Date: Tue, 18 Jul 2006 22:23:26 +0200 From: "Pawel Worach" <pawel.worach@gmail.com> To: "Randall Stewart" <rrs@cisco.com> Cc: freebsd-net@freebsd.org Subject: Re: SCTP Message-ID: <d227e09e0607181323q18e53947p942c944602c43cfe@mail.gmail.com> In-Reply-To: <44BB7A92.9080008@cisco.com> References: <44BB7A92.9080008@cisco.com>
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On 7/17/06, Randall Stewart <rrs@cisco.com> wrote:
> All:
>
> Just a friendly reminder/prod... if you have started
> testing SCTP.. thats great (any feedback?)..
> and if you have not .. please do so :-D
Hi,
I played around a bit with NetPIPE, FreeBSD-CURRENT in one end and
Linux 2.6.17 in the other over a gigabit crossover cable network, 1500
MTU. FreeBSD crashes after a while. I do have MAC enabled (no policy
modules loaded at the time), it looks like it is involved. I think I
can reproduce this, made it happen on both attempts.
For the record, I modified the patch a bit to make it compile, the
syscalls numbers collide with new threading syscalls added recently,
so I moved the thr syscalls up a notch. And I removed this #ifdef MAC
part of the patch due to duplicate sctp_bad labels.
+#ifdef MAC
+sctp_bad:
+#endif
+ sctp_bad:
+ free(iov, M_IOV);
Any more info I can provide ?
~/sctp/np> ./NPsctp -h 192.168.10.1
...
68: 16384 bytes 71 times --> 179.87 Mbps in 694.94 usec
69: 16387 bytes 71 times --> 178.78 Mbps in 699.33 usec
70: 24573 bytes 71 times --> 198.43 Mbps in 944.80 usec
71: 24576 bytes 70 times --> 199.18 Mbps in 941.35 usec
72: 24579 bytes 70 times --> 198.82 Mbps in 943.19 usec
73: 32765 bytes 35 times --> 210.05 Mbps in 1190.07 usec
74: 32768 bytes 42 times --> 208.48 Mbps in 1199.15 usec
75: 32771 bytes 41 times --> 208.00 Mbps in 1202.03 usec
76: 49149 bytes 41 times --> 234.43 Mbps in 1599.55 usec
77: 49152 bytes 41 times --> 300.20 Mbps in 1249.17 usec
78: 49155 bytes 53 times --> 299.66 Mbps in 1251.51 usec
79: 65533 bytes 26 times --> 4.77 Mbps in 104844.52 usec
80: 65536 bytes 3 times --> 3.70 Mbps in 135258.48 usec
81: 65539 bytes 3 times --> 3.70 Mbps in 135257.16 usec
82: 98301 bytes 3 times --> 7.36 Mbps in 101946.00 usec
83: 98304 bytes 3 times --> 7.36 Mbps in 101923.51 usec
84: 98307 bytes 3 times --> 7.36 Mbps in 101945.48 usec
85: 131069 bytes 3 times --> [stalls here]
then a couple of seconds later...
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x0
fault code = supervisor write, page not present
instruction pointer = 0x20:0xc06a7e16
stack pointer = 0x28:0xd35e5174
frame pointer = 0x28:0xd35e5174
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 12 (swi1: net)
trap number = 12
panic: page fault
KDB: stack backtrace:
kdb_backtrace(c078488a,c07e2500,c07790c0,d35e5028,100,...) at kdb_backtrace+0x2e
panic(c07790c0,c079de93,c2466a70,1,1,...) at panic+0xb7
trap_fatal(d35e5134,0,2,8,e5df6f6e,...) at trap_fatal+0x342
trap_pfault(d35e5134,0,0,0,0,...) at trap_pfault+0x245
trap(8,ffff0028,7fff0028,c104db80,0,...) at trap+0x3e3
calltrap() at calltrap+0x5
--- trap 0xc, eip = 0xc06a7e16, esp = 0xd35e5174, ebp = 0xd35e5174 ---
mac_labelzone_dtor(0,14,0,0,0,...) at mac_labelzone_dtor+0x6
uma_zfree_arg(c104db80,0,0,d35e51d0,c06acfc4,...) at uma_zfree_arg+0x2f
mac_labelzone_free(0) at mac_labelzone_free+0x22
mac_socket_label_free(0,c2ad4000,d35e5200,c0587da8,c2ad4000,...) at
mac_socket_label_free+0x94
mac_destroy_socket(c2ad4000,40,0,c2ad4000,4,...) at mac_destroy_socket+0x18
sodealloc(c2ad4000,c2ad4000,0,0,4,...) at sodealloc+0x168
sofree(c2ad4000,0,0,0,c10372c8,...) at sofree+0x311
sctp_inpcb_free(c2c98000,0,0,d35e52b4,c060c90d,...) at sctp_inpcb_free+0x10d6
sctp_free_assoc(c2c98000,c2cad958,0,c2cafcd0,d35e534c,...) at
sctp_free_assoc+0x1a5b
sctp_handle_shutdown_complete(c2cf3830,c2cad958,c2cafcd0,d35e534c,c0754bbe,...)
at sctp_handle_shutdown_complete+0x228
sctp_process_control(c2cea500,14,d35e5bb8,24,c2cf3824,...) at
sctp_process_control+0x1388
sctp_common_input_processing(d35e5c30,14,20,24,c2cf3824,...) at
sctp_common_input_processing+0x87
sctp_input(c2cea500,14,c255c800,1,0,...) at sctp_input+0x383
ip_input(c2cea500,d35e5c88,c0553c65,8,0,...) at ip_input+0x70c
netisr_processqueue(c07e75b8,c2467870,c2467870,c24668d0,d35e5ce4,...)
