Messages in this thread Patch in this message | | | Date | Sat, 27 Aug 2011 13:00:45 +0300 | From | Dan Carpenter <> | Subject | [patch] rapidio: potential null deref in rio_setup_device() |
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The "goto cleanup" path can dereference "rswitch" which is NULL here.
Signed-off-by: Dan Carpenter <error27@gmail.com> --- This is sort of embarrassing, I've patched this function before but missed this. Hopefully it's right now.
diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c index 0914f49..882cef9 100644 --- a/drivers/rapidio/rio-scan.c +++ b/drivers/rapidio/rio-scan.c @@ -432,7 +432,7 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net, /* Assign component tag to device */ if (next_comptag >= 0x10000) { pr_err("RIO: Component Tag Counter Overflow\n"); - goto cleanup; + goto out_rdev; } rio_mport_write_config_32(port, destid, hopcount, RIO_COMPONENT_TAG_CSR, next_comptag); @@ -518,7 +518,7 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net, cleanup: if (rio_is_switch(rdev)) kfree(rswitch->route_table); - +out_rdev: kfree(rdev); return NULL; }
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