Hello, colleagues, On Sat, Nov 26, 2011 at 10:43 AM, Jonathan Nieder <[email protected]> wrote: > Ben Hutchings wrote: >> On Wed, 2011-06-22 at 19:24 +0400, Dmitry Eremin-Solenikov wrote: > >>> After upgrading to squeeze I've started receiving the following BUG in dmesg >>> when apcupsd tries to access hid device for my UPS (APC SmartUPS 3000, >>> connected via USB). >> [...] >> >> There have been some changes to this driver in later versions that are >> supposed to fix this. However it still looks like there are some broken >> cases, so I'll try to deal with them as well rather than fixing only >> part of the problem. > > v2.6.38-rc1~442^2~20 (HID: Fix race between disconnect and hiddev_ioctl, > 2010-12-06) seems to follow a sane approach. > > Follow-up fixes: > > . v2.6.38-rc1~442^2~19 (HID: Consolidate device existence checks in > hiddev_ioctl, 2010-12-06) > . v3.0-rc1~345^2^3 (HID: hiddev: fix race between hiddev_disconnect and > hiddev_release, 2011-05-20) > . v3.0-rc4~20^2~6 (HID: hiddev: fix potential use-after-free, > 2011-05-24) > . v3.0-rc4~20^2~4 (HID: hiddev: fix use after free in hiddev_release, > 2011-05-26) > > Dmitry, I assume you can still reproduce this. Could you try a 3.x.y > kernel from sid? The only packages needed from outside squeeze aside > from linux-image-3.1.0-1-686-pae itself are linux-base and > initramfs-tools.
Unfortunately I cannot try reproducing this error, as I don't have access to this hardware anymore. The problem was easily reproducible though by using apcupsd together with any USB APC ups. -- With best wishes Dmitry -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
