google-cloud-nio: CloudStorageReadChannel: fix critical bug that could cause the channel position to overflow by droazen · Pull Request #2283 · googleapis/google-cloud-java

droazen · 2017-07-27T17:58:48Z

This fixes a critical bug in CloudStorageReadChannel in which the channel position
(a long) was getting down-cast to int in CloudStorageReadChannel.innerOpen(). This
could cause the channel position to become negative or a wildly incorrect positive
value if the channel position was greater than MAX_INT.

In practice, this bug would only manifest itself if the channel was constructed with
a non-zero initial position, or if the channel was reopened in response to an error.

Included a test case that fails without the fix, and passes with the fix.

lbergelson · 2017-07-27T18:00:15Z

The long nightmare is almost over!

pshapiro4broad · 2017-07-27T18:19:24Z

👍

lbergelson · 2017-07-27T18:41:17Z

This will fix broadinstitute/gatk#2516 and broadinstitute/gatk#3316

coveralls · 2017-07-27T19:12:17Z

Changes Unknown when pulling 72215b5 on droazen:dr_fix_CloudStorageReadChannel_position_overflow into ** on GoogleCloudPlatform:master**.

…shaded This includes the fix for the position overflowing in CloudStorageReadChannel (googleapis/google-cloud-java#2283), as well as the fix for the intermittent 503 errors we've already been depending on (googleapis/google-cloud-java#2281)

…shaded (#3373) This includes the fix for the position overflowing in CloudStorageReadChannel (googleapis/google-cloud-java#2283), as well as the fix for the intermittent 503 errors we've already been depending on (googleapis/google-cloud-java#2281)

droazen · 2017-08-15T18:33:26Z

@garrettjonesgoogle Could we please get an official review on this PR and #2281? Without these patches google-cloud-nio is unusable at large scale, so as a large-scale user of this library we are naturally eager to see these make it into a future release! :)

This PR (#2283) fixes a nasty bug that could cause the channel position to overflow and become either negative or a wildly incorrect positive value, leading to corruption of the input stream from the client perspective. This is not a hypothetical problem -- we experienced it quite frequently!

The other PR (#2281) wraps additional GCS operations within retry loops. Without that patch, 10-20% of our jobs were failing with transient 503 errors.

Thanks for your help!

michaelbausor

LGTM, one nit from Codacy

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+    // This position value will overflow to a negative value if a long -> int cast is attempted
+    long startPosition = 11918483280L;
+    ArgumentCaptor<Long> captor = ArgumentCaptor.forClass(Long.class);
+    final CloudStorageReadChannel channel = CloudStorageReadChannel.create(gcsStorage, file, startPosition, 1);


…d cause the channel position to overflow This fixes a critical bug in CloudStorageReadChannel in which the channel position (a long) was getting down-cast to int in CloudStorageReadChannel.innerOpen(). This could cause the channel position to become negative or a wildly incorrect positive value if the channel position was greater than MAX_INT. In practice, this bug would only manifest itself if the channel was constructed with a non-zero initial position, or if the channel was reopened in response to an error. Included a test case that fails without the fix, and passes with the fix.

droazen · 2017-08-24T14:43:12Z

@michaelbausor Thanks for the review! I've addressed the codacy error, so this should be good to go now I think.

droazen · 2017-08-24T16:03:54Z

Thanks for merging this and #2281 @michaelbausor! Is there a timeline for the next google-cloud-java release?

michaelbausor · 2017-08-24T16:06:06Z

Re the timing of the next release, @garrettjonesgoogle will know best

…s#2283)

…low (#2283) This fixes a critical bug in CloudStorageReadChannel in which the channel position (a long) was getting down-cast to int in CloudStorageReadChannel.innerOpen(). This could cause the channel position to become negative or a wildly incorrect positive value if the channel position was greater than MAX_INT. In practice, this bug would only manifest itself if the channel was constructed with a non-zero initial position, or if the channel was reopened in response to an error. Included a test case that fails without the fix, and passes with the fix.

* chore(main): release 3.35.0 * chore: generate libraries at Thu Jan 15 15:40:14 UTC 2026 --------- Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com> Co-authored-by: cloud-java-bot <cloud-java-bot@google.com>

…eapis#2283) [![Mend Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [com.google.truth:truth](https://togithub.com/google/truth) | `1.4.3` -> `1.4.4` | [![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.truth:truth/1.4.4?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.truth:truth/1.4.4?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.truth:truth/1.4.3/1.4.4?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.truth:truth/1.4.3/1.4.4?slim=true)](https://docs.renovatebot.com/merge-confidence/) | --- ### Release Notes <details> <summary>google/truth (com.google.truth:truth)</summary> ### [`v1.4.4`](https://togithub.com/google/truth/releases/tag/v1.4.4) [Compare Source](https://togithub.com/google/truth/compare/v1.4.3...v1.4.4) - Annotated the rest of the main package for nullness, and moved the `@NullMarked` annotation from individual classes up to the package to avoid [a warning under `--release 8`](https://togithub.com/google/truth/issues/1320). ([`e107aea`](https://togithub.com/google/truth/commit/e107aeadc)) - Improved the failure message for `matches` to conditionally suggest using `containsMatch`. ([`7e9fc7a`](https://togithub.com/google/truth/commit/7e9fc7aec)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about these updates again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View the [repository job log](https://developer.mend.io/github/googleapis/java-bigtable).

googlebot added the cla: yes This human has signed the Contributor License Agreement. label Jul 27, 2017

droazen mentioned this pull request Jul 27, 2017

Error in BaseRecalibrator while using NIO broadinstitute/gatk#3316

Closed

droazen mentioned this pull request Jul 27, 2017

Update google-cloud-nio dependency to 0.20.4-alpha-20170727.190814-1:shaded broadinstitute/gatk#3373

Merged

droazen mentioned this pull request Aug 1, 2017

NIO error: "position should be non-negative" broadinstitute/gatk#2516

Closed

michaelbausor reviewed Aug 21, 2017

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droazen force-pushed the dr_fix_CloudStorageReadChannel_position_overflow branch from 72215b5 to 398cdaa Compare August 24, 2017 14:40

michaelbausor approved these changes Aug 24, 2017

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michaelbausor merged commit 4055f1f into googleapis:master Aug 24, 2017

droazen mentioned this pull request Aug 24, 2017

Update to next google-cloud-java release once it's out broadinstitute/gatk#3500

Closed

suztomo pushed a commit to suztomo/google-cloud-java that referenced this pull request Mar 23, 2026

deps: update dependency commons-cli:commons-cli to v1.11.0 (googleapi…

7e716fc

…s#2283)

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google-cloud-nio: CloudStorageReadChannel: fix critical bug that could cause the channel position to overflow - #2283

google-cloud-nio: CloudStorageReadChannel: fix critical bug that could cause the channel position to overflow#2283
michaelbausor merged 1 commit into
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droazen:dr_fix_CloudStorageReadChannel_position_overflow

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