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ipmi: ipmi_si_hardcode.c: init si_type array to fix a crash

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The intended behavior of function ipmi_hardcode_init_one() is to default
to kcs interface when no type argument is presented when initializing
ipmi with hard coded addresses.

However, the array of char pointers allocated on the stack by function
ipmi_hardcode_init() was not inited to zeroes, so it contained stack
debris.

Consequently, passing the cruft stored in this array to function
ipmi_hardcode_init_one() caused a crash when it was unable to detect
that the char * being passed was nonsense and tried to access the
address specified by the bogus pointer.

The fix is simply to initialize the si_type array to zeroes, so if
there were no type argument given to at the command line, function
ipmi_hardcode_init_one() could properly default to the kcs interface.

Signed-off-by: Tony Camuso <tcamuso@redhat.com>
Message-Id: <1554837603-40299-1-git-send-email-tcamuso@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
This commit is contained in:
Tony Camuso 2019-04-09 15:20:03 -04:00 committed by Corey Minyard
parent bd2e98b351
commit a885bcfd15
1 changed files with 2 additions and 0 deletions
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2
drivers/char/ipmi/ipmi_si_hardcode.c
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@ -118,6 +118,8 @@ void __init ipmi_hardcode_init(void)
char *str;
char *si_type[SI_MAX_PARMS];
memset(si_type, 0, sizeof(si_type));
/* Parse out the si_type string into its components. */
str = si_type_str;
if (*str != '\0') {