bisecting fixing commit since dda0e2920330128e0dbdeb11c8f25031aa40b11c building syzkaller on 5ed396e666c7826bed46f06c4db1409376691fed testing commit dda0e2920330128e0dbdeb11c8f25031aa40b11c with gcc (GCC) 8.4.1 20210217 kernel signature: c00bf96e6ad2fb72be29c319cfca7dc9342b4fcd7c52115302a89ba8e7c42c50 run #0: crashed: WARNING in ip_rt_bug run #1: crashed: WARNING in ip_rt_bug run #2: crashed: WARNING in corrupted 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 corrupted run #7: crashed: WARNING in ip_rt_bug run #8: crashed: WARNING in ip_rt_bug run #9: crashed: WARNING in corrupted 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 ip_rt_bug run #18: crashed: WARNING in ip_rt_bug run #19: crashed: WARNING in ip_rt_bug testing current HEAD eb575cd5d7f60241d016fdd13a9e86d962093c9b testing commit eb575cd5d7f60241d016fdd13a9e86d962093c9b with gcc (GCC) 8.4.1 20210217 kernel signature: 8c9f4c630e5cf1b4969cbb981770f0ea7bffa5d982e4e116d6374e4f8e22c96d run #0: crashed: WARNING in corrupted 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 corrupted revisions tested: 2, total time: 31m24.871753543s (build: 23m52.295897495s, test: 6m25.721502859s) the crash still happens on HEAD commit msg: Linux 4.19.195 crash: WARNING in corrupted IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready syz-executor.1 uses obsolete (PF_INET,SOCK_PACKET) ------------[ cut here ]------------ ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7206 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 WARNING: CPU: 1 PID: 7204 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: 7206 Comm: syz-executor.5 Not tainted 4.19.195-syzkaller #0 CPU: 1 PID: 7204 Comm: syz-executor.3 Not tainted 4.19.195-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 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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 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:ffff8881cda77110 EFLAGS: 00010282 RSP: 0018:ffff8881dafbf110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881e2c446c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 RAX: 0000000000000024 RBX: ffff8881d7cd60c0 RCX: 0000000000000000 RBP: ffff8881cda77110 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e765c1c0 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 RBP: ffff8881dafbf110 R08: ffffed103ed25079 R09: ffffed103ed25078 R13: ffff8881e8fca1c0 R14: ffff8881e2c44718 R15: ffff8881cda773d4 FS: 00007f42f40a8700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: ffff8881d0e84100 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 R13: ffff8881d0e98cc0 R14: ffff8881d7cd6118 R15: ffff8881dafbf3d4 FS: 00007f8cea669700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CR2: 00007ffc6629bcbc CR3: 00000001cd92b003 CR4: 00000000001606f0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 CR2: 00007ffc58b82fc8 CR3: 00000001da03a006 CR4: 00000000001606e0 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Call Trace: 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 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_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 __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_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_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 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+0x1f/0x1b0 net/core/dev.c:5066 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1543 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1543 tun_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 tun_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:2007 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:2007 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 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 vfs_write+0x150/0x4d0 fs/read_write.c:549 ksys_write+0x103/0x260 fs/read_write.c:599 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_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 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4641a9 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 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:00007f42f40a8198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RSP: 002b:00007f8cea669198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f42f40a86bc R14: 00000000ffffffff R15: 0000000000000003 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 irq event stamp: 1501 R13: 00007f8cea6696bc R14: 00000000ffffffff R15: 0000000000000003 hardirqs last enabled at (1500): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (1501): [] trace_hardirqs_off_thunk+0x1a/0x1c irq event stamp: 1299 softirqs last enabled at (1346): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1346): [] tun_get_user+0x287c/0x4ae0 drivers/net/tun.c:1921 hardirqs last enabled at (1298): [] console_unlock+0xb9f/0xde0 kernel/printk/printk.c:2464 softirqs last disabled at (1348): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 hardirqs last disabled at (1299): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1196): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1196): [] tun_get_user+0x287c/0x4ae0 drivers/net/tun.c:1921 ---[ end trace 530180c45b82a334 ]--- softirqs last disabled at (1198): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 ------------[ cut here ]------------ ---[ end trace 530180c45b82a335 ]--- WARNING: CPU: 0 PID: 7216 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 0 PID: 7216 Comm: syz-executor.0 Tainted: G W 4.19.195-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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 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:ffff8881cdb07110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881d7de2940 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 RBP: ffff8881cdb07110 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e7a14080 R13: ffff8881d0ddf200 R14: ffff8881d7de2998 R15: ffff8881cdb073d4 FS: 00007f0c6ff9a700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd9a788e000 CR3: 00000001d86c0004 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ------------[ cut here ]------------ Call Trace: WARNING: CPU: 1 PID: 7220 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 Modules linked in: ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 CPU: 