[Buildd-tools-devel] Bug#520713: init script start hangs

[Peter Palfrader]

Package: schroot
Version: 1.2.1-1
Severity: critical

On goetz (our alpha buildd) the init script's start action hangs, causing the
system to not boot up cleanly.

Since the init script is run in rcS/75, before there is an sshd or
anything else useful this breaks the system completely, requiring remote
hands from a local person if no OOB access is available.

goetz:~# sh -x /etc/init.d/schroot start
...
Recovering schroot sessions:+ return
++ /usr/bin/schroot --all-sessions --list --quiet
+ for chroot in '`$SCHROOT --all-sessions --list --quiet`'
+ /usr/bin/schroot --chroot=sid-alpha-sbuild-7855514e-e68e-40e3-8198-61366cd44074 --recover-session
[just hangs here]

It appears to be stuck in some kind of futex thing:

weasel at goetz:~$ sudo strace -p 11214 2>&1 | head
Process 11214 attached - interrupt to quit
futex(0x120140158, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x120140158, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x120140158, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x120140158, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x120140158, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x120140158, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x120140158, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x120140158, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x120140158, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
weasel at goetz:~$