------------[ cut here ]------------
WARNING: CPU: 0 PID: 4111 at net/ipv4/route.c:1281 kfree_skb include/linux/skbuff.h:1118 [inline]
WARNING: CPU: 0 PID: 4111 at net/ipv4/route.c:1281 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1280
Modules linked in:
CPU: 0 PID: 4111 Comm: kworker/u4:6 Not tainted 5.15.181-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Workqueue: netns cleanup_net
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ip_rt_bug+0x30/0xf8 include/linux/skbuff.h:1118
lr : kfree_skb include/linux/skbuff.h:1118 [inline]
lr : ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1280
sp : ffff800008007530
x29: ffff800008007530 x28: 1fffe00018a91943 x27: ffff8000080077e0
x26: dfff800000000000 x25: 1fffe0001a47914b x24: dfff800000000000
x23: ffff0000d9fcb900 x22: ffff0000d9fcb930 x21: ffff0000c548c780
x20: ffff0000d23c8a00 x19: ffff0000d23c8a00 x18: 0000000000000301
x17: 0000000000000000 x16: ffff8000111a3970 x15: ffff80000837dca4
x14: ffff80000837e098 x13: ffff80000f73061c x12: 0000000000ff0100
x11: 0000000000000302 x10: 0000000000000003 x9 : 29a4455b277b2b00
x8 : 29a4455b277b2b00 x7 : 0000000000000000 x6 : ffff80000837ba18
x5 : ffff0000ecd4a510 x4 : 0000000000000000 x3 : ffff800012cd9f80
x2 : 0000000000000002 x1 : ffff8000117a9520 x0 : 0000000000000001
Call trace:
 kfree_skb include/linux/skbuff.h:1118 [inline]
 ip_rt_bug+0x30/0xf8 net/ipv4/route.c:1280
 dst_output include/net/dst.h:452 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb+0x134/0x2b0 net/ipv4/ip_output.c:1581
 ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1601
 icmp_push_reply+0x398/0x490 net/ipv4/icmp.c:396
 __icmp_send+0xa00/0xd48 net/ipv4/icmp.c:777
 ipv4_send_dest_unreach net/ipv4/route.c:1261 [inline]
 ipv4_link_failure+0x534/0x884 net/ipv4/route.c:1268
 dst_link_failure include/net/dst.h:422 [inline]
 arp_error_report+0x11c/0x16c net/ipv4/arp.c:295
 neigh_invalidate+0x29c/0x4ac net/core/neighbour.c:1001
 neigh_timer_handler+0x704/0xdbc net/core/neighbour.c:1088
 call_timer_fn+0x19c/0x858 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x46c/0x6c4 kernel/time/timer.c:1767
 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1780
 handle_softirqs+0x344/0xbf0 kernel/softirq.c:558
 __do_softirq kernel/softirq.c:592 [inline]
 do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
 invoke_softirq kernel/softirq.c:439 [inline]
 __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641
 irq_exit+0x14/0x88 kernel/softirq.c:665
 handle_domain_irq+0x14c/0x1fc kernel/irq/irqdesc.c:711
 gic_handle_irq+0x78/0x1c8 drivers/irqchip/irq-gic-v3.c:765
 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:899
 do_interrupt_handler+0x6c/0x88 arch/arm64/kernel/entry-common.c:267
 el1_interrupt+0x30/0x58 arch/arm64/kernel/entry-common.c:454
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:470
 el1h_64_irq+0x78/0x7c arch/arm64/kernel/entry.S:522
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline]
 lock_release+0x4a0/0x8e8 kernel/locking/lockdep.c:5646
 rcu_lock_release+0x2c/0x50 include/linux/rcupdate.h:317
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 inet_twsk_purge+0x710/0x7ac net/ipv4/inet_timewait_sock.c:309
 dccp_v6_exit_batch+0x20/0x2c net/dccp/ipv6.c:1123
 ops_exit_list net/core/net_namespace.c:177 [inline]
 cleanup_net+0x644/0xa98 net/core/net_namespace.c:635
 process_one_work+0x79c/0x1140 kernel/workqueue.c:2310
 worker_thread+0x8f4/0x101c kernel/workqueue.c:2457
 kthread+0x374/0x454 kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
irq event stamp: 1732501
hardirqs last  enabled at (1732500): [<ffff80000884d04c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231
hardirqs last disabled at (1732501): [<ffff80001119f244>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (1732396): [<ffff80000819d0d8>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (1732396): [<ffff80000819d0d8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:586
softirqs last disabled at (1732411): [<ffff80000819d6dc>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (1732411): [<ffff80000819d6dc>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (1732411): [<ffff80000819d6dc>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (1732411): [<ffff80000819d6dc>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641
---[ end trace 2283e5ec4e3b70bc ]---