udisksd crashed with SIGSEGV in g_variant_unref()

[Ana Katalinova]

no idea!

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: udisks2 1.99.0-1
ProcVersionSignature: Ubuntu 3.5.0-6.6-generic 3.5.0
Uname: Linux 3.5.0-6-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.4-0ubuntu6
Architecture: amd64
Date: Thu Aug 2 14:38:43 2012
ExecutablePath: /usr/lib/udisks2/udisksd
InstallationMedia: This
MachineType: Acer Aspire 5943G
ProcCmdline: /usr/lib/udisks2/udisksd --no-debug
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-6-generic root=UUID=021d2b15-ed4b-42bb-9a9a-c80dd3b92989 ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7f29298dd98d <g_variant_unref+13>: mov 0x24(%rdi),%eax
 PC (0x7f29298dd98d) ok
 source "0x24(%rdi)" (0xaaaaaaaaaaaaaace) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: udisks2
StacktraceTop:
 g_variant_unref () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? ()
 ?? ()
 ?? ()
 ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
Title: udisksd crashed with SIGSEGV in g_variant_unref()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 10/21/2010
dmi.bios.vendor: Acer
dmi.bios.version: V1.15
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Aspire 5943G
dmi.board.vendor: Acer
dmi.board.version: V1.15
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.15
dmi.modalias: dmi:bvnAcer:bvrV1.15:bd10/21/2010:svnAcer:pnAspire5943G:pvrV1.15:rvnAcer:rnAspire5943G:rvrV1.15:cvnAcer:ct10:cvrV1.15:
dmi.product.name: Aspire 5943G
dmi.product.version: V1.15
dmi.sys.vendor: Acer

[Apport retracing service (apport)]

StacktraceTop:
 g_variant_unref (value=0xaaaaaaaaaaaaaaaa) at /build/buildd/glib2.0-2.33.6/./glib/gvariant-core.c:622
 udisks_linux_drive_ata_refresh_smart_sync (drive=0x208b3f0, nowakeup=nowakeup@entry=0, simulate_path=simulate_path@entry=0x0, cancellable=cancellable@entry=0x0, error=error@entry=0x7f29275c7d48) at udiskslinuxdriveata.c:555
 udisks_linux_drive_object_housekeeping (object=object@entry=0x2088d60, secs_since_last=secs_since_last@entry=0, cancellable=cancellable@entry=0x0, error=error@entry=0x7f29275c7d98) at udiskslinuxdriveobject.c:926
 perform_initial_housekeeping_for_drive (job=<optimized out>, cancellable=<optimized out>, user_data=<optimized out>) at udiskslinuxprovider.c:439
 io_job_thread (data=0x20b2d30, user_data=<optimized out>) at /build/buildd/glib2.0-2.33.6/./gio/gioscheduler.c:168

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Martin Pitt (pitti)]

It crashes in udisks_linux_drive_ata_refresh_smart_sync(), called through the 10-minute "housekeeping" thread. drive->smart_attributes is already invalid (0xaaaa...). I figure what happens here is that the drive went away at the same time as the regular SMART update kicked in, and drive->smart_attributes already got unreffed by udisks_linux_drive_ata_finalize().