From: "=?ISO-8859-2?Q?Pawe=B3_Ma=B3achowski?=" <pawmal@unia.3lo.lublin.pl> To: freebsd-bugs@FreeBSD.org Cc: al <bsdal@otterhole.ods.org> Subject: Re: kern/43396: repeatable kernel panic in if_xl.c:xl_newbuf:MCLGET Message-ID: <20021030234818Z1883516-11927%2B24@mx1.lublin.pl> In-Reply-To: <20020926201626.GA41858@otterhole.ods.org> References: <20020926183624Z496406-30331%2B25@mx1.lublin.pl>
next in thread | previous in thread | raw e-mail | index | archive | help
On 26 Sep 02, at 16:16, al wrote:
> Yes, the problem does seem related. I did a search of the bug
> database first, but I guess I failed. I will try your
> recommendation of increasing the size of nmbclusters.
And?
> (I notice that you have a IPF,IPFW,DUMMYNET, and similar things
> installed.)
>
> Feel free to close this bug ticket after the ticket 42597
> identifies that others (me) have the probem too.
[...]
> > Say `hello' to my gargantua host: kern/42597. ;)
> >
> > My typical uptime was 1-4 days.
> > I've added kern.ipc.nmbclusters="32768" to /boot/loader.conf
> > (previosly this was autosized, I have 256MB od RAM, also note
> > they were not exhausetd). After the change, machine has 15 days
> > uptime and still works but I won't rely on it (magic).
Well, after increasing nmbclusters to 32k stability was
improved. But, after todays quite heavy networking with
about 12-13 bpf opened (dhcpd, trafd, trafshow, tcpdump, ...),
it crashed again when I tried to use next free bpf,
calling nmap -sP. But panic message is different than `usual'.
Actually, I'm not sure, if the bug is strictly related with if_xl
or maybe something `around mbufs'. I had very similar problem to
kern/44741 in the past (before increasing nmbclusters) -- there
were ENOBUFS from time to time but netstat -m claimed that buffers
were never exhausted (kern/42597). They were never exhausetd but after
increasing problem was avoided, it's strange. :)
It is 4.6.2-RELEASE.
This GDB was configured as "i386-unknown-freebsd"...
IdlePTD at phsyical address 0x00523000
initial pcb at physical address 0x0045bf00
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x698d6d8f
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc02168d2
stack pointer = 0x10:0xd5773c88
frame pointer = 0x10:0xd5773c94
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 = 41068 (nmap)
interrupt mask = net tty
trap number = 12
panic: page fault
syncing disks... 3
done
Uptime: 5d2h36m51s
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1 0xc01fb2a3 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:316
#2 0xc01fb6c8 in poweroff_wait (junk=0xc03e9e0c, howto=-1069639377)
at /usr/src/sys/kern/kern_shutdown.c:595
#3 0xc0378d82 in trap_fatal (frame=0xd5773c48, eva=1770876303)
at /usr/src/sys/i386/i386/trap.c:966
#4 0xc0378a55 in trap_pfault (frame=0xd5773c48, usermode=0, eva=1770876303)
at /usr/src/sys/i386/i386/trap.c:859
#5 0xc0378613 in trap (frame={tf_fs = -957939696, tf_es = -713621488,
tf_ds = -955383792, tf_edi = 6422528, tf_esi = 1, tf_ebp = -713605996,
tf_isp = -713606028, tf_ebx = 1, tf_edx = 1770876303, tf_ecx = 0,
tf_eax = 6422528, tf_trapno = 12, tf_err = 0, tf_eip = -1071552302,
tf_cs = 8, tf_eflags = 66050, tf_esp = 16, tf_ss = -1058100736})
at /usr/src/sys/i386/i386/trap.c:458
#6 0xc02168d2 in m_get (how=1, type=1) at /usr/src/sys/kern/uipc_mbuf.c:520
#7 0xc021834f in m_copyback (m0=0xc0f12500, off=0, len=56,
cp=0xc7629990 "6\022\003") at /usr/src/sys/kern/uipc_mbuf.c:1298
#8 0xc0249d41 in rt_msg1 (type=1, rtinfo=0xd5773d28)
at /usr/src/sys/net/rtsock.c:615
#9 0xc0249ed9 in rt_missmsg (type=1, rtinfo=0xd5773d28, flags=132101, error=0)
at /usr/src/sys/net/rtsock.c:718
#10 0xc02482df in rtalloc1 (dst=0xd451bb40, report=1, ignflags=65536)
at /usr/src/sys/net/route.c:178
#11 0xc02481d8 in rtalloc_ign (ro=0xd451bb3c, ignore=65536)
at /usr/src/sys/net/route.c:111
#12 0xc0257857 in ip_output (m0=0xc0ebc500, opt=0x0, ro=0xd451bb3c, flags=34,
imo=0x0) at /usr/src/sys/netinet/ip_output.c:271
#13 0xc025974b in rip_output (m=0xc0ebc500, so=0xd25c6680, dst=1288182700)
at /usr/src/sys/netinet/raw_ip.c:260
#14 0xc0259b8f in rip_send (so=0xd25c6680, flags=0, m=0xc0ebc500, nam=0xc6e85000,
control=0x0, p=0xd56a5560) at /usr/src/sys/netinet/raw_ip.c:583
#15 0xc021996f in sosend (so=0xd25c6680, addr=0xc6e85000, uio=0xd5773ecc,
top=0xc0ebc500, control=0x0, flags=0, p=0xd56a5560)
at /usr/src/sys/kern/uipc_socket.c:609
#16 0xc021cd0b in sendit (p=0xd56a5560, s=4, mp=0xd5773f0c, flags=0)
at /usr/src/sys/kern/uipc_syscalls.c:585
#17 0xc021ce0e in sendto (p=0xd56a5560, uap=0xd5773f80)
at /usr/src/sys/kern/uipc_syscalls.c:638
#18 0xc0379031 in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 0,
tf_esi = 0, tf_ebp = -1077954900, tf_isp = -713605164, tf_ebx = 134734112,
tf_edx = 4, tf_ecx = 0, tf_eax = 133, tf_trapno = 0, tf_err = 2,
tf_eip = 672121996, tf_cs = 31, tf_eflags = 643, tf_esp = -1077954960,
tf_ss = 47}) at /usr/src/sys/i386/i386/trap.c:1167
#19 0xc036a125 in Xint0x80_syscall ()
#20 0x8053238 in ?? ()
#21 0x8050be5 in ?? ()
#22 0x8050269 in ?? ()
#23 0x804f5bf in ?? ()
#24 0x804cd24 in ?? ()
#25 0x8049e08 in ?? ()
#26 0x8049af5 in ?? ()
(kgdb) up 6
#6 0xc02168d2 in m_get (how=1, type=1) at /usr/src/sys/kern/uipc_mbuf.c:520
520 MGET(m, how, type);
PM
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20021030234818Z1883516-11927%2B24>