Hi,
On a recently compiled -CURRENT kernel, I have triggered a panic when
turning fxp0 into promisc mode than turning it off and then turning it on.
My boxes are connected through a hub and some of them (not the panic'ed one)
have heavy network load.
Hope this backtrace is useful. For more information, please contact me.
Thanks in advance!
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panic: m_copym, offset > size of mbuf chain panic messages:
---
panic: m_copym, offset > size of mbuf chain
syncing disks, buffers remaining... 892 892 892 892 892 892 892 892 892 892
892 892 892 892 892 892 892 892 892 892 giving up on 794 buffers
Uptime: 12h15m26s
Dumping 63 MB
16 32 48
---
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:240
240 dumping++;
(kgdb) bt full
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:240
No locals.
#1 0xc04eb791 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:372
No locals.
#2 0xc04ebb27 in panic () at /usr/src/sys/kern/kern_shutdown.c:550
td = (struct thread *) 0xc0e00000
bootopt = 256
newpanic = 1
ap = 0xc62f3850 "p8/?004??
buf = "m_copym, offset > size of mbuf chain", '\0' <repeats 219
times>
#3 0xc05296f5 in m_copym (m=0x0, off0=1500, len=1480, wait=4) at
/usr/src/sys/kern/uipc_mbuf.c:211
n = (struct mbuf *) 0xc0e24540
np = (struct mbuf **) 0x4
off = 1428
top = (struct mbuf *) 0x2
copyhdr = 0
#4 0xc0580141 in ip_fragment (ip=0xc1015020, m_frag=0xc62f390c,
mtu=-1058912960, if_hwassist_flags=0,
sw_csum=1) at /usr/src/sys/netinet/ip_output.c:1225
error = 0
hlen = 20
len = 1480
off = 1500
m0 = (struct mbuf *) 0xc0e16a00
firstlen = 1480
mnext = (struct mbuf **) 0xc0e16a04
nfrags = 1
#5 0xc057fd2c in ip_output (m0=0x1, opt=0xc1015020, ro=0xc62f3988, flags=1,
imo=0x0, inp=0x0)
at /usr/src/sys/netinet/ip_output.c:1053
ip = (struct ip *) 0xc1015020
ifp = (struct ifnet *) 0xc161a000
m = (struct mbuf *) 0xc0e16a00
hlen = 20
len = 582
off = -1066913577
error = 0
dst = (struct sockaddr_in *) 0xc62f398c
ia = (struct in_ifaddr *) 0xc169a900
isbroadcast = 0
sw_csum = 1
pkt_dst = {s_addr = 16951488}
iproute = {ro_rt = 0xc169be00, ro_dst = {sa_len = 16 '\020',
sa_family = 2 '\002',
sa_data = "\0\0括\002\001\0\0\0\0\0\0\0"}}
so = (struct socket *) 0x0
sp = (struct secpolicy *) 0xc1624c80
args = {m = 0xc06dcfc0, oif = 0x1, next_hop = 0x0, rule = 0x0, eh =
0x0, ro = 0x4, dst = 0x1,
flags = -969983596, f_id = {dst_ip = 3226510491, src_ip = 3228422080,
dst_port = 0, src_port = 0,
proto = 0 '\0', flags = 106 'j'}, divert_rule = 0, retval = 3324983708}
src_was_INADDR_ANY = 0
#6 0xc057e7b8 in ip_forward (m=0xc0e16a00, srcrt=1, next_hop=0x0) at
/usr/src/sys/netinet/ip_input.c:1929
tag = {mh_next = 0x0, mh_nextpkt = 0xc06e6620, mh_data = 0x3(kgdb)
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:240
No locals.
#1 0xc04eb791 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:372
No locals.
