Re: [PATCH] staging: gpib: ni_usb: Move kfree after last use of in_data

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Op 19-10-2024 om 10:00 schreef Greg KH:
On Tue, Oct 15, 2024 at 10:45:58PM +0200, Kees Bakker wrote:
In ni_usb_read() there was a kfree before the last use of in_data.

Signed-off-by: Kees Bakker <kees@xxxxxxxxxxxx>
---
  drivers/staging/gpib/ni_usb/ni_usb_gpib.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/gpib/ni_usb/ni_usb_gpib.c b/drivers/staging/gpib/ni_usb/ni_usb_gpib.c
index 1da263676f2a..75f39e1f3ed1 100644
--- a/drivers/staging/gpib/ni_usb/ni_usb_gpib.c
+++ b/drivers/staging/gpib/ni_usb/ni_usb_gpib.c
@@ -690,12 +690,12 @@ static int ni_usb_read(gpib_board_t *board, uint8_t *buffer, size_t length,
  		kfree(in_data);
  		return parse_retval;
  	}
-	kfree(in_data);
  	if (actual_length != length - status.count) {
  		pr_err("%s: actual_length=%i expected=%li\n",
  		       __func__, actual_length, (long)(length - status.count));
  		ni_usb_dump_raw_block(in_data, usb_bytes_read);
  	}
+	kfree(in_data);
  	switch (status.error_code) {
  	case NIUSB_NO_ERROR:
  		retval = 0;
Does not apply to my tree, what branch did you make this against?
It was already done in commit b0a7dfeb7df ("staging: gpib: Move free after the variable use has been completed")

thanks,

greg k-h





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