erofs: fix potential overflow calculating xattr_isize

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[ Upstream commit 1b3567a196 ]

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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Jingbo Xu 2023-04-14 14:18:10 +08:00 • committed by Greg Kroah-Hartman

parent 50f1c1fba0

commit 0955b8eac3

1 changed files with 1 additions and 1 deletions

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fs/erofs/internal.h

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