Re: [PATCH] mtd: intel-dg: Fix runtime PM error path in probe
Raag Jadav <[email protected]>
| Newsgroups | org.infradead.lists.linux-mtd,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On Sun, Jul 05, 2026 at 11:31:07AM +0800, Guangshuo Li wrote:
> intel_dg_mtd_probe() allocates region names before enabling runtime PM
> and before calling pm_runtime_resume_and_get().
>
> If kasprintf() fails while building a region name, the error path jumps
> to err, which calls pm_runtime_put(). At that point there has not been a
> successful pm_runtime_resume_and_get() call to balance, so the runtime PM
> usage count can underflow.
>
> Jump to err_norpm from the kasprintf() failure path, as the runtime PM
> reference has not been acquired yet.
>
> Fixes: 779c59274d03 ("mtd: intel-dg: Fix accessing regions before setting nregions")
> Signed-off-by: Guangshuo Li <[email protected]>
Reviewed-by: Raag Jadav <[email protected]>
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