Booting the putative 2.6.27-rc5-mm1 lineup on the g5 I see: io scheduler cfq registered proc_dir_entry '00' already registered Call Trace: [c00000017a0fbae0] [c000000000012540] unrecov_restore+0x98d8/0x1220c (unreliable) [c00000017a0fbb90] [c000000000149798] dst_error+0x117d3c/0x42ba04 [c00000017a0fbc40] [c000000000149c14] dst_error+0x1181b8/0x42ba04 [c00000017a0fbcc0] [c0000000001f9260] dst_error+0x1c7804/0x42ba04 [c00000017a0fbd60] [c0000000005ccc8c] _sinittext+0x25c8c/0x371d4 [c00000017a0fbde0] [c000000000009230] unrecov_restore+0x5c8/0x1220c [c00000017a0fbee0] [c0000000005a7d90] _sinittext+0xd90/0x371d4 [c00000017a0fbf90] [c000000000026db4] fpdisable+0xa6f4/0xa884 nvidiafb: Device ID: 10de0141 nvidiafb: CRTC0 analog not found nvidiafb: CRTC1 analog found from which I conclude a) someone broke powerpc's kallsyms processing and b) someone screwed up their procfs handling. The output of `nm -n vmlinux' is at http://userweb.kernel.org/~akpm/nm-n.txt. You'll see that c000000000012540 is actually somewhere inside proc_register(). This is stupid: g5:/usr/src/25> gdb vmlinux GNU gdb Red Hat Linux (6.3.0.0-1.21rh) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "ppc-yellowdog-linux-gnu"..."/usr/src/25/vmlinux": not in executable format: File format not recognized
2.6.27-rc5-mm1 mystery trace
Started by Andrew Morton on Sep 5, 2008 · 12 messages from 4 authors · Last reply Sep 8, 2008
open the first message on its own page
B Benjamin Herrenschmidt replied to Andrew Morton #
This is stupid: g5:/usr/src/25> gdb vmlinux GNU gdb Red Hat Linux (6.3.0.0-1.21rh) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "ppc-yellowdog-linux-gnu"..."/usr/src/25/vmlinux": not in executable format: File format not recognized probably there's some command line magic to make it work, but there shouldn't be.
Is this a 64 bits gdb ? Ben.
A Andrew Morton replied to Benjamin Herrenschmidt #
On Fri, 05 Sep 2008 13:42:44 +1000 Benjamin Herrenschmidt [off-list ref] wrote:
quoted
This is stupid: g5:/usr/src/25> gdb vmlinux GNU gdb Red Hat Linux (6.3.0.0-1.21rh) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "ppc-yellowdog-linux-gnu"..."/usr/src/25/vmlinux": not in executable format: File format not recognized probably there's some command line magic to make it work, but there shouldn't be.Is this a 64 bits gdb ?
I don't think so - it's whatever ydl4.1 gave me.
A 64-bit binary on a 64-bit machine Should Just Work. Maybe that's
me being simplistic.B Benjamin Herrenschmidt replied to Andrew Morton #
a) someone broke powerpc's kallsyms processing and b) someone screwed up their procfs handling.
I think the proc bug is old, might have to do with /proc/bus/pci... I have that on my G5 too with 2.6.26, I think I just forgot about it.. Care to give that untested patch a try ? powerpc: Always enable pci domains in /proc for 64 bits powerpc This patch always enable the use of the pci domain number in /proc on 64 bits ppc machines instead of the old pseries specific hack of testing for the buid which is meaningless on most machines. We also enable the compat code that makes domain 0 use the old format for the sake of the X server. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> --- Index: linux-work/arch/powerpc/kernel/pci-common.c ===================================================================
--- linux-work.orig/arch/powerpc/kernel/pci-common.c 2008-09-05 13:46:09.000000000 +1000
+++ linux-work/arch/powerpc/kernel/pci-common.c 2008-09-05 13:49:46.000000000 +1000@@ -53,8 +53,9 @@ static int global_phb_number; /* Global /* ISA Memory physical address */ resource_size_t isa_mem_base; -/* Default PCI flags is 0 */ -unsigned int ppc_pci_flags; +/* Default PCI flags is 0 on ppc32, modified at boot on ppc64 */ +unsigned int ppc_pci_flags = 0; + struct pci_controller *pcibios_alloc_controller(struct device_node *dev) {
@@ -669,15 +670,12 @@ void __devinit pci_process_bridge_OF_ran int pci_proc_domain(struct pci_bus *bus) { struct pci_controller *hose = pci_bus_to_host(bus); -#ifdef CONFIG_PPC64 - return hose->buid != 0; -#else + if (!(ppc_pci_flags & PPC_PCI_ENABLE_PROC_DOMAINS)) return 0; if (ppc_pci_flags & PPC_PCI_COMPAT_DOMAIN_0) return hose->global_number != 0; return 1; -#endif } void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
A Andrew Morton replied to Benjamin Herrenschmidt #
On Fri, 05 Sep 2008 13:54:22 +1000 Benjamin Herrenschmidt [off-list ref] wrote:
quoted
a) someone broke powerpc's kallsyms processing and b) someone screwed up their procfs handling.I think the proc bug is old, might have to do with /proc/bus/pci... I have that on my G5 too with 2.6.26, I think I just forgot about it.. Care to give that untested patch a try ?
uh, soon, hopfully. The wife pinched the monitor. I'd be more worried about the kallsyms non-workage?
