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| author | J. Nick Koston <nick@koston.org> | 2023-07-23 04:07:14 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-07-23 04:07:14 (GMT) |
| commit | 9eeb4b485f4f9e13e5cb638e43a0baecb3ff4e86 (patch) | |
| tree | 76de961ab48cb998b9476663f62a37f25f6e823d | |
| parent | 7fc9be350af055538e70ece8d7de78414bad431e (diff) | |
| download | cpython-9eeb4b485f4f9e13e5cb638e43a0baecb3ff4e86.zip cpython-9eeb4b485f4f9e13e5cb638e43a0baecb3ff4e86.tar.gz cpython-9eeb4b485f4f9e13e5cb638e43a0baecb3ff4e86.tar.bz2 | |
gh-82500: Fix asyncio sendfile overflow on 32bit (#107056)
| -rw-r--r-- | Lib/asyncio/unix_events.py | 3 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Library/2023-07-22-16-44-58.gh-issue-82500.cQYoPj.rst | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/Lib/asyncio/unix_events.py b/Lib/asyncio/unix_events.py index 17fb4d5..a268086 100644 --- a/Lib/asyncio/unix_events.py +++ b/Lib/asyncio/unix_events.py @@ -394,6 +394,9 @@ class _UnixSelectorEventLoop(selector_events.BaseSelectorEventLoop): fut.set_result(total_sent) return + # On 32-bit architectures truncate to 1GiB to avoid OverflowError + blocksize = min(blocksize, sys.maxsize//2 + 1) + try: sent = os.sendfile(fd, fileno, offset, blocksize) except (BlockingIOError, InterruptedError): diff --git a/Misc/NEWS.d/next/Library/2023-07-22-16-44-58.gh-issue-82500.cQYoPj.rst b/Misc/NEWS.d/next/Library/2023-07-22-16-44-58.gh-issue-82500.cQYoPj.rst new file mode 100644 index 0000000..065394f --- /dev/null +++ b/Misc/NEWS.d/next/Library/2023-07-22-16-44-58.gh-issue-82500.cQYoPj.rst @@ -0,0 +1 @@ +Fix overflow on 32-bit systems with :mod:`asyncio` :func:`os.sendfile` implemention. |