Public bug reported: I seem to be getting the dmesg associated with (BIOS area) memory corruptions:
$ dmesg | grep -B 3 -A 3 'memory corruption' [ 0.000000] 9 disabled [ 0.000000] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WC UC- WT [ 0.000000] e820: last_pfn = 0x7b000 max_arch_pfn = 0x400000000 [ 0.000000] Scanning 1 areas for low memory corruption [ 0.000000] Base memory trampoline at [ffff9251c0098000] 98000 size 24576 [ 0.000000] Using GB pages for direct mapping [ 0.000000] BRK [0x0aa51000, 0x0aa51fff] PGTABLE -- [ 1.921953] Freeing initrd memory: 40180K (ffff9251f3176000 - ffff9251f58b3000) [ 1.921959] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 1.921962] software IO TLB [mem 0x6d6c6000-0x716c6000] (64MB) mapped at [ffff92522d6c6000-ffff9252316c5fff] [ 1.922193] Scanning for low memory corruption every 60 seconds [ 1.923014] futex hash table entries: 1024 (order: 4, 65536 bytes) [ 1.923057] audit: initializing netlink subsys (disabled) [ 1.923084] audit: type=2000 audit(1485733297.863:1): initialized According to https://bugzilla.kernel.org/show_bug.cgi?id=16661#c15, the fix was committed 6 years ago: a fix for this has been merged in .37-rc1 ... x86, bios: By default, reserve the low 64K for all BIOSes It looks like the kernel is being built with an option that's no longer needed (or I have mixed-up issues or mis-parsed the bug reports). ********** $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.10 Release: 16.10 Codename: yakkety goldmont:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.10 Release: 16.10 Codename: yakkety ** Affects: kernel-package (Ubuntu) Importance: Undecided Status: New ** Attachment added: "Result from 'ubuntu-bug linux'" https://bugs.launchpad.net/bugs/1660222/+attachment/4810604/+files/apport.linux-image-4.8.0-27-generic.dut9t4h5.apport -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1660222 Title: Kernel message "Scanning for low memory corruption every 60 seconds" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kernel-package/+bug/1660222/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
