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| author | Konstantin Belousov <kib@FreeBSD.org> | 2021-04-24 12:02:40 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2021-05-03 16:18:25 +0000 |
| commit | 68d311b66678d9daffc5cf1c78f3101f2eeec3ea (patch) | |
| tree | f13233d1bfc22c012655e1389359f81ae69b5d6c | |
| parent | 9ebf9100bad129a92961572ac862781d6c5681c7 (diff) | |
ptracestop: mark threads suspended there with the new TDB_SSWITCH flag
This way threads in ptracestop can be discovered by debugger
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D29955
| -rw-r--r-- | sys/kern/kern_sig.c | 2 | ||||
| -rw-r--r-- | sys/sys/proc.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c index 46b520030dcd..445582a176c8 100644 --- a/sys/kern/kern_sig.c +++ b/sys/kern/kern_sig.c @@ -2648,7 +2648,9 @@ ptracestop(struct thread *td, int sig, ksiginfo_t *si) td->td_dbgflags &= ~TDB_STOPATFORK; } stopme: + td->td_dbgflags |= TDB_SSWITCH; thread_suspend_switch(td, p); + td->td_dbgflags &= ~TDB_SSWITCH; if (p->p_xthread == td) p->p_xthread = NULL; if (!(p->p_flag & P_TRACED)) diff --git a/sys/sys/proc.h b/sys/sys/proc.h index e02e97d74229..b959681e992b 100644 --- a/sys/sys/proc.h +++ b/sys/sys/proc.h @@ -485,6 +485,7 @@ do { \ #define TDB_VFORK 0x00000800 /* vfork indicator for ptrace() */ #define TDB_FSTP 0x00001000 /* The thread is PT_ATTACH leader */ #define TDB_STEP 0x00002000 /* (x86) PSL_T set for PT_STEP */ +#define TDB_SSWITCH 0x00004000 /* Suspended in ptracestop */ /* * "Private" flags kept in td_pflags: |