------------[ cut here ]------------ WARNING: CPU: 0 PID: 7199 at net/ipv4/route.c:1254 ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1254 Modules linked in: CPU: 0 UID: 0 PID: 7199 Comm: syz.0.483 Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1254 Code: 1e fa 41 57 41 56 41 55 41 54 53 48 89 d3 e8 7b 5b 6e f7 66 90 e8 74 5b 6e f7 31 ff 48 89 de ba 02 00 00 00 e8 05 3f 6a ff 90 <0f> 0b 90 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc f3 0f 1e RSP: 0018:ffffc90000006540 EFLAGS: 00010282 RAX: cc9997d9e9303300 RBX: ffff8880298553c0 RCX: ffffffff8171048a RDX: dffffc0000000000 RSI: ffffffff8c0ad300 RDI: ffffffff8c6131e0 RBP: 0000000000000001 R08: ffffffff9430c92f R09: ffffffff8a26a77b R10: dffffc0000000000 R11: fffffbfff2861926 R12: dffffc0000000000 R13: ffffc900000067b8 R14: ffff88807fdfbc80 R15: ffff8881452e9b00 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c3492e8 CR3: 00000000334ec000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip_local_out net/ipv4/ip_output.c:130 [inline] ip_send_skb net/ipv4/ip_output.c:1505 [inline] ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1525 __icmp_send+0x1013/0x15c0 net/ipv4/icmp.c:779 ipv4_send_dest_unreach net/ipv4/route.c:1234 [inline] ipv4_link_failure+0x62f/0xa10 net/ipv4/route.c:1241 dst_link_failure include/net/dst.h:429 [inline] vti_xmit net/ipv4/ip_vti.c:271 [inline] vti_tunnel_xmit+0xf42/0x1a60 net/ipv4/ip_vti.c:307 __netdev_start_xmit include/linux/netdevice.h:5002 [inline] netdev_start_xmit include/linux/netdevice.h:5011 [inline] xmit_one net/core/dev.c:3590 [inline] dev_hard_start_xmit+0x27a/0x7e0 net/core/dev.c:3606 __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4434 neigh_output include/net/neighbour.h:539 [inline] ip_finish_output2+0xe70/0x1390 net/ipv4/ip_output.c:236 iptunnel_xmit+0x55d/0x9b0 net/ipv4/ip_tunnel_core.c:82 udp_tunnel_xmit_skb+0x262/0x3b0 net/ipv4/udp_tunnel_core.c:173 geneve_xmit_skb drivers/net/geneve.c:916 [inline] geneve_xmit+0x18b2/0x2d90 drivers/net/geneve.c:1039 __netdev_start_xmit include/linux/netdevice.h:5002 [inline] netdev_start_xmit include/linux/netdevice.h:5011 [inline] xmit_one net/core/dev.c:3590 [inline] dev_hard_start_xmit+0x27a/0x7e0 net/core/dev.c:3606 __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4434 dev_queue_xmit include/linux/netdevice.h:3168 [inline] neigh_hh_output include/net/neighbour.h:523 [inline] neigh_output include/net/neighbour.h:537 [inline] ip6_finish_output2+0x1284/0x17b0 net/ipv6/ip6_output.c:141 ip6_finish_output+0x41e/0x840 net/ipv6/ip6_output.c:226 NF_HOOK include/linux/netfilter.h:314 [inline] ndisc_send_skb+0xb30/0x1450 net/ipv6/ndisc.c:511 addrconf_rs_timer+0x371/0x670 net/ipv6/addrconf.c:4042 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1844 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655 irq_exit_rcu+0x9/0x30 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:vm_normal_page+0x5/0x200 mm/memory.c:595 Code: ff ff e8 7e b6 eb 09 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 <41> 57 41 56 41 55 41 54 53 49 89 d4 49 89 f6 49 89 ff e8 c4 a7 b1 RSP: 0018:ffffc900107e7570 EFLAGS: 00000246 RAX: 1ffff920020fcf58 RBX: ffffc900107e7ac0 RCX: ffff88802b84da00 RDX: 000000007eafa025 RSI: 00007ff147d86000 RDI: ffff88807cca0000 RBP: ffffc900107e7890 R08: ffffffff81e385c6 R09: 1ffffd40003f57ce R10: dffffc0000000000 R11: fffff940003f57cf R12: dffffc0000000000 R13: 1ffff110068a7186 R14: ffff88807dbc4e00 R15: 000000007eafa025 zap_present_ptes mm/memory.c:1549 [inline] zap_pte_range mm/memory.c:1621 [inline] zap_pmd_range mm/memory.c:1739 [inline] zap_pud_range mm/memory.c:1768 [inline] zap_p4d_range mm/memory.c:1789 [inline] unmap_page_range+0xac6/0x40e0 mm/memory.c:1810 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1900 exit_mmap+0x275/0xc40 mm/mmap.c:1923 __mmput+0x115/0x390 kernel/fork.c:1348 exit_mm+0x220/0x310 kernel/exit.c:570 do_exit+0x9b2/0x28e0 kernel/exit.c:925 do_group_exit+0x207/0x2c0 kernel/exit.c:1087 __do_sys_exit_group kernel/exit.c:1098 [inline] __se_sys_exit_group kernel/exit.c:1096 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1096 x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff147d7e819 Code: Unable to access opcode bytes at 0x7ff147d7e7ef. RSP: 002b:00007fff53e92c28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff147d7e819 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fff53e92c7c R08: 00007fff53e92d0f R09: 0000000000017faf R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000032 R13: 0000000000017faf R14: 0000000000017f49 R15: 00007fff53e92cd0 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: e8 7e b6 eb 09 call 0x9ebb683 5: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) c: 00 00 00 f: 0f 1f 40 00 nopl 0x0(%rax) 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 66 0f 1f 00 nopw (%rax) 27: 55 push %rbp * 28: 41 57 push %r15 <-- trapping instruction 2a: 41 56 push %r14 2c: 41 55 push %r13 2e: 41 54 push %r12 30: 53 push %rbx 31: 49 89 d4 mov %rdx,%r12 34: 49 89 f6 mov %rsi,%r14 37: 49 89 ff mov %rdi,%r15 3a: e8 .byte 0xe8 3b: c4 .byte 0xc4 3c: a7 cmpsl %es:(%rdi),%ds:(%rsi) 3d: b1 .byte 0xb1