sigfault in virObjectLockGuard

Michal Prívozník mprivozn at
Thu Mar 17 12:30:13 UTC 2022

On 3/17/22 13:28, Claudio Fontana wrote:
> Hello all,
> while experimenting with upstream libvirt, I encountered the following segfault when trying to virt-install a centos7 guest:

I've pushed fix earlied today:

commit fcbb8e916bb69990e1f2cfc7a0066e3213daa2c5
Author:     Michal Prívozník <mprivozn at>
AuthorDate: Thu Mar 17 09:19:39 2022 +0100
Commit:     Michal Prívozník <mprivozn at>
CommitDate: Thu Mar 17 09:45:38 2022 +0100

    virnetdev: Use VIR_WITH_MUTEX_LOCK_GUARD in virNetDevGenerateName()

    The virNetDevGenerateName() function uses a global array of
    virNetDevGenName structs to find next unused name for network
    device. This obviously needs some locking and in fact each member
    of the array has its own lock. However, these members are not
    virObjects, they are just plain structs, therefore
    VIR_WITH_MUTEX_LOCK_GUARD() must be used instead of
    VIR_WITH_OBJECT_LOCK_GUARD() to lock individual mutexes.

    Signed-off-by: Michal Privoznik <mprivozn at>
    Reviewed-by: Pavel Hrdina <phrdina at>


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