Bug 159603

Summary: snd_ali_codec_ready soft lockup.
Product: [Fedora] Fedora Reporter: Martin Garton <martin>
Component: kernelAssignee: Dave Jones <davej>
Status: CLOSED RAWHIDE QA Contact: Brian Brock <bbrock>
Severity: low Docs Contact:
Priority: medium    
Version: rawhideCC: aribender, pfrields, wtogami
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-03-06 05:18:56 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Martin Garton 2005-06-05 17:12:51 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050524 Fedora/1.0.4-4 Firefox/1.0.4

Description of problem:
BUG during boot:

BUG: soft lockup detected on CPU#0!

Pid: 1067, comm:             modprobe
EIP: 0060:[<e795703a>] CPU: 0
EIP is at snd_ali_codec_ready+0x3a/0x8b [snd_ali5451]
 EFLAGS: 00000202    Not tainted  (2.6.11-1.1369_FC4)
EAX: 5374807e EBX: 5374807e ECX: 00008800 EDX: 00008840
ESI: fffbd06a EDI: 00000000 EBP: 00000040 DS: 007b ES: 007b
CR0: 8005003b CR2: 093bc4d8 CR3: 2616e000 CR4: 000006d0
 [<e7957223>] snd_ali_codec_peek+0x87/0xa3 [snd_ali5451]
 [<e7957268>] snd_ali_codec_read+0xd/0x11 [snd_ali5451]
 [<e798b1b4>] snd_ac97_read+0x25/0x2d [snd_ac97_codec]
 [<e7991118>] patch_ad1881_chained1+0x46/0xae [snd_ac97_codec]
 [<e7991235>] patch_ad1881_chained+0xb5/0xe3 [snd_ac97_codec]
 [<e79913ab>] patch_ad1881+0x148/0x17b [snd_ac97_codec]
 [<e79915ac>] patch_ad1981b+0xb/0x3e [snd_ac97_codec]
 [<e798d554>] snd_ac97_get_name+0x189/0x1e9 [snd_ac97_codec]
 [<e798daaa>] snd_ac97_mixer+0x32d/0xb68 [snd_ac97_codec]
 [<c01c7d53>] create_proc_entry+0x5c/0xbb
 [<c015c398>] kcalloc+0x16/0x4d
 [<e790a53d>] snd_device_new+0x1d/0x5f [snd]
 [<e798d75c>] snd_ac97_bus+0x91/0xb2 [snd_ac97_codec]
 [<e7959f2f>] snd_ali_mixer+0x63/0xb1 [snd_ali5451]
 [<e7959ebe>] snd_ali_mixer_free_ac97+0x0/0xe [snd_ali5451]
 [<e795aad2>] snd_ali_probe+0x9e/0x12a [snd_ali5451]
 [<c020f638>] kobject_hotplug+0x29c/0x396
 [<c021b470>] pci_device_probe_static+0x25/0x31
 [<c021b49c>] __pci_device_probe+0x20/0x30
 [<c021b4c7>] pci_device_probe+0x1b/0x32
 [<c0287ce7>] driver_probe_device+0x21/0x55
 [<c0287e0e>] driver_attach+0x4f/0x85
 [<c020ec4d>] kobject_register+0x2e/0x59
 [<c028821c>] bus_add_driver+0x8a/0xb7
 [<c021b68d>] pci_register_driver+0x89/0xa0
 [<c014839d>] sys_init_module+0xbb/0x1b5
 [<c0103a51>] syscall_call+0x7/0xb
 [<c01505e1>] softlockup_tick+0x95/0x1b8
 [<c012cd3d>] update_wall_time+0x14/0x40
 [<c012d331>] do_timer+0x4d/0xfb
 [<c0108c2e>] timer_interrupt+0x60/0x1b5
 [<c02bb74e>] ide_dma_intr+0x0/0xb5
 [<c015085d>] handle_IRQ_event+0x2e/0x5a
 [<c015093c>] __do_IRQ+0xb3/0x367
 [<c0105b1d>] do_IRQ+0x4a/0x82
 =======================
 [<c0103c0e>] common_interrupt+0x1a/0x20
 [<e795007b>] snd_seq_oss_midi_clear_all+0x29/0x1d1 [snd_seq_oss]
 [<e795703a>] snd_ali_codec_ready+0x3a/0x8b [snd_ali5451]
 [<e7957223>] snd_ali_codec_peek+0x87/0xa3 [snd_ali5451]
 [<e7957268>] snd_ali_codec_read+0xd/0x11 [snd_ali5451]
 [<e798b1b4>] snd_ac97_read+0x25/0x2d [snd_ac97_codec]
 [<e7991118>] patch_ad1881_chained1+0x46/0xae [snd_ac97_codec]
 [<e7991235>] patch_ad1881_chained+0xb5/0xe3 [snd_ac97_codec]
 [<e79913ab>] patch_ad1881+0x148/0x17b [snd_ac97_codec]
 [<e79915ac>] patch_ad1981b+0xb/0x3e [snd_ac97_codec]
 [<e798d554>] snd_ac97_get_name+0x189/0x1e9 [snd_ac97_codec]
 [<e798daaa>] snd_ac97_mixer+0x32d/0xb68 [snd_ac97_codec]
 [<c01c7d53>] create_proc_entry+0x5c/0xbb
 [<c015c398>] kcalloc+0x16/0x4d
 [<e790a53d>] snd_device_new+0x1d/0x5f [snd]
 [<e798d75c>] snd_ac97_bus+0x91/0xb2 [snd_ac97_codec]
 [<e7959f2f>] snd_ali_mixer+0x63/0xb1 [snd_ali5451]
 [<e7959ebe>] snd_ali_mixer_free_ac97+0x0/0xe [snd_ali5451]
 [<e795aad2>] snd_ali_probe+0x9e/0x12a [snd_ali5451]
 [<c020f638>] kobject_hotplug+0x29c/0x396
 [<c021b470>] pci_device_probe_static+0x25/0x31
 [<c021b49c>] __pci_device_probe+0x20/0x30
 [<c021b4c7>] pci_device_probe+0x1b/0x32
 [<c0287ce7>] driver_probe_device+0x21/0x55
 [<c0287e0e>] driver_attach+0x4f/0x85
 [<c020ec4d>] kobject_register+0x2e/0x59
 [<c028821c>] bus_add_driver+0x8a/0xb7
 [<c021b68d>] pci_register_driver+0x89/0xa0
 [<c014839d>] sys_init_module+0xbb/0x1b5
 [<c0103a51>] syscall_call+0x7/0xb
 
