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schedule: fix null pointer dereferences

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Change-Id: I1d4b0a2fabb5810a89cca4c6a0a837db3a9813ee
This commit is contained in:
Dominique Martinet
2018-07-13 15:44:25 +09:00
committed by Dominique Martinet
parent 79e5026f01
commit ed7f5abc28
1 changed files with 2 additions and 2 deletions
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4
kernel/process.c
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@ -3189,7 +3189,7 @@ redo:
/* Switch to idle() when prev is PS_EXITED since it always reaches release_thread() /* Switch to idle() when prev is PS_EXITED since it always reaches release_thread()
because it always resumes from just after ihk_mc_switch_context() call. See #1029 */ because it always resumes from just after ihk_mc_switch_context() call. See #1029 */
if (v->flags & CPU_FLAG_NEED_MIGRATE || if (v->flags & CPU_FLAG_NEED_MIGRATE ||
prev->status == PS_EXITED) { (prev && prev->status == PS_EXITED)) {
next = &cpu_local_var(idle); next = &cpu_local_var(idle);
} else { } else {
/* Pick a new running process or one that has a pending signal */ /* Pick a new running process or one that has a pending signal */
@ -3274,7 +3274,7 @@ redo:
} }
#ifdef PROFILE_ENABLE #ifdef PROFILE_ENABLE
if (prev->profile && prev->profile_start_ts != 0) { if (prev && prev->profile && prev->profile_start_ts != 0) {
prev->profile_elapsed_ts += prev->profile_elapsed_ts +=
(rdtsc() - prev->profile_start_ts); (rdtsc() - prev->profile_start_ts);
prev->profile_start_ts = 0; prev->profile_start_ts = 0;