From ee75174f6ab93611e1623f0ae5590beda008aef5 Mon Sep 17 00:00:00 2001 From: Gao Xiang Date: Mon, 25 Oct 2021 15:43:11 +0800 Subject: [PATCH] erofs: don't trigger WARN() when decompression fails [ 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 Reviewed-by: Chao Yu Reported-by: syzbot+d8aaffc3719597e8cfb4@syzkaller.appspotmail.com Signed-off-by: Gao Xiang Signed-off-by: Sasha Levin --- fs/erofs/decompressor.c | 1 - 1 file changed, 1 deletion(-) diff --git a/fs/erofs/decompressor.c b/fs/erofs/decompressor.c index cbadbf5..8a6260a 100644 --- a/fs/erofs/decompressor.c +++ b/fs/erofs/decompressor.c @@ -170,7 +170,6 @@ 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, inlen, inputmargin, rq->outputsize); - WARN_ON(1); print_hex_dump(KERN_DEBUG, "[ in]: ", DUMP_PREFIX_OFFSET, 16, 1, src + inputmargin, inlen, true); print_hex_dump(KERN_DEBUG, "[out]: ", DUMP_PREFIX_OFFSET, -- 2.7.4