1 PID: 7220 Comm: syz-executor.4 Tainted: G W 4.19.195-syzkaller #0 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 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:ffff8881da6ff110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881e7a431c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 RBP: ffff8881da6ff110 R08: ffffed103ed25079 R09: ffffed103ed25078 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: ffff8881d0df4140 R13: ffff8881e7ec52c0 R14: ffff8881e7a43218 R15: ffff8881da6ff3d4 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 FS: 00007f13a2935700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd9a789c028 CR3: 00000001d8dff005 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 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_rcv_finish+0x104/0x270 net/ipv4/ip_input.c:412 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 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_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 __netif_receive_skb_one_core+0x112/0x1a0 net/core/dev.c:4954 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5066 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1543 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 tun_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 __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:1543 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:2007 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_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 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 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:2007 entry_SYSCALL_64_after_hwframe+0x49/0xbe 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 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:00007f0c6ff9a198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 vfs_write+0x150/0x4d0 fs/read_write.c:549 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 ksys_write+0x103/0x260 fs/read_write.c:599 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f0c6ff9a6bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 1439 hardirqs last enabled at (1438): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (1439): [] trace_hardirqs_off_thunk+0x1a/0x1c __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 softirqs last enabled at (1312): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1312): [] tun_get_user+0x287c/0x4ae0 drivers/net/tun.c:1921 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 softirqs last disabled at (1314): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 entry_SYSCALL_64_after_hwframe+0x49/0xbe ---[ end trace 530180c45b82a336 ]--- 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:00007f13a2935198 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: 00007f13a29356bc R14: 00000000ffffffff R15: 0000000000000003 ------------[ cut here ]------------ irq event stamp: 139 hardirqs last enabled at (138): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (139): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (18): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (18): [] tun_get_user+0x287c/0x4ae0 drivers/net/tun.c:1921 softirqs last disabled at (20): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 ---[ end trace 530180c45b82a337 ]--- WARNING: CPU: 0 PID: 7234 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 0 PID: 7234 Comm: syz-executor.2 Tainted: G W 4.19.195-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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 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:ffff8881dfce7110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881e8872580 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 RBP: ffff8881dfce7110 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881d0d600c0 R13: ffff8881e93e0c80 R14: ffff8881e88725d8 R15: ffff8881dfce73d4 FS: 00007f12496f9700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002014f000 CR3: 00000001d6df9006 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:1543 tun_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:2007 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:00007f12496f9198 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: 00007f12496f96bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 1361 hardirqs last enabled at (1360): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (1361): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1220): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1220): [] tun_get_user+0x287c/0x4ae0 drivers/net/tun.c:1921 softirqs last disabled at (1222): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 ---[ end trace 530180c45b82a338 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7251 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 0 PID: 7251 Comm: syz-executor.3 Tainted: G W 4.19.195-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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 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:ffff8881cf547110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881d5274e40 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 RBP: ffff8881cf547110 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881d0e84100 R13: ffff8881d0e99280 R14: ffff8881d5274e98 R15: ffff8881cf5473d4 FS: 00007f8cea669700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002014f000 CR3: 00000001d666d001 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:1543 tun_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:2007 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:00007f8cea669198 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: 00007f8cea6696bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 1363 hardirqs last enabled at (1362): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (1363): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1226): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1226): [] tun_get_user+0x287c/0x4ae0 drivers/net/tun.c:1921 softirqs last disabled at (1228): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 ---[ end trace 530180c45b82a339 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7302 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 1 PID: 7302 Comm: syz-executor.5 Tainted: G W 4.19.195-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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 