| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 24 Sep 2014 18:44:08 +0200 From: Marcin Gibula <m.gibula@...il.com> To: linux-kernel@...r.kernel.org Subject: 3.16.1 - general protection fault Hi, I've been playing with 3.16 kernel on my test machine as a KVM hypervisor and encountered the following crash twice (almost identical backtraces). Sep 24 09:39:31 dev4 kernel: general protection fault: 0000 [#1] SMP Sep 24 09:39:31 dev4 kernel: Modules linked in: ip6table_filter ip6_tables iptable_filter ebt_arp act_police cls_u32 sch_ingress cls_fw sch_sfq sch_htb ebt_dnat ebt_ip ebtable_nat ebtables iptable_raw xt_CT x86_pkg_temp_thermal mpt2sas raid_cla ss scsi_transport_sas i2c_i801 igb i2c_algo_bit megaraid_sas Sep 24 09:39:31 dev4 kernel: CPU: 7 PID: 1892 Comm: kworker/7:1 Not tainted 3.16.1-gentoo #2 Sep 24 09:39:31 dev4 kernel: Hardware name: Supermicro X9DRW-7TPF+/X9DRW-7TPF+, BIOS 3.0 07/24/2013 Sep 24 09:39:31 dev4 kernel: Workqueue: rpciod rpc_async_schedule Sep 24 09:39:31 dev4 kernel: task: ffff88102865de80 ti: ffff88102456c000 task.ti: ffff88102456c000 Sep 24 09:39:31 dev4 kernel: RIP: 0010:[<ffffffff8113421c>] [<ffffffff8113421c>] __kmalloc_node_track_caller+0xac/0x100 Sep 24 09:39:31 dev4 kernel: RSP: 0018:ffff88102456f958 EFLAGS: 00010246 Sep 24 09:39:31 dev4 kernel: RAX: 0000000000000000 RBX: ffff8804fa153600 RCX: 000000000040471f Sep 24 09:39:31 dev4 kernel: RDX: 000000000040471e RSI: 0000000000000000 RDI: 00000000000147c0 Sep 24 09:39:31 dev4 kernel: RBP: ffff88102456f988 R08: ffff88103fcf47c0 R09: ffffffff8151d1c9 Sep 24 09:39:31 dev4 kernel: R10: ffff88102456fc70 R11: 0000000000000000 R12: 002560400038002c Sep 24 09:39:31 dev4 kernel: R13: ffff88103f803400 R14: 00000000ffffffff R15: 0000000000010220 Sep 24 09:39:31 dev4 kernel: FS: 0000000000000000(0000) GS:ffff88103fce0000(0000) knlGS:0000000000000000 Sep 24 09:39:31 dev4 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Sep 24 09:39:31 dev4 kernel: CR2: 00007fcdf3508000 CR3: 0000001d41163000 CR4: 00000000001427e0 Sep 24 09:39:31 dev4 kernel: Stack: Sep 24 09:39:31 dev4 kernel: ffffffff8151d1f9 ffff8804fa153600 ffff88102456f9e7 0000000000000020 Sep 24 09:39:31 dev4 kernel: 0000000000000800 00000000ffffffff ffff88102456f9c8 ffffffff8151d11c Sep 24 09:39:31 dev4 kernel: ffff88103fcf4790 ffff8804fa153600 0000000000000020 00000000ffffffff Sep 24 09:39:31 dev4 kernel: Call Trace: Sep 24 09:39:31 dev4 kernel: [<ffffffff8151d1f9>] ? __alloc_skb+0x79/0x1c0 Sep 24 09:39:31 dev4 kernel: [<ffffffff8151d11c>] __kmalloc_reserve.isra.41+0x2c/0x90 Sep 24 09:39:31 dev4 kernel: [<ffffffff8151d1f9>] __alloc_skb+0x79/0x1c0 Sep 24 09:39:31 dev4 kernel: [<ffffffff81589fb4>] sk_stream_alloc_skb+0x34/0x100 Sep 24 09:39:31 dev4 kernel: [<ffffffff8158ad07>] tcp_sendmsg+0x667/0xd20 Sep 24 09:39:31 dev4 kernel: [<ffffffff815b11c2>] inet_sendmsg+0x42/0xb0 Sep 24 09:39:31 dev4 kernel: [<ffffffff81513380>] sock_sendmsg+0xa0/0xc0 Sep 24 09:39:31 dev4 kernel: [<ffffffff810a6f31>] ? load_balance+0x151/0x850 Sep 24 09:39:31 dev4 kernel: [<ffffffff815133d2>] kernel_sendmsg+0x32/0x40 Sep 24 09:39:31 dev4 kernel: [<ffffffff81622a09>] xs_send_kvec+0x89/0xa0 Sep 24 09:39:31 dev4 kernel: [<ffffffff81622e5e>] xs_sendpages+0x5e/0x1f0 Sep 24 09:39:31 dev4 kernel: [<ffffffff81623057>] xs_tcp_send_request+0x67/0x120 Sep 24 09:39:31 dev4 kernel: [<ffffffff81620cd0>] xprt_transmit+0x50/0x260 Sep 24 09:39:31 dev4 kernel: [<ffffffff8161dfb8>] call_transmit+0x1a8/0x250 Sep 24 09:39:31 dev4 kernel: [<ffffffff816255a6>] __rpc_execute+0x56/0x280 Sep 24 09:39:31 dev4 kernel: [<ffffffff8108a208>] ? pwq_activate_delayed_work+0x28/0x40 Sep 24 09:39:31 dev4 kernel: [<ffffffff816257f1>] rpc_async_schedule+0x21/0x30 Sep 24 09:39:31 dev4 kernel: [<ffffffff8108c81b>] process_one_work+0x13b/0x390 Sep 24 09:39:31 dev4 kernel: [<ffffffff8108d17b>] worker_thread+0x11b/0x510 Sep 24 09:39:31 dev4 kernel: [<ffffffff8108d060>] ? cancel_delayed_work_sync+0x10/0x10 Sep 24 09:39:31 dev4 kernel: [<ffffffff81092b44>] kthread+0xc4/0xe0 Sep 24 09:39:31 dev4 kernel: [<ffffffff81092a80>] ? kthread_create_on_node+0x170/0x170 This machine is serving as NFS client and KVM hypervisor. I'm still not sure how to trigger it reliably (right now, I just have to run ubuntu instalation in VM guest multiple times and sometimes it triggers). Attaching .config, slub.s and disassembled __kmalloc_node_track_caller function. -- mg View attachment "slub-disassembly.txt" of type "text/plain" (4451 bytes) Download attachment "kernel.config" of type "application/octet-stream" (80364 bytes) Download attachment "slub.s" of type "application/octet-stream" (273721 bytes)
Powered by blists - more mailing lists