https://bugzilla.kernel.org/show_bug.cgi?id=45621 Ivan Shapovalov <intelfx100@xxxxxxxxx> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |intelfx100@xxxxxxxxx --- Comment #7 from Ivan Shapovalov <intelfx100@xxxxxxxxx> 2012-11-07 09:58:39 --- This (or similar) seems to be reproducible with reiser4 (another out-of-tree filesystem) on a custom kernel. Symptoms: 1) on newly allocated pages, sometimes page_private(pg) != 0ul 2) sometimes BUGs happen on 0000_0000_0000_000e in a following scenario: pg = find_or_create_page(...); // check for pg != NULL // pg->mapping is accessed Happens 2-3 times a day. Also different BUGs happened (addresses 0016, 00b0, 0f91) but the backtraces seem to be invalid and I can't describe the actual in-code scenario. Directly observed on kernels 3.2 to latest stable (but current reiser4 maintainer, Edward Shishkin, seen this on 2.6.39 - though just 1-2 times at all). In my case, the kernel is vanilla + -ck patchset + various config changes (KSM, big pagetables, cleancache+frontswap+zcache, sparse memory model, transparent hugepages). The config is here: ftp://intelfx.homeip.net/kernel_config Hardware is Acer 3830TG (HM65 chipset, SNB cpu, 4 GB of RAM). Running in x86_64 mode. I know that this is too small level of detail - but can anything be done to track down/collect more info? -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
