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[SCSI] zfcp: fix kfree handling in zfcp_init_device_setup

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The pointer that is allocated with kmalloc() is passed to strsep()
which modifies it. Later on the modified pointer value will be passed
to kfree. Save the original pointer and pass that one to kfree
instead.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Heiko Carstens 2009-10-13 10:44:07 +02:00 committed by James Bottomley
parent 37e6ba0072
commit d10c0858f6
1 changed files with 6 additions and 5 deletions
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9
drivers/s390/scsi/zfcp_aux.c
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@ -128,12 +128,13 @@ out_ccwdev:
static void __init zfcp_init_device_setup(char *devstr)
{
char *token;
char *str;
char *str, *str_saved;
char busid[ZFCP_BUS_ID_SIZE];
u64 wwpn, lun;
/* duplicate devstr and keep the original for sysfs presentation*/
str = kmalloc(strlen(devstr) + 1, GFP_KERNEL);
str_saved = kmalloc(strlen(devstr) + 1, GFP_KERNEL);
str = str_saved;
if (!str)
return;
@ -152,12 +153,12 @@ static void __init zfcp_init_device_setup(char *devstr)
if (!token || strict_strtoull(token, 0, (unsigned long long *) &lun))
goto err_out;
kfree(str);
kfree(str_saved);
zfcp_init_device_configure(busid, wwpn, lun);
return;
err_out:
kfree(str);
kfree(str_saved);
pr_err("%s is not a valid SCSI device\n", devstr);
}