bisecting fixing commit since dda0e2920330128e0dbdeb11c8f25031aa40b11c building syzkaller on 5ed396e666c7826bed46f06c4db1409376691fed testing commit dda0e2920330128e0dbdeb11c8f25031aa40b11c with gcc (GCC) 8.4.1 20210217 kernel signature: 57915236bb0b53226a1d3d6592d1bf568a83e791ff77021f37d96869731ab8db run #0: crashed: WARNING in ip_rt_bug run #1: crashed: WARNING in ip_rt_bug run #2: crashed: WARNING in ip_rt_bug run #3: crashed: WARNING in ip_rt_bug run #4: crashed: WARNING in ip_rt_bug run #5: crashed: WARNING in ip_rt_bug run #6: crashed: WARNING in ip_rt_bug run #7: crashed: WARNING in ip_rt_bug run #8: crashed: WARNING in ip_rt_bug run #9: crashed: WARNING in ip_rt_bug run #10: crashed: WARNING in ip_rt_bug run #11: crashed: WARNING in ip_rt_bug run #12: crashed: WARNING in ip_rt_bug run #13: crashed: WARNING in ip_rt_bug run #14: crashed: WARNING in ip_rt_bug run #15: crashed: WARNING in ip_rt_bug run #16: crashed: WARNING in ip_rt_bug run #17: crashed: WARNING in corrupted run #18: crashed: WARNING in ip_rt_bug run #19: crashed: WARNING in ip_rt_bug testing current HEAD 78fec1611cbf7b0bdaddfdbf174a3a2463663bff testing commit 78fec1611cbf7b0bdaddfdbf174a3a2463663bff with gcc (GCC) 8.4.1 20210217 kernel signature: 749a100c7205caf5c6b3514c931edf2fb66ef3b87b542b568b7cd97c3eef9079 all runs: crashed: WARNING in ip_rt_bug revisions tested: 2, total time: 23m10.703471863s (build: 16m25.681350724s, test: 5m51.907244908s) the crash still happens on HEAD commit msg: Linux 4.19.183 crash: WARNING in ip_rt_bug IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready syz-executor.0 uses obsolete (PF_INET,SOCK_PACKET) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7209 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 1 PID: 7209 Comm: syz-executor.0 Not tainted 4.19.183-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Code: 48 8b 45 d8 e9 ed fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 d7 48 89 e5 e8 a4 e0 a2 ff 48 c7 c7 a0 f1 c6 87 e8 1a d0 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 RSP: 0018:ffff8881d91c7110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881d8521cc0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87679ba0 RDI: ffffffff8a1869a0 RBP: ffff8881d91c7110 R08: ffffed103ed25079 R09: ffffed103ed25078 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: ffff8881e7b94080 R13: ffff8881e8dab200 R14: ffff8881d8521d18 R15: ffff8881d91c73d4 FS: 00007fb024424700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000050b000 CR3: 00000001d8a1c005 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 ip_rcv_finish+0x104/0x270 net/ipv4/ip_input.c:412 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_rcv+0xcb/0x2e0 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x112/0x1a0 net/core/dev.c:4954 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5066 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1535 tun_get_user+0x273a/0x4aa0 drivers/net/tun.c:1966 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:1999 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb024424198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007fb0244246bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 1483 hardirqs last enabled at (1482): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (1483): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1328): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1328): [] tun_get_user+0x25ad/0x4aa0 drivers/net/tun.c:1913 softirqs last disabled at (1330): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1562 ---[ end trace faf40873f013c606 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7218 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 0 PID: 7218 Comm: syz-executor.0 Tainted: G W 4.19.183-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Code: 48 8b 45 d8 e9 ed fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 d7 48 89 e5 e8 a4 e0 a2 ff 48 c7 c7 a0 f1 c6 87 e8 1a d0 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 RSP: 0018:ffff8881dbadf110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881d4920640 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87679ba0 RDI: ffffffff8a1869a0 RBP: ffff8881dbadf110 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e7b94080 R13: ffff8881e8daac40 R14: ffff8881d4920698 R15: ffff8881dbadf3d4 FS: 00007fb024403700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560cf2170140 CR3: 00000001d8a1c004 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 ip_rcv_finish+0x104/0x270 net/ipv4/ip_input.c:412 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_rcv+0xcb/0x2e0 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x112/0x1a0 net/core/dev.c:4954 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5066 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1535 tun_get_user+0x273a/0x4aa0 drivers/net/tun.c:1966 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:1999 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb024403198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bfa0 R13: 00007fb0244036bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 241 hardirqs last enabled at (240): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (241): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (126): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (126): [] tun_get_user+0x25ad/0x4aa0 drivers/net/tun.c:1913 softirqs last disabled at (128): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1562 ---[ end trace faf40873f013c607 ]--- ------------[ cut here ]------------ ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7225 