Date: Tue, 11 Apr 2006 15:07:59 +0200 From: Konstantin Saurbier <saurbier@math.uni-bielefeld.de> To: freebsd-stable@freebsd.org Cc: saurbier@math.uni-bielefeld.de Subject: FreeBSD 6.0 panics - sbdrop Message-ID: <20060411150759.20a9e9d5.saurbier@math.uni-bielefeld.de>
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Hi,
I've encountered a strange problem while using FreeBSD 6.0 for our local mi=
rror (mirror.math.uni-bielefeld.de) and thus is providing access via ftp, h=
ttp, rsync and cvsup (all local and remote).
The system crashes periodically with a kernel panic (panic: sbdrop).
The uptimes between two crashes are going from a few hours to a few weeks.
The system is a i386, Intel Pentium 4 based with 512MB ram and a 3ware-7000=
(twe) raid controller containig 1 raid 5 set with approx. 1.9TB.
The kernel is a GENERIC kernel without changes of the config.
These are the kernel dumps:
Unread portion of the kernel message buffer:
panic: sbdrop
Uptime: 22h22m7s
Dumping 503 MB (2 chunks)
chunk 0: 1MB (159 pages) ... ok
chunk 1: 503MB (128752 pages) 487 471 455 439 423 407 391 375 359 343 327=
311 295 279 263 247 231 215 199 183 167 151 135 119 103 87 71 55 39 23 7
#0 doadump () at pcpu.h:165
165 __asm __volatile("movl %%fs:0,%0" : "=3Dr" (td));
(kgdb) backtrace
#0 doadump () at pcpu.h:165
#1 0xc068d10e in boot (howto=3D260) at /usr/src/sys/kern/kern_shutdown.c:3=
99
#2 0xc068d680 in panic (fmt=3D0xc090c16a "sbdrop")
at /usr/src/sys/kern/kern_shutdown.c:555
#3 0xc06d266c in sbdrop_locked (sb=3D0xc20aca84, len=3D1)
at /usr/src/sys/kern/uipc_socket2.c:1157
#4 0xc06d3d93 in sbdrop (sb=3D0xc20aca84, len=3D0)
at /usr/src/sys/kern/uipc_socket2.c:1208
#5 0xc0748a7d in tcp_input (m=3D0xc1c09100, off0=3D-1039845124)
at /usr/src/sys/netinet/tcp_input.c:1201
#6 0xc0740147 in ip_input (m=3D0xc1c09100)
at /usr/src/sys/netinet/ip_input.c:778
#7 0xc07171ff in netisr_processqueue (ni=3D0xc09ca4f8)
at /usr/src/sys/net/netisr.c:236
#8 0xc07174be in swi_net (dummy=3D0x0) at /usr/src/sys/net/netisr.c:349
#9 0xc06740e5 in ithread_loop (arg=3D0xc19c3280)
at /usr/src/sys/kern/kern_intr.c:547
#10 0xc0673110 in fork_exit (callout=3D0xc067402c <ithread_loop>, arg=3D0x0=
,=20
frame=3D0x0) at /usr/src/sys/kern/kern_fork.c:789
#11 0xc0894a1c in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:=
208
Now the output of bt full:
(kgdb) bt full
#0 doadump () at pcpu.h:165
No locals.
#1 0xc068d10e in boot (howto=3D260) at /usr/src/sys/kern/kern_shutdown.c:3=
99
first_buf_printf =3D 1
#2 0xc068d680 in panic (fmt=3D0xc090c16a "sbdrop")
at /usr/src/sys/kern/kern_shutdown.c:555
bootopt =3D 260
newpanic =3D 0
buf =3D "sbdrop", '\0' <repeats 249 times>
#3 0xc06d266c in sbdrop_locked (sb=3D0xc20aca84, len=3D1)
at /usr/src/sys/kern/uipc_socket2.c:1157
m =3D (struct mbuf *) 0x0
next =3D (struct mbuf *) 0x0
#4 0xc06d3d93 in sbdrop (sb=3D0xc20aca84, len=3D0)
at /usr/src/sys/kern/uipc_socket2.c:1208
No locals.