boot continues and things _seem_ work fine (so far)


Version-Release number of selected component (if applicable):
kernel-2.6.11-1.1369_FC4

How reproducible:
Always

Steps to Reproduce:
1. boot on machine with appropriate ali sound device.
2. read dmesg output.


Additional info:
Comment 1 Dave Jones 2005-06-27 23:17:06 UTC 
Mass update of -test bugs to update version to fc4.
(Please retest on final release, and report results if you have not already done
so).

Thanks.
Comment 2 Martin Garton 2005-07-02 09:01:01 UTC 
yes, still happens with FC4 final kernel 2.6.11-1.1369_FC4.

I haven't found any actual broken functionality with this bug so it remains low
priority.
Comment 3 Ariel Bendersky 2005-07-15 15:16:44 UTC 
That same thing happens to me uppon insert of a cd rom, or when I try to boot
with a cdrom on the drive.

I found out that if I mount the cd rom manually with "-t iso9660" it works fine,
but it hangs like described in the first message of this thread if I let it
automount, or I mount it without "-t iso9660"
Comment 4 Martin Garton 2005-07-15 15:35:02 UTC 
Ariel,

I think you may have a different bug. See
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=162347

Have a closer look at the error text you are getting and compare to the one in
this bug. Here it fails in snd_ali_codec_ready but I suspect yours is failing in
__ide_end_request or similar.
Comment 5 Dave Jones 2005-07-15 18:26:14 UTC 
Martin, the soft lockup patch got dropped from the FC4 update kernels.
It's still present in the rawhide kernels, so I'm going to migrate this bug to a
devel/ bug to track this.

This is just hiding the problem for FC4, but tbh, it's not that big a problem,
its mostly just a correctness thing, and as its a) during boot and b) doesn't
break anything, its not anything to worry about.

Thanks.
Comment 6 Dave Jones 2006-03-06 05:18:56 UTC 
now explicitly schedules whilst waiting, should be fixed properly in rawhide/fc5