Hi Bart, Thanks for your answer.
I commit the code again with the title "segment faulty occured in add_feature()", please review. Thanks, Wei huang. Bart Van Assche <[email protected]> 2016-10-28 23:14 收件人 <[email protected]>, Christophe Varoqui <[email protected]>, 抄送 <[email protected]>, <[email protected]>, <[email protected]> 主题 Re: [dm-devel] [PATCH] add_feature: coredump On 10/13/2016 07:08 PM, [email protected] wrote: > From: "wei.huang" <[email protected]> > > Problem: > when we configure device like vendor is COMPELNT in multipath.conf, multipathd will be coredump. > > Reasons: > some vonders are not configured features in default_hw. In add_feature, strstr's first parameter *f maybe null. > > Signed-off-by: wei.huang <[email protected]> > --- > libmultipath/structs.c | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/libmultipath/structs.c b/libmultipath/structs.c > index fee58e5..41e142f 100644 > --- a/libmultipath/structs.c > +++ b/libmultipath/structs.c > @@ -520,6 +520,20 @@ add_feature (char **f, char *n) > if (!n || *n == '0') > return 0; > > + /* default feature is null */ > + if(!*f) > + { > + l = strlen("1 ") + strlen(n) + 1; > + t = MALLOC(l); > + if (!t) > + return 1; > + > + snprintf(t, l, "1 %s", n); > + *f = t; > + > + return 0; > + } > + > /* Check if feature is already present */ > if (strstr(*f, n)) > return 0; > Hello Wei Huang, Please use asprintf() instead of open coding it and please also make the title of your patch comprehensible. Your patch avoids that multipathd triggers a core dump for a certain vendor name but that's not clear from the "add_feature: coredump". Thanks, Bart.
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