Date: Tue, 25 May 2004 18:38:31 +0300 From: Panagiotis Astithas <past@noc.ntua.gr> To: FreeBSD Current <freebsd-current@freebsd.org> Subject: if_dc and trap on shutdown Message-ID: <40B36877.1070904@noc.ntua.gr>
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Hi all, on my supposedly rock-solid (as of late) HP Omnibook XE3, I still seem to get some interrupt storms rarely when booting. For the first time though, I got a trap as well when shutting down. The culprit seems to be the dc driver which gets an interrupt a bit late in the shutdown sequence. I usually get the storms when I reboot from Windows into FreeBSD *with* the netowrk cable plugged in. Before the last upgrade, I used to get storms with or without the cable plugged in, on occasion. This time though I had the laptop hibernated (ACPI S4BIOS) from FreeBSD when I was not connected and awaken with the network cable plugged in. This is what happenned when I tried to shut down. The following is a hand-copied output: -------------------------------------- [...] Waiting (max 60 seconds) for system process `bufdaemon' to stop...Interrupt storm detected on "irq: acpi0"; throttling interrupt source stopped [...] Shutting down ACPI Fatal trap 12: page fault while in kernel mode fault virtual address = 0x18 fault code = supervisor write, page not present instruction pointer = 0x8:0xc05b8054 stack pointer = 0x10:0xcd316cb0 frame pointer = 0x10:0xcd316ccc 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 = 22 (irq11: cbb0 cbb1+) kernel: type 12 trap, code=0 Stopped at dc_rxeof+0x168: movl %edx,0x18(%eax) db> tr dc_rxeof(c2b99000) at dc_rxeof+0x168 dc_intr(c2b99000) at dc_intr+0xef ithread_loop(c14f8800,cd316d48,c06b9980,0,c065d0f4) at ithread_loop+0x174 fork_exit(c04d92ec,c14f8800,cd316d48) at fork_exit+0x60 fork_trampoline() at fork_trampoline+0x8 --- trap 0x1, eip = 0, esp = 0xcd316d7c, ebp = 0 --- db> sh intrcnt irq0: clk 571043 irq1: atkbd0 6659 irq3: sio1 1 irq4: sio0 1 irq5: pcm0 uhci0 37227 irq6: fdc0 5 irq7: ppc0 1 irq8: rtc 730958 irq9: acpi0 17550 irq11: cbb0 cbb1+ 56 irq12: psm0 50115 irq13: npxo 1 irq14: ata0 17764 irq15: ata1 25900 -------------------------------------- The machine is a May 11 -current and unfortunately I don't have a debug kernel handy. You can find a standard dmesg in: http://noc.ntua.gr/~past/dmesg.HPXE3 Cheers, -- Panagiotis Astithas Electrical & Computer Engineer, PhD Network Management Center National Technical University of Athens, Greece
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