Date: Thu, 18 Jan 2024 22:32:12 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 276426] amd64: microcode update caused a page fault trying to send data to the logger Message-ID: <bug-276426-227-R0NIPPDptO@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-276426-227@https.bugs.freebsd.org/bugzilla/>
index | next in thread | previous in thread | raw e-mail
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276426 --- Comment #11 from John F. Carr <jfc@mit.edu> --- The stack trace goes through line 759 in trap.c. In my code that is the if statement here: if (td->td_critnest != 0 || WITNESS_CHECK(WARN_SLEEPOK | WARN_GIANTOK, NULL, "Kernel page fault") != 0) { trap_fatal(frame, eva); return (-1); } That prompted me to check td->td_critnest. The WITNESS_CHECK should return 0. I have WITNESS disabled. I have INVARIANTS enabled. Otherwise my kernel is GENERIC. Could we be getting a page fault handling a page fault? I don't know if that can be reconciled with the stack. -- You are receiving this mail because: You are the assignee for the bug.home | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-276426-227-R0NIPPDptO>