Public bug reported:
Under kernel 3.2.0-54 and 3.9.3 (at least), the accept() system call in
a PF_LOCAL, AF_LOCAL, SOCK_STREAM context returns an addrlen for the
sockaddr_un structure that is too large by one.
As the SUN_LEN macro of the sys/un.h header shows, the "length" of the
structure is expected to be the strlen() of the sun_path member, plus
that member's offset. This is the length used by bind() and connect(),
in particular. But accept() consistently returns a "length" which
includes the trailing null, and is thus too large by one.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-libc-dev 3.2.0-54.82
ProcVersionSignature: Ubuntu 3.2.0-54.82-virtual 3.2.50
Uname: Linux 3.2.0-54-virtual x86_64
AlsaDevices:
total 0
crw-rw---T 1 root audio 116, 1 May 26 09:41 seq
crw-rw---T 1 root audio 116, 33 May 26 09:41 timer
AplayDevices: aplay: device_list:252: no soundcards found...
ApportVersion: 2.0.1-0ubuntu17.9
Architecture: amd64
ArecordDevices: arecord: device_list:252: no soundcards found...
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not
found.
Date: Tue Jun 9 16:14:40 2015
Dependencies:
HibernationDevice: RESUME=UUID=476a0cd7-3578-49f2-b064-1d2151aa9f56
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
Lsusb:
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
MachineType: innotek GmbH VirtualBox
MarkForUpload: True
PciMultimedia:
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-54-virtual
root=UUID=c1c9d001-671e-44c6-8e7c-82f83d591195 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-54-virtual N/A
linux-backports-modules-3.2.0-54-virtual N/A
linux-firmware 1.79.18
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.board.name: VirtualBox
dmi.board.vendor: Oracle Corporation
dmi.board.version: 1.2
dmi.chassis.type: 1
dmi.chassis.vendor: Oracle Corporation
dmi.modalias:
dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise running-unity
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https://bugs.launchpad.net/bugs/1463553
Title:
accept() system call is inconsistent with bind(), connect()
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