------------[ cut here ]------------
WARNING: CPU: 0 PID: 10890 at net/ipv4/route.c:1253 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 10890 at net/ipv4/route.c:1253 ip_rt_bug+0x25/0xf0 net/ipv4/route.c:1252
Modules linked in:
CPU: 0 PID: 10890 Comm: syz-executor Not tainted 6.1.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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 ff 81 60 f8 66 90 e8 f8 81 60 f8 48 89 df be 01 00 00 00 e8 4b 1e 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:ffffc90000007638 EFLAGS: 00010296
RAX: 8ed402976553ce01 RBX: ffff88805b96cc80 RCX: ffffffff816b127a
RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: ffffffff8b5e6980
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffffbfff224a05f
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88805b96cc80
R13: ffff88805b96ccd8 R14: ffff88805b8c0000 R15: ffff888020ef0d00
FS:  0000555570c24500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd633e1e58 CR3: 0000000068d16000 CR4: 00000000003506f0
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:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:661
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673
 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:trace_lock_release include/trace/events/lock.h:69 [inline]
RIP: 0010:lock_release+0xcf/0xa20 kernel/locking/lockdep.c:5673
Code: 0d 0f 86 c2 05 00 00 89 db 48 89 d8 48 c1 e8 06 48 8d 3c c5 a8 29 9b 8e be 08 00 00 00 e8 b9 68 77 00 48 0f a3 1d 39 61 30 0d <73> 0d e8 fa be 08 00 84 c0 0f 84 c5 05 00 00 48 c7 c0 74 5e 9b 8e
RSP: 0018:ffffc90004fdf300 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816ac867
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e9b29a8
RBP: ffffc90004fdf430 R08: dffffc0000000000 R09: fffffbfff1d36536
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920009fbe6c
R13: ffffffff81ed0ce6 R14: ffffffff81ed0ce6 R15: dffffc0000000000
 rcu_lock_release include/linux/rcupdate.h:355 [inline]
 rcu_read_unlock_sched include/linux/rcupdate.h:904 [inline]
 pfn_valid+0x3eb/0x440 include/linux/mmzone.h:1867
 page_table_check_set+0x25/0x6d0 mm/page_table_check.c:108
 page_table_check_pte_set include/linux/page_table_check.h:83 [inline]
 set_pte_at arch/x86/include/asm/pgtable.h:1009 [inline]
 copy_present_pte mm/memory.c:1000 [inline]
 copy_pte_range mm/memory.c:1091 [inline]
 copy_pmd_range mm/memory.c:1177 [inline]
 copy_pud_range mm/memory.c:1214 [inline]
 copy_p4d_range mm/memory.c:1238 [inline]
 copy_page_range+0x2d50/0x4660 mm/memory.c:1336
 dup_mmap kernel/fork.c:697 [inline]
 dup_mm kernel/fork.c:1541 [inline]
 copy_mm+0xf42/0x1990 kernel/fork.c:1590
 copy_process+0x19d5/0x4060 kernel/fork.c:2266
 kernel_clone+0x222/0x920 kernel/fork.c:2681
 __do_sys_clone kernel/fork.c:2822 [inline]
 __se_sys_clone kernel/fork.c:2806 [inline]
 __x64_sys_clone+0x231/0x280 kernel/fork.c:2806
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f005c383653
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffdf76c2cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f005c383653
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 0000555570c247d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 000000000004730d R15: 00007ffdf76c2e50
 </TASK>
----------------
Code disassembly (best guess):
   0:	0d 0f 86 c2 05       	or     $0x5c2860f,%eax
   5:	00 00                	add    %al,(%rax)
   7:	89 db                	mov    %ebx,%ebx
   9:	48 89 d8             	mov    %rbx,%rax
   c:	48 c1 e8 06          	shr    $0x6,%rax
  10:	48 8d 3c c5 a8 29 9b 	lea    -0x7164d658(,%rax,8),%rdi
  17:	8e
  18:	be 08 00 00 00       	mov    $0x8,%esi
  1d:	e8 b9 68 77 00       	call   0x7768db
  22:	48 0f a3 1d 39 61 30 	bt     %rbx,0xd306139(%rip)        # 0xd306163
  29:	0d
* 2a:	73 0d                	jae    0x39 <-- trapping instruction
  2c:	e8 fa be 08 00       	call   0x8bf2b
  31:	84 c0                	test   %al,%al
  33:	0f 84 c5 05 00 00    	je     0x5fe
  39:	48 c7 c0 74 5e 9b 8e 	mov    $0xffffffff8e9b5e74,%rax