------------[ cut here ]------------
WARNING: CPU: 1 PID: 5024 at net/ipv4/route.c:1259 kfree_skb include/linux/skbuff.h:1236 [inline]
WARNING: CPU: 1 PID: 5024 at net/ipv4/route.c:1259 ip_rt_bug+0x28/0x120 net/ipv4/route.c:1258
Modules linked in:
CPU: 1 PID: 5024 Comm: syz-executor.1 Not tainted 6.3.0-rc7-syzkaller-02376-g28b17f6270f1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:ip_rt_bug+0x28/0x120 net/ipv4/route.c:1259
Code: 00 00 f3 0f 1e fa 41 54 55 48 89 d5 53 48 83 ec 08 e8 5c ad 00 f9 66 90 e8 55 ad 00 f9 be 02 00 00 00 48 89 ef e8 d8 6c 7f ff <0f> 0b 48 83 c4 08 31 c0 5b 5d 41 5c c3 e8 36 ad 00 f9 48 8d 7d 10
RSP: 0018:ffffc900001e0890 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888027098000 RCX: 0000000000000100
RDX: ffff88802be13a80 RSI: ffffffff88824598 RDI: 0000000000000000
RBP: ffff888029200500 R08: 0000000000000000 R09: ffffffff914f7c17
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888048a77400
R13: ffff888029200500 R14: 0000000000000000 R15: ffff888029200558
FS:  0000555556eba400(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2cc21000 CR3: 000000004e647000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 dst_output include/net/dst.h:458 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb net/ipv4/ip_output.c:1587 [inline]
 ip_push_pending_frames+0x129/0x2b0 net/ipv4/ip_output.c:1607
 icmp_push_reply+0x320/0x450 net/ipv4/icmp.c:389
 __icmp_send+0xba6/0x1450 net/ipv4/icmp.c:770
 ipv4_send_dest_unreach net/ipv4/route.c:1239 [inline]
 ipv4_link_failure+0x5a9/0x9e0 net/ipv4/route.c:1246
 dst_link_failure include/net/dst.h:437 [inline]
 arp_error_report+0xcb/0x1c0 net/ipv4/arp.c:296
 neigh_invalidate+0x20d/0x560 net/core/neighbour.c:1048
 neigh_timer_handler+0xc39/0x1010 net/core/neighbour.c:1135
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
 __do_softirq+0x1d4/0x905 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1107
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__ext4_find_entry+0x2/0x1050 fs/ext4/namei.c:1575
Code: ff ff e8 11 fe a3 ff e9 05 fe ff ff 48 8b 7c 24 28 e8 02 fe a3 ff e9 29 fb ff ff e8 58 01 d7 07 0f 1f 84 00 00 00 00 00 41 57 <49> 89 f7 41 56 41 55 41 54 55 48 89 cd 53 48 bb 00 00 00 00 00 fc
RSP: 0018:ffffc9000491fc20 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff92000923f8e RCX: 0000000000000000
RDX: ffffc9000491fca0 RSI: ffffc9000491fcc0 RDI: ffff888044402ad0
RBP: ffffc9000491fd80 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880740fbee0 R14: ffff888044402ad0 R15: ffff888046024058
 ext4_find_entry fs/ext4/namei.c:1730 [inline]
 __ext4_unlink+0x721/0xcd0 fs/ext4/namei.c:3220
 ext4_unlink+0x41f/0x590 fs/ext4/namei.c:3298
 vfs_unlink+0x355/0x930 fs/namei.c:4250
 do_unlinkat+0x3df/0x670 fs/namei.c:4316
 __do_sys_unlink fs/namei.c:4364 [inline]
 __se_sys_unlink fs/namei.c:4362 [inline]
 __x64_sys_unlink+0xca/0x110 fs/namei.c:4362
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa5dc88bad7
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc4f3709f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa5dc88bad7
RDX: 00007ffc4f370a30 RSI: 00007ffc4f370a30 RDI: 00007ffc4f370ac0
RBP: 00007ffc4f370ac0 R08: 0000000000000001 R09: 00007ffc4f370890
R10: 0000555556ebb853 R11: 0000000000000206 R12: 00007fa5dc8e6cdc
R13: 00007ffc4f371b80 R14: 0000555556ebb810 R15: 00007ffc4f371bc0
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	e8 11 fe a3 ff       	callq  0xffa3fe16
   5:	e9 05 fe ff ff       	jmpq   0xfffffe0f
   a:	48 8b 7c 24 28       	mov    0x28(%rsp),%rdi
   f:	e8 02 fe a3 ff       	callq  0xffa3fe16
  14:	e9 29 fb ff ff       	jmpq   0xfffffb42
  19:	e8 58 01 d7 07       	callq  0x7d70176
  1e:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  25:	00
  26:	41 57                	push   %r15
* 28:	49 89 f7             	mov    %rsi,%r15 <-- trapping instruction
  2b:	41 56                	push   %r14
  2d:	41 55                	push   %r13
  2f:	41 54                	push   %r12
  31:	55                   	push   %rbp
  32:	48 89 cd             	mov    %rcx,%rbp
  35:	53                   	push   %rbx
  36:	48                   	rex.W
  37:	bb 00 00 00 00       	mov    $0x0,%ebx
  3c:	00 fc                	add    %bh,%ah