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| author | Michael Bestas <mkbestas@lineageos.org> | 2020-10-23 18:21:25 +0300 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2020-10-23 18:21:25 +0300 |
| commit | 794b42a9a5fd60bd14413abedafdd2a9b07b1308 (patch) | |
| tree | 2c00d2a954de42f9dc54b3a7894c1ad99a2e8a8b /kernel/kprobes.c | |
| parent | 24b3bdcf71522f4d711958b01e8a8f234fe2450d (diff) | |
| parent | 7a9986e91f90994623e4c5de1effce14729dba96 (diff) | |
Merge branch 'android-4.4-p' of https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-06000-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
7a9986e91f909 UPSTREAM: binder: fix UAF when releasing todo list
Conflicts:
fs/eventpoll.c
Change-Id: I77260d03cb539d7e7eefcea360aee2d59bb9e0cb
Diffstat (limited to 'kernel/kprobes.c')
| -rw-r--r-- | kernel/kprobes.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 9241a29a1f9d..33c37dbc56a0 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -2012,6 +2012,9 @@ static void kill_kprobe(struct kprobe *p) { struct kprobe *kp; + if (WARN_ON_ONCE(kprobe_gone(p))) + return; + p->flags |= KPROBE_FLAG_GONE; if (kprobe_aggrprobe(p)) { /* @@ -2032,9 +2035,10 @@ static void kill_kprobe(struct kprobe *p) /* * The module is going away. We should disarm the kprobe which - * is using ftrace. + * is using ftrace, because ftrace framework is still available at + * MODULE_STATE_GOING notification. */ - if (kprobe_ftrace(p)) + if (kprobe_ftrace(p) && !kprobe_disabled(p) && !kprobes_all_disarmed) disarm_kprobe_ftrace(p); } @@ -2154,7 +2158,10 @@ static int kprobes_module_callback(struct notifier_block *nb, mutex_lock(&kprobe_mutex); for (i = 0; i < KPROBE_TABLE_SIZE; i++) { head = &kprobe_table[i]; - hlist_for_each_entry_rcu(p, head, hlist) + hlist_for_each_entry_rcu(p, head, hlist) { + if (kprobe_gone(p)) + continue; + if (within_module_init((unsigned long)p->addr, mod) || (checkcore && within_module_core((unsigned long)p->addr, mod))) { @@ -2165,6 +2172,7 @@ static int kprobes_module_callback(struct notifier_block *nb, */ kill_kprobe(p); } + } } mutex_unlock(&kprobe_mutex); return NOTIFY_DONE; |