From: Gao Xiang <hsiangkao@linux.alibaba.com> To: linux-erofs@lists.ozlabs.org Cc: LKML <linux-kernel@vger.kernel.org>, Gao Xiang <hsiangkao@linux.alibaba.com>, syzbot+d8aaffc3719597e8cfb4@syzkaller.appspotmail.com, Dmitry Vyukov <dvyukov@google.com>, Chao Yu <chao@kernel.org> Subject: [PATCH] erofs: don't trigger WARN() when decompression fails Date: Mon, 25 Oct 2021 15:43:11 +0800 [thread overview] Message-ID: <20211025074311.130395-1-hsiangkao@linux.alibaba.com> (raw) 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 Reported-by: syzbot+d8aaffc3719597e8cfb4@syzkaller.appspotmail.com Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Chao Yu <chao@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> --- fs/erofs/decompressor.c | 1 - 1 file changed, 1 deletion(-) diff --git a/fs/erofs/decompressor.c b/fs/erofs/decompressor.c index a0786b95cdf9..bf37fc76b182 100644 --- a/fs/erofs/decompressor.c +++ b/fs/erofs/decompressor.c @@ -227,7 +227,6 @@ static int z_erofs_lz4_decompress_mem(struct z_erofs_decompress_req *rq, 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, -- 2.24.4
WARNING: multiple messages have this Message-ID (diff)
From: Gao Xiang <hsiangkao@linux.alibaba.com> To: linux-erofs@lists.ozlabs.org Cc: Gao Xiang <hsiangkao@linux.alibaba.com>, LKML <linux-kernel@vger.kernel.org>, Dmitry Vyukov <dvyukov@google.com>, syzbot+d8aaffc3719597e8cfb4@syzkaller.appspotmail.com Subject: [PATCH] erofs: don't trigger WARN() when decompression fails Date: Mon, 25 Oct 2021 15:43:11 +0800 [thread overview] Message-ID: <20211025074311.130395-1-hsiangkao@linux.alibaba.com> (raw) 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 Reported-by: syzbot+d8aaffc3719597e8cfb4@syzkaller.appspotmail.com Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Chao Yu <chao@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> --- fs/erofs/decompressor.c | 1 - 1 file changed, 1 deletion(-) diff --git a/fs/erofs/decompressor.c b/fs/erofs/decompressor.c index a0786b95cdf9..bf37fc76b182 100644 --- a/fs/erofs/decompressor.c +++ b/fs/erofs/decompressor.c @@ -227,7 +227,6 @@ static int z_erofs_lz4_decompress_mem(struct z_erofs_decompress_req *rq, 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, -- 2.24.4
next reply other threads:[~2021-10-25 7:43 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-10-25 7:43 Gao Xiang [this message] 2021-10-25 7:43 ` [PATCH] erofs: don't trigger WARN() when decompression fails Gao Xiang 2021-10-29 6:35 ` Chao Yu 2021-10-29 6:35 ` Chao Yu
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