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| author | ae <ae@FreeBSD.org> | 2015-11-25 07:14:58 +0000 |
|---|---|---|
| committer | ae <ae@FreeBSD.org> | 2015-11-25 07:14:58 +0000 |
| commit | da001d5bf7a7acfef070a8f605c3ec452d374d09 (patch) | |
| tree | da9d4b6ba7cf2e2ad4a8adaad580fd039149d813 | |
| parent | dc18eb23e2b461aebbacdff96e2349bca5a82de6 (diff) | |
| download | FreeBSD-src-da001d5bf7a7acfef070a8f605c3ec452d374d09.zip FreeBSD-src-da001d5bf7a7acfef070a8f605c3ec452d374d09.tar.gz | |
Check that hhk_helper pointer isn't NULL before access.
It isn't forbidden to use NULL pointer for hook_helper in hookinfo
structure when hhook_add_hook() adds new helper hook.
| -rw-r--r-- | sys/kern/kern_hhook.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/kern/kern_hhook.c b/sys/kern/kern_hhook.c index 321e1a9..12410cb 100644 --- a/sys/kern/kern_hhook.c +++ b/sys/kern/kern_hhook.c @@ -101,7 +101,8 @@ hhook_run_hooks(struct hhook_head *hhh, void *ctx_data, struct osd *hosd) HHH_RLOCK(hhh, &rmpt); STAILQ_FOREACH(hhk, &hhh->hhh_hooks, hhk_next) { - if (hhk->hhk_helper->h_flags & HELPER_NEEDS_OSD) { + if (hhk->hhk_helper != NULL && + hhk->hhk_helper->h_flags & HELPER_NEEDS_OSD) { hdata = osd_get(OSD_KHELP, hosd, hhk->hhk_helper->h_id); if (hdata == NULL) continue; |
