[Bug 227720] Kernel panic in ppp server
bugzilla-noreply at freebsd.org
bugzilla-noreply at freebsd.org
Tue Oct 1 10:52:59 UTC 2019
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227720
freebsd at forceline.net changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |freebsd at forceline.net
--- Comment #47 from freebsd at forceline.net ---
Please take a look. Maybe this is similar bug.
#uname -a
FreeBSD vpn01 11.3-RELEASE FreeBSD 11.3-RELEASE #0: Thu Sep 5 10:41:12 MSK
2019 root at vpn01:/usr/obj/usr/src/sys/VPN01 amd64
# diff /root/kernels/VPN01 /usr/src/sys/amd64/conf/GENERIC
< ident VPN01
> ident GENERIC
---
< #options INET6 # IPv6 communications protocols
> options INET6 # IPv6 communications protocols
---
< #device lpt # Printer
> device lpt # Printer
---
< #device snd_cmi # CMedia CMI8338/CMI8738
< #device snd_csa # Crystal Semiconductor
CS461x/428x
< #device snd_emu10kx # Creative SoundBlaster Live!
and Audigy
< #device snd_es137x # Ensoniq AudioPCI ES137x
< #device snd_hda # Intel High Definition Audio
< #device snd_ich # Intel, NVidia and other ICH
AC'97 Audio
< #device snd_via8233 # VIA VT8233x Audio
---
> device snd_cmi # CMedia CMI8338/CMI8738
> device snd_csa # Crystal Semiconductor CS461x/428x
> device snd_emu10kx # Creative SoundBlaster Live! and Audigy
> device snd_es137x # Ensoniq AudioPCI ES137x
> device snd_hda # Intel High Definition Audio
> device snd_ich # Intel, NVidia and other ICH AC'97 Audio
> device snd_via8233 # VIA VT8233x Audio
---
< options INCLUDE_CONFIG_FILE # Include this file in kernel
< options KDB # Kernel debugger related code
< options KDB_TRACE # Print a stack trace for a panic
---
< options IPFIREWALL
< options IPFIREWALL_VERBOSE
< options IPFIREWALL_VERBOSE_LIMIT=1000
< options IPFIREWALL_DEFAULT_TO_ACCEPT
< options DUMMYNET
< options IPDIVERT
< options IPFILTER
< options IPFILTER_LOG
< options IPFILTER_LOOKUP
< options IPSTEALTH
---
< options NETGRAPH
< options NETGRAPH_SOCKET
< options NETGRAPH_IPFW
< options NETGRAPH_ETHER
< options NETGRAPH_BPF
< options NETGRAPH_PPPOE
# kgdb kernel.debug /var/crash/vmcore.2
GNU gdb 6.1.1 [FreeBSD]
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This GDB was configured as "amd64-marcel-freebsd"...
Unread portion of the kernel message buffer:
Fatal trap 12: page fault while in kernel mode
cpuid = 25; apic id = 21
fault virtual address = 0x0
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff80c21212
stack pointer = 0x28:0xfffffe085c59e3e0
frame pointer = 0x28:0xfffffe085c59e520
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 18740 (ppp)
trap number = 12
panic: page fault
cpuid = 25
KDB: stack backtrace:
#0 0xffffffff80b51a07 at kdb_backtrace+0x67
#1 0xffffffff80b0aa1e at vpanic+0x17e
#2 0xffffffff80b0a893 at panic+0x43
#3 0xffffffff80f854f9 at trap_fatal+0x369
#4 0xffffffff80f85559 at trap_pfault+0x49
#5 0xffffffff80f84bdd at trap+0x29d
#6 0xffffffff80f649cc at calltrap+0x8
#7 0xffffffff80c1bf80 at rn_walktree+0x80
#8 0xffffffff80c20b83 at sysctl_rtsock+0x1f3
#9 0xffffffff80b17e8b at sysctl_root_handler_locked+0x8b
#10 0xffffffff80b176e2 at sysctl_root+0x1f2
#11 0xffffffff80b17c06 at userland_sysctl+0x136
#12 0xffffffff80b17a8f at sys___sysctl+0x5f
#13 0xffffffff80f865f6 at amd64_syscall+0xa86
#14 0xffffffff80f652ad at fast_syscall_common+0x101
Uptime: 7m55s
Dumping 1351 out of 32604 MB:..2%..11%..21%..31%..41%..51%..61%..72%..81%..92%
#0 doadump () at pcpu.h:234
234 __asm("movq %%gs:%1,%0" : "=r" (td)
(kgdb) list *0xffffffff80c21212
0xffffffff80c21212 is in sysctl_dumpentry (/usr/src/sys/net/rtsock.c:1566).