#5 0xc0748a7d in tcp_input (m=3D0xc1c09100, off0=3D-1039845124)
at /usr/src/sys/netinet/tcp_input.c:1201
dbuf =3D "\024\000\000\000\000=BB=C0=C1=A4\033\b=D4=E4=AC\211=C0X=
=BA\231=C1=AC\033\b=D4x\034\b=D4=C3M\211=C0G\000\000\000\b\000\000\000(\000=
\b=D4(\000l=C0"
sbuf =3D "\0003\234=C1l\033\b=D4\200=F2=AD=C1\0003\234=C1\224\033\b=
=D4=BF\201\211=C0\0003\234=C1\000\000\000\000\000\000\000\000\000=B9\226=C1=
\027\000\000\000\020(=DD=C1"
th =3D (struct tcphdr *) 0xc1b2f824
ip =3D (struct ip *) 0xc1b2f810
inp =3D (struct inpcb *) 0xc3ec5ca8
optp =3D (u_char *) 0xc1b2f838 "\001\001\b\n:\r=B7\027\004=CC\236=
=F2#E=B2W"
optlen =3D 12
len =3D 69
tlen =3D 0
off =3D 32
drop_hdrlen =3D 52
tp =3D (struct tcpcb *) 0xc20538fc
thflags =3D 16
so =3D (struct socket *) 0xc20ac9bc
todrop =3D 69
acked =3D 69
ourfinisacked =3D 0
needoutput =3D 0
tiwin =3D 5840
to =3D {to_flags =3D 1, to_tsval =3D 973977367, to_tsecr =3D 805188=
98,=20
to_mss =3D 0, to_requested_s_scale =3D 0 '\0', to_nsacks =3D 0 '\0',=20
to_sacks =3D 0x0}
headlocked =3D 0
rstreason =3D 69
ip6 =3D (struct ip6_hdr *) 0x0
isipv6 =3D 0
#6 0xc0740147 in ip_input (m=3D0xc1c09100)
at /usr/src/sys/netinet/ip_input.c:778
ip =3D (struct ip *) 0xc1b2f810
ia =3D (struct in_ifaddr *) 0xc1c0bb00
ifa =3D (struct ifaddr *) 0xc1c0bb00
checkif =3D 0
hlen =3D 20
sum =3D 0
dchg =3D 0
odst =3D {s_addr =3D 3250633472}
#7 0xc07171ff in netisr_processqueue (ni=3D0xc09ca4f8)
at /usr/src/sys/net/netisr.c:236
m =3D (struct mbuf *) 0xc1c09100
#8 0xc07174be in swi_net (dummy=3D0x0) at /usr/src/sys/net/netisr.c:349
ni =3D (struct netisr *) 0xc09ca4f8
bits =3D 0
i =3D 0
#9 0xc06740e5 in ithread_loop (arg=3D0xc19c3280)
at /usr/src/sys/kern/kern_intr.c:547
ih =3D (struct intrhand *) 0xc19c1080
p =3D (struct proc *) 0xc19b0624
count =3D 0
warned =3D 0
hlen =3D 20
sum =3D 0
dchg =3D 0
odst =3D {s_addr =3D 3250633472}
#7 0xc07171ff in netisr_processqueue (ni=3D0xc09ca4f8)
at /usr/src/sys/net/netisr.c:236
m =3D (struct mbuf *) 0xc1c09100
#8 0xc07174be in swi_net (dummy=3D0x0) at /usr/src/sys/net/netisr.c:349
ni =3D (struct netisr *) 0xc09ca4f8
bits =3D 0
i =3D 0
#9 0xc06740e5 in ithread_loop (arg=3D0xc19c3280)
at /usr/src/sys/kern/kern_intr.c:547
ih =3D (struct intrhand *) 0xc19c1080
p =3D (struct proc *) 0xc19b0624
count =3D 0
warned =3D 0
#10 0xc0673110 in fork_exit (callout=3D0xc067402c <ithread_loop>, arg=3D0x0=
,=20
frame=3D0x0) at /usr/src/sys/kern/kern_fork.c:789
p =3D (struct proc *) 0xc19b0624
#11 0xc0894a1c in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:=
208
No locals.
I hope that helps. If you need further information or if you have some hint=
s or directions for me, please send me a mail.
--=20
Best regards,
Konstantin Saurbier
------------------------------------------------------
Konstantin Saurbier Tel.: 0521 106 3861
Computerlabor Mathematik U5-138
Universitaet Bielefeld Universitaetsstr.25
33501 Bielefeld
email: saurbier@math.uni-bielefeld.de
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