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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: 4342306f0f ("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>
This commit is contained in:
Konstantin Komarov 2021-09-29 19:29:52 +03:00
parent dbf59e2a33
commit 35afb70dcf
No known key found for this signature in database
GPG Key ID: A9B0331F832407B6
1 changed files with 3 additions and 1 deletions
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4
fs/ntfs3/frecord.c
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@ -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;
}
}