diff options
| author | Tony Camuso <tcamuso@redhat.com> | 2019-04-09 15:20:03 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-16 19:41:23 +0200 |
| commit | 9e4fd5e0b81a8f963b1636b19c964ad9d0d3b36e (patch) | |
| tree | 08a56ec68496d3ddb0a89ccc773698f8df40e2a0 /drivers/char | |
| parent | 7d4d8683e9251254b33497f3eeb8035ecdc11e32 (diff) | |
ipmi: ipmi_si_hardcode.c: init si_type array to fix a crash
[ Upstream commit a885bcfd152f97b25005298ab2d6b741aed9b49c ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/ipmi/ipmi_si_hardcode.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/char/ipmi/ipmi_si_hardcode.c b/drivers/char/ipmi/ipmi_si_hardcode.c index 9ae2405c28bb..0c28e872ad3a 100644 --- a/drivers/char/ipmi/ipmi_si_hardcode.c +++ b/drivers/char/ipmi/ipmi_si_hardcode.c @@ -200,6 +200,8 @@ 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') { |