Date: Mon, 07 Nov 2022 17:17:14 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 267621] panic: page ... already unswappable Message-ID: <bug-267621-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D267621 Bug ID: 267621 Summary: panic: page ... already unswappable Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: vangyzen@FreeBSD.org We saw panic: page ... already unswappable on a downstream codebase. The page was wired. Another thread in physio() = -> vm_fault_quick_hold_pages() -> vm_page_wire_mapped() had just wired it. Can we simply relax the assertion? Or should we test for a wired page (with appropriate synchronization)? This is trivially reproduced by adding vm_page_wire(mc[0]) at the top of vm_pageout_flush(), which seems to be a fair repro due to the lack of synchronization. --=20 You are receiving this mail because: You are the assignee for the bug.=
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