From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: Re: seeing crash on running ltp proc01 Date: Wed, 16 Nov 2011 12:16:22 -0800 Message-ID: <20111116121622.3369cf62.akpm@linux-foundation.org> References: <1321431477.4212.7.camel@madhuri-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Mihai Maruseac , Eric Dumazet To: madhuri appana Return-path: In-Reply-To: <1321431477.4212.7.camel@madhuri-laptop> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org (cc's added) On Wed, 16 Nov 2011 13:47:57 +0530 madhuri appana wrote: > Hi All, > > I am seeing crash on running ltp proc01 syscall on kvm guest using > latest qemu1.0 rc0 and latest linus kernel. > > Here is the crash report: > > [ 256.805661] The scan_unevictable_pages sysctl/node-interface has been > disabled for lack of a legitimate use case. If you have one, please > send an email to linux-mm@kvack.org. > [ 256.820968] process `proc01' is using deprecated sysctl (syscall) > net.ipv6.neigh.default.retrans_time; Use > net.ipv6.neigh.default.retrans_time_ms instead. > [ 837.127321] BUG: unable to handle kernel NULL pointer dereference at > 0000000000000010 > [ 837.127980] IP: [] dev_from_new_bucket+0xb/0x79 > [ 837.128053] PGD 3a89d067 PUD 3ad09067 PMD 0 > [ 837.128053] Oops: 0000 [#1] SMP > [ 837.128053] CPU 2 > [ 837.128053] Modules linked in: > [ 837.128053] > [ 837.128053] Pid: 9933, comm: proc01 Not tainted 3.1.0+ #3 Bochs Bochs > [ 837.128053] RIP: 0010:[] [] > dev_from_new_bucket+0xb/0x79 > [ 837.128053] RSP: 0018:ffff880039885e18 EFLAGS: 00010246 > [ 837.128053] RAX: ffffffff818df330 RBX: 0000000000000400 RCX: > 0000000000000000 > [ 837.128053] RDX: ffff880039885e70 RSI: 0000000000000000 RDI: > ffff88003c427600 > [ 837.128053] RBP: ffff880039885e18 R08: 0000000000000010 R09: > ffff88003c427600 > [ 837.128053] R10: ffffffff81c1f610 R11: ffffffff81576fa2 R12: > ffff88003a4e6140 > [ 837.128053] R13: ffff88003c427600 R14: 0000000000000001 R15: > 0000000000000000 > [ 837.128053] FS: 00007f0c56deb7c0(0000) GS:ffff88003f100000(0000) > knlGS:0000000000000000 > [ 837.128053] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 837.128053] CR2: 0000000000000010 CR3: 00000000398a4000 CR4: > 00000000000006e0 > [ 837.128053] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > [ 837.128053] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > 0000000000000400 > [ 837.128053] Process proc01 (pid: 9933, threadinfo ffff880039884000, > task ffff88003a91e6d0) > [ 837.128053] Stack: > [ 837.128053] ffff880039885e28 ffffffff815769db ffff880039885ea8 > ffffffff8111f614 > [ 837.128053] 0000000000000000 ffff880039885e70 ffff88003c427638 > 0000000000000246 > [ 837.128053] ffff880039885f58 00000000006243a0 ffffffff8111f463 > 0000000000000001 > [ 837.128053] Call Trace: > [ 837.128053] [] dev_seq_next+0x61/0x63 > [ 837.128053] [] seq_read+0x1b1/0x369 > [ 837.128053] [] ? seq_lseek+0xd4/0xd4 > [ 837.128053] [] ? seq_lseek+0xd4/0xd4 > [ 837.128053] [] proc_reg_read+0x90/0xaf > [ 837.128053] [] vfs_read+0xa2/0xde > [ 837.128053] [] ? trace_hardirqs_on_caller > +0x11e/0x155 > [ 837.128053] [] sys_read+0x45/0x6c > [ 837.128053] [] system_call_fastpath+0x16/0x1b > [ 837.128053] Code: 42 08 c9 c3 55 83 ff 27 b8 ea ff ff ff 48 89 e5 77 > 0c 89 ff 31 c0 48 89 34 fd 00 8e 63 82 c9 c3 4c 8b 87 d0 00 00 00 55 48 > 89 e5 > [ 837.128053] 8b 10 c1 ea 18 4c 8b 8f d0 00 00 00 31 c9 41 8b 01 89 c6 > 41 > [ 837.128053] RIP [] dev_from_new_bucket+0xb/0x79 > [ 837.128053] RSP > [ 837.128053] CR2: 0000000000000010 > [ 837.148037] ---[ end trace 9639850acd813c5b ]--- > [root@qemu-img-64 bin] > > Thanks, > Madhuri > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/