------------[ cut here ]------------ WARNING: CPU: 0 PID: 21115 at net/ipv4/route.c:1238 ip_rt_bug+0x25/0x130 net/ipv4/route.c:1237 Modules linked in: CPU: 0 PID: 21115 Comm: syz-executor.0 Not tainted 5.13.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rt_bug+0x25/0x130 net/ipv4/route.c:1238 Code: 0f 1f 44 00 00 55 48 89 d5 53 48 83 ec 08 e8 a2 7d ef f9 0f 1f 44 00 00 e8 98 7d ef f9 e8 93 7d ef f9 48 89 ef e8 5b 9b 80 ff <0f> 0b 48 83 c4 08 31 c0 5b 5d c3 e8 7b 7d ef f9 48 8d 7d 10 48 b8 RSP: 0018:ffffc900000078a8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888062e2cd40 RCX: 0000000000000100 RDX: ffff888074e29c40 RSI: ffffffff87855e65 RDI: 0000000000000000 RBP: ffff88803046ba00 R08: 0000000000000001 R09: ffffffff90228937 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88801d7b1f00 R13: ffff88803046ba00 R14: 0000000000000000 R15: ffff88803046ba58 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00bc80000 CR3: 0000000056b31000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dst_output include/net/dst.h:448 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] ip_send_skb net/ipv4/ip_output.c:1568 [inline] ip_push_pending_frames+0x125/0x2b0 net/ipv4/ip_output.c:1588 icmp_push_reply+0x351/0x4a0 net/ipv4/icmp.c:393 __icmp_send+0xb99/0x13c0 net/ipv4/icmp.c:769 ipv4_send_dest_unreach net/ipv4/route.c:1218 [inline] ipv4_link_failure+0x5f0/0x9f0 net/ipv4/route.c:1225 dst_link_failure include/net/dst.h:427 [inline] arp_error_report+0xc7/0x1c0 net/ipv4/arp.c:295 neigh_invalidate+0x20d/0x560 net/core/neighbour.c:999 neigh_timer_handler+0xd43/0x10e0 net/core/neighbour.c:1086 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1431 expire_timers kernel/time/timer.c:1476 [inline] __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1745 __run_timers kernel/time/timer.c:1726 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1758 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647 RIP: 0010:lock_acquire+0x1ef/0x740 kernel/locking/lockdep.c:5480 Code: 72 a7 7e 83 f8 01 0f 85 ee 03 00 00 9c 58 f6 c4 02 0f 85 d9 03 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc90003b9f5e8 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff92000773ebf RCX: 000000003dfe94e6 RDX: 1ffff1100e9c54c6 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff902288a7 R10: fffffbfff2045114 R11: 0000000000000000 R12: 0000000000000002 R13: ffffffff8bf79620 R14: 0000000000000000 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:267 [inline] rcu_read_lock include/linux/rcupdate.h:657 [inline] lock_page_memcg+0x66/0x7d0 mm/memcontrol.c:1982 page_remove_rmap+0x25/0x1430 mm/rmap.c:1345 zap_pte_range mm/memory.c:1270 [inline] zap_pmd_range mm/memory.c:1385 [inline] zap_pud_range mm/memory.c:1414 [inline] zap_p4d_range mm/memory.c:1435 [inline] unmap_page_range+0xea6/0x2890 mm/memory.c:1456 unmap_single_vma+0x198/0x300 mm/memory.c:1501 unmap_vmas+0x16d/0x2f0 mm/memory.c:1533 exit_mmap+0x2a8/0x590 mm/mmap.c:3208 __mmput+0x122/0x470 kernel/fork.c:1096 mmput+0x58/0x60 kernel/fork.c:1117 exit_mm kernel/exit.c:502 [inline] do_exit+0xb0a/0x2a60 kernel/exit.c:813 do_group_exit+0x125/0x310 kernel/exit.c:923 get_signal+0x47f/0x2150 kernel/signal.c:2835 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:789 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x180/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 Code: Unable to access opcode bytes at RIP 0x4665af. RSP: 002b:00007f8b54648218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 000000000056bf88 RCX: 00000000004665d9 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000056bf8c RBP: 000000000056bf80 R08: 000000000000000e R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 000000000056bf8c R13: 00007fff938d20af R14: 00007f8b54648300 R15: 0000000000022000