| Message ID | 20190131131556.GB19807@kroah.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ath10k: do not return invalid pointers as a *dentry | expand |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote: > When calling debugfs functions, they can now return error values if > something went wrong. If that happens, return a NULL as a *dentry to > the relay core instead of passing it an illegal pointer. > > The relay core should be able to handle an illegal pointer, but add this > check to be safe. > > Cc: Kalle Valo <kvalo@codeaurora.org> > Cc: ath10k@lists.infradead.org > Cc: linux-wireless@vger.kernel.org > Cc: netdev@vger.kernel.org > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Patch applied to ath-next branch of ath.git, thanks. 0b38b4b44516 ath10k: do not return invalid pointers as a *dentry
diff --git a/drivers/net/wireless/ath/ath10k/spectral.c b/drivers/net/wireless/ath/ath10k/spectral.c index 653b6d013207..4a7fa3e4e99f 100644 --- a/drivers/net/wireless/ath/ath10k/spectral.c +++ b/drivers/net/wireless/ath/ath10k/spectral.c @@ -494,6 +494,9 @@ static struct dentry *create_buf_file_handler(const char *filename, buf_file = debugfs_create_file(filename, mode, parent, buf, &relay_file_operations); + if (IS_ERR(buf_file)) + return NULL; + *is_global = 1; return buf_file; }
When calling debugfs functions, they can now return error values if something went wrong. If that happens, return a NULL as a *dentry to the relay core instead of passing it an illegal pointer. The relay core should be able to handle an illegal pointer, but add this check to be safe. Cc: Kalle Valo <kvalo@codeaurora.org> Cc: ath10k@lists.infradead.org Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/wireless/ath/ath10k/spectral.c | 3 +++ 1 file changed, 3 insertions(+)