* [BUG] 2.6.25-rc2-mm1 - kernel oops while bootup on s390x [not found] <20080216002522.9c4bd0fb.akpm@linux-foundation.org> @ 2008-02-16 16:15 ` Kamalesh Babulal 2008-02-16 19:45 ` Andrew Morton 0 siblings, 1 reply; 7+ messages in thread From: Kamalesh Babulal @ 2008-02-16 16:15 UTC (permalink / raw) To: Andrew Morton; +Cc: linux-kernel, linux390, linux-s390, Andy Whitcroft Hi Andrew, The 2.6.25-rc2-mm1 kernel panic's while boot up on the s390x Unable to handle kernel pointer dereference at virtual kernel address 0000000000 000000 Oops: 0004 #1¨ SMP Modules linked in: CPU: 0 Not tainted 2.6.25-rc2-mm1-autotest #1 Process swapper (pid: 1, task: 000000003f830000, ksp: 000000003f83ba48) Krnl PSW : 0704a00180000000 000000000024b2be (futex_atomic_cmpxchg_std+0x12/0x28 ) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:2 CC:2 PM:0 EA:3 Krnl GPRS: 0000000000000074 00000000fffffff2 0000000000000000 0000000000000000 0000000000000000 0000000000000001 0000000000000000 00000000004d0764 0000000000000000 00000000004d8768 0000000000000000 000000003f83bdb0 0000000000000040 0000000000343950 00000000000627e4 000000003f83bdb0 Krnl Code: 000000000024b2b2: b90400bf lgr %r11,%r15 000000000024b2b6: a718fff2 lhi %r1,-14 000000000024b2ba: b2790100 sacf 256 >000000000024b2be: ba342000 cs %r3,%r4,0(%r2) 000000000024b2c2: 1813 lr %r1,%r3 000000000024b2c4: b2790000 sacf 0 000000000024b2c8: b9140021 lgfr %r2,%r1 000000000024b2cc: e3b0b0700004 lg %r11,112(%r11) Call Trace: (<000000003f83bda8>¨ 0x3f83bda8) <00000000004bdeec>¨ init+0x30/0x104 <00000000004b0c40>¨ kernel_init+0x1e0/0x370 <000000000001a5c6>¨ kernel_thread_starter+0x6/0xc <000000000001a5c0>¨ kernel_thread_starter+0x0/0xc <4>--- end trace 561bb236c800851f ¨--- note: swapper1¨ exited with preempt_count 1 Kernel panic - not syncing: Attempted to kill init! -- Thanks & Regards, Kamalesh Babulal, Linux Technology Center, IBM, ISTL. ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [BUG] 2.6.25-rc2-mm1 - kernel oops while bootup on s390x 2008-02-16 16:15 ` [BUG] 2.6.25-rc2-mm1 - kernel oops while bootup on s390x Kamalesh Babulal @ 2008-02-16 19:45 ` Andrew Morton 2008-02-16 19:49 ` Thomas Gleixner 0 siblings, 1 reply; 7+ messages in thread From: Andrew Morton @ 2008-02-16 19:45 UTC (permalink / raw) To: Kamalesh Babulal Cc: linux-kernel, linux390, linux-s390, Andy Whitcroft, Thomas Gleixner On Sat, 16 Feb 2008 21:45:54 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote: > Hi Andrew, > > The 2.6.25-rc2-mm1 kernel panic's while boot up on the s390x > > Unable to handle kernel pointer dereference at virtual kernel address 0000000000 > 000000 > Oops: 0004 #1¨ SMP > Modules linked in: > CPU: 0 Not tainted 2.6.25-rc2-mm1-autotest #1 > Process swapper (pid: 1, task: 000000003f830000, ksp: 000000003f83ba48) > Krnl PSW : 0704a00180000000 000000000024b2be (futex_atomic_cmpxchg_std+0x12/0x28 > ) > R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:2 CC:2 PM:0 EA:3 > Krnl GPRS: 0000000000000074 00000000fffffff2 0000000000000000 0000000000000000 > 0000000000000000 0000000000000001 0000000000000000 00000000004d0764 > 0000000000000000 00000000004d8768 0000000000000000 