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 WARNING: CPU: 1 PID: 7222 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: Modules linked in: CPU: 0 PID: 7225 Comm: syz-executor.1 Tainted: G W 4.19.183-syzkaller #0 CPU: 1 PID: 7222 Comm: syz-executor.3 Tainted: G W 4.19.183-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Code: 48 8b 45 d8 e9 ed fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 d7 48 89 e5 e8 a4 e0 a2 ff 48 c7 c7 a0 f1 c6 87 e8 1a d0 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 RSP: 0018:ffff8881d741f110 EFLAGS: 00010282 Code: 48 8b 45 d8 e9 ed fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 d7 48 89 e5 e8 a4 e0 a2 ff 48 c7 c7 a0 f1 c6 87 e8 1a d0 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 RAX: 0000000000000024 RBX: ffff8881d6c4ba80 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87679ba0 RDI: ffffffff8a1869a0 RSP: 0018:ffff8881d670f110 EFLAGS: 00010282 RBP: ffff8881d741f110 R08: ffffed103ed25079 R09: ffffed103ed25078 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: ffff8881e7080100 RAX: 0000000000000024 RBX: ffff8881d6dd82c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87679ba0 RDI: ffffffff8a1869a0 R13: ffff8881e779f840 R14: ffff8881d6c4bad8 R15: ffff8881d741f3d4 FS: 00007f07c8fc7700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 RBP: ffff8881d670f110 R08: ffffed103ed05079 R09: ffffed103ed05078 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e70cc140 R13: ffff8881e75e0d00 R14: ffff8881d6dd8318 R15: ffff8881d670f3d4 CR2: 00007ffd8a4cff08 CR3: 00000001d7b99005 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 FS: 00007f082c947700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd8a4cde00 CR3: 00000001d84a2004 CR4: 00000000001606f0 dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 ip_rcv_finish+0x104/0x270 net/ipv4/ip_input.c:412 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_rcv+0xcb/0x2e0 net/ipv4/ip_input.c:524 ip_rcv_finish+0x104/0x270 net/ipv4/ip_input.c:412 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_rcv+0xcb/0x2e0 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x112/0x1a0 net/core/dev.c:4954 __netif_receive_skb_one_core+0x112/0x1a0 net/core/dev.c:4954 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5066 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5066 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1535 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1535 tun_get_user+0x273a/0x4aa0 drivers/net/tun.c:1966 tun_get_user+0x273a/0x4aa0 drivers/net/tun.c:1966 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:1999 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:1999 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 RSP: 002b:00007f082c947198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 entry_SYSCALL_64_after_hwframe+0x49/0xbe RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RIP: 0033:0x4641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 RSP: 002b:00007f07c8fc7198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 R13: 00007f082c9476bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 1233 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 hardirqs last enabled at (1232): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (1233): [] trace_hardirqs_off_thunk+0x1a/0x1c RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 softirqs last enabled at (1132): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1132): [] tun_get_user+0x25ad/0x4aa0 drivers/net/tun.c:1913 softirqs last disabled at (1134): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1562 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f07c8fc76bc R14: 00000000ffffffff R15: 0000000000000003 ---[ end trace faf40873f013c608 ]--- irq event stamp: 1237 hardirqs last enabled at (1236): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (1237): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1132): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1132): [] tun_get_user+0x25ad/0x4aa0 drivers/net/tun.c:1913 softirqs last disabled at (1134): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1562 ---[ end trace faf40873f013c609 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7301 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 0 PID: 7301 Comm: syz-executor.1 Tainted: G W 4.19.183-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Code: 48 8b 45 d8 e9 ed fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 d7 48 89 e5 e8 a4 e0 a2 ff 48 c7 c7 a0 f1 c6 87 e8 1a d0 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 RSP: 0018:ffff8881cdf5f110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881d7798980 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87679ba0 RDI: ffffffff8a1869a0 RBP: ffff8881cdf5f110 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e70cc140 R13: ffff8881e75e0d00 R14: ffff8881d77989d8 R15: ffff8881cdf5f3d4 FS: 00007f082c947700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560cf2197000 CR3: 00000001d540a005 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 ip_rcv_finish+0x104/0x270 net/ipv4/ip_input.c:412 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_rcv+0xcb/0x2e0 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x112/0x1a0 net/core/dev.c:4954 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5066 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1535 tun_get_user+0x273a/0x4aa0 drivers/net/tun.c:1966 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:1999 