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: 0 UID: 0 PID: 185 Comm: kworker/u8:5 Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: bat_events batadv_nc_worker
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 8c f0 85 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:ffffc90000007d40 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: 0000000000000003 RCX: ffffffff89d4e4b9
RDX: 0000000000000000 RSI: ffffffff8933bd74 RDI: 0000000000000003
RBP: 0000607f47681658 R08: 0000000000000005 R09: 0000000000000007
R10: 0000000000000001 R11: 0000000000000004 R12: fffffbfff1b55491
R13: dffffc0000000000 R14: 0000607f47681658 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f49d99f5f98 CR3: 00000000466f8000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 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
 __do_softirq kernel/softirq.c:595 [inline]
 invoke_softirq kernel/softirq.c:435 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:116 [inline]
RIP: 0010:lock_release+0xd3/0x6f0 kernel/locking/lockdep.c:5864
Code: 48 0f a3 2d ef 9c cb 0e 0f 82 26 04 00 00 48 c7 c5 14 6a 62 90 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 0f b6 14 02 <48> 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 fb 04 00 00 8b
RSP: 0018:ffffc90002f47a60 EFLAGS: 00000217
RAX: dffffc0000000000 RBX: 1ffff920005e8f4e RCX: ffffffff81969a19
RDX: 0000000000000000 RSI: ffffffff8bd32ca0 RDI: ffffffff8daa9ce0
RBP: ffffffff90626a14 R08: 0000000000000000 R09: fffffbfff20c46e2
R10: ffffffff90623717 R11: 0000000000000002 R12: ffffffff8e1bcbc0
R13: 0000000000000001 R14: 0000000000000000 R15: dffffc0000000000
 rcu_lock_release include/linux/rcupdate.h:347 [inline]
 rcu_read_unlock include/linux/rcupdate.h:880 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
 batadv_nc_worker+0x88c/0x1060 net/batman-adv/network-coding.c:719
 process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 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:
vkms_vblank_simulate: vblank timer overrun
---[ 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 8c f0 85 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:ffffc90000007d40 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: 0000000000000003 RCX: ffffffff89d4e4b9
RDX: 0000000000000000 RSI: ffffffff8933bd74 RDI: 0000000000000003
RBP: 0000607f47681658 R08: 0000000000000005 R09: 0000000000000007
R10: 0000000000000001 R11: 0000000000000004 R12: fffffbfff1b55491
R13: dffffc0000000000 R14: 0000607f47681658 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f49d99f5f98 CR3: 00000000466f8000 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 8c f0 85 f8       	call   0xf885f0a5
  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)