Re: [PATCH] linux: Inline syscall cancellation to keep wrapper frames observable (BZ 34338)
Adhemerval Zanella Netto <[email protected]>
| Newsgroups | gmane.comp.lib.glibc.alpha |
|---|---|
| Organization | Linaro |
| Message-ID | <[email protected]> |
On 19/07/26 08:29, Andreas K. Huettel wrote: > Am Mittwoch, 1. Juli 2026, 04:09:25 Japanische Normalzeit schrieb Adhemerval Zanella: >> The cancellable syscall wrappers end with a tail call to __syscall_cancel, >> ithe wrapper frame is then elided, so when the syscall executes the wrapper >> is no longer present on the stack. Tools that unwind from CFI alone, such >> as valgrind, perf and sampling profilers, cannot observe it. On gdb, it >> only recovers it from DWARF call site information, which reduced-debuginfo >> libc builds usually omit. > > Let's postpone this now please. It's not critical and can be backported. Sure, I recall that we decided to postpone it to next relase on last weekly call.