0000056: Memory bug when loading module in Xorg - BusyBox Bug and Patch Tracking

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Severity

Reproducibility

Date Submitted

Last Update

0000056

[uClibc] Architecture Specific

crash

always

01-21-05 22:21

10-08-08 04:30

Reporter

thintux

View Status

public

Assigned To

uClibc

Priority

normal

Resolution

open

Status

feedback

Product Version

0.9.27

Summary

0000056: Memory bug when loading module in Xorg

Description

I recently updated from 0.9.24 to 0.9.27.
I downloaded and compiled Xorg 6.8.1. I didn't received any errors during the build. The problem is that when I try to start X, the computer starts to get really slow and the Xorg binary takes all available memory. The binary use 100M(RES) and 700M(VIRT).
The problem starts when X try to load the first module(bitmap). Instead of loading the module it starts to use a lot of "brk"'s. I received > 50000 brk's during an execution time of a few seconds.

Additional Information

Incorrect version with uclibc 0.9.27

write(0, "(II) Module ABI versions:\n", 26) = 26
write(0, "\tX.Org ANSI C Emulation: 0.2\n", 29) = 29
write(0, "\tX.Org Video Driver: 0.7\n", 25) = 25
write(0, "\tX.Org XInput driver : 0.4\n", 27) = 27
write(0, "\tX.Org Server Extension : 0.2\n", 30) = 30
write(0, "\tX.Org Font Renderer : 0.4\n", 27) = 27
write(0, "(II) Loader running on linux\n", 29) = 29
write(0, "(II) LoadModule: \"bitmap\"", 25) = 25
brk(0x820c000) = 0x820c000
brk(0x820d000) = 0x820d000
brk(0x820e000) = 0x820e000
brk(0x820f000) = 0x820f000
brk(0x8210000) = 0x8210000
brk(0x8211000) = 0x8211000

Correct version with uclibc-0.9.24:

write(0, "(II) Module ABI versions:\n", 26) = 26
write(0, "\tX.Org ANSI C Emulation: 0.2\n", 29) = 29
write(0, "\tX.Org Video Driver: 0.7\n", 25) = 25
write(0, "\tX.Org XInput driver : 0.4\n", 27) = 27
write(0, "\tX.Org Server Extension : 0.2\n", 30) = 30
write(0, "\tX.Org Font Renderer : 0.4\n", 27) = 27
write(0, "(II) Loader running on linux\n", 29) = 29
write(0, "(II) LoadModule: \"bitmap\"", 25) = 25
write(0, "\n", 1) = 1
stat("/usr/X11R6/lib/modules/drivers/linux/", {st_mode=S_IFDIR|0755, st_size=80,
...}) = 0
stat("/usr/X11R6/lib/modules/drivers/linux/", {st_mode=S_IFDIR|0755, st_size=80,
...}) = 0
open("/usr/X11R6/lib/modules/drivers/linux/", O_RDONLY) = 4
fcntl(4, F_SETFD, FD_CLOEXEC) = 0
brk(0x8207000) = 0x8207000
getdents(4, /* 3 entries */, 3933) = 48

Attached Files

Relationships

Notes
(0002822) khem 10-13-07 11:08	Can you verify this problem with latest release or svn snapshot.

(0013104) bernhardf 10-08-08 04:30	Also, which malloc imple do you use?

Issue History
Date Modified	Username	Field	Change
01-21-05 22:21	thintux	New Issue
03-16-05 11:53	andersen	Assigned To	andersen => uClibc
10-13-07 11:08	khem	Note Added: 0002822
10-08-08 04:30	bernhardf	Note Added: 0013104
10-08-08 04:30	bernhardf	Status	assigned => feedback