From: "tang.wenji" <tang.we...@zte.com.cn>
Segment faulty occured when executing "mpathpersist -i -k
/dev/mapper/mpath1" command.The reason is that an uninitialized global
variable conf is used in mpath_persistent_reserve_in(). The same
problem also exists in mpath_persistent_reserve_out().
Signed-off-by: tang.wenji <tang.we...@zte.com.cn>
---
libmpathpersist/mpath_persist.c | 22 +++++++++++++++++++---
libmpathpersist/mpathpr.h | 4 ----
2 files changed, 19 insertions(+), 7 deletions(-)
diff --git a/libmpathpersist/mpath_persist.c b/libmpathpersist/mpath_persist.c
index faea2b7..982c795 100644
--- a/libmpathpersist/mpath_persist.c
+++ b/libmpathpersist/mpath_persist.c
@@ -35,7 +35,6 @@
#define __STDC_FORMAT_MACROS 1
struct udev *udev;
-struct config *conf;
struct config *
mpath_lib_init (struct udev *udev)
@@ -79,6 +78,7 @@ updatepaths (struct multipath * mpp)
int i, j;
struct pathgroup * pgp;
struct path * pp;
+ struct config *conf;
if (!mpp->pg)
return 0;
@@ -98,16 +98,24 @@ updatepaths (struct multipath * mpp)
continue;
}
pp->mpp = mpp;
+ conf = get_multipath_config();
pathinfo(pp, conf, DI_ALL);
+ put_multipath_config(conf);
continue;
}
pp->mpp = mpp;
if (pp->state == PATH_UNCHECKED ||
- pp->state == PATH_WILD)
+ pp->state == PATH_WILD) {
+ conf = get_multipath_config();
pathinfo(pp, conf, DI_CHECKER);
+ put_multipath_config(conf);
+ }
- if (pp->priority == PRIO_UNDEF)
+ if (pp->priority == PRIO_UNDEF) {
+ conf = get_multipath_config();
pathinfo(pp, conf, DI_PRIO);
+ put_multipath_config(conf);
+ }
}
}
return 0;
@@ -160,8 +168,11 @@ int mpath_persistent_reserve_in (int fd, int rq_servact,
int map_present;
int major, minor;
int ret;
+ struct config *conf;
+ conf = get_multipath_config();
conf->verbosity = verbose;
+ put_multipath_config(conf);
if (fstat( fd, &info) != 0){
condlog(0, "stat error %d", fd);
@@ -253,8 +264,11 @@ int mpath_persistent_reserve_out ( int fd, int rq_servact,
int rq_scope,
int j;
unsigned char *keyp;
uint64_t prkey;
+ struct config *conf;
+ conf = get_multipath_config();
conf->verbosity = verbose;
+ put_multipath_config(conf);
if (fstat( fd, &info) != 0){
condlog(0, "stat error fd=%d", fd);
@@ -321,7 +335,9 @@ int mpath_persistent_reserve_out ( int fd, int rq_servact,
int rq_scope,
goto out1;
}
+ conf = get_multipath_config();
select_reservation_key(conf, mpp);
+ put_multipath_config(conf);
switch(rq_servact)
{
diff --git a/libmpathpersist/mpathpr.h b/libmpathpersist/mpathpr.h
index 056c547..e6c2ded 100644
--- a/libmpathpersist/mpathpr.h
+++ b/libmpathpersist/mpathpr.h
@@ -25,10 +25,6 @@ struct threadinfo {
struct prout_param param;
};
-
-extern struct config *conf;
-
-
int prin_do_scsi_ioctl(char * dev, int rq_servact, struct prin_resp * resp,
int noisy);
int prout_do_scsi_ioctl( char * dev, int rq_servact, int rq_scope,
unsigned int rq_type, struct prout_param_descriptor *paramp,
int noisy);
--
2.8.1.windows.1
--
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