Date: Fri, 18 Dec 2020 23:17:24 +0000 From: bugzilla-noreply@freebsd.org To: gecko@FreeBSD.org Subject: [Bug 239873] www/firefox and mail/thunderbird don't like the new ASLR "stackgap" feature Message-ID: <bug-239873-21738-KeXDO8knsa@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-239873-21738@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239873 Konstantin Belousov <kib@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |kib@FreeBSD.org --- Comment #5 from Konstantin Belousov <kib@FreeBSD.org> --- (In reply to sigsys from comment #3) These are different stack gaps. One that is controlled by STKFGAP_DISABLE is at the bottom of the stacks and prevent stack overflow from stomping on the nearby mappings. ASLR stack gap is at top, and it only makes an impression of being useful. I just added an ELF feature control bit to disable it. I considered adding procctl(2) but decided that it is not very useful, ELF flag should be enough. -- You are receiving this mail because: You are the assignee for the bug.help
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