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authorKonstantin Komarov <almaz.alexandrovich@paragon-software.com>2021-09-29 19:29:52 +0300
committerKonstantin Komarov <almaz.alexandrovich@paragon-software.com>2021-09-30 19:58:25 +0300
commit35afb70dcfe4eb445060dd955e5b67d962869ce5 (patch)
tree4221491228a97b4c37f81a9f16177c1608190895 /fs/ntfs3
parentdbf59e2a33d2cb5ae0534523fd3d6d8bda808be8 (diff)
fs/ntfs3: Check for NULL if ATTR_EA_INFO is incorrect
This can be reason for reported panic https://lore.kernel.org/ntfs3/f9de5807-2311-7374-afb0-bc5dffb522c0@gmail.com/ Fixes: 4342306f0f0d ("fs/ntfs3: Add file operations and implementation") Reported-by: Mohammad Rasim <mohammad.rasim96@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Diffstat (limited to 'fs/ntfs3')
-rw-r--r--fs/ntfs3/frecord.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 9a53f809576d..007602badd90 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -3080,7 +3080,9 @@ static bool ni_update_parent(struct ntfs_inode *ni, struct NTFS_DUP_INFO *dup,
const struct EA_INFO *info;
info = resident_data_ex(attr, sizeof(struct EA_INFO));
- dup->ea_size = info->size_pack;
+ /* If ATTR_EA_INFO exists 'info' can't be NULL. */
+ if (info)
+ dup->ea_size = info->size_pack;
}
}