Cargo fails on powerpc64le with sigill

[lu-zero]

I update the current rust today on a power9:

here the backtrace from simply running cargo

#0  0x0000000100000004 in ?? ()
#1  0x00000001008a8e90 in rand_pool_acquire_entropy ()
#2  0x00000001008a8688 in rand_drbg_get_entropy ()
#3  0x00000001008a5e58 in RAND_DRBG_instantiate ()
#4  0x00000001008a70a8 in drbg_setup ()
#5  0x00000001008a71c8 in do_rand_drbg_init_ossl_ ()
#6  0x00007ffff7f16184 in __pthread_once_slow () from /lib64/libpthread.so.0
#7  0x00000001008cc558 in CRYPTO_THREAD_run_once ()
#8  0x00000001008a7670 in RAND_DRBG_get0_public ()
#9  0x00000001008a7758 in drbg_bytes ()
#10 0x00000001008a8a70 in RAND_bytes ()
#11 0x00000001007ef630 in SSL_CTX_new ()
#12 0x000000010070f738 in git_openssl_stream_global_init ()
#13 0x00000001006e8f44 in init_once ()
#14 0x00007ffff7f16184 in __pthread_once_slow () from /lib64/libpthread.so.0
#15 0x00000001006e90b4 in git_libgit2_init ()
#16 0x0000000100695390 in std::sync::once::Once::call_once::{{closure}} ()
#17 0x00000001009efcb4 in std::sync::once::Once::call_inner () at src/libstd/sync/once.rs:387
#18 0x0000000100695338 in libgit2_sys::init ()
#19 0x0000000100685b30 in git2::config::Config::open_default ()
#20 0x00000001003f5c60 in cargo::ops::registry::http_proxy ()
#21 0x00000001003f42dc in cargo::ops::registry::needs_custom_http_transport ()
#22 0x00000001000c86c8 in cargo::main ()
#23 0x00000001000b5864 in std::rt::lang_start::{{closure}} ()
#24 0x00000001009f1934 in std::rt::lang_start_internal::{{closure}}::{{closure}} () at src/libstd/rt.rs:49
--Type <RET> for more, q to quit, c to continue without paging--
#25 std::sys_common::backtrace::__rust_begin_short_backtrace () at src/libstd/sys_common/backtrace.rs:135
#26 0x00000001009f3f1c in std::rt::lang_start_internal::{{closure}} () at src/libstd/rt.rs:49
#27 std::panicking::try::do_call () at src/libstd/panicking.rs:297
#28 0x0000000100a02a94 in __rust_maybe_catch_panic () at src/libpanic_unwind/lib.rs:92
#29 0x00000001009f4da8 in std::panicking::try () at src/libstd/panicking.rs:276
#30 std::panic::catch_unwind () at src/libstd/panic.rs:388
#31 std::rt::lang_start_internal () at src/libstd/rt.rs:48
#32 0x00000001000cad58 in main ()

And here is a strace:

syscall_0x1047a8e7c(0x11c576690, 0x20, 0x2f90, 0x1, 0x19, 0x190) = -1 ENOSYS (Function not implemented)
--- SIGILL {si_signo=SIGILL, si_code=ILL_ILLOPC, si_addr=0x103f00004} ---
+++ killed by SIGILL +++

uname

Linux sol 4.18.10-gentoo #1 SMP Thu Sep 27 00:19:49 -00 2018 ppc64le POWER9, altivec supported PowerNV T2P9S01 REV 1.01 GNU/Linux

[lu-zero]

1.30.1 is the last currently working version I can see

[dwijnand]

@lu-zero could you see if you can reproduce the error simply calling that git2 method?

[lu-zero]

gdb is not happy if I call it from main().

[dwijnand]

In that case, it's an upstream issue in https://github.com/alexcrichton/git2-rs.

[lu-zero]

it is probably a downstream issue in the shape of a possibly bogus openssl in the host building the rustup distribution. I hope to have time to start with the working cargo and build from there to make sure it is :)

[dwijnand]

Ah, I see.

I'm not sure where we track rustup distribution issues, but maybe we should refer to rust-lang/rustup#1620 for now.