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f082c947198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f082c9476bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 331 hardirqs last enabled at (330): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (331): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (202): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (202): [] tun_get_user+0x25ad/0x4aa0 drivers/net/tun.c:1913 softirqs last disabled at (204): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1562 ---[ end trace faf40873f013c60a ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7355 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 1 PID: 7355 Comm: syz-executor.5 Tainted: G W 4.19.183-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Code: 48 8b 45 d8 e9 ed fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 d7 48 89 e5 e8 a4 e0 a2 ff 48 c7 c7 a0 f1 c6 87 e8 1a d0 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 RSP: 0018:ffff8881cd94f110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881f4abd340 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87679ba0 RDI: ffffffff8a1869a0 RBP: ffff8881cd94f110 R08: ffffed103ed25079 R09: ffffed103ed25078 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: ffff8881d0d28180 R13: ffff8881e779e140 R14: ffff8881f4abd398 R15: ffff8881cd94f3d4 FS: 00007efc418e2700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000050bb34 CR3: 00000001d5833006 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 ip_rcv_finish+0x104/0x270 net/ipv4/ip_input.c:412 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_rcv+0xcb/0x2e0 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x112/0x1a0 net/core/dev.c:4954 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5066 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1535 tun_get_user+0x273a/0x4aa0 drivers/net/tun.c:1966 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:1999 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007efc418e2198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007efc418e26bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 1247 hardirqs last enabled at (1246): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (1247): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1146): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1146): [] tun_get_user+0x25ad/0x4aa0 drivers/net/tun.c:1913 softirqs last disabled at (1148): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1562 ---[ end trace faf40873f013c60b ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7394 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 0 PID: 7394 Comm: syz-executor.0 Tainted: G W 4.19.183-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Code: 48 8b 45 d8 e9 ed fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 d7 48 89 e5 e8 a4 e0 a2 ff 48 c7 c7 a0 f1 c6 87 e8 1a d0 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 RSP: 0018:ffff8881cfe17110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881d4509c80 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87679ba0 RDI: ffffffff8a1869a0 RBP: ffff8881cfe17110 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e7b94080 R13: ffff8881e8daac40 R14: ffff8881d4509cd8 R15: ffff8881cfe173d4 FS: 00007fb024424700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd61ea3948 CR3: 00000001d7ea5001 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 ip_rcv_finish+0x104/0x270 net/ipv4/ip_input.c:412 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_rcv+0xcb/0x2e0 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x112/0x1a0 net/core/dev.c:4954 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5066 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1535 tun_get_user+0x273a/0x4aa0 drivers/net/tun.c:1966 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:1999 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb024424198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007fb0244246bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 1295 hardirqs last enabled at (1294): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (1295): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1164): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1164): [] tun_get_user+0x25ad/0x4aa0 drivers/net/tun.c:1913 softirqs last disabled at (1166): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1562 ---[ end trace faf40873f013c60c ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7409 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 0 PID: 7409 Comm: syz-executor.3 Tainted: G W 4.19.183-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Code: 48 8b 45 d8 e9 ed fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 d7 48 89 e5 e8 a4 e0 a2 ff 48 c7 c7 a0 f1 c6 87 e8 1a d0 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 RSP: 0018:ffff8881d37ff110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881f46c3840 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87679ba0 RDI: ffffffff8a1869a0 RBP: ffff8881d37ff110 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e7080100 R13: ffff8881e857c100 R14: ffff8881f46c3898 R15: ffff8881d37ff3d4 FS: 00007f07c8fc7700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000050cf74 CR3: 00000001f4c71001 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 ip_rcv_finish+0x104/0x270 net/ipv4/ip_input.c:412 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_rcv+0xcb/0x2e0 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x112/0x1a0 net/core/dev.c:4954 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5066 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1535 