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Date: Mon, 17 Jun 2024 16:41:29 -0700 From: Roman Kisel <romank@...ux.microsoft.com> To: akpm@...ux-foundation.org, apais@...ux.microsoft.com, ardb@...nel.org, bigeasy@...utronix.de, brauner@...nel.org, ebiederm@...ssion.com, jack@...e.cz, keescook@...omium.org, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org, nagvijay@...rosoft.com, oleg@...hat.com, tandersen@...flix.com, vincent.whitchurch@...s.com, viro@...iv.linux.org.uk Cc: apais@...rosoft.com, ssengar@...rosoft.com, sunilmut@...rosoft.com, vdso@...bites.dev Subject: [PATCH 0/1] binfmt_elf, coredump: Log the reason of the failed core dumps A powerful way to diagnose crashes is to analyze the core dump produced upon the failure. Missing or malformed core dump files hinder these investigations. I'd like to propose changes that add logging as to why the kernel would not finish writing out the core dump file. These changes don't attempt to turn the code into a state machine with the numerical error codes. This is just the next step to not logging which is logging :). Please let me know what is good, bad and ugly with these changes! Signed-off-by: Roman Kisel <romank@...ux.microsoft.com> Roman Kisel (1): binfmt_elf, coredump: Log the reason of the failed core dumps fs/binfmt_elf.c | 48 +++++++++++++++++++++------- fs/coredump.c | 69 +++++++++++++++++++++++++++++++--------- include/linux/coredump.h | 4 +-- kernel/signal.c | 5 ++- 4 files changed, 96 insertions(+), 30 deletions(-) base-commit: 831bcbcead6668ebf20b64fdb27518f1362ace3a -- 2.45.2
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