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Message-ID: <4f5abddd-09f9-f05f-6cc6-719fc365b449@loongson.cn> Date: Tue, 12 Mar 2024 16:31:12 +0800 From: lixing <lixing@...ngson.cn> To: musl@...ts.openwall.com Subject: Re: loongarch64 atomics not working? 在 2024/3/12 上午10:06, Hongliang Wang 写道: > > > 在 2024/3/12 上午8:51, Rich Felker 写道: >> There's been a report of mksh hanging on loongarch64, at least under >> qemu, apparently hanging in a_cas_p: >> >> (gdb) run >> Starting program: /mksh >> ^C >> Program received signal SIGINT, Interrupt. >> a_cas_p (p=0x120054288 <vdso_func>, t=0x12003b970 <cgt_init>, >> s=0x7fffffffc34c) >> at ./src/internal/atomic.h:94 >> warning: 94 ./src/internal/atomic.h: No such file or directory >> (gdb) bt >> #0 a_cas_p (p=0x120054288 <vdso_func>, t=0x12003b970 <cgt_init>, >> s=0x7fffffffc34c) at ./src/internal/atomic.h:94 >> #1 cgt_init (clk=0, ts=0x7ffffffefb60) at src/time/clock_gettime.c:51 >> #2 0x000000012003ba4c in __clock_gettime (clk=clk@...ry=0, >> ts=ts@...ry=0x7ffffffefb60) at src/time/clock_gettime.c:67 >> #3 0x000000012003830c in gettimeofday (tv=tv@...ry=0x7ffffffefba0, >> tz=tz@...ry=0x0) at src/time/gettimeofday.c:9 >> #4 0x000000012002f098 in change_winsz () at var.c:1718 >> #5 0x0000000120000348 in main_init (lp=<synthetic pointer>, >> sp=<synthetic pointer>, argv=0x7ffffffefd18, argc=1) at main.c:369 >> #6 main (argc=<optimized out>, argv=<optimized out>) at main.c:738 >> >> This is very basic usage, just the vdso clock_gettime init code trying >> to replace a pointer atomically. Is it working on real hardware? I'm >> trying to figure out if this is a qemu bug, or if the asm or the asm >> argument constraints are wrong in musl's >> arch/loongarch64/atomic_arch.h. >> >> Rich >> > > We will test it on real hardware to confirm if it can work as soon as > possible. > > Regards, > Hongliang Wang Hi, Rich We've tested static and dynamic build mksh with commit id cbb8a0196aab53165a35339fd91ade599d184f both works ok. We compiled qemu 8.2.2 with the following configuration: ./configure --prefix=/usr --target-list=loongarch64-linux-user --disable-werror --static --disable-docs then run with qemu-loongarch64 ./mksh without hang. Thanks, XingLi
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