From 78ad175b3060aae058ed5d05ced2bc58714901cd Mon Sep 17 00:00:00 2001 From: Gleb Fotengauer-Malinovskiy Date: Tue, 2 Jun 2015 21:04:06 +0300 Subject: nptl: restore .interp section in libpthread.so In commit 02657da2cf4457804ed938ee08b8316249126444, .interp section was removed from libpthread.so. This led to an error: $ /lib64/libpthread.so.0 Native POSIX Threads Library by Ulrich Drepper et al Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Forced unwind support included. Segmentation fault (gdb) bt #0 0x00000000000055a6 in _exit@plt () Unfortunately, there is no way to add a regression test for the bug because .interp specifies the path to dynamic linker of the target system. [BZ #18479] * nptl/pt-interp.c: New file. * nptl/Makefile (libpthread-routines, libpthread-shared-only-routines): Add pt-interp. [$(build-shared) = yes] ($(objpfx)pt-interp.os): Depend on $(common-objpfx)runtime-linker.h. --- nptl/Makefile | 7 +++++-- nptl/pt-interp.c | 1 + 2 files changed, 6 insertions(+), 2 deletions(-) create mode 100644 nptl/pt-interp.c (limited to 'nptl') diff --git a/nptl/Makefile b/nptl/Makefile index d58324d590..530d14b9d4 100644 --- a/nptl/Makefile +++ b/nptl/Makefile @@ -33,7 +33,7 @@ routines = alloca_cutoff forward libc-lowlevellock libc-cancellation \ register-atfork unregister-atfork shared-only-routines = forward -libpthread-routines = nptl-init vars events version \ +libpthread-routines = nptl-init vars events version pt-interp \ pthread_create pthread_exit pthread_detach \ pthread_join pthread_tryjoin pthread_timedjoin \ pthread_self pthread_equal pthread_yield \ @@ -138,7 +138,8 @@ libpthread-routines = nptl-init vars events version \ # pthread_setgid pthread_setegid pthread_setregid \ # pthread_setresgid -libpthread-shared-only-routines = version pt-allocrtsig unwind-forcedunwind +libpthread-shared-only-routines = version pt-interp pt-allocrtsig \ + unwind-forcedunwind libpthread-static-only-routines = pthread_atfork # Since cancellation handling is in large parts handled using exceptions @@ -608,6 +609,8 @@ $(objpfx)banner.h: Banner generated += banner.h # Give libpthread.so an entry point and make it directly runnable itself. LDFLAGS-pthread.so += -e __nptl_main +# pt-interp.c exists just to get the runtime linker path into libpthread.so. +$(objpfx)pt-interp.os: $(common-objpfx)runtime-linker.h endif ifeq ($(run-built-tests),yes) diff --git a/nptl/pt-interp.c b/nptl/pt-interp.c new file mode 100644 index 0000000000..ecf1fe70df --- /dev/null +++ b/nptl/pt-interp.c @@ -0,0 +1 @@ +#include -- cgit 1.4.1