https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197535
Bug ID: 197535
Summary: [re] [panic] if_re (Realtek 8168) causes memory write
after free and kernel panic
Product: Base System
Version: 11.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Flags: mfc-stable10?
Created attachment 152865
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=152865&action=edit
Dmesg and kernel panic on CURRENT
When I set the network interface address, I get a bunch of "Memory modified
after free" messages:
Memory modified after free 0xfffff800039de800(2048) val=ffffffff @
0xfffff800039de800
Memory modified after free 0xfffff800039d4800(2048) val=ffffffff @
0xfffff800039d4800
If I wait long enough (a couple of minutes) I get a kernel panic.
I attach an example (dmesg + kernel panic)
I've tested it using 10.1-STABLE, same messages after ifconfig, but the kernel
panic is different.
On 10, I see really often the value 0x3201c040 causing segmentation fault (!),
but I don't know where it comes from.
About the messages, it could be that the init procedure of re(4) cannot
correctly stop the device (a normal Realtek 8168) and the dma address are
rewritten by receiving packets.
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