#2 0xc04ebb27 in panic () at /usr/src/sys/kern/kern_shutdown.c:550
td = (struct thread *) 0xc0e00000
bootopt = 256
newpanic = 1
ap = 0xc62f3850 "p8/?004??
buf = "m_copym, offset > size of mbuf chain", '\0' <repeats 219
times>
#3 0xc05296f5 in m_copym (m=0x0, off0=1500, len=1480, wait=4) at
/usr/src/sys/kern/uipc_mbuf.c:211
n = (struct mbuf *) 0xc0e24540
np = (struct mbuf **) 0x4
off = 1428
top = (struct mbuf *) 0x2
copyhdr = 0
#4 0xc0580141 in ip_fragment (ip=0xc1015020, m_frag=0xc62f390c,
mtu=-1058912960, if_hwassist_flags=0,
sw_csum=1) at /usr/src/sys/netinet/ip_output.c:1225
error = 0
hlen = 20
len = 1480
off = 1500
m0 = (struct mbuf *) 0xc0e16a00
firstlen = 1480
mnext = (struct mbuf **) 0xc0e16a04
nfrags = 1
#5 0xc057fd2c in ip_output (m0=0x1, opt=0xc1015020, ro=0xc62f3988, flags=1,
imo=0x0, inp=0x0)
at /usr/src/sys/netinet/ip_output.c:1053
ip = (struct ip *) 0xc1015020
ifp = (struct ifnet *) 0xc161a000
m = (struct mbuf *) 0xc0e16a00
hlen = 20
len = 582
off = -1066913577
error = 0
dst = (struct sockaddr_in *) 0xc62f398c
ia = (struct in_ifaddr *) 0xc169a900
isbroadcast = 0
sw_csum = 1
pkt_dst = {s_addr = 16951488}
iproute = {ro_rt = 0xc169be00, ro_dst = {sa_len = 16 '\020',
sa_family = 2 '\002',
sa_data = "\0\0括\002\001\0\0\0\0\0\0\0"}}
so = (struct socket *) 0x0
sp = (struct secpolicy *) 0xc1624c80
args = {m = 0xc06dcfc0, oif = 0x1, next_hop = 0x0, rule = 0x0, eh =
0x0, ro = 0x4, dst = 0x1,
flags = -969983596, f_id = {dst_ip = 3226510491, src_ip = 3228422080,
dst_port = 0, src_port = 0,
proto = 0 '\0', flags = 106 'j'}, divert_rule = 0, retval = 3324983708}
src_was_INADDR_ANY = 0
#6 0xc057e7b8 in ip_forward (m=0xc0e16a00, srcrt=1, next_hop=0x0) at
/usr/src/sys/netinet/ip_input.c:1929
tag = {mh_next = 0x0, mh_nextpkt = 0xc06e6620, mh_data = 0x3(kgdb)
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:240
No locals.
#1 0xc04eb791 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:372
No locals.
#2 0xc04ebb27 in panic () at /usr/src/sys/kern/kern_shutdown.c:550
td = (struct thread *) 0xc0e00000
bootopt = 256
newpanic = 1
ap = 0xc62f3850 "p8/?004??
buf = "m_copym, offset > size of mbuf chain", '\0' <repeats 219
times>
#3 0xc05296f5 in m_copym (m=0x0, off0=1500, len=1480, wait=4) at
/usr/src/sys/kern/uipc_mbuf.c:211
n = (struct mbuf *) 0xc0e24540
np = (struct mbuf **) 0x4
off = 1428
top = (struct mbuf *) 0x2
copyhdr = 0
#4 0xc0580141 in ip_fragment (ip=0xc1015020, m_frag=0xc62f390c,
mtu=-1058912960, if_hwassist_flags=0,
sw_csum=1) at /usr/src/sys/netinet/ip_output.c:1225
error = 0
hlen = 20
len = 1480
off = 1500
m0 = (struct mbuf *) 0xc0e16a00
firstlen = 1480
mnext = (struct mbuf **) 0xc0e16a04
nfrags = 1
#5 0xc057fd2c in ip_output (m0=0x1, opt=0xc1015020, ro=0xc62f3988, flags=1,
imo=0x0, inp=0x0)
at /usr/src/sys/netinet/ip_output.c:1053
ip = (struct ip *) 0xc1015020
ifp = (struct ifnet *) 0xc161a000
m = (struct mbuf *) 0xc0e16a00
hlen = 20
len = 582
off = -1066913577
error = 0
dst = (struct sockaddr_in *) 0xc62f398c
ia = (struct in_ifaddr *) 0xc169a900
isbroadcast = 0
sw_csum = 1
pkt_dst = {s_addr = 16951488}
iproute = {ro_rt = 0xc169be00, ro_dst = {sa_len = 16 '\020',
sa_family = 2 '\002',
sa_data = "\0\0括\002\001\0\0\0\0\0\0\0"}}
so = (struct socket *) 0x0
sp = (struct secpolicy *) 0xc1624c80
args = {m = 0xc06dcfc0, oif = 0x1, next_hop = 0x0, rule = 0x0, eh =
0x0, ro = 0x4, dst = 0x1,
flags = -969983596, f_id = {dst_ip = 3226510491, src_ip = 3228422080,
dst_port = 0, src_port = 0,
proto = 0 '\0', flags = 106 'j'}, divert_rule = 0, retval = 3324983708}
src_was_INADDR_ANY = 0
#6 0xc057e7b8 in ip_forward (m=0xc0e16a00, srcrt=1, next_hop=0x0) at
/usr/src/sys/netinet/ip_input.c:1929
tag = {mh_next = 0x0, mh_nextpkt = 0xc06e6620, mh_data = 0x3(kgdb)
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:240
No locals.
