mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-01 22:54:01 +00:00
Code Issues Releases Wiki Activity

soc: qcom: cmd-db: Drop NUL bytes from debugfs output

Browse source 
The debugfs dump of Command DB relies uses %*pEp to print the resource
identifiers, with escaping of non-printable characters.
But p (ESCAPE_NP) does not escape NUL characters, so for identifiers
less than 8 bytes in length the output will retain these.

This does not cause an issue while looking at the dump in the terminal
(no known complaints at least), but when programmatically consuming the
debugfs output the extra characters are unwanted.

Change the fixed 8-byte sizeof() to a dynamic strnlen() to avoid
printing these NUL characters.

Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230620213703.283583-1-quic_bjorande@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
This commit is contained in:
Bjorn Andersson 2023-06-20 14:37:03 -07:00 committed by Bjorn Andersson
parent 98c8b3efac
commit d4600cbd5b
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/soc/qcom/cmd-db.c
View file

@ -284,7 +284,7 @@ static int cmd_db_debugfs_dump(struct seq_file *seq, void *p)
ent = rsc_to_entry_header(rsc);
for (j = 0; j < le16_to_cpu(rsc->cnt); j++, ent++) {
seq_printf(seq, "0x%05x: %*pEp", le32_to_cpu(ent->addr),
(int)sizeof(ent->id), ent->id);
(int)strnlen(ent->id, sizeof(ent->id)), ent->id);
len = le16_to_cpu(ent->len);
if (len) {