B Benjamin Herrenschmidt replied to Andrew Morton #
On Thu, 2008-09-04 at 20:49 -0700, Andrew Morton wrote:
On Fri, 05 Sep 2008 13:42:44 +1000 Benjamin Herrenschmidt [off-list ref] wrote:quoted
quoted
This is stupid: g5:/usr/src/25> gdb vmlinux GNU gdb Red Hat Linux (6.3.0.0-1.21rh) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "ppc-yellowdog-linux-gnu"..."/usr/src/25/vmlinux": not in executable format: File format not recognized probably there's some command line magic to make it work, but there shouldn't be.Is this a 64 bits gdb ?I don't think so - it's whatever ydl4.1 gave me. A 64-bit binary on a 64-bit machine Should Just Work. Maybe that's me being simplistic.
But is it a 64 bits binary ? Ben.
B Benjamin Herrenschmidt replied to Andrew Morton #
On Thu, 2008-09-04 at 21:04 -0700, Andrew Morton wrote:
On Fri, 05 Sep 2008 13:54:22 +1000 Benjamin Herrenschmidt [off-list ref] wrote:quoted
quoted
a) someone broke powerpc's kallsyms processing and b) someone screwed up their procfs handling.I think the proc bug is old, might have to do with /proc/bus/pci... I have that on my G5 too with 2.6.26, I think I just forgot about it.. Care to give that untested patch a try ?uh, soon, hopfully. The wife pinched the monitor. I'd be more worried about the kallsyms non-workage?
yes, that's the harder part :-) somebody will have to dig. I don't have
the cycles today but next if if nobody raised a hand, I can have a look.
Ben.A Andrew Morton replied to Benjamin Herrenschmidt #
On Fri, 05 Sep 2008 14:36:41 +1000 Benjamin Herrenschmidt [off-list ref] wrote:
On Thu, 2008-09-04 at 20:49 -0700, Andrew Morton wrote:quoted
On Fri, 05 Sep 2008 13:42:44 +1000 Benjamin Herrenschmidt [off-list ref] wrote:quoted
quoted
This is stupid: g5:/usr/src/25> gdb vmlinux GNU gdb Red Hat Linux (6.3.0.0-1.21rh) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "ppc-yellowdog-linux-gnu"..."/usr/src/25/vmlinux": not in executable format: File format not recognized probably there's some command line magic to make it work, but there shouldn't be.Is this a 64 bits gdb ?I don't think so - it's whatever ydl4.1 gave me. A 64-bit binary on a 64-bit machine Should Just Work. Maybe that's me being simplistic.But is it a 64 bits binary ?
vmlinux? Yup. According to file(1).
G Geert Uytterhoeven replied to Andrew Morton #
On Thu, 4 Sep 2008, Andrew Morton wrote:
On Fri, 05 Sep 2008 14:36:41 +1000 Benjamin Herrenschmidt [off-list ref] wrote:quoted
On Thu, 2008-09-04 at 20:49 -0700, Andrew Morton wrote:quoted
On Fri, 05 Sep 2008 13:42:44 +1000 Benjamin Herrenschmidt [off-list ref] wrote:quoted
quoted
g5:/usr/src/25> gdb vmlinux GNU gdb Red Hat Linux (6.3.0.0-1.21rh) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "ppc-yellowdog-linux-gnu"..."/usr/src/25/vmlinux": not in executable format: File format not recognized probably there's some command line magic to make it work, but there shouldn't be.Is this a 64 bits gdb ?I don't think so - it's whatever ydl4.1 gave me. A 64-bit binary on a 64-bit machine Should Just Work. Maybe that's me being simplistic.But is it a 64 bits binary ?vmlinux? Yup. According to file(1).
No, gdb. With kind regards, Geert Uytterhoeven Software Architect Sony Techsoft Centre Europe The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium Phone: +32 (0)2 700 8453 Fax: +32 (0)2 700 8622 E-mail: Geert.Uytterhoeven@sonycom.com Internet: http://www.sony-europe.com/ A division of Sony Europe (Belgium) N.V. VAT BE 0413.825.160 · RPR Brussels Fortis · BIC GEBABEBB · IBAN BE41293037680010
B Benjamin Herrenschmidt replied to Andrew Morton #
quoted
quoted
A 64-bit binary on a 64-bit machine Should Just Work. Maybe that's me being simplistic.But is it a 64 bits binary ?vmlinux? Yup. According to file(1).
No, I'm talking about gdb :-0
IE. If it's a 32 bits gdb variant that cannot do 64 bits.. then it's
stuffed.
Is there a gdb64 binary somewhere ? Some distro have that.
Cheers,
Ben.P Paul Mackerras replied to Andrew Morton #
Andrew Morton writes:
a) someone broke powerpc's kallsyms processing and
That would be h8300-kallsyms-exclude-local-symbols.patch, which
excludes symbols starting with '.' on all architectures, despite the
name of the patch.
Paul.A Andrew Morton replied to Paul Mackerras #
On Mon, 8 Sep 2008 16:11:06 +1000 Paul Mackerras [off-list ref] wrote:
Andrew Morton writes:quoted
a) someone broke powerpc's kallsyms processing andThat would be h8300-kallsyms-exclude-local-symbols.patch, which excludes symbols starting with '.' on all architectures, despite the name of the patch.
Ah, thanks.