You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
41 lines
1.4 KiB
41 lines
1.4 KiB
commit 9f2b100d6705b9bbb25206b53e80d7759644e06e
|
|
Author: H.J. Lu <hjl.tools@gmail.com>
|
|
Date: Sat May 25 05:13:41 2024 -0700
|
|
|
|
parse_fdinfo: Don't advance pointer twice [BZ #31798]
|
|
|
|
pidfd_getpid.c has
|
|
|
|
/* Ignore invalid large values. */
|
|
if (INT_MULTIPLY_WRAPV (10, n, &n)
|
|
|| INT_ADD_WRAPV (n, *l++ - '0', &n))
|
|
return -1;
|
|
|
|
For GCC older than GCC 7, INT_ADD_WRAPV(a, b, r) is defined as
|
|
|
|
_GL_INT_OP_WRAPV (a, b, r, +, _GL_INT_ADD_RANGE_OVERFLOW)
|
|
|
|
and *l++ - '0' is evaluated twice. Fix BZ #31798 by moving "l++" out of
|
|
the if statement. Tested with GCC 6.4 and GCC 14.1.
|
|
|
|
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
|
|
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
|
|
(cherry picked from commit f981bf6b9db87e0732b46bfe92fdad4d363225e8)
|
|
|
|
diff --git a/sysdeps/unix/sysv/linux/pidfd_getpid.c b/sysdeps/unix/sysv/linux/pidfd_getpid.c
|
|
index 8567b413dd2c210b..30025e5863f7b956 100644
|
|
--- a/sysdeps/unix/sysv/linux/pidfd_getpid.c
|
|
+++ b/sysdeps/unix/sysv/linux/pidfd_getpid.c
|
|
@@ -74,8 +74,10 @@ parse_fdinfo (const char *l, void *arg)
|
|
|
|
/* Ignore invalid large values. */
|
|
if (INT_MULTIPLY_WRAPV (10, n, &n)
|
|
- || INT_ADD_WRAPV (n, *l++ - '0', &n))
|
|
+ || INT_ADD_WRAPV (n, *l - '0', &n))
|
|
return -1;
|
|
+
|
|
+ l++;
|
|
}
|
|
|
|
/* -1 indicates that the process is terminated. */
|