Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754945Ab0FZMWF (ORCPT ); Sat, 26 Jun 2010 08:22:05 -0400 Received: from mail-iw0-f174.google.com ([209.85.214.174]:35631 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753485Ab0FZMWB convert rfc822-to-8bit (ORCPT ); Sat, 26 Jun 2010 08:22:01 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=aQkMUYbHzxizBz1Y9aP4iCjTseXaR3tlmx3QSGBe7a/Epelyy5a8LtG7NsNTHeOIGf eh9gt+/aX0AM/yv+Z3RHUynqHSnnqNkIOiHtGwSKOunqyT5RKDBtQ5LCYPWcM4qaXnaz hsRrvbBJdTUJqg9/UtbgjVkrlwkrNjZXp+C9w= MIME-Version: 1.0 In-Reply-To: <20100626075125.3d1711ff@tlielax.poochiereds.net> References:

<20100626075125.3d1711ff@tlielax.poochiereds.net> Date: Sat, 26 Jun 2010 22:22:00 +1000 Message-ID: Subject: Re: 2.6.34-rc3 BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 cifs_show_options From: Andrew Hendry To: Jeff Layton Cc: linux-kernel , linux-cifs@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 9288 Lines: 190 I have turned on cifs debug to try to catch it if happens again. (gdb) list *(cifs_show_options+0xf9) 0x309 is in cifs_show_options (fs/cifs/cifsfs.c:336). 331 static void 332 cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server) 333 { 334 seq_printf(s, ",addr="); 335 336 switch (server->addr.sockAddr.sin_family) { 337 case AF_INET: 338 seq_printf(s, "%pI4", &server->addr.sockAddr.sin_addr.s_addr); 339 break; 340 case AF_INET6: On Sat, Jun 26, 2010 at 9:51 PM, Jeff Layton wrote: > On Sat, 26 Jun 2010 20:47:33 +1000 > Andrew Hendry wrote: > >> sorry, this should say 2.6.35-rc3 >> >> On Sat, Jun 26, 2010 at 8:46 PM, Andrew Hendry wrote: >> > From 2.6.34-rc3 >> > Can't reliably reproduce, this was once after a resume over a few days >> > normal use. >> > The No response for cmds lines are normal as NAS takes a while to spin >> > up after resume. >> > System was unstable after message so couldn't collect more state >> > >> > [18446744028.633263] r8169 0000:0b:02.0: eth0: link up >> > [18446744039.623540] eth0: no IPv6 routers present >> > [18446744041.684522] CIFS VFS: No response for cmd 117 mid 21812 >> > [18446744041.684561] CIFS VFS: cifs_mount failed w/return code = -11 >> > [18446744056.674016] CIFS VFS: No response for cmd 114 mid 21813 >> > [18446744056.674105] CIFS VFS: cifs_mount failed w/return code = -112 >> > [18446744060.831668] BUG: unable to handle kernel NULL pointer >> > dereference at 0000000000000048 >> > [18446744060.831680] IP: [] >> > cifs_show_options+0xf9/0x480 [cifs] >> > [18446744060.831699] PGD 2068fe067 PUD 2068fd067 PMD 0 >> > [18446744060.831710] Oops: 0000 [#1] PREEMPT SMP >> > [18446744060.831720] last sysfs file: >> > /sys/devices/system/cpu/sched_smt_power_savings >> > [18446744060.831729] CPU 4 >> > [18446744060.831733] Modules linked in: nls_cp437 cifs fbcon tileblit >> > font bitblit softcursor binfmt_misc kvm_intel kvm snd_hda_codec_via >> > snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss nouveau >> > snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi >> > snd_rawmidi snd_seq_midi_event ttm psmouse snd_seq drm_kms_helper >> > snd_timer snd_seq_device serio_raw snd drm asus_atk0110 soundcore >> > snd_page_alloc i2c_algo_bit usbhid hid ahci