SIGILL when panicking (unwinding?) on sparc64-linux

[japaric]

STR

fn main() {
    panic!();
}

$ rustc --target sparc64-unknown-linux-gnu panic.rs

$ QEMU_LD_PREFIX=/usr/sparc64-linux-gnu qemu-sparc64-static panic
thread 'main' panicked at 'explicit panic', panic.rs:1
note: Run with `RUST_BACKTRACE=1` for a backtrace.
Illegal instruction (core dumped)

Syscall trace:

783 brk(NULL) = 0x0000004000132000 783 uname(0x400093376a) = 0 783 access("/etc/ld.so.nohwcap",F_OK) = -1 errno=2 (No such file or directory) 783 mmap(NULL,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS,-1,0) = 0x0000004000a5a000 783 access("/etc/ld.so.preload",R_OK) = -1 errno=2 (No such file or directory) 783 open("/etc/ld.so.cache",O_RDONLY|O_CLOEXEC) = 3 783 fstat64(3,0x0000004000932c40) = 0 783 mmap(NULL,17171,PROT_READ,MAP_PRIVATE,3,0) = 0x0000004000a5c000 783 close(3) = 0 783 open("/lib/sparc64-linux-gnu/tls/libdl.so.2",O_RDONLY|O_CLOEXEC) = -1 errno=2 (No such file or directory) 783 stat64("/lib/sparc64-linux-gnu/tls",0x0000004000932c50) = -1 errno=2 (No such file or directory) 783 open("/lib/sparc64-linux-gnu/libdl.so.2",O_RDONLY|O_CLOEXEC) = -1 errno=2 (No such file or directory) 783 stat64("/lib/sparc64-linux-gnu",0x0000004000932c50) = -1 errno=2 (No such file or directory) 783 open("/usr/lib/sparc64-linux-gnu/tls/libdl.so.2",O_RDONLY|O_CLOEXEC) = -1 errno=2 (No such file or directory) 783 stat64("/usr/lib/sparc64-linux-gnu/tls",0x0000004000932c50) = -1 errno=2 (No such file or directory) 783 open("/usr/lib/sparc64-linux-gnu/libdl.so.2",O_RDONLY|O_CLOEXEC) = -1 errno=2 (No such file or directory) 783 stat64("/usr/lib/sparc64-linux-gnu",0x0000004000932c50) = -1 errno=2 (No such file or directory) 783 open("/lib/tls/libdl.so.2",O_RDONLY|O_CLOEXEC) = -1 errno=2 (No such file or directory) 783 stat64("/lib/tls",0x0000004000932c50) = -1 errno=2 (No such file or directory) 783 open("/lib/libdl.so.2",O_RDONLY|O_CLOEXEC) = 3 783 read(3,0x933020,832) = 832 783 fstat64(3,0x0000004000932c30) = 0 783 mmap(NULL,1065984,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 0x0000004000a62000 783 mprotect(0x0000004000a66000,1040384,PROT_NONE) = 0 783 mmap(0x0000004000b64000,16384,PROT_EXEC|PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0x2000) = 0x0000004000b64000 783 close(3) = 0 783 open("/lib/librt.so.1",O_RDONLY|O_CLOEXEC) = 3 783 read(3,0x932ff0,832) = 832 783 fstat64(3,0x0000004000932c00) = 0 783 mmap(NULL,1085880,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 0x0000004000b68000 783 mprotect(0x0000004000b70000,1040384,PROT_NONE) = 0 783 mmap(0x0000004000c6e000,16384,PROT_EXEC|PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0x6000) = 0x0000004000c6e000 783 close(3) = 0 783 open("/lib/libpthread.so.0",O_RDONLY|O_CLOEXEC) = 3 783 read(3,0x932fc0,832) = 832 783 fstat64(3,0x0000004000932bd0) = 0 783 mmap(NULL,1166640,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 0x0000004000c72000 783 mprotect(0x0000004000c8a000,1040384,PROT_NONE) = 0 783 mmap(0x0000004000d88000,16384,PROT_EXEC|PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0x16000) = 0x0000004000d88000 783 mmap(0x0000004000d8c000,11568,PROT_EXEC|PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED,-1,0) = 0x0000004000d8c000 783 close(3) = 0 783 open("/lib/libgcc_s.so.1",O_RDONLY|O_CLOEXEC) = 3 783 read(3,0x932f90,832) = 832 783 fstat64(3,0x0000004000932ba0) = 0 783 mmap(NULL,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS,-1,0) = 0x0000004000d90000 783 mmap(NULL,1116712,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 