Date: Mon, 29 Jul 2024 23:59:57 +0000 From: bugzilla-noreply@freebsd.org To: threads@FreeBSD.org Subject: [Bug 280318] fork() can deadlock on rtld_phdr_lock Message-ID: <bug-280318-13406-qSZpKb3RUP@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-280318-13406@https.bugs.freebsd.org/bugzilla/> References: <bug-280318-13406@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280318 --- Comment #3 from commit-hook@FreeBSD.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=860c4d94ac46cee35a678cf3c9cdbd437dfed75e commit 860c4d94ac46cee35a678cf3c9cdbd437dfed75e Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2024-07-17 04:05:33 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2024-07-29 23:57:33 +0000 rtld: add LD_NO_DL_ITERATE_PHDR_AFTER_FORK env var which makes threaded fork ignore the phdr rtld lock, in particular allowing the dl_iterate_phdr() to block in callback. The cost is that the image started in this mode cannot use dl_iterate_phdr() after fork. PR: 280318 Sponsored by: The FreeBSD Foundation MFC after: 1 week libexec/rtld-elf/rtld.1 | 10 +++++++++- libexec/rtld-elf/rtld.c | 1 + libexec/rtld-elf/rtld.h | 1 + libexec/rtld-elf/rtld_lock.c | 7 +++++-- 4 files changed, 16 insertions(+), 3 deletions(-) -- You are receiving this mail because: You are the assignee for the bug.help
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