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@arielb1 arielb1 commented Sep 8, 2025

That test causes a large amount of crashes. If a system has a /proc/sys/kernel/core_pattern that uploads core dumps enabled, it will take a long time to complete. Set dumpable to 0 to avoid that.

Before:

$ time ./panic-uninitialized-zeroed

real    0m47.457s
user    0m0.023s
sys     0m0.021s

After:

$ ./panic-uninitialized-zeroed

real    0m0.029s
user    0m0.019s
sys     0m0.010s

That test causes a large amount of crashes. If a system
has a /proc/sys/kernel/core_pattern that uploads core dumps enabled,
it will take a long time to complete. Set dumpable to 0 to avoid that.

Before:

$ time ./panic-uninitialized-zeroed

real    0m47.457s
user    0m0.023s
sys     0m0.021s

After:
$ ./panic-uninitialized-zeroed

real    0m0.029s
user    0m0.019s
sys     0m0.010s
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rustbot commented Sep 8, 2025

r? @nnethercote

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@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Sep 8, 2025
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Nice! I've been setting fs.suid_dumpable=0 and kernel.core_pattern=|/bin/false via sysctl to avoid this. Doing it in the test is much better.

@bors r+ rollup

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@wesleywiser
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@nnethercote bors doesn't seem to acknowledge commands left in "review" comments ☹️

@bors r=nnethercote rollup

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bors commented Sep 10, 2025

📌 Commit ef95c63 has been approved by nnethercote

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Sep 10, 2025
bors added a commit that referenced this pull request Sep 11, 2025
Rollup of 11 pull requests

Successful merges:

 - #142315 (core::ptr: deduplicate docs for as_ref, addr, and as_uninit_ref)
 - #146335 (disable core dumps for panic-uninitialized-zeroed)
 - #146347 (report duplicate symbols added by the driver)
 - #146370 (Update the LoongArch target documentation)
 - #146379 (Fix `compare_against_sw_vers` test)
 - #146380 (Unify and deduplicate bits conv float tests)
 - #146415 (s390x: mark soft-float target feature as incompatible)
 - #146422 (Less greedily parse `[const]` bounds)
 - #146424 (Improve `core::ops` coverage)
 - #146425 (Improve `core::array` coverage)
 - #146428 (Revert `assert!` desugaring changes (#122661))

r? `@ghost`
`@rustbot` modify labels: rollup
bors added a commit that referenced this pull request Sep 11, 2025
Rollup of 11 pull requests

Successful merges:

 - #142315 (core::ptr: deduplicate docs for as_ref, addr, and as_uninit_ref)
 - #146335 (disable core dumps for panic-uninitialized-zeroed)
 - #146347 (report duplicate symbols added by the driver)
 - #146370 (Update the LoongArch target documentation)
 - #146379 (Fix `compare_against_sw_vers` test)
 - #146380 (Unify and deduplicate bits conv float tests)
 - #146415 (s390x: mark soft-float target feature as incompatible)
 - #146422 (Less greedily parse `[const]` bounds)
 - #146424 (Improve `core::ops` coverage)
 - #146425 (Improve `core::array` coverage)
 - #146428 (Revert `assert!` desugaring changes (#122661))

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit cc51a7e into rust-lang:master Sep 11, 2025
10 checks passed
@rustbot rustbot added this to the 1.91.0 milestone Sep 11, 2025
rust-timer added a commit that referenced this pull request Sep 11, 2025
Rollup merge of #146335 - arielb1:dont-dump-core, r=nnethercote

disable core dumps for panic-uninitialized-zeroed

That test causes a large amount of crashes. If a system has a /proc/sys/kernel/core_pattern that uploads core dumps enabled, it will take a long time to complete. Set dumpable to 0 to avoid that.

Before:
```
$ time ./panic-uninitialized-zeroed

real    0m47.457s
user    0m0.023s
sys     0m0.021s
```

After:
```
$ ./panic-uninitialized-zeroed

real    0m0.029s
user    0m0.019s
sys     0m0.010s
```
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5 participants