| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.14 332/849] erofs: dont trigger WARN() when decompression fails | Date | Mon, 15 Nov 2021 17:56:55 +0100 |
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From: Gao Xiang <hsiangkao@linux.alibaba.com>
[ Upstream commit a0961f351d82d43ab0b845304caa235dfe249ae9 ]
syzbot reported a WARNING [1] due to corrupted compressed data.
As Dmitry said, "If this is not a kernel bug, then the code should not use WARN. WARN if for kernel bugs and is recognized as such by all testing systems and humans."
[1] https://lore.kernel.org/r/000000000000b3586105cf0ff45e@google.com
Link: https://lore.kernel.org/r/20211025074311.130395-1-hsiangkao@linux.alibaba.com Cc: Dmitry Vyukov <dvyukov@google.com> Reviewed-by: Chao Yu <chao@kernel.org> Reported-by: syzbot+d8aaffc3719597e8cfb4@syzkaller.appspotmail.com Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- fs/erofs/decompressor.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/fs/erofs/decompressor.c b/fs/erofs/decompressor.c index a5bc4b1b7813e..ad3f31380e6b2 100644 --- a/fs/erofs/decompressor.c +++ b/fs/erofs/decompressor.c @@ -233,7 +233,6 @@ static int z_erofs_lz4_decompress(struct z_erofs_decompress_req *rq, u8 *out) erofs_err(rq->sb, "failed to decompress %d in[%u, %u] out[%u]", ret, rq->inputsize, inputmargin, rq->outputsize); - WARN_ON(1); print_hex_dump(KERN_DEBUG, "[ in]: ", DUMP_PREFIX_OFFSET, 16, 1, src + inputmargin, rq->inputsize, true); print_hex_dump(KERN_DEBUG, "[out]: ", DUMP_PREFIX_OFFSET, -- 2.33.0
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