Hello Tomáš On Thu, Nov 10, 2011 at 10:18:16AM +0100, Tomáš Janoušek wrote: > On Wed, Nov 09, 2011 at 05:51:59PM +0100, Stanislaw Gruszka wrote: > > I just discovered that CONFIG_DEBUG_PAGEALLOC does not work as expected. > > It leave most of free pages unprotected, hence unintentional write to > > them is not discovered. I'm attaching additional patch, which should > > make detection actually work. > > > > If kernel will does not boot with corrupt_dbg=1, you may try to catch > > corruption without that option. Attached patch should make it possible, > > however having corrupt_dbg=1 increase probability of the catch. > > Okay, I applied this additional patch, and by the increased memory usage (as > shown by free) I concluded that it indeed works. However, I was still able to > reproduce the issue without a single error being written to dmesg. :-( If "dmesg | grep corrupt" will show "Setting corrupt debug order to 1" patches are in use. Anyway I need to test the patches locally, to see if they work as expected, perhaps exception is generated but call-trace is not printed. Is this happen only with "Intel Corporation Centrino Advanced-N 6205" or with some other adapters? > I will try some really old kernels as Wey suggested to see whether it makes > any sense to bisect it, but if it does, it might take more time than I can > make free. Yes, bisection is very time consuming, especially when reproducing is not easy. > Perhaps it would be cheaper to just get another card in that case. > :-) That will left issue unresolved :-( Stanislaw -- 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
