Hello ext4 developers, I am trying to run a kernel with grsecurity with the size overflow protection and am getting the following warnings / errors: dmesg: http://pastebin.com/wr3UGLS9 config: http://pastebin.com/sr8M9bP0 mballoc.* (make fs/ext4/mballoc.o EXTRA_CFLAGS="-fdump-tree-all -fdump-ipa-all") http://filebin.ca/3DMIChVw9lQM/mballoc.tgz According to the grsecurity developers it seems to be a bug in ext4: https://forums.grsecurity.net/viewtopic.php?f=1&t=4678&p=16971 The response from ephox (PAX team / grsecurity developer): -- Thanks for the report. I think this is an upstream bug. Based on the runtime values provided by you, ext4_mb_new_group_pa() tries to store a value into pa->pa_lstart which larger than UINT_MAX which comes from ext4_group_first_block_no(). Could you please report it to the ext4 developers? -- I'll try to answer all the questions but I'm not an expert in this area. I am also not subscribed to this mailinglist so please keep me in the CC. Regards, Matthijs Möhlmann
