On Thursday, November 11, 2010, Mike Kazantsev <mk.frag...@gmail.com> wrote: > On Wed, 10 Nov 2010 15:52:51 -0200 > Gustavo Sverzut Barbieri <barbi...@profusion.mobi> wrote: > >> On Wed, Nov 10, 2010 at 2:11 PM, Greg KH <g...@kroah.com> wrote: >> > On Wed, Nov 10, 2010 at 01:02:51PM -0200, Gustavo Sverzut Barbieri wrote: >> >> On Wed, Nov 10, 2010 at 9:33 AM, Gustavo Sverzut Barbieri >> >> >> >> Part of the log (sorry, I had no way but to type it all): >> >> >> >> BUG: unable to handle kernel NULL pointer dereference at 0000000000000128 >> >> IP: [<ffffffff811329fb>] btrfs_test_super+0xb/0x30 >> >> PGD: 26b5b1067 PUD 26a465067 PMD 0 >> >> last sysfs file: /sys/devices/virtual/bdi/btrfs-2/uevent >> >> CPU 0 >> >> Modules linked in: nvidia(P) lib80211_crypt_tkip wl(P) >> >> Pid: 434, comm: mount Tainted: P 2.6.36 #3 Mac-F22586C8/MacBookPro6,2 >> >> RIP: ... btrfs_test_super+0xb/0x30 >> > >> > Sounds like a btrfs issue, have you contacted those developers? >> >> No, I just mailed systemd as people (kay?) seems to be using it, at >> least I saw people here advertising its usage, even the readahead have >> specific code, so maybe people had (or not) issues with it. >> >> Let's face that mounting multiple points simultaneously is not what >> one would expect. >> >> >> > Also, you really are going to have to be able to reproduce this without >> > the closed source kernel modules linked in (broadcom and nvidia) for >> > anyone to even be able to help you out. >> >> yeah, I'm pretty sure about that ;-) >> > > I can reliably reproduce the issue on my hardware and similar vm setup > with several btrfs mounts, activated during boot. > Kernel spits some backtrace into terminal, then, after a few seconds it > enters some kind of crazy endless error-loop, flooding terminal with > more backtraces. > Vanilla 2.6.36 kernel, no proprietary code. > > Since none of these mounts are critical to boot (I didn't trust btrfs > much at the time), I've worked around the issue by > comment=systemd.automount, so they got mounted after boot with systemd. > > I thought about reporting the issue when I've encountered it, but been > a bit busy adapting the system for systemd, so it kina slipped off my > mind. > Guess I'll get all these traces, clean my vm from possible private > stuff (I rsync it from a real machine) and report the setup to btrfs > maintainers in a few days. > Thanks for reminder! ;)
I'd appreciate it as I'm going into a business trip without much spare time do do dev/testing. If possible, add me as mail/bugzilla CC -- Gustavo Sverzut Barbieri http://profusion.mobi embedded systems -------------------------------------- MSN: barbi...@gmail.com Skype: gsbarbieri Mobile: +55 (19) 9225-2202 _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel