Message ID | 20091122.190339.232644560.davem@davemloft.net |
---|---|
State | RFC |
Delegated to: | David Miller |
Headers | show |
I don't know who's going to do this, but if it's me does anyone have a guide lying around ? :P ...or some useful links. Aaron On Sun, 2009-11-22 at 19:03 -0800, David Miller wrote: > From: Josip Rodin <joy@entuzijast.net> > Date: Sun, 22 Nov 2009 23:06:21 +0100 > > >> [ 82.663939] Kernel unaligned access at TPC[46d24c] > >> notifier_chain_register+0x10/0x38 > >> [ 82.671606] Unable to handle kernel paging request in mna handler<1> > >> at virtual address e00000a00b000046 > > That address is not only unaligned, it's completely out of range > for valid kernel virtual addresses. > > notifier_chain_register() and their ilk are pretty simply and > take constant kernel symbol addresses rather than, for example, > dynamically allocated memory or something else more easily > corrupted. So this is even more mysterious. > > Backtrace is: > > >> [ 82.759812] RPC: <atomic_notifier_chain_register+0x1c/0x44> > ... > >> [ 82.800022] I7: <kernel_init+0x38/0x204> > ... > >> [ 82.803917] Caller[0000000000782128]: kernel_init+0x38/0x204 > >> [ 82.809549] Caller[0000000000426df8]: kernel_thread+0x38/0x48 > >> [ 82.815268] Caller[000000000067bae0]: rest_init+0x18/0x60 > > And I can't see anything that registers notifiers from kernel_init(). > > I suspect the real caller of atomic_notifier_chain_register() is > being optimized out by tail-call optimizations so we can't see > exactly what it is. > > Can you build a test kernel with something like the following > patch applied and reproduce? Thanks. > > diff --git a/Makefile b/Makefile > index aa3e13a..d953cd3 100644 > --- a/Makefile > +++ b/Makefile > @@ -537,6 +537,8 @@ ifndef CONFIG_CC_STACKPROTECTOR > KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) > endif > > +KBUILD_CFLAGS += -fno-optimize-sibling-calls > + > ifdef CONFIG_FRAME_POINTER > KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls > else > > -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, Nov 23, 2009 at 11:16:59AM +0200, Aaron Scheiner wrote: > I don't know who's going to do this, but if it's me does anyone have a > guide lying around ? :P > > ...or some useful links. Yeah, the problem is, if you had just a single working Linux version on the machine, you could try these things on your own; but since you don't, you're depending on either cross-compiling or someone else compiling the kernel, *AND* building it into a bootable image. Maybe if you could plug the machine into a network with another machine which could serve the boot image over PXE or something...
Hey Joy The machine is currently connected to my home LAN. I powered it up from a remote location today via SSH -> Telnet (RSC) and executed some commands on the Solaris installation... I think that's pretty cool :P . My home network has DHCP server on it (Smoothwall) and two other machines running Ubuntu. One of the Ubuntu machines has been configured as a TFTP server (used it to hack a Mikrotik router a while back). In other words, I should(?) have the environment to boot this Sun machine via the network. As for the kernel, I found a guide today that should put me on the right track : http://wiki.debian.org/DebianInstaller/Modify/CustomKernel . I'll work on it a little later today :) . On Mon, 2009-11-23 at 23:34 +0100, Josip Rodin wrote: > On Mon, Nov 23, 2009 at 11:16:59AM +0200, Aaron Scheiner wrote: > > I don't know who's going to do this, but if it's me does anyone have a > > guide lying around ? :P > > > > ...or some useful links. > > Yeah, the problem is, if you had just a single working Linux version on the > machine, you could try these things on your own; but since you don't, you're > depending on either cross-compiling or someone else compiling the kernel, > *AND* building it into a bootable image. > > Maybe if you could plug the machine into a network with another machine > which could serve the boot image over PXE or something... > -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Tue, Nov 24, 2009 at 12:52:21AM +0200, Aaron Scheiner wrote: > My home network has DHCP server on it (Smoothwall) and two other > machines running Ubuntu. One of the Ubuntu machines has been configured > as a TFTP server (used it to hack a Mikrotik router a while back). In > other words, I should(?) have the environment to boot this Sun machine > via the network. > > As for the kernel, I found a guide today that should put me on the right > track : http://wiki.debian.org/DebianInstaller/Modify/CustomKernel . > > I'll work on it a little later today :) . While we're at it, you mentioned earlier that you tried Ubuntu Dapper (6.06) with 2.6.15 which also failed miserably - Ubuntu shipped a few more sparc releases other than that one, so you may get lucky with another one. A quick Google tells me that their 7.04 and 7.10 releases still had sparc, so try and find installer images from those.