r8169 mii libahci >> > pata_jmicron >> > [18446744060.831821] >> > [18446744060.831829] Pid: 2206, comm: udisks-daemon Not tainted >> > 2.6.35-rc3 #6 P7P55D-E PRO/System Product Name >> > [18446744060.831836] RIP: 0010:[] >> > [] cifs_show_options+0xf9/0x480 [cifs] >> > [18446744060.831853] RSP: 0018:ffff880206913dc8 ?EFLAGS: 00010246 >> > [18446744060.831860] RAX: 0000000000000000 RBX: ffff880184a7f140 RCX: >> > 0000000000000006 >> > [18446744060.831867] RDX: 0000000000000006 RSI: 0000000000001000 RDI: >> > ffff880232fb0491 >> > [18446744060.831874] RBP: ffff880206913df8 R08: 000000000000fff8 R09: >> > 0000000000000004 >> > [18446744060.831881] R10: 0000000000000000 R11: 0000000000000000 R12: >> > ffff880231ad7400 >> > [18446744060.831888] R13: ffff8802324d7400 R14: ffff8802324d6b00 R15: >> > 0000000000000000 >> > [18446744060.831896] FS: ?00007fdb12ceb7a0(0000) >> > GS:ffff880001e80000(0000) knlGS:0000000000000000 >> > [18446744060.831904] CS: ?0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> > [18446744060.831910] CR2: 0000000000000048 CR3: 00000002068fb000 CR4: >> > 00000000000006e0 >> > [18446744060.831917] DR0: 0000000000000000 DR1: 0000000000000000 DR2: >> > 0000000000000000 >> > [18446744060.831924] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: >> > 0000000000000400 >> > [18446744060.831932] Process udisks-daemon (pid: 2206, threadinfo >> > ffff880206912000, task ffff880236ae1680) >> > [18446744060.831939] Stack: >> > [18446744060.831942] ?ffff880206913df8 0000000000000000 >> > ffff880184a7f140 ffff880184a7f140 >> > [18446744060.831954] <0> ffff8802324d6b00 ffff880231ad6400 >> > ffff880206913e68 ffffffff811575c7 >> > [18446744060.831966] <0> ffffffff8161b450 0000000000000202 >> > ffff8802318cac00 ffff88023fa6af00 >> > [18446744060.831980] Call Trace: >> > [18446744060.831992] ?[] show_mountinfo+0x237/0x2b0 >> > [18446744060.832004] ?[] seq_read+0x25f/0x3f0 >> > [18446744060.832015] ?[] vfs_read+0xb5/0x180 >> > [18446744060.832024] ?[] ? fget_light+0x7f/0xc0 >> > [18446744060.832033] ?[] sys_read+0x51/0x90 >> > [18446744060.832045] ?[] system_call_fastpath+0x16/0x1b >> > [18446744060.832052] Code: 00 48 c7 c6 9a 7e 2c a0 48 89 df 31 c0 e8 >> > 80 32 ec e0 49 8b 45 28 48 c7 c6 b0 7e 2c a0 4c 8b 78 40 48 89 df 31 >> > c0 e8 67 32 ec e0 <41> 0f b7 47 48 66 83 f8 02 0f 84 98 01 00 00 66 83 >> > f8 0a 0f 84 >> > [18446744060.832164] RIP ?[] >> > cifs_show_options+0xf9/0x480 [cifs] >> > [18446744060.832179] ?RSP >> > [18446744060.832184] CR2: 0000000000000048 >> > [18446744060.832190] BUG: unable to handle kernel NULL pointer >> > dereference at 0000000000000048 >> > [18446744060.832199] IP: [] >> > cifs_show_options+0xf9/0x480 [cifs] >> > [18446744060.832211] ---[ end trace d709801030e1a5a5 ]--- >> > [18446744060.832217] PGD 233e17067 PUD 233e15067 PMD 0 >> > [18446744060.832225] Oops: 0000 [#2] PREEMPT SMP >> > [18446744060.832232] last sysfs file: >> > /sys/devices/system/cpu/sched_smt_power_savings >> > [18446744060.832238] CPU 1 >> > [18446744060.832241] Modules linked in: nls_cp437 cifs fbcon tileblit >> > font bitblit softcursor binfmt_misc kvm_intel kvm snd_hda_codec_via >> > snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss nouveau >> > snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi >> > snd_rawmidi snd_seq_midi_event ttm psmouse snd_seq drm_kms_helper >> > snd_timer snd_seq_device serio_raw snd drm asus_atk0110 soundcore >> > snd_page_alloc i2c_algo_bit usbhid hid ahci r8169 mii libahci >> > pata_jmicron >> > [18446744060.832321] >> > [18446744060.832327] Pid: 1356, comm: hald Tainted: G ? ? ?D >> > 2.6.35-rc3 #6 P7P55D-E PRO/System Product Name >> > [18446744060.832334] RIP: 0010:[] >> > [] cifs_show_options+0xf9/0x480 [cifs] >> > [18446744060.832348] RSP: 0018:ffff880234ac3de8 ?EFLAGS: 00010246 >> > [18446744060.832354] RAX: 0000000000000000 RBX: ffff88020afd0fc0 RCX: >> > 0000000000000006 >> > [18446744060.832360] RDX: 0000000000000006 RSI: 0000000000001000 RDI: >> > ffff880232f7f3e5 >> > [18446744060.832366] RBP: ffff880234ac3e18 R08: 000000000000fff8 R09: >> > 0000000000000004 >> > [18446744060.832372] R10: 0000000000000000 R11: 0000000000000002 R12: >> > ffff880231ad7400 >> > [18446744060.832378] R13: ffff8802324d7400 R14: ffff8802324d6b00 R15: >> > 0000000000000000 >> > [18446744060.832384] FS: ?00007f0b1c325700(0000) >> > GS:ffff880001e20000(0000) knlGS:0000000000000000 >> > [18446744060.832390] CS: ?0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> > [18446744060.832396] CR2: 0000000000000048 CR3: 0000000235641000 CR4: >> > 00000000000006e0 >> > [18446744060.832401] DR0: 0000000000000000 DR1: 0000000000000000 DR2: >> > 0000000000000000 >> > [18446744060.832406] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: >> > 0000000000000400 >> > [18446744060.832413] Process hald (pid: 1356, threadinfo >> > ffff880234ac2000, task ffff880234bc9680) >> > [18446744060.832419] Stack: >> > [18446744060.832423] ?ffff880234ac3e18 ffff88020afd0fc0 >> > ffff8802324d6b00 ffff8802324d6b60 >> > [18446744060.832433] <0> ffffffff8161b470 0000000000000000 >> > ffff880234ac3e68 ffffffff81157752 >> > [18446744060.832444] <0> ffff8802324d6b00 ffff88023f986000 >> > ffff880234ac3e68 ffff88020afd0fc0 >> > [18446744060.832458] Call Trace: >> > [18446744060.832467] ?[] show_vfsmnt+0x112/0x150 >> > [18446744060.832475] ?[] seq_read+0x25f/0x3f0 >> > [18446744060.832484] ?[] vfs_read+0xb5/0x180 >> > [18446744060.832492] ?[] ? fget_light+0x7f/0xc0 >> > [18446744060.832500] ?[] sys_read+0x51/0x90 >> > [18446744060.832510] ?[] system_call_fastpath+0x16/0x1b >> > [18446744060.832515] Code: 00 48 c7 c6 9a 7e 2c a0 48 89 df 31 c0 e8 >> > 80 32 ec e0 49 8b 45 28 48 c7 c6 b0 7e 2c a0 4c 8b 78 40 48 89 df 31 >> > c0 e8 67 32 ec e0 <41> 0f b7 47 48 66 83 f8 02 0f 84 98 01 00 00 66 83 >> > f8 0a 0f 84 >> > [18446744060.832634] RIP ?[] >> > cifs_show_options+0xf9/0x480 [cifs] >> > [18446744060.832647] ?RSP >> > [18446744060.832651] CR2: 0000000000000048 >> > [18446744060.832668] ---[ end trace d709801030e1a5a6 ]--- >> > > > (cc'ing new linux-cifs ML) > > Thanks for the bug report. Would you be able to follow the directions > here? That should help us pinpoint the spot where it actually crashed: > > http://wiki.samba.org/index.php/LinuxCIFS_troubleshooting#Oopses > > Thanks! > -- > Jeff Layton > -- 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/