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:ffff8881da4ff110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881cf6a4a40 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 RBP: ffff8881da4ff110 R08: ffffed103ed25079 R09: ffffed103ed25078 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: ffff8881e765c1c0 R13: ffff8881e653f900 R14: ffff8881cf6a4a98 R15: ffff8881da4ff3d4 FS: 00007f42f40a8700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002014f000 CR3: 00000001d78d1004 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:1543 tun_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:2007 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:00007f42f40a8198 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: 00007f42f40a86bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 1243 hardirqs last enabled at (1242): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (1243): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1128): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1128): [] tun_get_user+0x287c/0x4ae0 drivers/net/tun.c:1921 softirqs last disabled at (1130): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 ---[ end trace 530180c45b82a33a ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7321 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 1 PID: 7321 Comm: syz-executor.2 Tainted: G W 4.19.195-syzkaller #0 ------------[ cut here ]------------ Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 WARNING: CPU: 0 PID: 7330 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: 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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 CPU: 0 PID: 7330 Comm: syz-executor.3 Tainted: G W 4.19.195-syzkaller #0 RSP: 0018:ffff8881d721f110 EFLAGS: 00010282 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RAX: 0000000000000024 RBX: ffff8881f4bc9340 RCX: 0000000000000000 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 RBP: ffff8881d721f110 R08: ffffed103ed25079 R09: ffffed103ed25078 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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: ffff8881d0d600c0 RSP: 0018:ffff8881d476f110 EFLAGS: 00010282 R13: ffff8881e93e06c0 R14: ffff8881f4bc9398 R15: ffff8881d721f3d4 FS: 00007f12496f9700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 RAX: 0000000000000024 RBX: ffff8881d44ef280 RCX: 0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 RBP: ffff8881d476f110 R08: ffffed103ed05079 R09: ffffed103ed05078 CR2: 00000000004d9fa0 CR3: 00000001d50de002 CR4: 00000000001606e0 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881d0e84100 R13: ffff8881d0e99280 R14: ffff8881d44ef2d8 R15: ffff8881d476f3d4 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 FS: 00007f8cea669700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 CR2: 00007ffc19a6cff8 CR3: 00000001df102005 CR4: 00000000001606f0 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:1543 netif_receive_skb+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1543 tun_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 tun_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:2007 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:2007 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 __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 RIP: 0033:0x4641a9 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 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 entry_SYSCALL_64_after_hwframe+0x49/0xbe RSP: 002b:00007f12496f9198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RIP: 0033:0x4641a9 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 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 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RSP: 002b:00007f8cea669198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f12496f96bc R14: 00000000ffffffff R15: 0000000000000003 R13: 00007f8cea6696bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 1255 irq event stamp: 1345 hardirqs last enabled at (1254): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (1255): [] trace_hardirqs_off_thunk+0x1a/0x1c hardirqs last enabled at (1344): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (1345): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1126): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1126): [] tun_get_user+0x287c/0x4ae0 drivers/net/tun.c:1921 softirqs last disabled at (1128): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 softirqs last enabled at (1228): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1228): [] tun_get_user+0x287c/0x4ae0 drivers/net/tun.c:1921 ---[ end trace 530180c45b82a33b ]--- softirqs last disabled at (1230): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 ---[ end trace 530180c45b82a33c ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7339 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 0 PID: 7339 Comm: syz-executor.0 Tainted: G W 4.19.195-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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 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:ffff8881d59f7110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881d79158c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 RBP: ffff8881d59f7110 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e7a14080 R13: ffff8881d0ddf200 R14: ffff8881d7915918 R15: ffff8881d59f73d4 FS: 00007f0c6ff9a700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002014f000 CR3: 00000001cd8b7003 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:1543 tun_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:2007 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:00007f0c6ff9a198 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: 00007f0c6ff9a6bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 1571 hardirqs last enabled at (1570): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (1571): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1442): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1442): [] tun_get_user+0x287c/0x4ae0 drivers/net/tun.c:1921 softirqs last disabled at (1444): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 ---[ end trace 530180c45b82a33d ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7362 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 