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uprobes/tracing: Fix dentry/mount leak in create_trace_uprobe()

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create_trace_uprobe() does kern_path() to find ->d_inode, but forgets
to do path_put(). We can do this right after igrab().

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
This commit is contained in:
Oleg Nesterov 2013-01-27 18:20:45 +01:00
parent e8440c1458
commit 84d7ed799f
1 changed files with 6 additions and 4 deletions
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10
kernel/trace/trace_uprobe.c
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@ -253,16 +253,18 @@ static int create_trace_uprobe(int argc, char **argv)
if (ret)
goto fail_address_parse;
ret = kstrtoul(arg, 0, &offset);
if (ret)
goto fail_address_parse;
inode = igrab(path.dentry->d_inode);
path_put(&path);
if (!S_ISREG(inode->i_mode)) {
ret = -EINVAL;
goto fail_address_parse;
}
ret = kstrtoul(arg, 0, &offset);
if (ret)
goto fail_address_parse;
argc -= 2;
argv += 2;