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From:      "=?ISO-8859-2?Q?Pawe=B3_Ma=B3achowski?=" <pawmal@unia.3lo.lublin.pl>
To:        David Greenman-Lawrence <dg@dglawrence.com>, freebsd-bugs@FreeBSD.org
Subject:   Re: kern/42260: 4.6-STABLE kernel panic, fxp related
Message-ID:  <20020901123326Z1512019-2697%2B1@mx1.lublin.pl>
In-Reply-To: <200208312000.g7VK0CnX002462@freefall.freebsd.org>

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On 31 Aug 02, at 13:00, David Greenman-Lawrence wrote:

>  >#15 0xc037859f in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16,
>  >      tf_edi = 6756538, tf_esi = 1, tf_ebp = -1069570240, tf_isp = -1069570280,
>  >      tf_ebx = -1058483712, tf_edx = -1058799616, tf_ecx = -1608507392,
>  >      tf_eax = 1828738, tf_trapno = 12, tf_err = 2, tf_eip = -1071494537,
>  >      tf_cs = 8, tf_eflags = 66070, tf_esp = -1058571520, tf_ss = -1058512894})
>  >    at /usr/src/sys/i386/i386/trap.c:466
>  >#16 0xc0224a77 in m_getcl (how=1, type=1, flags=2)
>  >    at /usr/src/sys/kern/uipc_mbuf.c:589
>  >#17 0xc01ae05f in fxp_add_rfabuf (sc=0xc15bca00, oldm=0xc0e77b00)
>  >    at /usr/src/sys/dev/fxp/if_fxp.c:1863
>  
>     Looks like a problem in the new m_getcl() function, which has had some
>  problems recently, but were thought to be fixed.

it was fresh 4.6-STABLE.
note, there are two different kind of panics. only 2nd shows
page fault in m_getcl(). 1st was in sosend().
both are happening to me and are always identical.
both were kern/uipc* related.


1. 

 Fatal trap 12: page fault while in kernel mode
 fault virtual address   = 0xc0ffe798
 fault code              = supervisor write, page not present
 instruction pointer     = 0x8:0xc022794f
 stack pointer           = 0x10:0xcdf07e30
 frame pointer           = 0x10:0xcdf07e54
 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         = 503 (ftpd)
 interrupt mask          = net tty
 trap number             = 12
 panic: page fault
 syncing disks... 7 1
 done
 Uptime: 24m38s


 #6  0xc022794f in sosend (so=0xcccde240, addr=0x0, uio=0xcdf07ed4, 
top=0x0,
     control=0x0, flags=0, p=0xcc2e8ea0) at 
/usr/src/sys/kern/uipc_socket.c:567
 567                                     MCLGET(m, M_WAIT);



2.

 Fatal trap 12: page fault while in kernel mode
 fault virtual address   = 0xc0ffe782
 fault code              = supervisor write, page not present
 instruction pointer     = 0x8:0xc0224a77
 stack pointer           = 0x10:0xc03fa72c
 frame pointer           = 0x10:0xc03fa740
 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         = Idle
 interrupt mask          = net tty
 trap number             = 12
 panic: page fault

 syncing disks...
 
 Fatal trap 12: page fault while in kernel mode
 fault virtual address   = 0x30
 fault code              = supervisor read, page not present
 instruction pointer     = 0x8:0xc030c048
 stack pointer           = 0x10:0xc03fa54c
 frame pointer           = 0x10:0xc03fa554
 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         = Idle
 interrupt mask          = net tty bio cam
 trap number             = 12
 panic: page fault
 Uptime: 3m8s

#6  0xc030c048 in acquire_lock (lk=0xc042f37c)
    at /usr/src/sys/ufs/ffs/ffs_softdep.c:266
266             lk->lkt_held = CURPROC->p_pid;
#16 0xc0224a77 in m_getcl (how=1, type=1, flags=2)
    at /usr/src/sys/kern/uipc_mbuf.c:589
589                     MCLGET(mp, how);




-- 
Paweł Małachowski, mailto:pawmal#freebsd,lublin,pl

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