From: Net L. <net...@li...> - 2005-02-03 18:38:53
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I'm trying to run a 2.4.28 guest kernel (with SKAS) on FC3 and it blows up almost immediately in the boot process with: Checking that ptrace can change system call numbers...<0> Kernel panic: check_ptrace : expected SIGTRAP, got status = 256 In idle task - not syncing <6>SysRq : Show Regs EIP: 0000:[<00000000>] CPU: 0 Not tainted EFLAGS: 00000000 Not tainted EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000 ESI: 00000000 EDI: 00000000 EBP: 00000000 DS: 0000 ES: 0000 Call Trace: [<0805d5fa>] [<08054c8b>] [<0804ca09>] [<080bf294>] [<0804cfb9>] [<080494b2>] [<080bf294>] [<08049459>] [<080bf2b9>] [<080bf294>] [<080b9595>] [<080bf294>] [<080b9574>] [<080bf294>] [<080bf065>] [<080bf294>] [<080bea11>] This seems to be a FC3 related issue, as the same kernel boots ok on RHES3 and RH9 hosts. Anyone seen this problem before, or know of a solution? -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Lonni J Friedman net...@li... LlamaLand http://netllama.linux-sxs.org |
From: Jeff D. <jd...@ad...> - 2005-02-03 20:02:03
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net...@li... said: > I'm trying to run a 2.4.28 guest kernel (with SKAS) on FC3 and it > blows up almost immediately in the boot process with: I've had all sorts of problems with FC3 hosts (on x86_64, but it looks like i386 is just as broken). There was a 2.6.9 kernel that worked OK, and I just dropped back to it when an update gave me yet another broken host kernel. FWIW, the current kernel seems OK. Jeff |
From: Net L. <net...@li...> - 2005-02-03 20:20:46
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On Thu, 3 Feb 2005, Jeff Dike wrote: > net...@li... said: > > I'm trying to run a 2.4.28 guest kernel (with SKAS) on FC3 and it > > blows up almost immediately in the boot process with: > > I've had all sorts of problems with FC3 hosts (on x86_64, but it looks like > i386 is just as broken). There was a 2.6.9 kernel that worked OK, and I just > dropped back to it when an update gave me yet another broken host kernel. I honestly didn't know that I could use the FC3 kernels for the host. I had built my own vanilla 2.6.10 with the assorted 'bb' patches. Do i need to rebuild the FC3 kernel RPM with UML patches applied, or does the standard FC3 kernel already have full SKAS support? > FWIW, the current kernel seems OK. kernel-2.6.10-1.760 ? -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Lonni J Friedman net...@li... LlamaLand http://netllama.linux-sxs.org |
From: Blaisorblade <bla...@ya...> - 2005-02-03 20:40:03
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On Thursday 03 February 2005 20:03, Net Llama! wrote: > On Thu, 3 Feb 2005, Jeff Dike wrote: > > net...@li... said: > > > I'm trying to run a 2.4.28 guest kernel (with SKAS) on FC3 and it > > > blows up almost immediately in the boot process with: > > > > I've had all sorts of problems with FC3 hosts (on x86_64, but it looks > > like i386 is just as broken). There was a 2.6.9 kernel that worked OK, > > and I just dropped back to it when an update gave me yet another broken > > host kernel. > > I honestly didn't know that I could use the FC3 kernels for the host. I > had built my own vanilla 2.6.10 with the assorted 'bb' patches. Do i need > to rebuild the FC3 kernel RPM with UML patches applied, or does the > standard FC3 kernel already have full SKAS support? IIRC not... (someone posted / discussed about "ported" patches for the FC3 kernel). > > FWIW, the current kernel seems OK. > > kernel-2.6.10-1.760 ? -- Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 http://www.user-mode-linux.org/~blaisorblade |
From: Jeff D. <jd...@ad...> - 2005-02-03 21:58:29
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net...@li... said: > I honestly didn't know that I could use the FC3 kernels for the host. > I had built my own vanilla 2.6.10 with the assorted 'bb' patches. Do > i need to rebuild the FC3 kernel RPM with UML patches applied, or does > the standard FC3 kernel already have full SKAS support? No, it doesn't. I've been playing with skas0 on this box, so I haven't needed the skas patch for it. > kernel-2.6.10-1.760 ? 2.6.10-1.741_FC3smp is what I have right now. And, I have to be less certain that it's a good one. I'm running stock 2.6.10 now, and that seems OK, and I think the FC3 1.760 is OK too, but not positive. |
From: Net L. <net...@li...> - 2005-02-03 22:53:08
