[BUG somewhere] 2.6.0-test8 irq.c, IRQ_INPROGRESS ?

["M.H.VanLeeuwen" <vanl@megsinet.net>]

Hi,

I'm seeing an NMI Watchdog detected LOCKUP go away when I revert this patch
previously added into test8.

Any help appreciated.
Martin

diff -Nru a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
--- a/arch/i386/kernel/irq.c    Fri Oct 17 14:43:50 2003
+++ b/arch/i386/kernel/irq.c    Fri Oct 17 14:43:50 2003
@@ -378,7 +380,7 @@
        spin_lock_irqsave(&desc->lock, flags);
        switch (desc->depth) {
        case 1: {
-               unsigned int status = desc->status & ~IRQ_DISABLED;
+               unsigned int status = desc->status & ~(IRQ_DISABLED | IRQ_INPROGRESS);
                desc->status = status;
                if ((status & (IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
                        desc->status = status | IRQ_REPLAY;

EIP is at .text.lock.8390+0x39/0x63 which is in ei_start_xmit() in 8390.c
at the first spin_lock_irqsave().

I hand copied the data from the console, what else is interesting/necessary?

First notices after booting into test8 and the system went silent when starting X,
since /home is NFS mounted go generate network and IDE activity.

Reproducible by doing all 3 of these (any 2 and the system stays alive, longer
than I want to wait)

1. ping flood  A->B
2. ping flood  B->A
3. find and grep for garbage from IDE on B's /dev/md/X filesystem

System B is SMP dual Celeron 466Mhz.

Eth interface:

isapnp: Scanning for PnP cards...
isapnp: Card 'SMC EZ Card (1660)'
isapnp: 1 Plug & Play card detected total
pnp: Device 00:01.00 activated.
ne.c: ISAPnP reports Generic PNP at i/o 0x220, irq 5.
ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)
Last modified Nov 1, 2000 by Paul Gortmaker
NE*000 ethercard probe at 0x220: 00 e0 29 3c 1f 11
eth0: NE2000 found at 0x220, using IRQ 5.


IDE interface:

PIIX4: IDE controller at PCI slot 0000:00:07.1
PIIX4: chipset revision 1
PIIX4: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:pio, hdb:pio
    ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:pio, hdd:pio
HPT366: onboard version of chipset, pin1=1 pin2=2
HPT366: IDE controller at PCI slot 0000:00:13.0
HPT366: chipset revision 1
HPT366: 100% native mode on irq 18
    ide2: BM-DMA at 0xdc00-0xdc07, BIOS settings: hde:pio, hdf:pio
    ide3: BM-DMA at 0xe800-0xe807, BIOS settings: hdg:pio, hdh:pio
hde: WDC WD400BB-32AUA1, ATA DISK drive
ide2 at 0xd400-0xd407,0xd802 on irq 18
hdg: ST340810A, ATA DISK drive
ide3 at 0xe000-0xe007,0xe402 on irq 18
hde: max request size: 128KiB
hde: 78165360 sectors (40020 MB) w/2048KiB Cache, CHS=65535/16/63, UDMA(66)
 /dev/ide/host2/bus0/target0/lun0: p1 p2 p3 p4 < p5 p6 p7 p8 p9 >
hdg: max request size: 128KiB
hdg: 78165360 sectors (40020 MB) w/2048KiB Cache, CHS=65535/16/63, UDMA(66)
 /dev/ide/host3/bus0/target0/lun0: p1 p2 p3 p4 < p5 p6 p7 p8 p9 >

/proc/interrupts (currently running 2.6.0-test8)

          CPU0       CPU1
  0:   52531411         84    IO-APIC-edge  timer
  1:      10288          1    IO-APIC-edge  i8042
  2:          0          0          XT-PIC  cascade
  5:    1908410   66015823    IO-APIC-edge  NE2000
  8:          1          0    IO-APIC-edge  rtc
 12:      56098          1    IO-APIC-edge  i8042
 16:    3663003          0   IO-APIC-level  r128@PCI:1:0:0
 18:     162982     300769   IO-APIC-level  ide2, ide3
NMI:   52531430   52531316
LOC:   52544445   52544450
ERR:         42
MIS:        999