Date: Tue, 29 Sep 2015 00:05:15 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 203332] Fatal trap 12: rctl_enforce() at rctl_enforce Message-ID: <bug-203332-8-4fU4UFwkgk@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-203332-8@https.bugs.freebsd.org/bugzilla/> References: <bug-203332-8@https.bugs.freebsd.org/bugzilla/>
next in thread | previous in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203332 Mateusz Guzik <mjg@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mjg@FreeBSD.org Status|New |In Progress --- Comment #1 from Mateusz Guzik <mjg@FreeBSD.org> --- This looks like a use-after-free I mentioned some time ago. do_fork makes newproc runnable and fork1 does not pin it in any way, thus by the time do_fork returns the process could have already exited. Interestingly do_fork itself has this problem. Here faulting address 0xa8 matches what would be linked list access in a struct racct if read pointer was null. Pointer in question is nullified on process exit and initialized on fork. I'll ponder a reasonable fix. -- You are receiving this mail because: You are the assignee for the bug.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-203332-8-4fU4UFwkgk>