[Bug 275061] net/realtek-re-kmod causes memory modification after free
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Date: Mon, 13 Nov 2023 20:39:51 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275061
Bug ID: 275061
Summary: net/realtek-re-kmod causes memory modification after
free
Product: Ports & Packages
Version: Latest
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: Individual Port(s)
Assignee: ale@FreeBSD.org
Reporter: karels@freebsd.org
Flags: maintainer-feedback?(ale@FreeBSD.org)
Assignee: ale@FreeBSD.org
Created attachment 246276
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=246276&action=edit
crashinfo output for one crash
I tried to switch a 15-CURRENT system from em interface to re using the driver
from packages today. It caused crashes twice while the system was still
starting up before I gave up. One was in nfs code, one in tcp code, allocating
an mbuf. The memory was modified at an offset of 8, changing deadc0de to
deadbdc2. I'll attach a crashinfo report. The system has been running fairly
reliably. It has local kernel modifications, but not in the network code.
Background info:
package:
realtek-re-kmod-198.00_3 Kernel driver for Realtek PCIe Ethernet
Controllers
The module appears to have been updated Oct. 27, and is still current.
boot messages:
re0: <Realtek PCIe 2.5GbE Family Controller> port 0x6000-0x60ff mem
0x44000000-0x4400ffff,0x44010000-0x44013fff at device 0.0 on pci4
re0: Using Memory Mapping!
re0: Using 1 MSI-X message
re0: ASPM disabled
re0: version:1.98.00
re0: Ethernet address: d8:5e:d3:xx:xx:xx
pciconf -lv:
re0@pci0:5:0:0: class=0x020000 rev=0x05 hdr=0x00 vendor=0x10ec device=0x8125
subvendor=0x1458 subdevice=0xe000
vendor = 'Realtek Semiconductor Co., Ltd.'
device = 'RTL8125 2.5GbE Controller'
class = network
subclass = ethernet
The kernel was at e716630d4cf8 from about Nov. 9.
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