BugLink: https://bugs.launchpad.net/bugs/1837813
[ Upstream commit
6454368a804c4955ccd116236037536f81e5b1f1 ]
In case of mapping error the DMA addresses are invalid and continuing
will screw system memory or potentially something else.
[ 222.480310] dmatest: dma0chan7-copy0: summary 1 tests, 3 failures 6 iops 349 KB/s (0)
...
[ 240.912725] check: Corrupted low memory at
00000000c7c75ac9 (2940 phys) =
5656000000000000
[ 240.921998] check: Corrupted low memory at
000000005715a1cd (2948 phys) =
279f2aca5595ab2b
[ 240.931280] check: Corrupted low memory at
000000002f4024c0 (2950 phys) =
5e5624f349e793cf
...
Abort any test if mapping failed.
Fixes: 4076e755dbec ("dmatest: convert to dmaengine_unmap_data")
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>
srcs[i] = um->addr[i] + src_off;
ret = dma_mapping_error(dev->dev, um->addr[i]);
if (ret) {
srcs[i] = um->addr[i] + src_off;
ret = dma_mapping_error(dev->dev, um->addr[i]);
if (ret) {
- dmaengine_unmap_put(um);
result("src mapping error", total_tests,
src_off, dst_off, len, ret);
result("src mapping error", total_tests,
src_off, dst_off, len, ret);
- failed_tests++;
- continue;
+ goto error_unmap_continue;
DMA_BIDIRECTIONAL);
ret = dma_mapping_error(dev->dev, dsts[i]);
if (ret) {
DMA_BIDIRECTIONAL);
ret = dma_mapping_error(dev->dev, dsts[i]);
if (ret) {
- dmaengine_unmap_put(um);
result("dst mapping error", total_tests,
src_off, dst_off, len, ret);
result("dst mapping error", total_tests,
src_off, dst_off, len, ret);
- failed_tests++;
- continue;
+ goto error_unmap_continue;
- dmaengine_unmap_put(um);
result("prep error", total_tests, src_off,
dst_off, len, ret);
msleep(100);
result("prep error", total_tests, src_off,
dst_off, len, ret);
msleep(100);
- failed_tests++;
- continue;
+ goto error_unmap_continue;
cookie = tx->tx_submit(tx);
if (dma_submit_error(cookie)) {
cookie = tx->tx_submit(tx);
if (dma_submit_error(cookie)) {
- dmaengine_unmap_put(um);
result("submit error", total_tests, src_off,
dst_off, len, ret);
msleep(100);
result("submit error", total_tests, src_off,
dst_off, len, ret);
msleep(100);
- failed_tests++;
- continue;
+ goto error_unmap_continue;
}
dma_async_issue_pending(chan);
}
dma_async_issue_pending(chan);
dmaengine_unmap_put(um);
result("test timed out", total_tests, src_off, dst_off,
len, 0);
dmaengine_unmap_put(um);
result("test timed out", total_tests, src_off, dst_off,
len, 0);
- failed_tests++;
- continue;
+ goto error_unmap_continue;
} else if (status != DMA_COMPLETE) {
dmaengine_unmap_put(um);
result(status == DMA_ERROR ?
"completion error status" :
"completion busy status", total_tests, src_off,
dst_off, len, ret);
} else if (status != DMA_COMPLETE) {
dmaengine_unmap_put(um);
result(status == DMA_ERROR ?
"completion error status" :
"completion busy status", total_tests, src_off,
dst_off, len, ret);
- failed_tests++;
- continue;
+ goto error_unmap_continue;
}
dmaengine_unmap_put(um);
}
dmaengine_unmap_put(um);
verbose_result("test passed", total_tests, src_off,
dst_off, len, 0);
}
verbose_result("test passed", total_tests, src_off,
dst_off, len, 0);
}
+
+ continue;
+
+error_unmap_continue:
+ dmaengine_unmap_put(um);
+ failed_tests++;
}
ktime = ktime_sub(ktime_get(), ktime);
ktime = ktime_sub(ktime, comparetime);
}
ktime = ktime_sub(ktime_get(), ktime);
ktime = ktime_sub(ktime, comparetime);