#1 0xc04eb791 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:372
No locals.
#2 0xc04ebb27 in panic () at /usr/src/sys/kern/kern_shutdown.c:550
td = (struct thread *) 0xc0e00000
bootopt = 256
newpanic = 1
ap = 0xc62f3850 "p8/?004??
buf = "m_copym, offset > size of mbuf chain", '\0' <repeats 219
times>
#3 0xc05296f5 in m_copym (m=0x0, off0=1500, len=1480, wait=4) at
/usr/src/sys/kern/uipc_mbuf.c:211
n = (struct mbuf *) 0xc0e24540
np = (struct mbuf **) 0x4
off = 1428
top = (struct mbuf *) 0x2
copyhdr = 0
#4 0xc0580141 in ip_fragment (ip=0xc1015020, m_frag=0xc62f390c,
mtu=-1058912960, if_hwassist_flags=0,
sw_csum=1) at /usr/src/sys/netinet/ip_output.c:1225
error = 0
hlen = 20
len = 1480
off = 1500
m0 = (struct mbuf *) 0xc0e16a00
firstlen = 1480
mnext = (struct mbuf **) 0xc0e16a04
nfrags = 1
#5 0xc057fd2c in ip_output (m0=0x1, opt=0xc1015020, ro=0xc62f3988, flags=1,
imo=0x0, inp=0x0)
at /usr/src/sys/netinet/ip_output.c:1053
ip = (struct ip *) 0xc1015020
ifp = (struct ifnet *) 0xc161a000
m = (struct mbuf *) 0xc0e16a00
hlen = 20
len = 582
off = -1066913577
error = 0
dst = (struct sockaddr_in *) 0xc62f398c
ia = (struct in_ifaddr *) 0xc169a900
isbroadcast = 0
sw_csum = 1
pkt_dst = {s_addr = 16951488}
iproute = {ro_rt = 0xc169be00, ro_dst = {sa_len = 16 '\020',
sa_family = 2 '\002',
sa_data = "\0\0括\002\001\0\0\0\0\0\0\0"}}
so = (struct socket *) 0x0
sp = (struct secpolicy *) 0xc1624c80
args = {m = 0xc06dcfc0, oif = 0x1, next_hop = 0x0, rule = 0x0, eh =
0x0, ro = 0x4, dst = 0x1,
flags = -969983596, f_id = {dst_ip = 3226510491, src_ip = 3228422080,
dst_port = 0, src_port = 0,
proto = 0 '\0', flags = 106 'j'}, divert_rule = 0, retval = 3324983708}
src_was_INADDR_ANY = 0
#6 0xc057e7b8 in ip_forward (m=0xc0e16a00, srcrt=1, next_hop=0x0) at
/usr/src/sys/netinet/ip_input.c:1929
tag = {mh_next = 0x0, mh_nextpkt = 0xc06e6620, mh_data = 0x3(kgdb)
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