0x0000004000d92000 783 mprotect(0x0000004000da2000,1040384,PROT_NONE) = 0 783 mmap(0x0000004000ea0000,16384,PROT_EXEC|PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0xe000) = 0x0000004000ea0000 783 close(3) = 0 783 open("/lib/libc.so.6",O_RDONLY|O_CLOEXEC) = 3 783 read(3,0x932f60,832) = 832 783 fstat64(3,0x0000004000932b70) = 0 783 mmap(NULL,2506496,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 0x0000004000ea4000 783 mprotect(0x0000004000ffe000,1048576,PROT_NONE) = 0 783 mmap(0x00000040010fe000,32768,PROT_EXEC|PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0x15a000) = 0x00000040010fe000 783 mmap(0x0000004001106000,7936,PROT_EXEC|PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED,-1,0) = 0x0000004001106000 783 close(3) = 0 783 mmap(NULL,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS,-1,0) = 0x0000004001108000 783 mprotect(0x00000040010fe000,16384,PROT_READ) = 0 783 mprotect(0x0000004000ea0000,8192,PROT_READ) = 0 783 mprotect(0x0000004000d88000,8192,PROT_READ) = 0 783 mprotect(0x0000004000c6e000,8192,PROT_READ) = 0 783 mprotect(0x0000004000b64000,8192,PROT_READ) = 0 783 mprotect(0x000000400012c000,16384,PROT_READ) = 0 783 mprotect(0x0000004000a56000,8192,PROT_READ) = 0 783 munmap(0x0000004000a5c000,17171) = 0 783 set_tid_address(274895767616,17171,274887555240,274888752024,274892133624,1) = 783 783 set_robust_list(274895767632,24,274887555240,274888752024,274892133624,1) = -1 errno=38 (Function not implemented) 783 rt_sigaction(32,0x0000004000933760,NULL) = 0 783 rt_sigaction(33,0x0000004000933760,NULL) = -1 errno=22 (Invalid argument) 783 rt_sigprocmask(SIG_UNBLOCK,0x0000004000933960,NULL) = 0 783 getrlimit(3,274887555400,0,8,274893819160,274891036664) = 0 783 rt_sigaction(SIGPIPE,0x00000040009332f0,0x0000004000933388) = 0 783 brk(NULL) = 0x0000004000132000 783 brk(0x0000004000154000) = 0x0000004000132000 783 mmap(NULL,1048576,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS,-1,0) = 0x000000400110a000 783 open("/proc/self/maps",O_RDONLY|O_CLOEXEC) = 3 783 getrlimit(3,274887554544,1,274879156384,274888752024,274895773712) = 0 783 fstat64(3,0x0000004000933090) = 0 783 read(3,0x110a2c0,4096) = 3671 783 close(3) = 0 783 sched_getaffinity(783,32,274895773712,-16,0,274895746512) = 16 783 mmap(0x0000004000134000,8192,PROT_NONE,MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED,-1,0) = 0x0000004000134000 783 rt_sigaction(SIGSEGV,0x00000040009334d0,NULL) = 0 783 rt_sigaction(10,0x00000040009334d0,NULL) = 0 783 sigaltstack((nil),0x40009335e8) = 0 783 write(2,0x24887,8)thread ' = 8 783 write(2,0x110a040,4)main = 4 783 write(2,0x2488f,15)' panicked at ' = 15 783 write(2,0x23570,14)explicit panic = 14 783 write(2,0x2489e,3)', = 3 783 write(2,0x2357e,8)panic.rs = 8 783 write(2,0x243de,1): = 1 783 write(2,0x932adf,1)1 = 1 783 write(2,0x23d86,1) = 1 783 write(2,0x248b0,51)note: Run with `RUST_BACKTRACE=1` for a backtrace. = 51 Illegal instruction (core dumped)

With RUST_BACKTRACE

$ QEMU_LD_PREFIX=/usr/sparc64-linux-gnu RUST_BACKTRACE=1 qemu-sparc64-static panic
thread 'main' panicked at 'explicit panic', panic.rs:1
stack backtrace:
Illegal instruction (core dumped)

std for sparc64-linux was built using rustbuild.

No GDB info at this moment.

Meta

$ rustc -V
rustc 1.17.0-dev

$ git rev-parse HEAD
c14f87e3b0823407a91a283796bf78ef83d5fe99

[glaubitz]

I think this can be closed as rustc works stable now on sparc64-unknown-linux-gnu. There are some testsuite failures still, but those can be fixed later.

[sanxiyn]

Closing.