From mboxrd@z Thu Jan 1 00:00:00 1970 From: valdis.kletnieks@vt.edu Subject: next-20180605 - BUG in ipv6_add_addr Date: Thu, 07 Jun 2018 16:17:23 -0400 Message-ID: <15599.1528402643@turing-police.cc.vt.edu> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1528402643_2539P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org To: netdev@vger.kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org --==_Exmh_1528402643_2539P Content-Type: text/plain; charset=us-ascii Hit the following, after which my network connection was pretty much hosed This ring any bells? I don't have a reproducer for this, so bisecting is problematic.... [ 1820.832682] BUG: unable to handle kernel NULL pointer dereference at 0000000000000209 [ 1820.832728] RIP: 0010:ipv6_add_addr+0x280/0xd10 [ 1820.832732] Code: 49 8b 1f 0f 84 6a 0a 00 00 48 85 db 0f 84 4e 0a 00 00 48 8b 03 48 8b 53 08 49 89 45 00 49 8b 47 10 49 89 55 08 48 85 c0 74 15 <48> 8b 50 08 48 8b 00 49 89 95 b8 01 00 00 49 89 85 b0 01 00 00 4c [ 1820.832847] RSP: 0018:ffffaa07c2fd7880 EFLAGS: 00010202 [ 1820.832853] RAX: 0000000000000201 RBX: ffffaa07c2fd79b0 RCX: 0000000000000000 [ 1820.832858] RDX: a4cfbfba2cbfa64c RSI: 0000000000000000 RDI: ffffffff8a8e9fa0 [ 1820.832862] RBP: ffffaa07c2fd7920 R08: 000000000000017a R09: ffffffff8a555300 [ 1820.832866] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888d18e71c00 [ 1820.832871] R13: ffff888d0a9b1200 R14: 0000000000000000 R15: ffffaa07c2fd7980 [ 1820.832876] FS: 00007faa51bdb800(0000) GS:ffff888d1d400000(0000) knlGS:0000000000000000 [ 1820.832880] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1820.832885] CR2: 0000000000000209 CR3: 000000021e8f8001 CR4: 00000000001606e0 [ 1820.832888] Call Trace: [ 1820.832898] ? __local_bh_enable_ip+0x119/0x260 [ 1820.832904] ? ipv6_create_tempaddr+0x259/0x5a0 [ 1820.832912] ? __local_bh_enable_ip+0x139/0x260 [ 1820.832921] ipv6_create_tempaddr+0x2da/0x5a0 [ 1820.832926] ? ipv6_create_tempaddr+0x2da/0x5a0 [ 1820.832941] manage_tempaddrs+0x1a5/0x240 [ 1820.832951] inet6_addr_del+0x20b/0x3b0 [ 1820.832959] ? nla_parse+0xce/0x1e0 [ 1820.832968] inet6_rtm_deladdr+0xd9/0x210 [ 1820.832981] rtnetlink_rcv_msg+0x1d4/0x5f0 [ 1820.832989] ? netlink_deliver_tap+0xe2/0x7a0 [ 1820.832996] ? rtnetlink_put_metrics+0x290/0x290 [ 1820.833003] netlink_rcv_skb+0x4d/0x140 [ 1820.833012] rtnetlink_rcv+0x15/0x20 [ 1820.833018] netlink_unicast+0x215/0x340 [ 1820.833027] netlink_sendmsg+0x2e3/0x6a0 [ 1820.833040] sock_sendmsg+0x6a/0xf0 [ 1820.833047] __sys_sendto+0x15d/0x220 [ 1820.833059] ? __sys_recvmsg+0x51/0x90 [ 1820.833068] ? do_syscall_64+0x30/0xee7 [ 1820.833076] __x64_sys_sendto+0x2f/0x50 [ 1820.833082] do_syscall_64+0x98/0xee7 [ 1820.833089] ? trace_hardirqs_off_caller+0x1f/0xd0 [ 1820.833096] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1820.833107] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1820.833113] RIP: 0033:0x7faa50ed831d --==_Exmh_1528402643_2539P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Comment: Exmh version 2.8.0 04/21/2017 iQEVAwUBWxmS040DS38y7CIcAQJ4QQf+KNa4d8PnSJOgSpBLgCLlDl7jX44LRa5G Yg1vdlKzqvdMSEk+ug0Nj6VYz7TMEhDVcGZzCI7/mHhyDdysONJXSgQ07yyBdSKa /a7MZKn4JV52zJOIQklnbIHyYfe0JiN3GS2s2TxQIEJrmEVOTnKEpSRajuJiPb8Q H6e2jhM92tH/dzMmmaqLyzPn48wTOe0J2pKgX4fkXqU6dX5OhjxQeK0v0eMSCCgo pauoj3EWDkxRIW6mCVI8zYfS2bVJZzgWGJGY+5H9oYVdWY3mUAdQa4CnpfJBNiHk 7Ql9vgcbEKTOLk64VEAHUKXPF+6VceCxz5Kfs/3GbL8qq1+ZYbngrA== =g1qN -----END PGP SIGNATURE----- --==_Exmh_1528402643_2539P--