------------[ cut here ]------------
WARNING: CPU: 1 PID: 11 at net/ipv4/route.c:1253 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 1 PID: 11 at net/ipv4/route.c:1253 ip_rt_bug+0x25/0xf0 net/ipv4/route.c:1252
Modules linked in:
CPU: 1 PID: 11 Comm: kworker/u4:1 Not tainted 6.1.127-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:ip_rt_bug+0x25/0xf0 net/ipv4/route.c:1253
Code: ff ff 0f 1f 00 41 57 41 56 41 55 41 54 53 48 89 d3 e8 bf 8a 60 f8 66 90 e8 b8 8a 60 f8 48 89 df be 01 00 00 00 e8 4b 21 76 ff <0f> 0b 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 49 bd 00 00 00 00 00 fc
RSP: 0018:ffffc900001e0638 EFLAGS: 00010296
RAX: dbc6cb5c2fa9c501 RBX: ffff88804dcd6780 RCX: ffffffff816b127a
RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: ffffffff8b5e67c0
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffffbfff224a05f
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88804dcd6780
R13: ffff88804dcd67d8 R14: ffff88805be28000 R15: ffff88801e6d1380
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f77330d56c0 CR3: 0000000074b39000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 dst_output include/net/dst.h:444 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb+0x113/0x1a0 net/ipv4/ip_output.c:1599
 __icmp_send+0xf9e/0x15a0 net/ipv4/icmp.c:780
 ipv4_send_dest_unreach net/ipv4/route.c:1233 [inline]
 ipv4_link_failure+0x638/0xa10 net/ipv4/route.c:1240
 dst_link_failure include/net/dst.h:423 [inline]
 arp_error_report+0x112/0x160 net/ipv4/arp.c:296
 neigh_invalidate+0x240/0x460 net/core/neighbour.c:1059
 neigh_timer_handler+0x8a1/0x1010 net/core/neighbour.c:1146
 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1549 [inline]
 __run_timers+0x67c/0x890 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
 __do_softirq kernel/softirq.c:605 [inline]
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:lock_release+0x637/0xa20 kernel/locking/lockdep.c:5686
Code: 3c 3b 00 74 08 4c 89 f7 e8 d6 61 77 00 f6 84 24 91 00 00 00 02 75 6f 41 f7 c5 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 4b c7 44 27 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90000107ac0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000020f6a RCX: ffffc90000107b03
RDX: 0000000000000002 RSI: ffffffff8b0c14c0 RDI: ffffffff8b5e67c0
RBP: ffffc90000107be8 R08: dffffc0000000000 R09: fffffbfff1d364e6
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000020f64
R13: 0000000000000246 R14: ffffc90000107b50 R15: dffffc0000000000
 rcu_lock_release include/linux/rcupdate.h:355 [inline]
 rcu_read_unlock include/linux/rcupdate.h:824 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
 batadv_nc_worker+0x28c/0x610 net/batman-adv/network-coding.c:719
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
----------------
Code disassembly (best guess):
   0:	3c 3b                	cmp    $0x3b,%al
   2:	00 74 08 4c          	add    %dh,0x4c(%rax,%rcx,1)
   6:	89 f7                	mov    %esi,%edi
   8:	e8 d6 61 77 00       	call   0x7761e3
   d:	f6 84 24 91 00 00 00 	testb  $0x2,0x91(%rsp)
  14:	02
  15:	75 6f                	jne    0x86
  17:	41 f7 c5 00 02 00 00 	test   $0x200,%r13d
  1e:	74 01                	je     0x21
  20:	fb                   	sti
  21:	48 c7 44 24 60 0e 36 	movq   $0x45e0360e,0x60(%rsp)
  28:	e0 45
* 2a:	4b c7 04 27 00 00 00 	movq   $0x0,(%r15,%r12,1) <-- trapping instruction
  31:	00
  32:	4b c7 44 27 08 00 00 	movq   $0x0,0x8(%r15,%r12,1)
  39:	00 00
  3b:	65                   	gs
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b
  3e:	04 25                	add    $0x25,%al