From a4a81d8eebdc1d209d034f62a082a5131e4242b5 Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Tue, 7 Feb 2017 18:09:14 +0100 Subject: [PATCH] s390/kdump: Use "LINUX" ELF note name instead of "CORE" In binutils/libbfd (bfd/elf.c) it is enforced that all s390 specific ELF notes like e.g. NT_S390_PREFIX or NT_S390_CTRS have "LINUX" specified as note name. Otherwise the notes are ignored. For /proc/vmcore we currently use "CORE" for these notes. Up to now this has not been a real problem because the dump analysis tool "crash" does not check the note name. But it will break all programs that use libbfd for processing ELF notes. So fix this and use "LINUX" for all s390 specific notes to comply with libbfd. Cc: stable@vger.kernel.org # v4.4+ Reported-by: Philipp Rudo Reviewed-by: Philipp Rudo Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/crash_dump.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c index f9293bfefb7f..408b4f4fda0f 100644 --- a/arch/s390/kernel/crash_dump.c +++ b/arch/s390/kernel/crash_dump.c @@ -329,7 +329,11 @@ static void *nt_init_name(void *buf, Elf64_Word type, void *desc, int d_len, static inline void *nt_init(void *buf, Elf64_Word type, void *desc, int d_len) { - return nt_init_name(buf, type, desc, d_len, KEXEC_CORE_NOTE_NAME); + const char *note_name = "LINUX"; + + if (type == NT_PRPSINFO || type == NT_PRSTATUS || type == NT_PRFPREG) + note_name = KEXEC_CORE_NOTE_NAME; + return nt_init_name(buf, type, desc, d_len, note_name); } /* -- 2.20.1