On Tue, Nov 10, 2009 at 04:47:50PM +0100, Luca Niccoli wrote: > I'm running 2.6.31 (from debian source) and I experienced hard freezes > on removing the module or disconnecting the USB card. > The patch at [1] seems to have fixed the problem, so it would be nice > if it could be included in the 2.6.31 branch. > Note that I was not experiencing the freezes with the distribution > kernel, just with a self compiled one (without source modifications > though, only config). > Cheers, > > Luca > > (For further info please Cc: me) > > [1] > http://marc.info/?l=linux-wireless&m=125731443329754&w=2 This has already been sent with the proper tagging to make the stable crew aware of it... Thanks, John commit 37b12dd2b07b4d7dc222a5f7f88b25cec532b2aa Author: Larry Finger <Larry.Finger@xxxxxxxxxxxx> Date: Wed Nov 4 00:00:25 2009 -0600 rtl8187: Fix kernel oops when device is removed when LEDS enabled As reported by Rick Farina (sidhayn@xxxxxxxxx), removing the RTL8187 USB stick, or unloading the driver rtl8187 using rmmod will cause a kernel oops. There are at least two forms of the failure, (1) BUG: Scheduling while atomic, and (2) a fatal kernel page fault. This problem is reported in Bugzilla #14539. This problem does not occur for kernel 2.6.31, but does for 2.6.32-rc2, thus it is technically a regression; however, bisection did not locate any faulty patch. The fix was found by comparing the faulty code in rtl8187 with p54usb. My interpretation is that the handling of work queues in mac80211 changed enough to the LEDs to be unregistered before tasks on the work queues are cancelled. Previously, these actions could be done in either order. (Herton Ronaldo Krzesinski <herton@xxxxxxxxxxxxxxx> reports that the code is the same in 2.6.31, so this may be a candidate for 2.6.31.x. -- JWL) Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx> Reported-by: Rick Farina <sidhayn@xxxxxxxxx> Tested-by: Rick Farina <sidhayn@xxxxxxxxx> Cc: stable@xxxxxxxxxx Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx> -- John W. Linville Someday the world will need a hero, and you linville@xxxxxxxxxxxxx might be all we have. Be ready. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
