Bug 6645
| Summary: | SMP + USB2.0 EHCI crash. If both SMP and EHCI are used this bug happens. Either disabling SMP or EHCI and bug doesnt appear. Reproduced on 2 different ASUS P5AD2-E Premium boards with intel 925X chipset. | ||
|---|---|---|---|
| Product: | Platform Specific/Hardware | Reporter: | Davor Emard (davoremard) |
| Component: | i386 | Assignee: | platform_i386 |
| Status: | REJECTED UNREPRODUCIBLE | ||
| Severity: | blocking | CC: | mchehab, protasnb |
| Priority: | P2 | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.16.19 | Subsystem: | |
| Regression: | --- | Bisected commit-id: | |
| Attachments: | Crash captured with serial cable. Crashes randomly. Now it is in dvb demux part but sometimes it also randomly crashes in ehci and smp code. | ||
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Description
Davor Emard
2006-06-04 23:48:38 UTC
Created attachment 8249 [details]
Crash captured with serial cable. Crashes randomly. Now it is in dvb demux part but sometimes it also randomly crashes in ehci and smp code.
This crash happens if
enough specific traffic over usb 2.0
is generated with hyperthreading cpu SMP
support and EHCI (usb 2.0 driver) toghether
are compiled in. Disable either SMP or
EHCI and this crash will never happen.
Just by chance in this attachment crash log
captured by serial cable it crashed in dvb
demux part but I know this part is quite
stable as I contributed myself to the demux
core part which is running unchanged for
over 2 years.
By removing the suspect modules one by one
(dvb, firewire, ethernet, preempt, smp, ehci)
and watching the stability of the machine
I found out the combination which triggers
the bug
Emard
You say "Most recent kernel where this bug did not occur: 2.6.16.19", whcih can't be correct. Please clarify. Mauro, this is DVB-related. Hello, I think this bug affect my system. I'm on Ubuntu and I have recently switched from Ubuntu 6.06 (kernel 2.6.15-27) to Ubuntu 6.10 (kernel 2.6.17-10). Since I've switched, my system freeze randomly (about 1 times a day and more) and I have no other choice than push the reset button. Yesterday i've seen that freezes arrives more frequently when i use my USB scanner on Xsane. After lots of tests and crash, i've decided to boot my kernel with -noapic -nolapic options. This disable hyperthreading and my PIV is seen on Ubuntu as one only CPU. But it don't freeze anymore. After a lot a search i've find this bug report and i come here. My configuration is: PIV HT 3,2 Ghz (S378) on Abit IS-7. USB Scanner Agfa Snapscan 1212U and USB Printer HP 970Cxi on a hub and only a joypad are my USB p It seems to be a hardware failure. Probably, some troubles on your memories or overheating. Try to run a memory stress test on it, like memtest. Reply-To: vordah@gmail.com > ------- Additional Comments From blackmajor@free.fr 2006-11-10 07:50 ------- > Hello, > > I think this bug affect my system. I'm on Ubuntu and I have recently switched > from Ubuntu 6.06 (kernel 2.6.15-27) to Ubuntu 6.10 (kernel 2.6.17-10). Since > I've switched, my system freeze randomly (about 1 times a day and more) and I > have no other choice than push the reset button. > > Yesterday i've seen that freezes arrives more frequently when i use my USB > scanner on Xsane. After lots of tests and crash, i've decided to boot my kernel > with -noapic -nolapic options. This disable hyperthreading and my PIV is seen on > Ubuntu as one only CPU. But it don't freeze anymore. After a lot a search i've > find this bug report and i come here. > > My configuration is: PIV HT 3,2 Ghz (S378) on Abit IS-7. USB Scanner Agfa > Snapscan 1212U and USB Printer HP 970Cxi on a hub and only a joypad are my USB > p Emard, Have you tried latest kernel (2.6.22-rc5)? You mentioned that your system crashes in random places. Can you provide another traces to illustrate this. Thanks. Since no activity on the bug, closing. Please reopen if confirmed with latest kernel. |