On Fri, Jun 03, 2016 at 11:17:16AM +0200, Philipp Hahn wrote: > Hello, > > Am 02.06.2016 um 22:02 schrieb J. Bruce Fields: > > On Thu, Jun 02, 2016 at 09:51:27AM +0200, Philipp Hahn wrote: > >> probably during heavy IO our file server crashed on a BUG_ON in dache.c, > >> probably triggered by NFS: > >> > >>> ------------[ cut here ]------------ > >>> kernel BUG at /var/build/temp/tmp.BPql4ErveJ/pbuilder/linux-3.16.7-ckt25/fs/dcache.c:2373! > ... > >> Our kernel is 3.16.7-ckt25 from Debian + ckt26 and ckt27 on top. > > > > So this is the BUG_ON(!d_unhashed(..)) at the top of __d_rehash? I > > don't know the -ckt kernels, and I don't have a BUG at line 2373 of > > dcache.c, or something else? > > Yes, exactly that first line. Oh, from googling... it looks like that's what they're calling the Ubuntu kernels these days? It'd be best to have them triage this first. > > There have been a lot of changes in the area since 3.16.7. > > Too bad. > Any concrete hint or should I better spent my time convincing management > to install a newer Linux kernel? I don't know if a newer kernel's better, but if you were able to reproduce this frequently then experimenting with different kernel versions might be one way to work this out. I suppose 75a2352d0110960aeee1a28ddc09a55f97c99100 might in theory be a fix? Not a tall sure of that, though. --b. > > Anyway, thank you for the response. > > Philipp -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
