Crash handler core dedup - #17
Open
nchaimov wants to merge 15 commits into
Open
Conversation
nchaimov
force-pushed
the
crash-handler-core-dedup
branch
from
June 19, 2026 22:24
b2bbda8 to
476393f
Compare
nchaimov
force-pushed
the
crash-handler-core-dedup
branch
from
June 19, 2026 23:55
476393f to
3e6e39e
Compare
Move cachpath consensus to be calculated at init time
Adds server-side components of crash handling. Client sends LDCS_MSG_CRASH_REPORT to sever. Server propagates request. When a single rank is chosen for a given crashsite, replies with LDCS_MSG_CRASH_RESPONSE.
Add the client-side crash handler. On a fatal signal, it chains to an application-registered signal handler, if any, and, if the application handler did not fix the fault, sends LDCS_MSG_CRASH_REPORT to the server which selects a single process per crashsite. Non-selected crashsites set their coredump limit to zero.
Adds --crash-dedup option to control whether crash deduplication is enabled.
Adds --enable-crash-handler to control whether the crash handler is compiled. Adds --enable-crash-dedup to control whether crash deduplication is enabled by default at runtime.
Adds a new script run_crash_tests_template.sh which runs various configurations of the new crash_test.c testsuite. This tests various kinds of crashes, numberes of distinct crashsites, etc. to validate that the crash handler deduplicates them correctly. It also tests chaining to application signal handlers that use the safepoint pattern to fix faults and retry.
Run the new crash handler testsuite in CI. Configure CI runner to generate coredumps, add shared filesystem to aggregate coredumps across nodes in mutli-node tests. Grants CAP_SYS_RESOURCE so ulimit can be set in containers.
autotools-generated files re-generated
nchaimov
force-pushed
the
crash-handler-core-dedup
branch
from
July 8, 2026 02:00
c5a3b61 to
46fa81e
Compare
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Dummy PR to trigger CI