Jeff Wendling e22c0bff94 lib/uplinkc: fix flaky download test (#2791) ... The download driver code loops through the downloaded_data buffer but doesn't ensure that it always passes a valid pointer to the Go side. In particular, if the malloc'd memory ends against an unmapped page, and the test passes a pointer one past the end of the memory region, and since the Go side always dereferences the pointer when creating a slice, it will attempt to read unmapped memory, causing a segfault. This bug doesn't always present. Indeed, it depends on the details of your system's memory allocator. I validated that this could be a cause of observed crashes on OS X by using mmap and mprotect to do the allocations ensuring that the page directly after the memory we use was unmapped/protected. The crash happened exactly as seen, and was fixed by changing this condition in the while loop. Change-Id: I685dac07ff9b904097375dbf850f387450858753		2019-08-15 11:32:29 +03:00
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uplink	lib/uplink: remove Seek method (#2768)	2019-08-13 20:29:02 +03:00
uplinkc	lib/uplinkc: fix flaky download test (#2791)	2019-08-15 11:32:29 +03:00