Date: Fri, 24 Dec 2021 16:26:32 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 260667] [vtnet] net driver leaks when detached Message-ID: <bug-260667-227@https.bugs.freebsd.org/bugzilla/>
next in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D260667 Bug ID: 260667 Summary: [vtnet] net driver leaks when detached Product: Base System Version: 13.0-STABLE Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: ghuckriede@blackberry.com Overview -------- 'if_vtnet' driver is missing the 'pfil_head_unregister()' during 'vtnet_detach()'. Included a patch, which assumes the fix for bug #256714 is also applied. Steps to Reproduce ------------------ Attach and then detach vnet device. # vmstat -m | grep pfil pfil 6 1K 5 128 # devctl attach pci0:0:4:0 virtio_pci1: <VirtIO PCI (legacy) Network adapter> port 0xc020-0xc03f mem 0xfeb92000-0xfeb92fff,0xfe004000-0xfe007fff irq 11 at device 4.0 on pci0 vtnet1: <VirtIO Networking Adapter> on virtio_pci1 pfil: duplicate head "vtnet1" 810.828154 [ 450] vtnet_netmap_attach vtnet attached txq=3D1, txd=3D2= 56 rxq=3D1, rxd=3D128 # devctl detach pci0:0:4:0 # vmstat -m | grep pfil pfil 7 1K 6 128 Actual Results -------------- Leaks 'pfil' memory at each detach. Expected Results ---------------- All memory allocated in attach is freed in the detach. Build Date & Hardware --------------------- root@freebsd:~ # uname -a FreeBSD freebsd 13.0-RELEASE FreeBSD 13.0-RELEASE #0 releng/13.0-n244733-ea31abc261f: Fri Apr 9 04:24:09 UTC 2021=20=20=20=20 root@releng1.nyi.freebsd.org:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64 Additional Information ---------------------- --=20 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-260667-227>