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Merge tag 'jfs-6.3' of https://github.com/kleikamp/linux-shaggy

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Pull jfs update from Dave Kleikamp:
 "Just one simple sanity check"

* tag 'jfs-6.3' of https://github.com/kleikamp/linux-shaggy:
  fs/jfs: fix shift exponent db_agl2size negative
This commit is contained in:
Linus Torvalds
2023-03-01 08:47:19 -08:00
parent e103ecedce fad376fce0
commit 6e110580bc
1 changed files with 2 additions and 1 deletions
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3
fs/jfs/jfs_dmap.c
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@@ -193,7 +193,8 @@ int dbMount(struct inode *ipbmap)
bmp->db_agwidth = le32_to_cpu(dbmp_le->dn_agwidth);
bmp->db_agstart = le32_to_cpu(dbmp_le->dn_agstart);
bmp->db_agl2size = le32_to_cpu(dbmp_le->dn_agl2size);
if (bmp->db_agl2size > L2MAXL2SIZE - L2MAXAG) {
if (bmp->db_agl2size > L2MAXL2SIZE - L2MAXAG ||
bmp->db_agl2size < 0) {
err = -EINVAL;
goto err_release_metapage;
}