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Red Hat Bugzilla – Attachment 293842 Details for
Bug 431183
utrace: PTRACE_POKEUSR_AREA corrupts ACR0
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[patch]
Fix.
kernel-bz431183-s390x-acr-fix.patch (text/plain), 807 bytes, created by
Jan Kratochvil
on 2008-02-03 22:33:49 UTC
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Description:
Fix.
Filename:
MIME Type:
Creator:
Jan Kratochvil
Created:
2008-02-03 22:33:49 UTC
Size:
807 bytes
patch
obsolete
>--- linux-2.6.18.s390x-orig/arch/s390/kernel/ptrace.c 2008-02-03 15:16:09.000000000 -0500 >+++ linux-2.6.18.s390x/arch/s390/kernel/ptrace.c 2008-02-03 17:16:09.000000000 -0500 >@@ -249,7 +249,8 @@ > u32 fpc[2] = { target->thread.fp_regs.fpc, 0 }; > BUILD_BUG_ON(offsetof(s390_fp_regs, fprs) != sizeof(fpc)); > ret = utrace_regset_copyin(&pos, &count, &kbuf, &ubuf, >- &fpc, 0, sizeof(fpc)); >+ &fpc, 0, >+ offsetof(s390_fp_regs, fprs)); > if (ret) > return ret; > >@@ -261,7 +262,8 @@ > > if (ret == 0 && count > 0) > ret = utrace_regset_copyin(&pos, &count, &kbuf, &ubuf, >- target->thread.fp_regs.fprs, 0, -1); >+ target->thread.fp_regs.fprs, >+ offsetof(s390_fp_regs, fprs), -1); > > if (ret == 0 && target == current) > restore_fp_regs(&target->thread.fp_regs);
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