Date: Thu, 10 Oct 1996 14:40:21 -0500 (CDT) From: Karl Denninger <karl@Mcs.Net> To: hackers@freebsd.org, current@freebsd.org Subject: Crash in -current (from the current SNAP) Message-ID: <199610101940.OAA10151@Jupiter.Mcs.Net>
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#0 boot (howto=260) at ../../kern/kern_shutdown.c:237
#1 0xf0113bf2 in panic (fmt=0xf01bc6af "page fault")
at ../../kern/kern_shutdown.c:361
#2 0xf01bd20a in trap_fatal (frame=0xf01e3d0c) at ../../i386/i386/trap.c:741
#3 0xf01bccf8 in trap_pfault (frame=0xf01e3d0c, usermode=0)
at ../../i386/i386/trap.c:652
#4 0xf01bc9df in trap (frame={tf_es = 16, tf_ds = 16, tf_edi = 0,
tf_esi = -216777728, tf_ebp = -266453672, tf_isp = -266453708,
tf_ebx = -215471872, tf_edx = 0, tf_ecx = -218725632,
tf_eax = -216503296, tf_trapno = 12, tf_err = 0, tf_eip = -267181782,
tf_cs = 8, tf_eflags = 66118, tf_esp = 0, tf_ss = -215471872})
at ../../i386/i386/trap.c:311
#5 0xf01b2051 in calltrap ()
#6 0xf0198fc8 in ffs_sync (mp=0xf2f9bc00, waitfor=2, cred=0xf1f5f880,
p=0xf0208e74) at ../../ufs/ffs/ffs_vfsops.c:817
#7 0xf01335cb in sync (p=0xf0208e74, uap=0x0, retval=0x0)
at ../../kern/vfs_syscalls.c:357
#8 0xf011380d in boot (howto=256) at ../../kern/kern_shutdown.c:181
#9 0xf0113bf2 in panic (fmt=0xf01bc6af "page fault")
at ../../kern/kern_shutdown.c:361
#10 0xf01bd20a in trap_fatal (frame=0xf01e3e90) at ../../i386/i386/trap.c:741
#11 0xf01bccf8 in trap_pfault (frame=0xf01e3e90, usermode=0)
at ../../i386/i386/trap.c:652
---Type <return> to continue, or q <return> to quit---
#12 0xf01bc9df in trap (frame={tf_es = 16, tf_ds = 16, tf_edi = -227006164,
tf_esi = -215122688, tf_ebp = -266453184, tf_isp = -266453320,
tf_ebx = -211072256, tf_edx = 1073610751, tf_ecx = 0,
tf_eax = 201893069, tf_trapno = 12, tf_err = 2, tf_eip = -267093275,
tf_cs = 8, tf_eflags = 66050, tf_esp = 44, tf_ss = 20})
at ../../i386/i386/trap.c:311
#13 0xf01b2051 in calltrap ()
#14 0xf01447b2 in ip_input (m=0xf2782900) at ../../netinet/ip_input.c:508
#15 0xf0144828 in ipintr () at ../../netinet/ip_input.c:529
#16 0xf01b336d in swi_net_next ()
#17 0xf0125827 in pffasttimo (arg=0x0) at ../../kern/uipc_domain.c:234
#18 0xf010afd4 in softclock () at ../../kern/kern_clock.c:665
Oh oh....
ip_input, at line 529, is this:
/*
* Switch out to protocol's input routine.
*/
ipstat.ips_delivered++;
>>>> (*inetsw[ip_protox[ip->ip_p]].pr_input)(m, hlen);
return;
What's going on here?
These are somewhat frequent. The address being passed to ip_input looks ok
(it appears to be in kernel space)....
Given that it is a timeout call that is generating this, why do I think
this has something to do with the anti-syn patches?
Did anyone check the spl() levels in those changes to make sure that the
structures aren't getting mangled during processing?
--
--
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