On Sat, Apr 11, 2015 at 3:55 AM, Ben Hutchings <[email protected]> wrote:
> Control: tag -1 patch moreinfo > > On Sat, 2015-04-11 at 01:30 +0300, Lebedev Roman wrote: > > Package: src:linux > > Version: 3.16.7-ckt9-1 > > Severity: important > > > > Dear Maintainer, > > > > kernel version 3.16.7-ckt9-1 is broken, a deadlock at mount time happens > in BTRFS. > > Previous kernel version (which i'm using right now to report this) - > 3.16.7-ckt7-1 is fine. > > > > This is a known upstream issue: > > >From https://btrfs.wiki.kernel.org/index.php/Gotchas > > * Stable kernel version 3.19.1+ can cause a deadlock at mount time > > * * workaround: boot with older kernel, or run btrfs-zero-log to clear > the log (beware of the consequences) > > * * fix: scheduled for 3.19.4, or apply 9c4f61f01d269815bb7c37. > > * * also affected: 3.14.35+, 3.18.9+ > > > > I consider this issue to be of "grave" severity, but only for those > using BTRFS. > > > > Please fix this. > > (either backport that patch or revert to previous kernel (3.16.7-ckt7-1) > or drop the patches that cause this) > > > > NOTE: i have already downgraded to ckt7 to report this, so all the lines > below are for ckt7, not ckt9. > > Please test a kernel package built with this patch added: > > https://people.debian.org/~benh/packages/linux-image-3.16.0-4-amd64_3.16.7-ckt9-2~bwh.1_amd64.deb I have tested provided kernel, and i can confirm that the issue is fixed there. It boots fine, no deadlock. To test, i have got my FS into the state when it hanged 3.16.7-ckt9-1 on boot, which i got installed, and then, without doing anything to the FS, i tried booting 3.16.7-ckt9-2~bwh-1, and it succeeded. > The sha256sum of that file is: > f6f194e841341a8e837fac9d53c0a82b2b7e77cb31807784167869a1c97058b7 > linux-image-3.16.0-4-amd64_3.16.7-ckt9-2~bwh.1_amd64.deb > > Ben. > > -- > Ben Hutchings > compatible: Gracefully accepts erroneous data from any source > Roman.
