Bug 749186

Summary: BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
Product: [Fedora] Fedora Reporter: Matthias Scheutz <matthias.scheutz>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 15CC: darwish.07, gansalmon, itamar, jakems, jonathan, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-11-18 12:30:12 EST Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Description Matthias Scheutz 2011-10-26 08:38:42 EDT
Description of problem:

Screen goes blank for a few seconds with kernel bug output, then the systems resumes, but sounds is not working any longer.

Version-Release number of selected component (if applicable):


How reproducible:

This happens very rarely and it is not predictable when it will happen unfortunately; it seems, however, that it only occurs when skype is running


Steps to Reproduce:
1.
2.
3.
  
Actual results:


Expected results:


Additional info:

[594749.968657] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
[594749.968710] IP: [<ffffffffa02c4b6e>] setup_bdle+0x4f/0xe4 [snd_hda_intel]
[594749.968756] PGD 21d85b067 PUD 1ea4b4067 PMD 0 
[594749.968796] Oops: 0000 [#1] SMP 
[594749.968819] CPU 0 
[594749.968831] Modules linked in: ses enclosure tcp_lp joydev tun vfat fat usb_storage uas cpufreq_powersave lp 8021q garp stp llc sunrpc cpufreq_ondemand acpi_cpufreq mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ip6_tables rfcomm bnep snd_hda_codec_hdmi snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq_dummy arc4 btusb bluetooth iwlagn mac80211 snd_seq_oss snd_seq_midi_event snd_seq iTCO_wdt snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm cfg80211 uvcvideo videodev media v4l2_compat_ioctl32 dell_laptop i2400m_usb i2400m iTCO_vendor_support wimax snd_timer snd rfkill dell_wmi ppdev parport_pc sparse_keymap soundcore snd_page_alloc parport i2c_i801 dcdbas e1000e microcode ipv6 sdhci_pci sdhci mmc_core wmi i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[594749.969359] 
[594749.969371] Pid: 4117, comm: skype Tainted: G        W   2.6.40.6-0.fc15.x86_64 #1 Dell Inc. Latitude E6420/0K0DNP
[594749.969426] RIP: 0010:[<ffffffffa02c4b6e>]  [<ffffffffa02c4b6e>] setup_bdle+0x4f/0xe4 [snd_hda_intel]
[594749.969478] RSP: 0018:ffff8801fa231b58  EFLAGS: 00010293
[594749.969507] RAX: 0000000000000000 RBX: ffff88021d3c9e00 RCX: 0000000000000000
[594749.969547] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88021d3c9e00
[594749.969586] RBP: ffff8801fa231b98 R08: 0000000000000004 R09: 0000000000000001
[594749.969627] R10: 00000000000006c4 R11: 0000000000000000 R12: 0000000000000000
[594749.969664] R13: ffff88021ce1ca00 R14: ffff8801fa231be0 R15: ffff88021e654000
[594749.969703] FS:  0000000000000000(0000) GS:ffff88022dc00000(0063) knlGS:00000000ed0fdb70
[594749.969746] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[594749.969787] CR2: 0000000000000028 CR3: 0000000157950000 CR4: 00000000000406f0
[594749.969824] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[594749.969863] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[594749.969903] Process skype (pid: 4117, threadinfo ffff8801fa230000, task ffff88015afe8000)
[594749.969945] Stack:
[594749.969957]  ffff8801fa231b98 ffffffffa042cf69 0000000000000206 ffff88021ce1ca00
[594749.970002]  ffff8801578b5800 ffff88021d3c9e00 ffff88021ce1f400 ffff88021b77b380
[594749.970048]  ffff8801fa231c18 ffffffffa02c4e34 0000100000000000 00000001db48a000
[594749.970094] Call Trace:
[594749.970115]  [<ffffffffa042cf69>] ? snd_hda_calc_stream_format+0x60/0xcd [snd_hda_codec]
[594749.970159]  [<ffffffffa02c4e34>] azx_pcm_prepare+0x231/0x3ec [snd_hda_intel]
[594749.970203]  [<ffffffffa0237a78>] snd_pcm_do_prepare+0x19/0x2c [snd_pcm]
[594749.970242]  [<ffffffffa0237572>] snd_pcm_action_single+0x33/0x6a [snd_pcm]
[594749.970280]  [<ffffffff81486eb5>] ? _cond_resched+0xe/0x22
[594749.970314]  [<ffffffffa02376a5>] snd_pcm_action_nonatomic+0x4f/0x68 [snd_pcm]
[594749.970355]  [<ffffffffa02385cc>] snd_pcm_common_ioctl1+0x3ee/0x9ef [snd_pcm]
[594749.970396]  [<ffffffff811f586e>] ? avc_has_perm_flags+0x61/0x7a
[594749.970432]  [<ffffffffa0239111>] snd_pcm_playback_ioctl1+0x27e/0x293 [snd_pcm]
[594749.970472]  [<ffffffff811f68e8>] ? inode_has_perm+0x32/0x34
[594749.970506]  [<ffffffffa02394f6>] snd_pcm_ioctl_compat+0x188/0x62e [snd_pcm]
[594749.970542]  [<ffffffff81161ee8>] compat_sys_ioctl+0x1f9/0x12f1
[594749.970573]  [<ffffffff8112fba4>] ? path_put+0x20/0x24
[594749.970603]  [<ffffffff810a0f88>] ? audit_syscall_entry+0x145/0x171
[594749.970637]  [<ffffffff81490100>] sysenter_dispatch+0x7/0x2e
[594749.970668] Code: cc e9 94 00 00 00 41 81 7d 40 ff 00 00 00 0f 87 94 00 00 00 48 8b 83 c0 00 00 00 44 89 e2 44 89 e6 48 89 df 48 8b 80 d8 02 00 00 
[594749.970821]  8b 48 28 48 89 d0 81 e2 ff 0f 00 00 48 c1 e8 0c 48 c1 e0 04 
[594749.970887] RIP  [<ffffffffa02c4b6e>] setup_bdle+0x4f/0xe4 [snd_hda_intel]
[594749.970923]  RSP <ffff8801fa231b58>
[594749.970943] CR2: 0000000000000028
[594750.031843] ---[ end trace b7eeafe0c7ebac89 ]---
Comment 1 Jake Shipton 2011-11-18 12:30:12 EST

-- 
Fedora Bugzappers volunteer triage team
https://fedoraproject.org/wiki/BugZappers

*** This bug has been marked as a duplicate of bug 702056 ***