Thank you for looking at this bug report. We have some additional information.
qemu/kvm with cache=none (common) and aio=threads (default) is required to trigger the bug. aio=native (another common option) does not trigger it in our testing. We applied the following patches on top of Ubuntu-4.15.0-36.39. commit 0aa69fd32a5f766e997ca8ab4723c5a1146efa8b - block: add a lower-level bio_add_page interface commit b403ea2404889e1227812fa9657667a1deb9c694 - block: bio_iov_iter_get_pages: fix size of last iovec commit 9362dd1109f87a9d0a798fbc890cb339c171ed35 - blkdev: __blkdev_direct_IO_simple: fix leak in error case commit 17d51b10d7773e4618bcac64648f30f12d4078fb - block: bio_iov_iter_get_pages: pin more pages for multi-segment IOs The first one introduces a helper function, and the next three are the upstream patchset that fixes the issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1796542 Title: Silent corruption in Linux kernel 4.15 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1796542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