tun_get_user+0x273a/0x4aa0 drivers/net/tun.c:1966 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:1999 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f07c8fc7198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f07c8fc76bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 675 hardirqs last enabled at (674): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (675): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (558): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (558): [] tun_get_user+0x25ad/0x4aa0 drivers/net/tun.c:1913 softirqs last disabled at (560): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1562 ---[ end trace faf40873f013c60d ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7490 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 0 PID: 7490 Comm: syz-executor.0 Tainted: G W 4.19.183-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Code: 48 8b 45 d8 e9 ed fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 d7 48 89 e5 e8 a4 e0 a2 ff 48 c7 c7 a0 f1 c6 87 e8 1a d0 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 RSP: 0018:ffff8881d659f110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881ef0d8140 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87679ba0 RDI: ffffffff8a1869a0 RBP: ffff8881d659f110 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e7b94080 R13: ffff8881e8daac40 R14: ffff8881ef0d8198 R15: ffff8881d659f3d4 FS: 00007fb024424700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efc418a0718 CR3: 00000001f44e2001 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 ip_rcv_finish+0x104/0x270 net/ipv4/ip_input.c:412 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_rcv+0xcb/0x2e0 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x112/0x1a0 net/core/dev.c:4954 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5066 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1535 tun_get_user+0x273a/0x4aa0 drivers/net/tun.c:1966 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:1999 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb024424198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007fb0244246bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 1233 hardirqs last enabled at (1232): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (1233): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1106): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1106): [] tun_get_user+0x25ad/0x4aa0 drivers/net/tun.c:1913 softirqs last disabled at (1108): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1562 ---[ end trace faf40873f013c60e ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7511 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 1 PID: 7511 Comm: syz-executor.3 Tainted: G W 4.19.183-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Code: 48 8b 45 d8 e9 ed fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 d7 48 89 e5 e8 a4 e0 a2 ff 48 c7 c7 a0 f1 c6 87 e8 1a d0 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 RSP: 0018:ffff8881d297f110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881f4bf2340 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87679ba0 RDI: ffffffff8a1869a0 RBP: ffff8881d297f110 R08: ffffed103ed25079 R09: ffffed103ed25078 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: ffff8881e7080100 R13: ffff8881e779f840 R14: ffff8881f4bf2398 R15: ffff8881d297f3d4 FS: 00007f07c8fc7700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000050a058 CR3: 00000001d6404003 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 ip_rcv_finish+0x104/0x270 net/ipv4/ip_input.c:412 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_rcv+0xcb/0x2e0 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x112/0x1a0 net/core/dev.c:4954 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5066 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1535 tun_get_user+0x273a/0x4aa0 drivers/net/tun.c:1966 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:1999 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x443/0x890 fs/read_write.c:487 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:608 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f07c8fc7198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f07c8fc76bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 677 hardirqs last enabled at (676): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (677): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (550): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (550): [] tun_get_user+0x25ad/0x4aa0 drivers/net/tun.c:1913 softirqs last disabled at (552): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1562 ---[ end trace faf40873f013c60f ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7512 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 0 PID: 7512 Comm: syz-executor.3 Tainted: G W 4.19.183-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Code: 48 8b 45 d8 e9 ed fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 d7 48 89 e5 e8 a4 e0 a2 ff 48 c7 c7 a0 f1 c6 87 e8 1a d0 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 RSP: 0018:ffff8881cf7c7110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881d4ebc500 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87679ba0 RDI: ffffffff8a1869a0 RBP: ffff8881cf7c7110 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e7080100 R13: ffff8881e857c100 R14: ffff8881d4ebc558 R15: ffff8881cf7c73d4 FS: 00007f07c8fa6700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000050bb34 CR3: 00000001d6404002 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356