scsi: ufs: debugfs: Reserve space for a string terminator

ufs_saved_err_write() copies user input into a zero-initialized stack
buffer and passes it to kstrtoint(). A write that fills the entire buffer
overwrites its only terminator.

Reject an input whose length leaves no room for the trailing NUL.

Fixes: 7340faae9474 ("scsi: ufs: core: Add debugfs attributes for triggering the UFS EH")
Signed-off-by: Li Qiang <liqiang01@kylinos.cn>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Link: https://patch.msgid.link/20260717153914.26321-7-liqiang01@kylinos.cn
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

0 files changed, 0 insertions, 0 deletions