Len Brown <[EMAIL PROTECTED]> writes:
> e1000 faults in 2.6.20-git, while 2.6.20 worked fine.
>
> System is a D875PBZ with LOM.
>
> clues?
I'm guessing this is an old bug found by the following bit of
debug coded added into since v2.6.20
+#ifdef CONFIG_DEBUG_SHIRQ
+ if (irqflags & IRQF_SHARED) {
+ /*
+ * It's a shared IRQ -- the driver ought to be prepared for it
+ * to happen immediately, so let's make sure....
+ * We do this before actually registering it, to make sure that
+ * a 'real' IRQ doesn't run in parallel with our fake
+ */
+ if (irqflags & IRQF_DISABLED) {
+ unsigned long flags;
+
+ local_irq_save(flags);
+ handler(irq, dev_id);
+ local_irq_restore(flags);
+ } else
+ handler(irq, dev_id);
+ }
+#endif
I don't have a clue why the e1000 wasn't ready though.
Eric
>
> Bringing up loopback interface: [ OK ]
> Bringing up interface eth0: BUG: unable to handle kernel NULL pointer
> dereference at virtual address 00000000
> printing eip:
> *pde = 3747c001
> Oops: 0000 [#1]
> SMP
> Modules linked in: dm_mod video thermal sbs i2c_ec fan button dock battery
> asus_acpi ac lp intel_agp agpgart ehci_hcd parport_serial parpt
> CPU: 0
> EIP: 0060:[<00000000>] Not tainted VLI
> EFLAGS: 00010246 (2.6.20-g724339d7 #32)
> EIP is at _stext+0x3fefed10/0x14
> eax: c21cd3a0 ebx: f8840000 ecx: 00000000 edx: c22d2e44
> esi: c21cd3a0 edi: 00000000 ebp: c21cd564 esp: f755de6c
> ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
> Process ip (pid: 2975, ti=f755d000 task=f75590b0 task.ti=f755d000)
> Stack: c02a2077 fffffff4 f7987404 00000000 c02a1fc3 c0140cb5 00000010 012321b4
> c21cd3a0 c21cd000 c21cd000 00000000 c02a1a71 c21cd000 c21cd000 c21cd3a0
> 00000000 c21cd3a0 00000000 c02a4916 c21cd000 00001003 00001002 c03b3751
> Call Trace:
> [<c02a2077>] e1000_intr+0xb4/0x107
> [<c02a1fc3>] e1000_intr+0x0/0x107
> [<c0140cb5>] request_irq+0xa5/0xcc
> [<c02a1a71>] e1000_request_irq+0xad/0xe6
> [<c02a4916>] e1000_open+0x43/0xbd
> [<c03b3751>] dev_open+0x2b/0x62
> [<c03b224d>] dev_change_flags+0x47/0xe4
> [<c03eb20e>] devinet_ioctl+0x250/0x56d
> [<c03b3348>] dev_ifsioc+0x113/0x38d
> [<c021f4ee>] copy_to_user+0x2d/0x43
> [<c03a9a28>] sock_ioctl+0x19f/0x1be
> [<c03a9889>] sock_ioctl+0x0/0x1be
> [<c0168767>] do_ioctl+0x1f/0x62
> [<c01689ee>] vfs_ioctl+0x244/0x256
> [<c0168a33>] sys_ioctl+0x33/0x4c
> [<c0103d88>] sysenter_past_esp+0x5d/0x81
> =======================
> Code: Bad EIP value.
> EIP: [<00000000>] _stext+0x3fefed10/0x14 SS:ESP 0068:f755de6c
> /etc/sysconfig/network-scripts/ifup-eth: line 272: 2975 Segmentation fault ip
> link set dev ${REALDEVICE} up
> Failed to bring up eth0.
> [FAILED]
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
