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Date: Wed, 29 Sep 2021 19:35:43 +0300 From: Konstantin Komarov <almaz.alexandrovich@...agon-software.com> To: <ntfs3@...ts.linux.dev> CC: <linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org> Subject: [PATCH] fs/ntfs3: Check for NULL if ATTR_EA_INFO is incorrect This can be reason for reported panic. Fixes: 4342306f0f0d ("fs/ntfs3: Add file operations and implementation") Signed-off-by: Konstantin Komarov <almaz.alexandrovich@...agon-software.com> --- fs/ntfs3/frecord.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) 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; } } -- 2.33.0
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