1 PID: 7362 Comm: syz-executor.2 Tainted: G W 4.19.195-syzkaller #0 ------------[ cut here ]------------ 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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 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:ffff8881f4677110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881f41bde00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 RBP: ffff8881f4677110 R08: ffffed103ed25079 R09: ffffed103ed25078 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: ffff8881d0d600c0 R13: ffff8881e93e06c0 R14: ffff8881f41bde58 R15: ffff8881f46773d4 FS: 00007f12496d8700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 WARNING: CPU: 0 PID: 7370 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff71b11438 CR3: 00000001d50de005 CR4: 00000000001606e0 Modules linked in: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 CPU: 0 PID: 7370 Comm: syz-executor.5 Tainted: G W 4.19.195-syzkaller #0 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 dst_output include/net/dst.h:455 [inline] ip_local_out+0x74/0x130 net/ipv4/ip_output.c:125 RIP: 0010:ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 ip_send_skb+0x36/0xa0 net/ipv4/ip_output.c:1447 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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 16 01 <0f> 0b 31 c0 5d c3 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 RSP: 0018:ffff8881d59ef110 EFLAGS: 00010282 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 RAX: 0000000000000024 RBX: ffff8881f50c0200 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 RBP: ffff8881d59ef110 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e765c1c0 R13: ffff8881e8fca1c0 R14: ffff8881f50c0258 R15: ffff8881d59ef3d4 FS: 00007f42f40a8700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564da17e8017 CR3: 00000001d5568002 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 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_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 ip_push_pending_frames+0x4d/0x70 net/ipv4/ip_output.c:1467 icmp_push_reply+0x383/0x610 net/ipv4/icmp.c:398 ip_rcv_finish+0x104/0x270 net/ipv4/ip_input.c:412 __icmp_send+0xbcd/0x18e0 net/ipv4/icmp.c:747 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 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0xad/0xc0 net/ipv4/ip_options.c:485 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5066 ip_rcv_options net/ipv4/ip_input.c:282 [inline] ip_rcv_finish_core.isra.16+0x3b1/0x1830 net/ipv4/ip_input.c:356 netif_receive_skb_internal+0xca/0x300 net/core/dev.c:5156 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+0x3b/0x1e0 net/core/dev.c:5213 tun_rx_batched.isra.54+0x4d8/0x9c0 drivers/net/tun.c:1543 __netif_receive_skb_one_core+0x112/0x1a0 net/core/dev.c:4954 tun_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 __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:1543 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:2007 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_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 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 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:2007 entry_SYSCALL_64_after_hwframe+0x49/0xbe 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 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:00007f12496d8198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000d0d RCX: 00000000004641a9 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 vfs_write+0x150/0x4d0 fs/read_write.c:549 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 ksys_write+0x103/0x260 fs/read_write.c:599 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bfa0 R13: 00007f12496d86bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 251 hardirqs last enabled at (250): [] console_unlock+0x660/0xde0 kernel/printk/printk.c:2489 hardirqs last disabled at (251): [] trace_hardirqs_off_thunk+0x1a/0x1c __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 softirqs last enabled at (122): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (122): [] tun_get_user+0x287c/0x4ae0 drivers/net/tun.c:1921 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 softirqs last disabled at (124): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 ---[ end trace 530180c45b82a33e ]--- 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:00007f42f40a8198 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: 00007f42f40a86bc R14: 00000000ffffffff R15: 0000000000000003 irq event stamp: 1255 hardirqs last enabled at (1254): [] console_unlock+0xb9f/0xde0 kernel/printk/printk.c:2464 hardirqs last disabled at (1255): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1128): [] rcu_read_unlock include/linux/rcupdate.h:677 [inline] softirqs last enabled at (1128): [] tun_get_user+0x287c/0x4ae0 drivers/net/tun.c:1921 softirqs last disabled at (1130): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 ---[ end trace 530180c45b82a33f ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7396 at net/ipv4/route.c:1240 ip_rt_bug+0x18/0x20 net/ipv4/route.c:1240 Modules linked in: CPU: 1 PID: 7396 Comm: syz-executor.3 Tainted: G W 4.19.195-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 14 e6 a2 ff 48 c7 c7 80 41 c7 87 e8 72 f4 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:ffff8881d4f87110 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881d24e5980 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b1a0 RDI: ffffffff8a1869a0 RBP: ffff8881d4f87110 R08: ffffed103ed25079 R09: ffffed103ed25078 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: ffff8881d0e84100 R13: ffff8881d0e98cc0 R14: ffff8881d24e59d8 R15: ffff8881d4f873d4 FS: 00007f8cea669700(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffb6d9ab20 CR3: 00000001decf6005 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:1543 tun_get_user+0x2944/0x4ae0 drivers/net/tun.c:1974 tun_chr_write_iter+0xb7/0x1a0 drivers/net/tun.c:2007 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:00007f8cea669198 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: 00007f8cea6696bc 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+0x287c/0x4ae0 drivers/net/tun.c:1921 softirqs last disabled at (204): [] tun_rx_batched.isra.54+0x439/0x9c0 drivers/net/tun.c:1570 ---[ end trace 530180c45b82a340 ]---