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ext4_fs: fix possible overflow
[lwext4.git]
/
include
/
ext4_fs.h
diff --git
a/include/ext4_fs.h
b/include/ext4_fs.h
index b598c5e1430ad270c7c5e79ccf7dc638ef566ca6..9653f47878c514da1804088f3fb7d348d09851ce 100644
(file)
--- a/
include/ext4_fs.h
+++ b/
include/ext4_fs.h
@@
-94,7
+94,7
@@
struct ext4_inode_ref {
static inline uint32_t ext4_fs_addr_to_idx_bg(struct ext4_sblock *s,
ext4_fsblk_t baddr)
{
- if (ext4_get32(s, first_data_block))
+ if (ext4_get32(s, first_data_block)
&& baddr
)
baddr--;
return baddr % ext4_get32(s, blocks_per_group);