216/0x8f0 kernel/softirq.c:561
 run_ksoftirqd kernel/softirq.c:950 [inline]
 run_ksoftirqd+0x3a/0x60 kernel/softirq.c:942
 smpboot_thread_fn+0x664/0xa30 kernel/smpboot.c:164
 kthread+0x3b2/0x750 kernel/kthread.c:464
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dst_dev_put+0x25/0x330 net/core/dst.c:146
Code: 90 90 90 90 90 f3 0f 1e fa 41 56 41 55 41 54 55 53 48 89 fb e8 bc eb 84 f8 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 d6 02 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00
RSP: 0018:ffffc900001f7b88 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffffffff89d66347
RDX: 0000000000000000 RSI: ffffffff89350604 RDI: 0000000000000002
RBP: 0000607f47644e00 R08: 0000000000000005 R09: 0000000000000007
R10: 0000000000000000 R11: 0000000000000001 R12: fffffbfff1b56291
R13: dffffc0000000000 R14: 0000607f47644e00 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f03481ba000 CR3: 000000006ff78000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	f3 0f 1e fa          	endbr64
   9:	41 56                	push   %r14
   b:	41 55                	push   %r13
   d:	41 54                	push   %r12
   f:	55                   	push   %rbp
  10:	53                   	push   %rbx
  11:	48 89 fb             	mov    %rdi,%rbx
  14:	e8 bc eb 84 f8       	call   0xf884ebd5
  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 d6 02 00 00    	jne    0x30a
  34:	48 8d 7b 3a          	lea    0x3a(%rbx),%rdi
  38:	4c 8b 23             	mov    (%rbx),%r12
  3b:	48                   	rex.W
  3c:	b8                   	.byte 0xb8
  3d:	00 00                	add    %al,(%rax)