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| author | Konstantin Komarov <almaz.alexandrovich@paragon-software.com> | 2021-09-29 18:29:52 +0200 |
|---|---|---|
| committer | Konstantin Komarov <almaz.alexandrovich@paragon-software.com> | 2021-09-30 18:58:25 +0200 |
| commit | 35afb70dcfe4eb445060dd955e5b67d962869ce5 (patch) | |
| tree | 4221491228a97b4c37f81a9f16177c1608190895 /fs/ntfs3 | |
| parent | fs/ntfs3: Refactoring of ntfs_init_from_boot (diff) | |
| download | linux-35afb70dcfe4eb445060dd955e5b67d962869ce5.tar.xz linux-35afb70dcfe4eb445060dd955e5b67d962869ce5.zip | |
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.c | 4 |
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; } } |