000000003f83bdb0 > 0000000000000040 0000000000343950 00000000000627e4 000000003f83bdb0 > Krnl Code: 000000000024b2b2: b90400bf lgr %r11,%r15 > 000000000024b2b6: a718fff2 lhi %r1,-14 > 000000000024b2ba: b2790100 sacf 256 > >000000000024b2be: ba342000 cs %r3,%r4,0(%r2) > 000000000024b2c2: 1813 lr %r1,%r3 > 000000000024b2c4: b2790000 sacf 0 > 000000000024b2c8: b9140021 lgfr %r2,%r1 > 000000000024b2cc: e3b0b0700004 lg %r11,112(%r11) > Call Trace: > (<000000003f83bda8>¨ 0x3f83bda8) > <00000000004bdeec>¨ init+0x30/0x104 > <00000000004b0c40>¨ kernel_init+0x1e0/0x370 > <000000000001a5c6>¨ kernel_thread_starter+0x6/0xc > <000000000001a5c0>¨ kernel_thread_starter+0x0/0xc > > <4>--- end trace 561bb236c800851f ¨--- > note: swapper1¨ exited with preempt_count 1 > Kernel panic - not syncing: Attempted to kill init! > Possibilities are that something has gone wrong with the recent cmpxchg changes which are now in mainline, or there's something wrong with futex-fix-init-order.patch or futex-runtime-enable-pi-and-robust-functionality.patch. Or, of course, it's something else ;) First question is: does this happen in current mainline? If not, it would be useful if someone could test futex-fix-init-order.patch and futex-runtime-enable-pi-and-robust-functionality.patch on curent mainline, because those are planned for 2.6.25. Thanks. ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [BUG] 2.6.25-rc2-mm1 - kernel oops while bootup on s390x 2008-02-16 19:45 ` Andrew Morton @ 2008-02-16 19:49 ` Thomas Gleixner 2008-02-16 19:50 ` Thomas Gleixner 0 siblings, 1 reply; 7+ messages in thread From: Thomas Gleixner @ 2008-02-16 19:49 UTC (permalink / raw) To: Andrew Morton Cc: Kamalesh Babulal, linux-kernel, linux390, linux-s390, Andy Whitcroft [-- Attachment #1: Type: TEXT/PLAIN, Size: 618 bytes --] On Sat, 16 Feb 2008, Andrew Morton wrote: > > The 2.6.25-rc2-mm1 kernel panic's while boot up on the s390x > > > > Unable to handle kernel pointer dereference at virtual kernel address 0000000000 > > 000000 > > Oops: 0004 #1¨ SMP > First question is: does this happen in current mainline? > > If not, it would be useful if someone could test futex-fix-init-order.patch > and futex-runtime-enable-pi-and-robust-functionality.patch on curent > mainline, because those are planned for 2.6.25. See: http://lkml.org/lkml/2008/2/16/109 It unearthed a BUG in the S390 exception fixup tables :) tglx ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [BUG] 2.6.25-rc2-mm1 - kernel oops while bootup on s390x 2008-02-16 19:49 ` Thomas Gleixner @ 2008-02-16 19:50 ` Thomas Gleixner 2008-02-17 3:40 ` Kamalesh Babulal 0 siblings, 1 reply; 7+ messages in thread From: Thomas Gleixner @ 2008-02-16 19:50 UTC (permalink / raw) To: Andrew Morton Cc: Kamalesh Babulal, linux-kernel, linux390, linux-s390, Andy Whitcroft [-- Attachment #1: Type: TEXT/PLAIN, Size: 766 bytes --] On Sat, 16 Feb 2008, Thomas Gleixner wrote: > On Sat, 16 Feb 2008, Andrew Morton wrote: > > > The 2.6.25-rc2-mm1 kernel panic's while boot up on the s390x > > > > > > Unable to handle kernel pointer dereference at virtual kernel address 0000000000 > > > 000000 > > > Oops: 0004 #1¨ SMP > > First question is: does this happen in current mainline? > > > > If not, it would be useful if someone could test futex-fix-init-order.patch > > and futex-runtime-enable-pi-and-robust-functionality.patch on curent > > mainline, because those are planned for 2.6.25. > > See: http://lkml.org/lkml/2008/2/16/109 > > It unearthed a BUG in the S390 exception fixup tables :) Oops, wrong reference. http://lkml.org/lkml/2008/2/16/95 Thanks, tglx ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [BUG] 2.6.25-rc2-mm1 - kernel oops while bootup on s390x 2008-02-16 19:50 ` Thomas Gleixner @ 2008-02-17 3:40 ` Kamalesh Babulal 2008-02-17 9:06 ` Heiko Carstens 0 siblings, 1 reply; 7+ messages in thread From: Kamalesh Babulal @ 2008-02-17 3:40 UTC (permalink / raw) To: Thomas Gleixner Cc: Andrew Morton, linux-kernel, linux390, linux-s390, Andy Whitcroft Thomas Gleixner wrote: > On Sat, 16 Feb 2008, Thomas Gleixner wrote: >> On Sat, 16 Feb 2008, Andrew Morton wrote: >>>> The 2.6.25-rc2-mm1 kernel panic's while boot up on the s390x >>>> >>>> Unable to handle kernel pointer dereference at virtual kernel address 0000000000 >>>> 000000 >>>> Oops: 0004 #1¨ SMP >>> First question is: does this happen in current mainline? This is not happening with the current mainline 2.6.24.{1,2}. >>> >>> If not, it would be useful if someone could test futex-fix-init-order.patch >>> and futex-runtime-enable-pi-and-robust-functionality.patch on curent >>> mainline, because those are planned for 2.6.25. >> See: http://lkml.org/lkml/2008/2/16/109 >> >> It unearthed a BUG in the S390 exception fixup tables :) > > Oops, wrong reference. > > http://lkml.org/lkml/2008/2/16/95 > > Thanks, > tglx To conform the patches causing the panic, I tested the 2.6.24.2 kernel with the futex-fix-init-order.patch and futex-runtime-enable-pi-and-robust-functionality.patch applied and they seem to cause the kernel panic. Unable to handle kernel pointer dereference at virtual kernel address 0000000000 000000 Oops: 0004 #1¨ SMP Modules linked in: CPU: 0 Not tainted 2.6.25-rc2-mm1-autotest #1 Process swapper (pid: 1, task: 000000003f830000, ksp: 000000003f83ba48) Krnl PSW : 0704a00180000000 000000000024b2be (futex_atomic_cmpxchg_std+0x12/0x28 ) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:2 CC:2 PM:0 EA:3 Krnl GPRS: 0000000000000074 00000000fffffff2 0000000000000000 0000000000000000 0000000000000000 0000000000000001 0000000000000000 00000000004d0764 0000000000000000 00000000004d8768 0000000000000000 000000003f83bdb0 0000000000000040 0000000000343950 00000000000627e4 000000003f83bdb0 Krnl Code: 000000000024b2b2: b90400bf lgr %r11,%r15 000000000024b2b6: a718fff2 lhi %r1,-14 000000000024b2ba: b2790100 sacf 256 >000000000024b2be: ba342000 cs %r3,%r4,0(%r2) 000000000024b2c2: 1813 lr %r1,%r3 000000000024b2c4: b2790000 sacf 0 000000000024b2c8: b9140021 lgfr %r2,%r1 000000000024b2cc: e3b0b0700004 lg %r11,112(%r11) Call Trace: (<000000003f83bda8>¨ 0x3f83bda8) <00000000004bdeec>¨ init+0x30/0x104 <00000000004b0c40>¨ kernel_init+0x1e0/0x370 <000000000001a5c6>¨ kernel_thread_starter+0x6/0xc <000000000001a5c0>¨ kernel_thread_starter+0x0/0xc <4>--- end trace 561bb236c800851f ¨--- note: swapper1¨ exited with preempt_count 1 Kernel panic - not syncing: Attempted to kill init! -- Thanks & Regards, Kamalesh Babulal, Linux Technology Center, IBM, ISTL. ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [BUG] 2.6.25-rc2-mm1 - kernel oops while bootup on s390x 2008-02-17 3:40 ` Kamalesh Babulal @ 2008-02-17 9:06 ` Heiko Carstens 2008-02-18 14:08 ` Kamalesh Babulal 0 siblings, 1 reply; 7+ messages in thread From: Heiko Carstens @ 2008-02-17 9:06 UTC (permalink / raw) To: Kamalesh Babulal Cc: Thomas Gleixner, Andrew Morton, linux-kernel, linux390, linux-s390, Andy Whitcroft On Sun, Feb 17, 2008 at 09:10:46AM +0530, Kamalesh Babulal wrote: > To conform the patches causing the panic, I tested the 2.6.24.2 kernel with the futex-fix-init-order.patch and > futex-runtime-enable-pi-and-robust-functionality.patch applied and they seem to cause the kernel > panic. > > Unable to handle kernel pointer dereference at virtual kernel address 0000000000 > 000000 > Oops: 0004 #1¨ SMP > Modules linked in: > CPU: 0 Not tainted 2.6.25-rc2-mm1-autotest #1 > Process swapper (pid: 1, task: 000000003f830000, ksp: 000000003f83ba48) > Krnl PSW : 0704a00180000000 000000000024b2be (futex_atomic_cmpxchg_std+0x12/0x28 > ) > R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:2 CC:2 PM:0 EA:3 > Krnl GPRS: 0000000000000074 00000000fffffff2 0000000000000000 0000000000000000 > 0000000000000000 0000000000000001 0000000000000000 00000000004d0764 > 0000000000000000 00000000004d8768 0000000000000000 000000003f83bdb0 > 0000000000000040 0000000000343950 00000000000627e4 000000003f83bdb0 > Krnl Code: 000000000024b2b2: b90400bf lgr %r11,%r15 > 000000000024b2b6: a718fff2 lhi %r1,-14 > 000000000024b2ba: b2790100 sacf 256 > >000000000024b2be: ba342000 cs %r3,%r4,0(%r2) > 000000000024b2c2: 1813 lr %r1,%r3 > 000000000024b2c4: b2790000 sacf 0 > 000000000024b2c8: b9140021 lgfr %r2,%r1 > 000000000024b2cc: e3b0b0700004 lg %r11,112(%r11) > Call Trace: > (<000000003f83bda8>¨ 0x3f83bda8) > <00000000004bdeec>¨ init+0x30/0x104 > <00000000004b0c40>¨ kernel_init+0x1e0/0x370 > <000000000001a5c6>¨ kernel_thread_starter+0x6/0xc > <000000000001a5c0>¨ kernel_thread_starter+0x0/0xc > > <4>--- end trace 561bb236c800851f ¨--- > note: swapper1¨ exited with preempt_count 1 > Kernel panic - not syncing: Attempted to kill init! Thanks for reporting! Patch below should fix it. Index: linux-2.6/arch/s390/lib/uaccess_std.c =================================================================== --- linux-2.6.orig/arch/s390/lib/uaccess_std.c +++ linux-2.6/arch/s390/lib/uaccess_std.c @@ -293,8 +293,8 @@ int futex_atomic_cmpxchg_std(int __user asm volatile( " sacf 256\n" - " cs %1,%4,0(%5)\n" - "0: lr %0,%1\n" + "0: cs %1,%4,0(%5)\n" + " lr %0,%1\n" "1: sacf 0\n" EX_TABLE(0b,1b) : "=d" (ret), "+d" (oldval), "=m" (*uaddr) ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [BUG] 2.6.25-rc2-mm1 - kernel oops while bootup on s390x 2008-02-17 9:06 ` Heiko Carstens @ 2008-02-18 14:08 ` Kamalesh Babulal 0 siblings, 0 replies; 7+ messages in thread From: Kamalesh Babulal @ 2008-02-18 14:08 UTC (permalink / raw) To: Heiko Carstens