This is a note to let you know that I've just added the patch titled scsi: lpfc: Fix some error codes in debugfs to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: scsi-lpfc-fix-some-error-codes-in-debugfs.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 19f1bc7edf0f97186810e13a88f5b62069d89097 Mon Sep 17 00:00:00 2001 From: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Date: Fri, 12 Mar 2021 10:42:11 +0300 Subject: scsi: lpfc: Fix some error codes in debugfs From: Dan Carpenter <dan.carpenter@xxxxxxxxxx> commit 19f1bc7edf0f97186810e13a88f5b62069d89097 upstream. If copy_from_user() or kstrtoull() fail then the correct behavior is to return a negative error code. Link: https://lore.kernel.org/r/YEsbU/UxYypVrC7/@mwanda Fixes: f9bb2da11db8 ("[SCSI] lpfc 8.3.27: T10 additions for SLI4") Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/scsi/lpfc/lpfc_debugfs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/scsi/lpfc/lpfc_debugfs.c +++ b/drivers/scsi/lpfc/lpfc_debugfs.c @@ -2217,7 +2217,7 @@ lpfc_debugfs_dif_err_write(struct file * memset(dstbuf, 0, 33); size = (nbytes < 32) ? nbytes : 32; if (copy_from_user(dstbuf, buf, size)) - return 0; + return -EFAULT; if (dent == phba->debug_InjErrLBA) { if ((buf[0] == 'o') && (buf[1] == 'f') && (buf[2] == 'f')) @@ -2225,7 +2225,7 @@ lpfc_debugfs_dif_err_write(struct file * } if ((tmp == 0) && (kstrtoull(dstbuf, 0, &tmp))) - return 0; + return -EINVAL; if (dent == phba->debug_writeGuard) phba->lpfc_injerr_wgrd_cnt = (uint32_t)tmp; Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are queue-5.4/scsi-lpfc-fix-some-error-codes-in-debugfs.patch