On Sat, May 28, 2016 at 06:04:58PM +0200, Wolfram Sang wrote: > > > These kinds of use after frees don't always cause a runtime problem. I > > found it using static analysis, but I bet you could detect it if you > > enabled kasan. The other option is to enable PAGE_POISONING? > > Thanks, PAGE_POISONING did trigger the issue. So, I now picked up your > patch instead of the revert because I could verify the problem and the > proper solution. Thanks again. > > What I still wonder: Which analysis reported the problem to you? I > always run sparse, smatch, cppcheck, and coccicheck on the patches when > applying and no-one reported the issue. It's a Smatch warning but you have to build the cross function db to detect this. It takes a while (a few hours) but the command is simple enough. ./smatch_scripts/build_kernel_data.sh regards, dan carpenter -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
