ptrace: DEBUGCTLMSR_BTF fixes

Oleg Nesterov lkml 2 versions Aug 3, 2012 – Aug 13, 2012 New

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v2 Latest Aug 13, 20122 patches 0 repliesNew
v1 Aug 3, 20122 patches 14 repliesSuperseded

Patches in v2 No applies recorded yet

#	Subject and files	Size	Replies	Applied
1/2	ptrace: introduce set_task_blockstep() helper`arch/x86/kernel/step.c`	+21 ~~-20~~	0 replies
2/2	ptrace: partly fix set_task_blockstep()->update_debugctlmsr() logic`arch/x86/kernel/step.c`	+13 -1	0 replies

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Cover letter [PATCH v2 0/2] ptrace: DEBUGCTLMSR_BTF fixes

Hello.

The subject says "ptrace:", but we need these changes for uprobes.

Although I think this fix makes sense by itself. I am really surprised how many problems this simple code has, or I am totally confused (this is very possible).

Could someone review 2/2 ?

The next step will change uprobes to use the new helper and avoid user_enable_single_step().

Oleg.

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