1561 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
1562 info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask(rt_key(rt),
1563 rt_mask(rt), &ss);
1564 info.rti_info[RTAX_GENMASK] = 0;
1565 if (rt->rt_ifp && !(rt->rt_ifp->if_flags & IFF_DYING)) {
1566 info.rti_info[RTAX_IFP] =
rt->rt_ifp->if_addr->ifa_addr;
1567 info.rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr;
1568 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
1569 info.rti_info[RTAX_BRD] =
rt->rt_ifa->ifa_dstaddr;
1570 }
Current language: auto; currently minimal
(kgdb) backtrace
#0 doadump () at pcpu.h:234
#1 0xffffffff80b0a638 in kern_reboot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:388
#2 0xffffffff80b0aa58 in vpanic (fmt=<value optimized out>, ap=<value
optimized out>) at /usr/src/sys/kern/kern_shutdown.c:781
#3 0xffffffff80b0a893 in panic (fmt=<value optimized out>) at
/usr/src/sys/kern/kern_shutdown.c:712
#4 0xffffffff80f854f9 in trap_fatal (frame=0xfffffe085c59e320, eva=0) at
/usr/src/sys/amd64/amd64/trap.c:904
#5 0xffffffff80f85559 in trap_pfault (frame=0xfffffe085c59e320, usermode=0) at
pcpu.h:234
#6 0xffffffff80f84bdd in trap (frame=0xfffffe085c59e320) at
/usr/src/sys/amd64/amd64/trap.c:438
#7 0xffffffff80f649cc in calltrap () at
/usr/src/sys/amd64/amd64/exception.S:231
#8 0xffffffff80c21212 in sysctl_dumpentry (rn=0xfffff80188cef000,
vw=0xfffffe085c59e690) at /usr/src/sys/net/rtsock.c:1566
#9 0xffffffff80c1bf80 in rn_walktree (h=<value optimized out>,
f=0xffffffff80c21110 <sysctl_dumpentry>, w=0xfffffe085c59e690) at
/usr/src/sys/net/radix.c:1094
#10 0xffffffff80c20b83 in sysctl_rtsock (oidp=<value optimized out>,
arg1=<value optimized out>, arg2=<value optimized out>, req=<value optimized
out>) at /usr/src/sys/net/rtsock.c:1931
#11 0xffffffff80b17e8b in sysctl_root_handler_locked (oid=0xffffffff81a51b28,
arg1=0xfffffe085c59e908, arg2=4, req=0xfffffe085c59e840,
tracker=0xfffffe085c59e7b8)
at /usr/src/sys/kern/kern_sysctl.c:165
#12 0xffffffff80b176e2 in sysctl_root (arg1=0xfffffe085c59e908, arg2=4,
req=0xfffffe085c59e840) at /usr/src/sys/kern/kern_sysctl.c:1915
#13 0xffffffff80b17c06 in userland_sysctl (td=<value optimized out>,
name=0xfffffe085c59e900, namelen=6, old=0x0, oldlenp=<value optimized out>,
inkernel=<value optimized out>, new=0x0,
newlen=0, retval=0xfffffe085c59e968, flags=0) at
/usr/src/sys/kern/kern_sysctl.c:2011
#14 0xffffffff80b17a8f in sys___sysctl (td=0xfffff80233776620,
uap=0xfffff80233776b58) at /usr/src/sys/kern/kern_sysctl.c:1945
#15 0xffffffff80f865f6 in amd64_syscall (td=0xfffff80233776620, traced=0) at
src/sys/amd64/amd64/../../kern/subr_syscall.c:132
#16 0xffffffff80f652ad in fast_syscall_common () at
/usr/src/sys/amd64/amd64/exception.S:494
#17 0x0000000801de0bba in ?? ()
Previous frame inner to this frame (corrupt stack?)
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