On Tue, Sep 17, 2013 at 10:57:49PM +0100, Jason Gunthorpe wrote: > Hi Will,
Hi Jason, > I was just testing v3.12-rc1 (on kirkwood) and noticed that strace is > not working: Thanks for the report! > $ strace /bin/ls > mmap2(0xb6f79000, 9552, PROT_READ|PROT_WRITE, > MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6f79000 > close(3) = 0 > mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = > 0xb6fad000 > set_tls(0xb6fad4c0, 0xb6fadb98, 0xb6fb1050, 0xb6fad4c0, 0xb6fb1050) = -1 > ENOSYS (Function not implemented) > writev(2, [{"cannot set up thread-local stora"..., 36}, {"unknown error", > 13}, {"\n", 1}], 3cannot set up thread-local storage: unknown error > ) = 50 > exit_group(127) = ? > +++ exited with 127 +++ > > I determined that reverting your commit below makes strace work again. > I've tested 3.10.12 and it is OK. Hmm, so if you don't run with strace, does `/bin/ls' work as expected? From the trace above, it seems that set_tls is failing rather than anything in strace (unless of course, the trace is just plain wrong). > This happens with the latest git head for strace, as well as the 4.7 > release. > > Hopefully you can cook up a fix :) I'll take a look today, thanks. Will -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/