Date: Tue, 31 Mar 2020 13:42:36 -0400 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: User mode linux error when compiled with musl On Mon, Mar 30, 2020 at 07:21:48PM +0200, Johann Hanne wrote: > Hi, > > I'm compiling user mode linux (kernel 5.5) against musl (toolchain > from musl.cc, tried gcc 6 and gcc 9) and getting the following error > when booting: > -- > Run /init as init process > userspace - ptrace set fp regs failed, errno = 14 > Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b > -- > > build command: make ARCH=um LD_FLAGS_CMDLINE="-static" > CROSS_COMPILE=x86_64-linux-musl- > > run command: ./linux initrd=test.cpio.gz > > test.cpio.gz contains a statically linked "Hello world" init, which > works when UML is built against the host cc with glibc (Ubuntu > 16.04, gcc 5, also with "-static"). > > Any ideas? Sorry, I don't have any and don't know enough about how UML works to have a good guess. I'd start by trying to identify exactly where that error message is coming from (probably somewhere in kernel code) and look for what leads up to it. Rich
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