uprobes/tracing: Fix dentry/mount leak in create_trace_uprobe()
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>
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@ -253,16 +253,18 @@ static int create_trace_uprobe(int argc, char **argv)
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if (ret)
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if (ret)
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goto fail_address_parse;
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goto fail_address_parse;
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ret = kstrtoul(arg, 0, &offset);
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if (ret)
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goto fail_address_parse;
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inode = igrab(path.dentry->d_inode);
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inode = igrab(path.dentry->d_inode);
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path_put(&path);
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if (!S_ISREG(inode->i_mode)) {
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if (!S_ISREG(inode->i_mode)) {
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ret = -EINVAL;
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ret = -EINVAL;
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goto fail_address_parse;
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goto fail_address_parse;
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}
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}
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ret = kstrtoul(arg, 0, &offset);
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if (ret)
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goto fail_address_parse;
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argc -= 2;
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argc -= 2;
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argv += 2;
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argv += 2;
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