From: DaeMyung Kang Date: Sat, 30 May 2026 14:35:11 +0000 (+0900) Subject: ntfs: reinit search context before volume information lookup X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=45dd046ced0f5982a6d64ca449de3a61f5f15669;p=thirdparty%2Flinux.git ntfs: reinit search context before volume information lookup On mount the volume inode is searched for $VOLUME_NAME and then, reusing the same search context, for $VOLUME_INFORMATION. The $VOLUME_NAME lookup is optional and its result is otherwise ignored. Once lookup-time validation can reject a corrupt $VOLUME_NAME with -EIO, the search context is left in an undefined state: ntfs_attr_find() documents that on an actual error @ctx->attr is undefined. Continuing the $VOLUME_INFORMATION search from that context is not contractually valid. Reinitialize the search context before the $VOLUME_INFORMATION lookup so it always starts from a well-defined state regardless of the $VOLUME_NAME lookup outcome. Cc: stable@vger.kernel.org # v7.1 Signed-off-by: DaeMyung Kang Signed-off-by: Namjae Jeon --- diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c index 081a29583868..ca882e946a22 100644 --- a/fs/ntfs/super.c +++ b/fs/ntfs/super.c @@ -1461,6 +1461,7 @@ iput_volume_failed: vol->volume_label = NULL; } + ntfs_attr_reinit_search_ctx(ctx); if (ntfs_attr_lookup(AT_VOLUME_INFORMATION, NULL, 0, 0, 0, NULL, 0, ctx) || ctx->attr->non_resident || ctx->attr->flags) { ntfs_attr_put_search_ctx(ctx);