D49569.diff
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	diff --git a/sys/compat/linuxkpi/common/src/linux_pci.c b/sys/compat/linuxkpi/common/src/linux_pci.c
	--- a/sys/compat/linuxkpi/common/src/linux_pci.c
	+++ b/sys/compat/linuxkpi/common/src/linux_pci.c
	@@ -1471,14 +1471,19 @@
	}

	nseg = -1;
	- if (_bus_dmamap_load_phys(obj->dmat, obj->dmamap, phys, len,
	- BUS_DMA_NOWAIT, &seg, &nseg) != 0) {
	+ error = _bus_dmamap_load_phys(obj->dmat, obj->dmamap, phys, len,
	+ BUS_DMA_NOWAIT, &seg, &nseg);
	+ if (error != 0) {
	bus_dmamap_destroy(obj->dmat, obj->dmamap);
	DMA_PRIV_UNLOCK(priv);
	uma_zfree(linux_dma_obj_zone, obj);
	counter_u64_add(lkpi_pci_nseg1_fail, 1);
	- if (linuxkpi_debug)
	+ if (linuxkpi_debug) {
	+ device_printf(dev->bsddev, "%s: _bus_dmamap_load_phys "
	+ "error %d, phys %#018jx len %zu\n", __func__,
	+ error, (uintmax_t)phys, len);
	dump_stack();
	+ }
	return (0);
	}