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Couple protocol drain routines (frag6_drain and sctp_drain) may send

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packets.  An unexpected behaviour for memory reclamation routine.
Anyway, we need enter the network epoch for doing that.
This commit is contained in:
Gleb Smirnoff 2020-02-03 20:48:57 +00:00
parent 446d49d762
commit 0017b2adac
1 changed files with 3 additions and 0 deletions
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3
sys/kern/kern_mbuf.c
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@ -829,15 +829,18 @@ mb_ctor_pack(void *mem, int size, void *arg, int how)
static void
mb_reclaim(uma_zone_t zone __unused, int pending __unused)
{
struct epoch_tracker et;
struct domain *dp;
struct protosw *pr;
WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK | WARN_PANIC, NULL, __func__);
NET_EPOCH_ENTER(et);
for (dp = domains; dp != NULL; dp = dp->dom_next)
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_drain != NULL)
(*pr->pr_drain)();
NET_EPOCH_EXIT(et);
}
/*