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pstore/ram: Fix error return code in ramoops_probe()

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[ Upstream commit e1fce564900f8734edf15b87f028c57e14f6e28d ]

In the if (dev_of_node(dev) && !pdata) path, the "err" may be assigned a
value of 0, so the error return code -EINVAL may be incorrectly set
to 0. To fix set valid return code before calling to goto.

Fixes: 35da60941e ("pstore/ram: add Device Tree bindings")
Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/1669969374-46582-1-git-send-email-wangyufen@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wang Yufen 2022-12-02 16:22:54 +08:00 • committed by Greg Kroah-Hartman
commit 2de791ff6f
1 changed files with 2 additions and 0 deletions
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2
fs/pstore/ram.c
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@ -759,6 +759,7 @@ static int ramoops_probe(struct platform_device *pdev)
/* Make sure we didn't get bogus platform data pointer. */
if (!pdata) {
pr_err("NULL platform data\n");
err = -EINVAL;
goto fail_out;
}
@ -766,6 +767,7 @@ static int ramoops_probe(struct platform_device *pdev)
!pdata->ftrace_size && !pdata->pmsg_size)) {
pr_err("The memory size and the record/console size must be "
"non-zero\n");
err = -EINVAL;
goto fail_out;
}