Messages in this thread | | | Date | Mon, 18 Jul 2022 16:21:27 +0200 | From | Greg KH <> | Subject | Re: [PATCH -next,v5] nvmem: core: Fix memleak in nvmem_register() |
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On Mon, Jul 18, 2022 at 08:39:49PM +0800, Gaosheng Cui wrote: > dev_set_name will alloc memory for nvmem->dev.kobj.name in > nvmem_register, when nvmem_validate_keepouts failed, nvmem's > memory will be freed and return, but nobody will free memory > for nvmem->dev.kobj.name, there will be memleak, so moving > nvmem_validate_keepouts() after device_register() and let > the device core deal with cleaning name in error cases. > > Fixes: de0534df9347 ("nvmem: core: fix error handling while validating keepout regions") > Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> > --- > drivers/nvmem/core.c | 15 ++++++--------- > 1 file changed, 6 insertions(+), 9 deletions(-) > > diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c > index 1e3c754efd0d..2164efd12ba9 100644 > --- a/drivers/nvmem/core.c > +++ b/drivers/nvmem/core.c > @@ -829,21 +829,18 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config) > nvmem->dev.groups = nvmem_dev_groups; > #endif > > - if (nvmem->nkeepout) { > - rval = nvmem_validate_keepouts(nvmem); > - if (rval) { > - ida_free(&nvmem_ida, nvmem->id); > - kfree(nvmem); > - return ERR_PTR(rval); > - } > - } > - > dev_dbg(&nvmem->dev, "Registering nvmem device %s\n", config->name); > > rval = device_register(&nvmem->dev); > if (rval) > goto err_put_device; > > + if (nvmem->nkeepout) { > + rval = nvmem_validate_keepouts(nvmem); > + if (rval) > + goto err_device_del; > + } > + > if (config->compat) { > rval = nvmem_sysfs_setup_compat(nvmem, config); > if (rval) > -- > 2.25.1 >
Hi,
This is the friendly patch-bot of Greg Kroah-Hartman. You have sent him a patch that has triggered this response. He used to manually respond to these common problems, but in order to save his sanity (he kept writing the same thing over and over, yet to different people), I was created. Hopefully you will not take offence and will fix the problem in your patch and resubmit it so that it can be accepted into the Linux kernel tree.
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