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On Thu, 3 Feb 2005, Jeff Dike wrote: > net...@li... said: > > I honestly didn't know that I could use the FC3 kernels for the host. > > I had built my own vanilla 2.6.10 with the assorted 'bb' patches. Do > > i need to rebuild the FC3 kernel RPM with UML patches applied, or does > > the standard FC3 kernel already have full SKAS support? > > No, it doesn't. I've been playing with skas0 on this box, so I haven't needed > the skas patch for it. pardon my ignorance, but what is skas0, and where or how can i impliment it? > > kernel-2.6.10-1.760 ? > > 2.6.10-1.741_FC3smp is what I have right now. And, I have to be less certain > that it's a good one. I'm running stock 2.6.10 now, and that seems OK, and > I think the FC3 1.760 is OK too, but not positive. I guess this loops back to my question about on skas0, since i'm running a 2.6.10 stock kernel. thanks. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Lonni J Friedman net...@li... LlamaLand http://netllama.linux-sxs.org |
From: Jeff D. <jd...@ad...> - 2005-02-04 00:23:44
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net...@li... said: > pardon my ignorance, but what is skas0, and where or how can i > impliment it? See my incremental patches page - http://user-mode-linux.sf.net/patches.html In short, it's a BlaisorBlade brainstorm (idea by him, implementation by me and Bodo) which gives you some of the performance and all of the security of skas, without needing to patch the host. Jeff |
From: Net Llama! <net...@li...> - 2005-02-04 00:40:18
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On 02/03/2005 06:48 PM, Jeff Dike wrote: > net...@li... said: > >>pardon my ignorance, but what is skas0, and where or how can i >>impliment it? > > > See my incremental patches page - http://user-mode-linux.sf.net/patches.html > > In short, it's a BlaisorBlade brainstorm (idea by him, implementation by me > and Bodo) which gives you some of the performance and all of the security of > skas, without needing to patch the host. Interesting, thanks. Unless i'm missing someething, this looks like its for a 2.6.x guest kernel only? -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ L. Friedman net...@li... Linux Step-by-step & TyGeMo: http://netllama.ipfox.com 16:35:01 up 33 days, 0 min, 1 user, load average: 1.11, 1.24, 0.83 |
From: Blaisorblade <bla...@ya...> - 2005-02-04 02:12:24
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On Friday 04 February 2005 01:40, Net Llama! wrote: > On 02/03/2005 06:48 PM, Jeff Dike wrote: > > net...@li... said: > >>pardon my ignorance, but what is skas0, and where or how can i > >>impliment it? > > > > See my incremental patches page - > > http://user-mode-linux.sf.net/patches.html > > > > In short, it's a BlaisorBlade brainstorm (idea by him, implementation by > > me and Bodo) which gives you some of the performance and all of the > > security of skas, without needing to patch the host. > > Interesting, thanks. Unless i'm missing someething, this looks like its > for a 2.6.x guest kernel only? Yes, and still development - only (welcome as a tester, not for production use)... given its "development" status, I don't think that it will be back-ported to 2.4 guests... if you want absolute stability you won't run skas0 anyway. Also, 2.4 is lagging *a lot*, since new development has to happen on 2.6 (and just keeping up-to-date is very time-consuming). -- Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 http://www.user-mode-linux.org/~blaisorblade |
From: Jeff D. <jd...@ad...> - 2005-02-04 02:16:45
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net...@li... said: > Interesting, thanks. Unless i'm missing someething, this looks like > its for a 2.6.x guest kernel only? What you're missing is that I'm in the process of porting the 2.6 patches back to 2.4, so this will show up there at some point. Jeff |
From: Net L. <net...@li...> - 2005-02-08 18:36:37
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On Thu, 3 Feb 2005, Jeff Dike wrote: > net...@li... said: > > pardon my ignorance, but what is skas0, and where or how can i > > impliment it? > > See my incremental patches page - http://user-mode-linux.sf.net/patches.html > > In short, it's a BlaisorBlade brainstorm (idea by him, implementation by me > and Bodo) which gives you some of the performance and all of the security of > skas, without needing to patch the host. Finally got around to trying this, and i'm having problems. i pulled 2.6.11-rc3 and patched it to -mm3 w/o issue. Now the skas0 patch that is supposedly for 2.6.11-rc3-mm3 has rejects: patching file arch/um/include/tlb.h Hunk #1 FAILED at 39. 1 out of 1 hunk FAILED -- saving rejects to file arch/um/include/tlb.h.rej patching file arch/um/kernel/skas/include/skas.h Hunk #2 FAILED at 23. 