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) - To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
