xwlan widget / wlanstat crash on startup with damage profile

[andib]

xwlan widget or wlanstat crashes on startup when profile data is somehow corrupted. No clue why profile got damaged. Tracked down to be a problem when the readprofile code tries to read from memory which does not belong to the current process. Popuplog.os2 entry -

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05-22-2013 11:36:21 SYS3175 PID 052c TID 0001 Slot 00d9
E:\_WORK\XWLAN\TRUNK\TEMP\WLANSTAT.EXE
c0000005
0002d866
P1=00000001 P2=25b83e66 P3=XXXXXXXX P4=XXXXXXXX
EAX=25b83e66 EBX=00000000 ECX=00501010 EDX=000d2e58
ESI=1c79fb18 EDI=1c7976b0
DS=0053 DSACC=f0f3 DSLIM=ffffffff
ES=0053 ESACC=f0f3 ESLIM=ffffffff
FS=150b FSACC=00f2 FSLIM=00000030
GS=0000 GSACC= GSLIM=
CS:EIP=005b:0002d866 CSACC=f0df CSLIM=ffffffff
SS:ESP=0053:000d260c SSACC=f0f3 SSLIM=ffffffff
EBP=000d2a94 FLG=00212283

WLANSTAT.EXE 0002:0000d866

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Work around - delete the damaged profile from os2.ini with an ini editor. Of course you've to know which one is broken. For this you can make a debug build of wlanstat, fire up idebug, step through profile.c and find the problematic one or delete every one :-)

Better solution - use DosQueryMem (thanks Dmik for the hint) and check data before reading.