at netisr_processqueue+0xe9
swi_net(0,c2467870,80246,b9669622,c2467870,...) at swi_net+0x12f
ithread_execute_handlers(c24668d0,c2463500,c24668d0,c2467870,c24668d0,...)
at ithread_execute_handlers+0x188
ithread_loop(c2433ad0,d35e5d38,0,0,c2433ad0,...) at ithread_loop+0x76
fork_exit(c051d900,c2433ad0,d35e5d38) at fork_exit+0x7f
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xd35e5d6c, ebp = 0 ---
Uptime: 27m28s
Physical memory: 502 MB
Dumping 68 MB: 53 37 21 5
#0 doadump () at pcpu.h:166
166 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) bt
#0 doadump () at pcpu.h:166
#1 0xc053c0b4 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
#2 0xc053c42d in panic (fmt=0xc07790c0 "%s")
at /usr/src/sys/kern/kern_shutdown.c:565
#3 0xc074a2d2 in trap_fatal (frame=0xd35e5134, eva=0)
at /usr/src/sys/i386/i386/trap.c:869
#4 0xc0749f65 in trap_pfault (frame=0xd35e5134, usermode=0, eva=0)
at /usr/src/sys/i386/i386/trap.c:778
#5 0xc0749ab3 in trap (frame=
{tf_fs = 8, tf_es = -65496, tf_ds = 2147418152, tf_edi =
-1056646272, tf_esi = 0, tf_ebp = -748793484, tf_isp = -748793504,
tf_ebx = 0, tf_edx = 0, tf_ecx = 4, tf_eax = 0, tf_trapno = 12, tf_err
= 2, tf_eip = -1066762730, tf_cs = 32, tf_eflags = 66178, tf_esp =
-748793432, tf_ss = -1066463889})
at /usr/src/sys/i386/i386/trap.c:463
#6 0xc0738cfa in calltrap () at /usr/src/sys/i386/i386/exception.s:138
#7 0xc06a7e16 in mac_labelzone_dtor (mem=0x0, size=20, arg=0x0)
at /usr/src/sys/security/mac/mac_label.c:74
#8 0xc06f0d6f in uma_zfree_arg (zone=0xc104db80, item=0x0, udata=0x0)
at /usr/src/sys/vm/uma_core.c:2263
#9 0xc06a7e72 in mac_labelzone_free (label=0x0) at uma.h:303
#10 0xc06acfc4 in mac_socket_label_free (label=0x0)
at /usr/src/sys/security/mac/mac_socket.c:151
#11 0xc06ad088 in mac_destroy_socket (socket=0xc2ad4000)
---Type <return> to continue, or q <return> to quit---
at /usr/src/sys/security/mac/mac_socket.c:168
#12 0xc0587da8 in sodealloc (so=0xc2ad4000)
at /usr/src/sys/kern/uipc_socket.c:291
#13 0xc0588971 in sofree (so=0xc2ad4000) at /usr/src/sys/kern/uipc_socket.c:592
#14 0xc0604986 in sctp_inpcb_free (inp=0xc2c98000, immediate=0)
at /usr/src/sys/netinet/sctp_pcb.c:2582
#15 0xc060817b in sctp_free_assoc (inp=0xc2c98000, stcb=0xc2cad958,
from_inpcbfree=0) at /usr/src/sys/netinet/sctp_pcb.c:3896
#16 0xc0617b58 in sctp_handle_shutdown_complete (cp=0xc2cf3830,
stcb=0xc2cad958, net=0x0) at /usr/src/sys/netinet/sctp_input.c:2500
#17 0xc061a7d8 in sctp_process_control (m=0xc2cea500, iphlen=20,
offset=0xd35e5bb8, length=36, sh=0xc2cf3824, ch=0xc2cf3830,
inp=0xc2c98000, stcb=0xc2cad958, netp=0xd35e5bd0, fwd_tsn_seen=0xd35e5b98)
at /usr/src/sys/netinet/sctp_input.c:4267
#18 0xc061ad87 in sctp_common_input_processing (mm=0xd35e5c30, iphlen=20,
offset=32, length=36, sh=0xc2cf3824, ch=0xc2cf3830, inp=0xc2c98000,
stcb=0xc2cad958, net=0xc2cafcd0, ecn_bits=2 '\002')
at /usr/src/sys/netinet/sctp_input.c:4583
#19 0xc061b5e3 in sctp_input (m=0xc2cea500, off=20)
at /usr/src/sys/netinet/sctp_input.c:4994
#20 0xc05ec1ec in ip_input (m=0xc2cea500)
at /usr/src/sys/netinet/ip_input.c:658
#21 0xc05d2de9 in netisr_processqueue (ni=0xc07e75b8)
---Type <return> to continue, or q <return> to quit---
at /usr/src/sys/net/netisr.c:236
#22 0xc05d305f in swi_net (dummy=0x0) at /usr/src/sys/net/netisr.c:349
#23 0xc051d808 in ithread_execute_handlers (p=0xc24668d0, ie=0xc2463500)
at /usr/src/sys/kern/kern_intr.c:662
#24 0xc051d976 in ithread_loop (arg=0xc2433ad0)
at /usr/src/sys/kern/kern_intr.c:745
#25 0xc051c38f in fork_exit (callout=0xc051d900 <ithread_loop>, arg=0x0,
frame=0x0) at /usr/src/sys/kern/kern_fork.c:822
#26 0xc0738d5c in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:199
--
Pawel
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