Cc: Kamalesh Babulal, Thomas Gleixner, Andrew Morton, linux-kernel, linux390, linux-s390, Andy Whitcroft On Sun, Feb 17, 2008 at 10:06:16AM +0100, Heiko Carstens wrote: > On Sun, Feb 17, 2008 at 09:10:46AM +0530, Kamalesh Babulal wrote: > > To conform the patches causing the panic, I tested the 2.6.24.2 kernel with the futex-fix-init-order.patch and > > futex-runtime-enable-pi-and-robust-functionality.patch applied and they seem to cause the kernel > > panic. > > > > Unable to handle kernel pointer dereference at virtual kernel address 0000000000 > > 000000 > > Oops: 0004 #1¨ SMP > > Modules linked in: > > CPU: 0 Not tainted 2.6.25-rc2-mm1-autotest #1 > > Process swapper (pid: 1, task: 000000003f830000, ksp: 000000003f83ba48) > > Krnl PSW : 0704a00180000000 000000000024b2be (futex_atomic_cmpxchg_std+0x12/0x28 > > ) > > R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:2 CC:2 PM:0 EA:3 > > Krnl GPRS: 0000000000000074 00000000fffffff2 0000000000000000 0000000000000000 > > 0000000000000000 0000000000000001 0000000000000000 00000000004d0764 > > 0000000000000000 00000000004d8768 0000000000000000 000000003f83bdb0 > > 0000000000000040 0000000000343950 00000000000627e4 000000003f83bdb0 > > Krnl Code: 000000000024b2b2: b90400bf lgr %r11,%r15 > > 000000000024b2b6: a718fff2 lhi %r1,-14 > > 000000000024b2ba: b2790100 sacf 256 > > >000000000024b2be: ba342000 cs %r3,%r4,0(%r2) > > 000000000024b2c2: 1813 lr %r1,%r3 > > 000000000024b2c4: b2790000 sacf 0 > > 000000000024b2c8: b9140021 lgfr %r2,%r1 > > 000000000024b2cc: e3b0b0700004 lg %r11,112(%r11) > > Call Trace: > > (<000000003f83bda8>¨ 0x3f83bda8) > > <00000000004bdeec>¨ init+0x30/0x104 > > <00000000004b0c40>¨ kernel_init+0x1e0/0x370 > > <000000000001a5c6>¨ kernel_thread_starter+0x6/0xc > > <000000000001a5c0>¨ kernel_thread_starter+0x0/0xc > > > > <4>--- end trace 561bb236c800851f ¨--- > > note: swapper1¨ exited with preempt_count 1 > > Kernel panic - not syncing: Attempted to kill init! Hi Heiko, Thanks for the patch, I have tested patch, it fixes the bootup panic. Tested-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Index: linux-2.6/arch/s390/lib/uaccess_std.c =================================================================== --- linux-2.6.orig/arch/s390/lib/uaccess_std.c +++ linux-2.6/arch/s390/lib/uaccess_std.c @@ -293,8 +293,8 @@ int futex_atomic_cmpxchg_std(int __user asm volatile( " sacf 256\n" - " cs %1,%4,0(%5)\n" - "0: lr %0,%1\n" + "0: cs %1,%4,0(%5)\n" + " lr %0,%1\n" "1: sacf 0\n" EX_TABLE(0b,1b) : "=d" (ret), "+d" (oldval), "=m" (*uaddr) -- -- Thanks & Regards, Kamalesh Babulal, Linux Technology Center, IBM, ISTL. ^ permalink raw reply [flat|nested] 7+ messages in thread
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[not found] <20080216002522.9c4bd0fb.akpm@linux-foundation.org>
2008-02-16 16:15 ` [BUG] 2.6.25-rc2-mm1 - kernel oops while bootup on s390x Kamalesh Babulal
2008-02-16 19:45 ` Andrew Morton
2008-02-16 19:49 ` Thomas Gleixner
2008-02-16 19:50 ` Thomas Gleixner
2008-02-17 3:40 ` Kamalesh Babulal
2008-02-17 9:06 ` Heiko Carstens
2008-02-18 14:08 ` Kamalesh Babulal
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