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CFI: Fix ICE in KCFI non-associated function pointers #123635

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merged 1 commit into from
Apr 8, 2024

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@maurer maurer commented Apr 8, 2024

We oddly weren't testing the more usual case of casting non-methods to function pointers. The KCFI shim insertion logic would ICE on these due to asking for an irrefutable associated item if we cast a function to a function pointer without needing a traditional shim.

r? @compiler-errors

We oddly weren't testing the more usual case of casting non-methods to
function pointers. The KCFI shim insertion logic would ICE on these due
to asking for an irrefutable associated item if we cast a function to a
function pointer without needing a traditional shim.
@rustbot rustbot added PG-exploit-mitigations Project group: Exploit mitigations 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 Apr 8, 2024
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rustbot commented Apr 8, 2024

Some changes occurred in tests/ui/sanitizer

cc @rust-lang/project-exploit-mitigations, @rcvalle

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🤦 haha thanks for catching this, I should have caught this

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@bors r+ rollup

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bors commented Apr 8, 2024

📌 Commit 284da5d has been approved by compiler-errors

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 Apr 8, 2024
bors added a commit to rust-lang-ci/rust that referenced this pull request Apr 8, 2024
…iaskrgr

Rollup of 9 pull requests

Successful merges:

 - rust-lang#122781 (Fix argument ABI for overaligned structs on ppc64le)
 - rust-lang#123367 (Safe Transmute: Compute transmutability from `rustc_target::abi::Layout`)
 - rust-lang#123518 (Fix `ByMove` coroutine-closure shim (for 2021 precise closure capturing behavior))
 - rust-lang#123547 (bootstrap: remove unused pub fns)
 - rust-lang#123564 (Don't emit divide-by-zero panic paths in `StepBy::len`)
 - rust-lang#123578 (Restore `pred_known_to_hold_modulo_regions`)
 - rust-lang#123591 (Remove unnecessary cast from `LLVMRustGetInstrProfIncrementIntrinsic`)
 - rust-lang#123632 (parser: reduce visibility of unnecessary public `UnmatchedDelim`)
 - rust-lang#123635 (CFI: Fix ICE in KCFI non-associated function pointers)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 0520200 into rust-lang:master Apr 8, 2024
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rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Apr 8, 2024
Rollup merge of rust-lang#123635 - maurer:kcfi-no-assoc, r=compiler-errors

CFI: Fix ICE in KCFI non-associated function pointers

We oddly weren't testing the more usual case of casting non-methods to function pointers. The KCFI shim insertion logic would ICE on these due to asking for an irrefutable associated item if we cast a function to a function pointer without needing a traditional shim.

r? `@compiler-errors`
@rustbot rustbot added this to the 1.79.0 milestone Apr 8, 2024
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4 participants