Date: Tue, 10 Apr 2007 11:43:39 -0700 From: Barrett Lyon <blyon@blyon.com> To: current@freebsd.org Subject: failures with if_em on txcsum/rxcsum enabled Message-ID: <A1930A44-EBAF-46B0-96BD-5B4AE51C4884@blyon.com>
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I've been working on a number of problems related to the txcsum/
rxcsum options on if_em and if_mxge and with that stuff enabled while
talking to a large range of HTTP hosts, it's causing crashes. It
seems pretty consistent across the board with varying symptoms. This
was built from today's tree:
em0: discard frame w/o packet header
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0xc
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc06fd90c
stack pointer = 0x28:0xe38bc9b8
frame pointer = 0x28:0xe38bc9e0
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 26 (em0 taskq)
trap number = 12
panic: page fault
cpuid = 0
Uptime: 6m41s
Physical memory: 2039 MB
Dumping 245 MB:
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x200
fault code = supervisor read, page not present
instruction pointer = 0x20:0x200
stack pointer = 0x28:0xe38bc500
frame pointer = 0x28:0xe38bc510
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 26 (em0 taskq)
trap number = 12
panic: page fault
cpuid = 0
Uptime: 6m42s
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...
cpu_reset: Stopping other CPUs
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