Messages in this thread |  | | Date | Sun, 2 Mar 2008 20:34:15 -0300 | | From | "Carlos R. Mafra" <> | | Subject | Re: [BUG] 2.6.25-rc2-git3 broke cdrecord |
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On Sun 2.Mar'08 at 21:53:25 +0100, Mikael Pettersson wrote: > On my main workstation (Intel P965 chipset, ICH8 SATA driven by ahci, > Samsung/Toshiba SH-203P SATA DVD writer, FC5 user-space), cdrecord > stopped working on the 2.6.25-rc3 kernel, with the complaint: > > Warning: controller returns zero sized CD capabilities page. > Warning: controller returns wrong page 0 for CD capabilities page (2A). > > There's nothing in dmesg to suggest that the kernel has experienced > some problem. > > 2.6.25-rc2-git2 was the last working kernel, 2.6.25-rc2-git3 up to > today's 2.6.25-rc3-git3 are all non-working. > > I've narrowed the cause down to these two commits in 2.6.25-rc2-git3: > > 40b01b9bbdf51ae543a04744283bf2d56c4a6afa > block: update bio according to DMA alignment padding > > 6b00769fe1502b4ad97bb327ef7ac971b208bfb5 > block: add request->raw_data_len > > Four or so subsequent commits depend on the second of these, so it's > easier to test them by applying them to -git2 than to revert them. > > Also, these two need to be treated as a unit. With only the first > applied, I get a massive delay as init tries to start udev, and then > if I try cdrecord it hangs in an unkillable state. > > I've put some information in > <http://user.it.uu.se/~mikpe/linux/bug-2.6.25-rc3-cdrecord/>: > - the kernel's .config > - cdrecord -VV dev=/dev/scd0 blank=fast output for 2.6.25-rc2-git2 and -git3 > - strace -v logs for the above cdrecord runs
I will try to help by pointing you to the patch here: http://lkml.org/lkml/2008/2/28/76
It seems your problem is similar to the one Mike Galbraith reported.
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