apport information
** Tags added: apport-collected precise running-unity
** Description changed:
I'm running Ubuntu 12.04 in a VM. After a recent kernel upgrade, I'm
finding that I can reliably put the system in a position where the
inotify_init() syscall returns -EMFILE, but /proc/*/fd shows fewer
"anon_inode:inotify" entries than
/proc/sys/fs/inotify/max_user_instances. Unfortunately the only way I
know how to reproduce this is to run some internal Python unit tests
that exercise pyinotify. But after a few such invokations, there appears
to be a leak.
Perhaps a regression of CVE-2010-4250?
adar@adar-dev:~$ for foo in /proc/*/fd/*; do readlink -f $foo; done | grep
inotify | sort | wc -l
24
adar@adar-dev:~$ cat /proc/sys/fs/inotify/max_user_instances
128
adar@adar-dev:~$ cat inotify_test.c
#include <stdio.h>
#include <sys/inotify.h>
void main(int argc, char *argv[]) {
int err = inotify_init();
if (err == -1) {
perror("inotify_init");
}
}
adar@adar-dev:~$ gcc inotify_test.c -o inotify_test
adar@adar-dev:~$ ./inotify_test
inotify_init: Too many open files
+ ---
+ AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
+ ApportVersion: 2.0.1-0ubuntu17.1
+ Architecture: amd64
+ ArecordDevices:
+ **** List of CAPTURE Hardware Devices ****
+ card 0: AudioPCI [Ensoniq AudioPCI], device 0: ES1371/1 [ES1371 DAC2/ADC]
+ Subdevices: 1/1
+ Subdevice #0: subdevice #0
+ AudioDevicesInUse:
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC0: adar 2363 F.... pulseaudio
+ CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211
not found.
+ Card0.Amixer.info:
+ Card hw:0 'AudioPCI'/'Ensoniq AudioPCI ENS1371 at 0x2040, irq 16'
+ Mixer name : 'Cirrus Logic CS4297A rev 3'
+ Components : 'AC97a:43525913'
+ Controls : 24
+ Simple ctrls : 13
+ DistroRelease: Ubuntu 12.04
+ HibernationDevice: RESUME=UUID=69da1950-dcd9-4f58-bcfc-c575290982a5
+ InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
+ IwConfig:
+ lo no wireless extensions.
+
+ eth0 no wireless extensions.
+ Lsusb:
+ Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+ Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
+ Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse
+ Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub
+ MachineType: VMware, Inc. VMware Virtual Platform
+ MarkForUpload: True
+ Package: linux (not installed)
+ ProcEnviron:
+ TERM=xterm
+ PATH=(custom, no user)
+ LANG=en_US.UTF-8
+ SHELL=/bin/bash
+ ProcFB: 0 svgadrmfb
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-36-generic
root=UUID=a63e42ec-99f0-4141-a1f2-f0f1b0cc3dbf ro quiet splash
+ ProcVersionSignature: Ubuntu 3.2.0-36.57-generic 3.2.35
+ RelatedPackageVersions:
+ linux-restricted-modules-3.2.0-36-generic N/A
+ linux-backports-modules-3.2.0-36-generic N/A
+ linux-firmware 1.79.2
+ RfKill:
+
+ Tags: precise running-unity
+ Uname: Linux 3.2.0-36-generic x86_64
+ UpgradeStatus: Upgraded to precise on 2012-05-09 (254 days ago)
+ UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare wireshark
+ dmi.bios.date: 07/02/2012
+ dmi.bios.vendor: Phoenix Technologies LTD
+ dmi.bios.version: 6.00
+ dmi.board.name: 440BX Desktop Reference Platform
+ dmi.board.vendor: Intel Corporation
+ dmi.board.version: None
+ dmi.chassis.asset.tag: No Asset Tag
+ dmi.chassis.type: 1
+ dmi.chassis.vendor: No Enclosure
+ dmi.chassis.version: N/A
+ dmi.modalias:
dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd07/02/2012:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A:
+ dmi.product.name: VMware Virtual Platform
+ dmi.product.version: None
+ dmi.sys.vendor: VMware, Inc.
** Attachment added: "AcpiTables.txt"
https://bugs.launchpad.net/bugs/1101666/+attachment/3488367/+files/AcpiTables.txt
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https://bugs.launchpad.net/bugs/1101666
Title:
inotify fd leak
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