Date: Mon, 30 Mar 2020 19:21:48 +0200 From: Johann Hanne <jml@...ne.name> To: musl@...ts.openwall.com Subject: User mode linux error when compiled with musl 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? Regards, Johann
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