Here is a simpler example program:
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <wait.h>
int
main(argc, argv)
int argc;
char **argv;
{
int pid, rpid;
int st;
if (argc < 2) {
fprintf(stderr, "usage: %s command ...\n", argv[0]);
return (1);
}
if ((pid = fork()) < 0) {
fprintf(stderr, "fork: %s\n", strerror(errno));
return (1);
}
if (pid == 0) {
execvp(argv[1], &argv[1]);
fprintf(stderr, "exec: %s\n", strerror(errno));
return (1);
}
while ((rpid = wait(&st)) > 0 && rpid != pid)
;
if (rpid < 0) {
fprintf(stderr, "wait: %s\n", strerror(errno));
return (1);
}
printf("status 0x%x\n", st);
return (0);
}
There is some header-file fumble that prevents me from compiling this
with cc -m32, but there are both 32- and 64-bit systems in our
environment, so:
Using kernel 3.13.0-59:
Compile it on a 64-bit system, and run
./forkexec date
and all is well.
Compile it on a 32-bit system, then, on a 64-bit system, run
./forkexec date
and date prints nothing, while forkexec reports exit status 0x8b.
On the other hand, still on the 64-bit system, point it at a 32-bit binary and
all is well. e.g.
./forkexec ./forkexec
just prints the expected usage: message, so it execed itself properly; no
SIGSEGV.
To confound matters further:
-- take out the fork (so the program just calls exec) and all is well
-- run the program under strace -f and the problem vanishes
All this happens under kernel 3.13.0-59 but not 3.13.0-55 (we've put off
a few updates).
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1479093
Title:
Segfault in ld-2.19.so while starting Steam after upgrade to
3.13.0-59.98
Status in linux package in Ubuntu:
Invalid
Status in linux-lts-utopic package in Ubuntu:
Invalid
Status in linux-lts-vivid package in Ubuntu:
Invalid
Status in linux source package in Trusty:
Confirmed
Status in linux-lts-utopic source package in Trusty:
Invalid
Status in linux-lts-vivid source package in Trusty:
Invalid
Status in linux source package in Vivid:
Invalid
Status in linux-lts-utopic source package in Vivid:
Invalid
Status in linux-lts-vivid source package in Vivid:
Invalid
Status in linux source package in Wily:
Invalid
Status in linux-lts-utopic source package in Wily:
Invalid
Status in linux-lts-vivid source package in Wily:
Invalid
Bug description:
The previous kernel 3.13.0-58.97 does not show the issue when booting back
into it. Currently only noticed on starting Steam but there its is reproducable
every time on X230 laptop (Intel graphics). Might be related to Steam using
32bit libraries.
Attaching some log and dump that steam produces but fails to upload
(wherever).
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-59-generic 3.13.0-59.98
ProcVersionSignature: Ubuntu 3.13.0-59.98-generic 3.13.11-ckt22
Uname: Linux 3.13.0-59-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: smb 2678 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Jul 28 21:42:17 2015
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=7aacd0c3-12d4-4f50-baf7-e1fd8f871f95
InstallationDate: Installed on 2013-07-25 (733 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: LENOVO 2324CTO
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-59-generic.efi.signed
root=UUID=5d3281d3-0142-4039-bb9b-28653778aca0 ro quiet splash
mmc-core.removable=0 nomdmonddf nomdmonisw vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-59-generic N/A
linux-backports-modules-3.13.0-59-generic N/A
linux-firmware 1.127.14
SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2014-04-29 (455 days ago)
dmi.bios.date: 04/30/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: G2ET94WW (2.54 )
dmi.board.asset.tag: Not Available
dmi.board.name: 2324CTO
dmi.board.vendor: LENOVO
dmi.board.version: Win8 Pro DPK TPG
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrG2ET94WW(2.54):bd04/30/2013:svnLENOVO:pn2324CTO:pvrThinkPadX230:rvnLENOVO:rn2324CTO:rvrWin8ProDPKTPG:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2324CTO
dmi.product.version: ThinkPad X230
dmi.sys.vendor: LENOVO
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