Date: Sun, 21 Jul 2013 05:43:23 +0900 From: Taku YAMAMOTO <taku@tackymt.homeip.net> To: freebsd-current@freebsd.org Subject: IPSEC crashes after r253088 Message-ID: <20130721054323.915f865769e6042c7dc62d08@tackymt.homeip.net>
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After r253088, systems with IPSEC and KSTACK_PAGES < 4 crashes on
booting into multi-user mode.
The crash is due to sysctl -a in /etc/rc.d/initrandom ended up with
kernel stack overflow.
The problem is what we have in sys/net/vnet.h:
#define SYSCTL_VNET_PCPUSTAT(parent, nbr, name, type, array, desc) \
static int \
array##_sysctl(SYSCTL_HANDLER_ARGS) \
{ \
type s; \
CTASSERT((sizeof(type) / sizeof(uint64_t)) == \
(sizeof(VNET(array)) / sizeof(counter_u64_t))); \
COUNTER_ARRAY_COPY(VNET(array), &s, sizeof(type) / sizeof(uint64_t));\
if (req->newptr) \
COUNTER_ARRAY_ZERO(VNET(array), \
sizeof(type) / sizeof(uint64_t)); \
return (SYSCTL_OUT(req, &s, sizeof(type))); \
} \
SYSCTL_VNET_PROC(parent, nbr, name, CTLTYPE_OPAQUE | CTLFLAG_RW, NULL, \
0, array ## _sysctl, "I", desc)
where type is struct ipsecstat which is 12560 bytes of size (larger than
3 pages) of size when processing net.inet.ipsec.ipsecstats.
--
-|-__ YAMAMOTO, Taku
| __ < <taku@tackymt.homeip.net>
- A chicken is an egg's way of producing more eggs. -
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