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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-01-26 12:01:29 +0000 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-02-14 06:09:32 -0500 |
| commit | 48461825af1bdc68cfa25fa0b698c958b65f7368 (patch) | |
| tree | 74b62e67e69e17deb0b5a931e06c710a6b99bd64 | |
| parent | f8b02dd655cc20ca7f321c42acbffb143eb8372a (diff) | |
| download | qemu-48461825af1bdc68cfa25fa0b698c958b65f7368.zip qemu-48461825af1bdc68cfa25fa0b698c958b65f7368.tar.gz qemu-48461825af1bdc68cfa25fa0b698c958b65f7368.tar.bz2 | |
hw/mem/cxl_type3: Fix potential divide by zero reported by coverity
Fixes Coverity ID 1522368.
Currently error_fatal is set if interleave_ways_dec() is going to return 0
but we should handle that zero return explicitly.
Reported-by: Stefan Hajnoczi <stefanha@gmail.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20240126120132.24248-10-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/mem/cxl_type3.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c index 1b92a06..71fcb44 100644 --- a/hw/mem/cxl_type3.c +++ b/hw/mem/cxl_type3.c @@ -794,8 +794,13 @@ static bool cxl_type3_dpa(CXLType3Dev *ct3d, hwaddr host_addr, uint64_t *dpa) } if (((uint64_t)host_addr < decoder_base) || (hpa_offset >= decoder_size)) { - dpa_base += decoder_size / - cxl_interleave_ways_dec(iw, &error_fatal); + int decoded_iw = cxl_interleave_ways_dec(iw, &error_fatal); + + if (decoded_iw == 0) { + return false; + } + + dpa_base += decoder_size / decoded_iw; continue; } |