Date: Mon, 07 Mar 2005 08:09:54 -0800 From: othermark <atkin901@yahoo.com> To: freebsd-current@freebsd.org Subject: Re: fxp0 and vlan panic Message-ID: <d0hu20$jn$1@sea.gmane.org> References: <1107887237.793.26.camel@buffy.york.ac.uk> <20050226120253.O87543@ury.york.ac.uk> <20050305020343.GO31320@elvis.mu.org> <16937.62150.818165.837486@roam.psg.com>
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Randy Bush wrote: >> Just for the record, and for people not reading CVS commit logs, I >> committed a fix for this a few days ago and I will make sure to MFC >> it in time for 5.4-RELEASE. > > might this give me some help on occasional but repeated fxp > crashes under load? > > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0x80808517 > fault code = supervisor read, page not present > instruction pointer = 0x8:0xc047d2d0 > stack pointer = 0x10:0xd3f78c88 > frame pointer = 0x10:0xd3f78cac > 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 = 15 (irq5: fxp0) > [thread pid 15 tid 100008 ] > Stopped at fxp_intr_body+0xd0: cmpw $0,0(%esi) > db> trace > Tracing pid 15 tid 100008 td 0xc155fb80 > fxp_intr_body(c161a000,c161a000,40,ffffffff,c0630cb6) at > fxp_intr_body+0xd0 fxp_intr(c161a000,0,0,0,0) at fxp_intr+0x141 > ithread_loop(c1551a00,d3f78d48,0,0,0) at ithread_loop+0x1a8 > fork_exit(c04da530,c1551a00,d3f78d48) at fork_exit+0x7f > fork_trampoline() at fork_trampoline+0x8 > --- trap 0x1, eip = 0, esp = 0xd3f78d7c, ebp = 0 --- Hmm, can you get the panic to occur when interrupt coalescing is turned on? 'ifconfig fxp0 link0' I've loaded my -current boxes pretty hard and have not seen this panic, but I have interrupt coalescing turned on everywhere. -- othermark atkin901 at nospam dot yahoo dot com (!wired)?(coffee++):(wired);
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