A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-06 11:54:14 -04:00
Code Issues Projects Releases Packages Wiki Activity

udf: Fix use of check_add_overflow() with mixed type arguments

Browse source 
Commit ebbe26fd54a9 "udf: Avoid excessive partition lengths"
introduced a use of check_add_overflow() with argument types u32,
size_t, and u32 *.

This was backported to the 5.x stable branches, where in 64-bit
configurations it results in a build error (with older compilers) or a
warning.  Before commit d219d2a9a92e "overflow: Allow mixed type
arguments", which went into Linux 6.1, mixed type arguments are not
supported.  That cannot be backported to 5.4 or 5.10 as it would raise
the minimum compiler version for these kernel versions.

Add a cast to make the argument types compatible.

Fixes: 1497a4484c ("udf: Avoid excessive partition lengths")
Fixes: 551966371e17 ("udf: Avoid excessive partition lengths")
Signed-off-by: Ben Hutchings <benh@debian.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ben Hutchings 2025-02-24 17:00:27 +01:00 • committed by Greg Kroah-Hartman
commit 08c32d6729
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
fs/udf/super.c
View file

@ -1160,7 +1160,7 @@ static int udf_fill_partdesc_info(struct super_block *sb,
map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
/* Check whether math over bitmap won't overflow. */
if (check_add_overflow(map->s_partition_len,
sizeof(struct spaceBitmapDesc) << 3,
(u32)(sizeof(struct spaceBitmapDesc) << 3),
&sum)) {
udf_err(sb, "Partition %d is too long (%u)\n", p_index,
map->s_partition_len);