1 out of 2 hunks FAILED -- saving rejects to file arch/um/kernel/skas/include/skas.h.rej patching file arch/um/kernel/skas/mem_user.c Hunk #1 FAILED at 3. Hunk #2 succeeded at 159 (offset 2 lines). 1 out of 2 hunks FAILED -- saving rejects to file arch/um/kernel/skas/mem_user.c.rej patching file arch/um/kernel/skas/tlb.c Hunk #2 FAILED at 18. Hunk #3 FAILED at 27. Hunk #4 succeeded at 16 with fuzz 2 (offset -31 lines). Hunk #5 FAILED at 25. Hunk #6 FAILED at 44. Hunk #7 FAILED at 59. Hunk #8 FAILED at 74. Hunk #9 FAILED at 97. Hunk #10 succeeded at 244 with fuzz 2 (offset -11 lines). 7 out of 10 hunks FAILED -- saving rejects to file arch/um/kernel/skas/tlb.c.rej patching file arch/um/kernel/tlb.c Hunk #1 FAILED at 9. Hunk #2 succeeded at 27 (offset -2 lines). Hunk #3 FAILED at 89. Hunk #4 FAILED at 110. Hunk #5 FAILED at 128. Hunk #6 FAILED at 143. Hunk #7 FAILED at 155. Hunk #8 FAILED at 173. Hunk #9 succeeded at 90 with fuzz 1 (offset -99 lines). 7 out of 9 hunks FAILED -- saving rejects to file arch/um/kernel/tlb.c.rej patching file arch/um/kernel/tt/tlb.c Hunk #1 FAILED at 17. Hunk #2 succeeded at 23 with fuzz 2 (offset -31 lines). Hunk #3 succeeded at 62 (offset -2 lines). Hunk #4 FAILED at 84. Hunk #5 FAILED at 99. Hunk #6 FAILED at 137. 4 out of 6 hunks FAILED -- saving rejects to file arch/um/kernel/tt/tlb.c.rej patching file arch/um/kernel/uml.lds.S Surely, i'm missing something obvious here? -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Lonni J Friedman net...@li... LlamaLand http://netllama.linux-sxs.org |
From: Blaisorblade <bla...@ya...> - 2005-02-03 19:59:20
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On Thursday 03 February 2005 18:21, Net Llama! wrote: > I'm trying to run a 2.4.28 guest kernel (with SKAS) on FC3 and it blows up > almost immediately in the boot process with: > > Checking that ptrace can change system call numbers...<0> > Kernel panic: > check_ptrace : expected SIGTRAP, got status = 256 > In idle task - not syncing > <6>SysRq : Show Regs > EIP: 0000:[<00000000>] CPU: 0 Not tainted EFLAGS: 00000000 > Not tainted > EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000 > ESI: 00000000 EDI: 00000000 EBP: 00000000 DS: 0000 ES: 0000 > Call Trace: [<0805d5fa>] [<08054c8b>] [<0804ca09>] [<080bf294>] > [<0804cfb9>] [<080494b2>] [<080bf294>] [<08049459>] [<080bf2b9>] > [<080bf294>] [<080b9595>] [<080bf294>] [<080b9574>] [<080bf294>] > [<080bf065>] [<080bf294>] [<080bea11>] > > This seems to be a FC3 related issue, as the same kernel boots ok on RHES3 > and RH9 hosts. Anyone seen this problem before, or know of a solution? I've seen (not personally, by reports) such problems on FC3, too... No idea about solutions, sorry. -- Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 http://www.user-mode-linux.org/~blaisorblade |
From: Jeff D. <jd...@ad...> - 2005-02-08 20:53:04
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net...@li... said: > Finally got around to trying this, and i'm having problems. i pulled > 2.6.11-rc3 and patched it to -mm3 w/o issue. -mm1? > Now the skas0 patch that > is supposedly for 2.6.11-rc3-mm3 has rejects: Are you applying it just by itself? If so, that patchset is incremental. Each patch applies cleanly on top of the ones that precede it. If you pull one out by itself and try to apply it, you have to resolve the conflicts yourself. Jeff |
From: Net L. <net...@li...> - 2005-02-08 21:47:30
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On Tue, 8 Feb 2005, Jeff Dike wrote: > D: 21605 > > net...@li... said: > > Finally got around to trying this, and i'm having problems. i pulled > > 2.6.11-rc3 and patched it to -mm3 w/o issue. > > -mm1? doh! > > > Now the skas0 patch that > > is supposedly for 2.6.11-rc3-mm3 has rejects: > > Are you applying it just by itself? If so, that patchset is incremental. > Each patch applies cleanly on top of the ones that precede it. If you pull > one out by itself and try to apply it, you have to resolve the conflicts > yourself. i was just doing skas0, but now i'm doing them all in order, which was going ok until: patch -Np1 -i ../patches/mem-move && rm ../patches/mem-move patching file arch/um/kernel/init_task.c patching file arch/um/kernel/mem_user.c Hunk #1 FAILED at 48. 1 out of 1 hunk FAILED -- saving rejects to file arch/um/kernel/mem_user.c.rej patching file arch/um/kernel/tempfile.c patching file arch/um/kernel/tlb.c patching file arch/um/os-Linux/Makefile patching file arch/um/os-Linux/mem.c patching file arch/um/os-Linux/start_up.c patching file arch/um/os-Linux/tt.c any ideas? -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Lonni J Friedman net...@li... LlamaLand http://netllama.linux-sxs.org |