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| author | Gao Xiang <gaoxiang25@huawei.com> | 2019-10-09 18:05:53 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-11 18:36:57 +0200 |
| commit | 4c87d287c62a6d44f9afbe86911730b44e8a5946 (patch) | |
| tree | 70be701228012a2989d26c62435c79c15f17f97d /lib/mpi/mpiutil.c | |
| parent | 5bb124e1d18e984901039bec4ff94dd40dea8858 (diff) | |
staging: erofs: avoid endless loop of invalid lookback distance 0
commit 598bb8913d015150b7734b55443c0e53e7189fc7 upstream.
As reported by erofs-utils fuzzer, Lookback distance should
be a positive number, so it should be actually looked back
rather than spinning.
Fixes: 02827e1796b3 ("staging: erofs: add erofs_map_blocks_iter")
Cc: <stable@vger.kernel.org> # 4.19+
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Link: https://lore.kernel.org/r/20190819103426.87579-7-gaoxiang25@huawei.com
[ Gao Xiang: Since earlier kernels don't define EFSCORRUPTED,
let's use EIO instead. ]
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/mpi/mpiutil.c')
0 files changed, 0 insertions, 0 deletions