general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 5.15.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dst_dev_put+0x1f/0x2b0 net/core/dst.c:154
Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 41 55 41 54 55 53 48 89 fb e8 52 ab 54 fa 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 29 02 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00
RSP: 0018:ffffc90000d27c60 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 0000000000000100
RDX: 0000000000000000 RSI: ffffffff872162ae RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff88802b2005ab
R10: ffffffff87b48c50 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000607f4604be60 R14: ffffffff8d6e52e4 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560c3f6ac610 CR3: 000000004c142000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 rt_fibinfo_free_cpus.part.0+0xf5/0x180 net/ipv4/fib_semantics.c:202
 rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:194 [inline]
 fib_nh_common_release+0x10c/0x330 net/ipv4/fib_semantics.c:213
 fib6_info_destroy_rcu+0x187/0x210 net/ipv6/ip6_fib.c:175
 rcu_do_batch kernel/rcu/tree.c:2508 [inline]
 rcu_core+0x7ab/0x1470 kernel/rcu/tree.c:2743
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 run_ksoftirqd kernel/softirq.c:920 [inline]
 run_ksoftirqd+0x2d/0x60 kernel/softirq.c:912
 smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
---[ end trace 48da27174a2f5bf3 ]---
RIP: 0010:dst_dev_put+0x1f/0x2b0 net/core/dst.c:154
Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 41 55 41 54 55 53 48 89 fb e8 52 ab 54 fa 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 29 02 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00
RSP: 0018:ffffc90000d27c60 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 0000000000000100
RDX: 0000000000000000 RSI: ffffffff872162ae RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff88802b2005ab
R10: ffffffff87b48c50 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000607f4604be60 R14: ffffffff8d6e52e4 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560c3f6ac610 CR3: 000000004c142000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00
   8:	0f 1f 00             	nopl   (%rax)
   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 52 ab 54 fa       	callq  0xfa54ab6b
  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 29 02 00 00    	jne    0x25d
  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)