On Mon, Nov 23, 2009 at 11:56:23PM +0100, Josip Rodin wrote: > On Tue, Nov 24, 2009 at 12:52:21AM +0200, Aaron Scheiner wrote: > > My home network has DHCP server on it (Smoothwall) and two other > > machines running Ubuntu. One of the Ubuntu machines has been configured > > as a TFTP server (used it to hack a Mikrotik router a while back). In > > other words, I should(?) have the environment to boot this Sun machine > > via the network. > > > > As for the kernel, I found a guide today that should put me on the right > > track : http://wiki.debian.org/DebianInstaller/Modify/CustomKernel . > > > > I'll work on it a little later today :) . > > While we're at it, you mentioned earlier that you tried Ubuntu Dapper (6.06) > with 2.6.15 which also failed miserably - Ubuntu shipped a few more sparc > releases other than that one, so you may get lucky with another one. A quick > Google tells me that their 7.04 and 7.10 releases still had sparc, so try > and find installer images from those. Oddly enough, once I actually figured out the right place to look on the web site, I could also easily find newer ones: http://cdimage.ubuntu.com/ports/releases/hardy/release/ubuntu-8.04.1-server-sparc.iso http://cdimage.ubuntu.com/ports/releases/intrepid/release/ubuntu-8.10-server-sparc.iso http://cdimage.ubuntu.com/ports/releases/jaunty/release/ubuntu-9.04-server-sparc.iso http://cdimage.ubuntu.com/ports/releases/karmic/release/ubuntu-9.10-server-sparc.iso
Booting both Ubuntu 9.10 and 8.10 results in this error : " boot: Allocated 64 Megs of memory at 0x40000000 for kernel Loaded kernel version 2.6.25 Loading initial ramdisk (6178206 bytes at 0xA1FF000000 phys, 0x40C00000 virt)... ERROR: Last Trap: Fast Data Access MMU Miss {2} ok " Interestingly, the machine returns to the boot prom instead of just dying altogether. Hope that helps :) Aaron On Tue, 2009-11-24 at 00:10 +0100, Josip Rodin wrote: > On Mon, Nov 23, 2009 at 11:56:23PM +0100, Josip Rodin wrote: > > On Tue, Nov 24, 2009 at 12:52:21AM +0200, Aaron Scheiner wrote: > > > My home network has DHCP server on it (Smoothwall) and two other > > > machines running Ubuntu. One of the Ubuntu machines has been configured > > > as a TFTP server (used it to hack a Mikrotik router a while back). In > > > other words, I should(?) have the environment to boot this Sun machine > > > via the network. > > > > > > As for the kernel, I found a guide today that should put me on the right > > > track : http://wiki.debian.org/DebianInstaller/Modify/CustomKernel . > > > > > > I'll work on it a little later today :) . > > > > While we're at it, you mentioned earlier that you tried Ubuntu Dapper (6.06) > > with 2.6.15 which also failed miserably - Ubuntu shipped a few more sparc > > releases other than that one, so you may get lucky with another one. A quick > > Google tells me that their 7.04 and 7.10 releases still had sparc, so try > > and find installer images from those. > > Oddly enough, once I actually figured out the right place to look on the > web site, I could also easily find newer ones: > http://cdimage.ubuntu.com/ports/releases/hardy/release/ubuntu-8.04.1-server-sparc.iso > http://cdimage.ubuntu.com/ports/releases/intrepid/release/ubuntu-8.10-server-sparc.iso > http://cdimage.ubuntu.com/ports/releases/jaunty/release/ubuntu-9.04-server-sparc.iso > http://cdimage.ubuntu.com/ports/releases/karmic/release/ubuntu-9.10-server-sparc.iso > -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
I just thought I'd let you know that OpenBSD's guys have managed to get OpenBSD running on this machine. Aaron On Thu, 2009-11-26 at 10:26 +0200, Aaron Scheiner wrote: > Booting both Ubuntu 9.10 and 8.10 results in this error : > " > boot: > Allocated 64 Megs of memory at 0x40000000 for kernel > Loaded kernel version 2.6.25 > Loading initial ramdisk (6178206 bytes at 0xA1FF000000 phys, 0x40C00000 > virt)... > ERROR: Last Trap: Fast Data Access MMU Miss > > {2} ok > " > > Interestingly, the machine returns to the boot prom instead of just > dying altogether. > > Hope that helps :) > > > Aaron > > On Tue, 2009-11-24 at 00:10 +0100, Josip Rodin wrote: > > On Mon, Nov 23, 2009 at 11:56:23PM +0100, Josip Rodin wrote: > > > On Tue, Nov 24, 2009 at 12:52:21AM +0200, Aaron Scheiner wrote: > > > > My home network has DHCP server on it (Smoothwall) and two other > > > > machines running Ubuntu. One of the Ubuntu machines has been configured > > > > as a TFTP server (used it to hack a Mikrotik router a while back). In > > > > other words, I should(?) have the environment to boot this Sun machine > > > > via the network. > > > > > > > > As for the kernel, I found a guide today that should put me on the right > > > > track : http://wiki.debian.org/DebianInstaller/Modify/CustomKernel . > > > > > > > > I'll work on it a little later today :) . > > > > > > While we're at it, you mentioned earlier that you tried Ubuntu Dapper (6.06) > > > with 2.6.15 which also failed miserably - Ubuntu shipped a few more sparc > > > releases other than that one, so you may get lucky with another one. A quick > > > Google tells me that their 7.04 and 7.10 releases still had sparc, so try > > > and find installer images from those. > > > > Oddly enough, once I actually figured out the right place to look on the > > web site, I could also easily find newer ones: > > http://cdimage.ubuntu.com/ports/releases/hardy/release/ubuntu-8.04.1-server-sparc.iso > > http://cdimage.ubuntu.com/ports/releases/intrepid/release/ubuntu-8.10-server-sparc.iso > > http://cdimage.ubuntu.com/ports/releases/jaunty/release/ubuntu-9.04-server-sparc.iso > > http://cdimage.ubuntu.com/ports/releases/karmic/release/ubuntu-9.10-server-sparc.iso > > > > > -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Makefile b/Makefile index aa3e13a..d953cd3 100644 --- a/Makefile +++ b/Makefile @@ -537,6 +537,8 @@ ifndef CONFIG_CC_STACKPROTECTOR KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) endif +KBUILD_CFLAGS += -fno-optimize-sibling-calls + ifdef CONFIG_FRAME_POINTER KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls else