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| author | Eric W. Biederman <ebiederm@xmission.com> | 2022-04-26 16:30:17 -0500 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2022-05-11 14:33:33 -0500 |
| commit | c200e4bb44e80b343c09841e7caaaca0aac5e5fa (patch) | |
| tree | 5318db1a0ff49083693b76d52968338c5aaa19f9 /include/linux/ptrace.h | |
| parent | e71ba124078e391879e0bf111529fa2d630d106c (diff) | |
| download | lwn-c200e4bb44e80b343c09841e7caaaca0aac5e5fa.tar.gz lwn-c200e4bb44e80b343c09841e7caaaca0aac5e5fa.zip | |
ptrace/um: Replace PT_DTRACE with TIF_SINGLESTEP
User mode linux is the last user of the PT_DTRACE flag. Using the flag to indicate
single stepping is a little confusing and worse changing tsk->ptrace without locking
could potentionally cause problems.
So use a thread info flag with a better name instead of flag in tsk->ptrace.
Remove the definition PT_DTRACE as uml is the last user.
Cc: stable@vger.kernel.org
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Tested-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lkml.kernel.org/r/20220505182645.497868-3-ebiederm@xmission.com
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'include/linux/ptrace.h')
| -rw-r--r-- | include/linux/ptrace.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index 15b3d176b6b4..4c06f9f8ef3f 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -30,7 +30,6 @@ extern int ptrace_access_vm(struct task_struct *tsk, unsigned long addr, #define PT_SEIZED 0x00010000 /* SEIZE used, enable new behavior */ #define PT_PTRACED 0x00000001 -#define PT_DTRACE 0x00000002 /* delayed trace (used on m68k, i386) */ #define PT_OPT_FLAG_SHIFT 3 /* PT_TRACE_* event enable flags */ |