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busdma: _bus_dmamap_addseg repaired
A recent change introduced a one-off error into a test allowing
coalescing chunks into segments. This fixes that error.
broke a check in _bus_dmamap_addseg on many architectures. This change makes it clear that it is not a particular range that is being boundary-checked, but the proposed union of the two adjacent ranges.
Reported by: se
Reviewed by: se
Fixes: c606ab59e7
vm_extern: use standard address checkers everywhere
Differential Revision: https://reviews.freebsd.org/D33715
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1b90dfa5d2
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@ -1027,8 +1027,8 @@ _bus_dmamap_addseg(bus_dma_tag_t dmat, bus_dmamap_t map, bus_addr_t curaddr,
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} else {
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if (curaddr == segs[seg].ds_addr + segs[seg].ds_len &&
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(segs[seg].ds_len + sgsize) <= dmat->maxsegsz &&
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vm_addr_bound_ok(segs[seg].ds_addr, segs[seg].ds_len,
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dmat->boundary))
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vm_addr_bound_ok(segs[seg].ds_addr,
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segs[seg].ds_len + sgsize, dmat->boundary))
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segs[seg].ds_len += sgsize;
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else {
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if (++seg >= dmat->nsegments)
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@ -787,8 +787,8 @@ _bus_dmamap_addseg(bus_dma_tag_t dmat, bus_dmamap_t map, bus_addr_t curaddr,
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} else {
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if (curaddr == segs[seg].ds_addr + segs[seg].ds_len &&
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(segs[seg].ds_len + sgsize) <= dmat->common.maxsegsz &&
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vm_addr_bound_ok(segs[seg].ds_addr, segs[seg].ds_len,
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dmat->common.boundary))
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vm_addr_bound_ok(segs[seg].ds_addr,
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segs[seg].ds_len + sgsize, dmat->common.boundary))
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segs[seg].ds_len += sgsize;
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else {
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if (++seg >= dmat->common.nsegments)
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@ -708,8 +708,8 @@ _bus_dmamap_addseg(bus_dma_tag_t dmat, bus_dmamap_t map, bus_addr_t curaddr,
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} else {
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if (curaddr == segs[seg].ds_addr + segs[seg].ds_len &&
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(segs[seg].ds_len + sgsize) <= dmat->maxsegsz &&
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vm_addr_bound_ok(segs[seg].ds_addr, segs[seg].ds_len,
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dmat->boundary))
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vm_addr_bound_ok(segs[seg].ds_addr,
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segs[seg].ds_len + sgsize, dmat->boundary))
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segs[seg].ds_len += sgsize;
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else {
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if (++seg >= dmat->nsegments)
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@ -656,8 +656,8 @@ _bus_dmamap_addseg(bus_dma_tag_t dmat, bus_dmamap_t map, bus_addr_t curaddr,
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} else {
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if (curaddr == segs[seg].ds_addr + segs[seg].ds_len &&
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(segs[seg].ds_len + sgsize) <= dmat->common.maxsegsz &&
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vm_addr_bound_ok(segs[seg].ds_addr, segs[seg].ds_len,
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dmat->common.boundary))
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vm_addr_bound_ok(segs[seg].ds_addr,
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segs[seg].ds_len + sgsize, dmat->common.boundary))
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segs[seg].ds_len += sgsize;
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else {
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if (++seg >= dmat->common.nsegments)
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@ -718,8 +718,8 @@ _bus_dmamap_addseg(bus_dma_tag_t dmat, bus_dmamap_t map, vm_paddr_t curaddr,
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} else {
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if (curaddr == segs[seg].ds_addr + segs[seg].ds_len &&
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(segs[seg].ds_len + sgsize) <= dmat->common.maxsegsz &&
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vm_addr_bound_ok(segs[seg].ds_addr, segs[seg].ds_len,
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dmat->common.boundary))
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vm_addr_bound_ok(segs[seg].ds_addr,
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segs[seg].ds_len + sgsize, dmat->common.boundary))
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segs[seg].ds_len += sgsize;
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else {
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if (++seg >= dmat->common.nsegments)
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