diff options
| author | John Baldwin <jhb@FreeBSD.org> | 2004-03-15 18:48:28 +0000 |
|---|---|---|
| committer | John Baldwin <jhb@FreeBSD.org> | 2004-03-15 18:48:28 +0000 |
| commit | 8ac61436e6793deeba249d8e2b8332d60c83470f (patch) | |
| tree | 8eba7733b3a1f60380c2220587bc77c938f2c537 /sys/kern/sys_process.c | |
| parent | d2b1b4f3c57dde2d2206df5b799a7409237ed91d (diff) | |
Notes
Diffstat (limited to 'sys/kern/sys_process.c')
| -rw-r--r-- | sys/kern/sys_process.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/sys/kern/sys_process.c b/sys/kern/sys_process.c index 7a0c02ea01eb..636d10bdba06 100644 --- a/sys/kern/sys_process.c +++ b/sys/kern/sys_process.c @@ -522,11 +522,13 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) switch (req) { case PT_STEP: + PROC_UNLOCK(p); error = ptrace_single_step(td2); if (error) { - _PRELE(p); - goto fail; + PRELE(p); + goto fail_noproc; } + PROC_LOCK(p); break; case PT_TO_SCE: p->p_stops |= S_PT_SCE; @@ -540,11 +542,13 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) } if (addr != (void *)1) { + PROC_UNLOCK(p); error = ptrace_set_pc(td2, (u_long)(uintfptr_t)addr); if (error) { - _PRELE(p); - goto fail; + PRELE(p); + goto fail_noproc; } + PROC_LOCK(p); } _PRELE(p); @@ -705,9 +709,9 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) #ifdef __HAVE_PTRACE_MACHDEP if (req >= PT_FIRSTMACH) { _PHOLD(p); - error = cpu_ptrace(td2, req, addr, data); - _PRELE(p); PROC_UNLOCK(p); + error = cpu_ptrace(td2, req, addr, data); + PRELE(p); return (error); } #endif @@ -719,6 +723,7 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) fail: PROC_UNLOCK(p); +fail_noproc: if (proctree_locked) sx_xunlock(&proctree_lock); return (error); |