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erofs: fix potential overflow calculating xattr_isize
[ Upstream commit1b3567a196
] Given on-disk i_xattr_icount is 16 bits and xattr_isize is calculated from i_xattr_icount multiplying 4, xattr_isize has a theoretical maximum of 256K (64K * 4). Thus declare xattr_isize as unsigned int to avoid the potential overflow. Fixes:bfb8674dc0
("staging: erofs: add erofs in-memory stuffs") Signed-off-by: Jingbo Xu <jefflexu@linux.alibaba.com> Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com> Reviewed-by: Chao Yu <chao@kernel.org> Link: https://lore.kernel.org/r/20230414061810.6479-1-jefflexu@linux.alibaba.com Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -226,7 +226,7 @@ struct erofs_inode {
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unsigned char datalayout;
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unsigned char inode_isize;
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unsigned short xattr_isize;
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unsigned int xattr_isize;
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unsigned int xattr_shared_count;
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unsigned int *xattr_shared_xattrs;
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