Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-21 19:41:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

kyber: Replace strlcpy with strscpy

Browse Source 
strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230703172159.3668349-2-azeemshaikh38@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Azeem Shaikh 2023-07-03 17:21:58 +00:00 committed by Jens Axboe
parent fdf0eaf114
commit 222f58ac68
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
include/trace/events/kyber.h
View File

@ -31,8 +31,8 @@ TRACE_EVENT(kyber_latency,
TP_fast_assign(
__entry->dev = dev;
strlcpy(__entry->domain, domain, sizeof(__entry->domain));
strlcpy(__entry->type, type, sizeof(__entry->type));
strscpy(__entry->domain, domain, sizeof(__entry->domain));
strscpy(__entry->type, type, sizeof(__entry->type));
__entry->percentile = percentile;
__entry->numerator = numerator;
__entry->denominator = denominator;
@ -59,7 +59,7 @@ TRACE_EVENT(kyber_adjust,
TP_fast_assign(
__entry->dev = dev;
strlcpy(__entry->domain, domain, sizeof(__entry->domain));
strscpy(__entry->domain, domain, sizeof(__entry->domain));
__entry->depth = depth;
),
@ -81,7 +81,7 @@ TRACE_EVENT(kyber_throttled,
TP_fast_assign(
__entry->dev = dev;
strlcpy(__entry->domain, domain, sizeof(__entry->domain));
strscpy(__entry->domain, domain, sizeof(__entry->domain));
),
TP_printk("%d,%d %s", MAJOR(__entry->dev), MINOR(__entry->dev),