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linux: disable io_uring on ppc64 and ppc64le (#4285)

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Since `io_uring` support was added, libuv's signal handler randomly
segfaults on ppc64 when interrupting `epoll_pwait`.  Disable it
pending further investigation.

Issue: https://github.com/libuv/libuv/issues/4283
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Brad King 2024-01-13 06:04:01 -05:00 committed by GitHub
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commit 3b6a1a14ca
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src/unix/linux.c
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@ -463,6 +463,9 @@ static int uv__use_io_uring(void) {
#elif defined(__arm__) && __SIZEOF_POINTER__ == 4
/* See https://github.com/libuv/libuv/issues/4158. */
return 0; /* All 32 bits kernels appear buggy. */
#elif defined(__powerpc64__) || defined(__ppc64__)
/* See https://github.com/libuv/libuv/issues/4283. */
return 0; /* Random SIGSEGV in signal handler. */
#else
/* Ternary: unknown=0, yes=1, no=-1 */
static _Atomic int use_io_uring;