Hi, I have produced a config which doesn't boot correctly on either of my computers with v2.6.26-rc9. The first problem is with my laptop, which hangs on boot, see screenshot (sorry for the bad quality, I was in a hurry): http://folk.uio.no/vegardno/linux/DSCF3026.JPG I figured there's something wrong with ACPI PCI irq routing as I'm missing a message that shows up in my usual configs: calling ide_scan_pcibus+0x0/0xf0 ICH8M: IDE controller (0x8086:0x2850 rev 0x03) at PCI slot 0000:00:1f.1 --- HERE: --- ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 18 ---- ICH8M: not 100% native mode: will probe irqs later ...and as can be seen in the screenshot, ide-cd "lost interrupt". Unfortunately, I don't have a serial line on this machine, so it's hard to get the full log. (Maybe I can try netconsole, it seems to be up by the time this happens.) (I also tried booting with acpi=off, acpi=noirq, pci=noacpi, to no avail.) Note that this does not seem to be a regression; I get the same thing with -rc8 as well. I'm guessing it's config-induced, here are my config changes that triggered it: http://folk.uio.no/vegardno/linux/config-diff I'll make a guess for the NUMA/ACPI stuff. And this is the full config: http://folk.uio.no/vegardno/linux/config-bisect I decided to also try this kernel with my desktop machine. This one boots (probably because ACPI is disabled?), but I get the following warning: [ 0.000000] Begin SRAT table scan.... [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at arch/x86/mm/ioremap.c:553 early_ioremap+0x1c1/0x200() [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.26-rc9 #201 [ 0.000000] [<c0157d6f>] warn_on_slowpath+0x4f/0x70 [ 0.000000] [<c01708db>] ? up+0x2b/0x40 [ 0.000000] [<c01586f1>] ? release_console_sem+0x1c1/0x1f0 [ 0.000000] [<c05c0132>] ? _spin_unlock_irqrestore+0x32/0x70 [ 0.000000] [<c05c0143>] ? _spin_unlock_irqrestore+0x43/0x70 [ 0.000000] [<c0158705>] ? release_console_sem+0x1d5/0x1f0 [ 0.000000] [<c0158aff>] ? vprintk+0x1cf/0x430 [ 0.000000] [<c0158b0b>] ? vprintk+0x1db/0x430 [ 0.000000] [<c07c0b24>] ? __early_set_fixmap+0xb4/0xd0 [ 0.000000] [<c07c1231>] early_ioremap+0x1c1/0x200 [ 0.000000] [<c07bd48e>] get_memcfg_from_srat+0x15e/0x6d0 [ 0.000000] [<c01314be>] ? post_set+0x4e/0x50 [ 0.000000] [<c01315fa>] ? generic_get_mtrr+0x2a/0x100 [ 0.000000] [<c07c154d>] setup_memory+0xd/0x280 [ 0.000000] [<c07b3c7e>] setup_arch+0x2ee/0x4e0 [ 0.000000] [<c0158d7b>] ? printk+0x1b/0x20 [ 0.000000] [<c07ab842>] start_kernel+0x82/0x390 [ 0.000000] [<c07ab028>] i386_start_kernel+0x8/0x10 [ 0.000000] ======================= [ 0.000000] ---[ end trace 4eaa2a86a8e2da22 ]--- [ 0.000000] failed to get NUMA memory information from SRAT table [ 0.000000] NUMA - single node, flat memory mode What really puzzles me is the line number of the WARN -- it says arch/x86/mm/ioremap.c:553. But this line does not contain any WARNs. In fact, it's not even the right function. But this is a clean v2.6.26-rc9 compile, as can be seen from the kernel version above. There's also one a bit later: [ 7.746346] please boot with early_ioremap_debug and report the dmesg. [ 7.746460] ------------[ cut here ]------------ [ 7.746569] WARNING: at arch/x86/mm/ioremap.c:524 check_early_ioremap_leak+0x3f/0x50() See full dmesg at: http://folk.uio.no/vegardno/linux/dmesg-2.6.26-rc9 With early_ioremap_debug enabled: http://folk.uio.no/vegardno/linux/dmesg-early_ioremap_debug My apologies if I got the recipients wrong; I picked them off the git-log for relevant files. Please Cc in the right direction if needed :-) Thanks! Vegard -- "The animistic metaphor of the bug that maliciously sneaked in while the programmer was not looking is intellectually dishonest as it disguises that the error is the programmer's own creation." -- E. W. Dijkstra, EWD1036 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
