Hi,
I have problems with panics since 2 years. Diffrent machines, diffrent versions
of FreeBSD (9+). Nothing has changed even in 12-CURRENT.
FreeBSD is used as router/nat(ipnat)/ipfw/dummynet for over 400 desktops.
I have 2 panics in 3h. Previous with only screen photo:
https://postimg.org/image/g6eq69jkf/
And last:
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:
<110>ipfw: 3700 Deny TCP 200.100.229.149:12750 155.133.23.8:23 out via em1
<110>ipfw: 3700 Deny TCP 216.243.31.2:40159 155.133.22.217:443 out via em1
<110>ipfw: 3700 Deny TCP 192.168.0.101:48000 31.13.81.13:443 in via em1
Kernel page fault with the following non-sleepable locks held:
shared rw ipf IP NAT rwlock (ipf IP NAT rwlock) r = 0 (0x818d6170)
locked @ /usr/src/sys/contrib/ipfilter/netinet/ip_nat.c:4925
shared rw ipf filter rwlock (ipf filter rwlock) r = 0 (0x818d6058)
locked @ /usr/src/sys/contrib/ipfilter/netinet/fil.c:3024
shared rm PFil shared rmlock (PFil shared rmlock) r = 0 (0x81eab3f0)
locked @ /usr/src/sys/net/pfil.c:78
stack backtrace:
#0 0x80af7b90 at witness_debugger+0x70
#1 0x80af8e77 at witness_warn+0x3d7
#2 0x80f34507 at trap_pfault+0x57
#3 0x80f33bbb at trap+0x28b
#4 0x80f14461 at calltrap+0x8
#5 0x803a7e87 at ipf_proxy_check+0x127
#6 0x8039b36b at ipf_nat_out+0x6db
#7 0x8039a72f at ipf_nat_checkout+0x1ff
#8 0x80381496 at ipf_check+0x726
#9 0x80ba08cb at pfil_run_hooks+0x8b
#10 0x80c0326b at ip_tryforward+0x26b
#11 0x80c058b7 at ip_input+0x377
#12 0x80b9f7b0 at netisr_dispatch_src+0x80
#13 0x80cecc07 at dummynet_send+0x167
#14 0x80cec530 at dummynet_task+0x310
#15 0x80aeb5bc at taskqueue_run_locked+0x13c
#16 0x80aec138 at taskqueue_thread_loop+0x88
#17 0x80a5bd74 at fork_exit+0x84
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0xe
fault code = supervisor read data, page not present
instruction pointer = 0x20:0x803a09cd
stack pointer = 0x28:0xfe023ab3e4e0
frame pointer = 0x28:0xfe023ab3e5c0
code segment= base 0x0, limit 0xf, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags= interrupt enabled, resume, IOPL = 0
current process = 0 (dummynet)
trap number = 12
panic: page fault
cpuid = 0
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfe023ab3e060
vpanic() at vpanic+0x182/frame 0xfe023ab3e0e0
panic() at panic+0x43/frame 0xfe023ab3e140
trap_fatal() at trap_fatal+0x331/frame 0xfe023ab3e1a0
trap_pfault() at trap_pfault+0x1fd/frame 0xfe023ab3e200
trap() at trap+0x28b/frame 0xfe023ab3e410
calltrap() at calltrap+0x8/frame 0xfe023ab3e410
--- trap 0xc, rip = 0x803a09cd, rsp = 0xfe023ab3e4e0, rbp =
0xfe023ab3e5c0 ---
ipf_p_ftp_process() at ipf_p_ftp_process+0x16d/frame 0xfe023ab3e5c0
ipf_proxy_check() at ipf_proxy_check+0x127/frame 0xfe023ab3e630
ipf_nat_out() at ipf_nat_out+0x6db/frame 0xfe023ab3e690
ipf_nat_checkout() at ipf_nat_checkout+0x1ff/frame 0xfe023ab3e740
ipf_check() at ipf_check+0x726/frame 0xfe023ab3e8b0
pfil_run_hooks() at pfil_run_hooks+0x8b/frame 0xfe023ab3e940
ip_tryforward() at ip_tryforward+0x26b/frame 0xfe023ab3e9c0
ip_input() at ip_input+0x377/frame 0xfe023ab3ea20
netisr_dispatch_src() at netisr_dispatch_src+0x80/frame 0xfe023ab3ea80
dummynet_send() at dummynet_send+0x167/frame 0xfe023ab3eac0
dummynet_task() at dummynet_task+0x310/frame 0xfe023ab3eb20
taskqueue_run_locked() at taskqueue_run_locked+0x13c/frame 0xfe023ab3eb80
taskqueue_thread_loop() at taskqueue_thread_loop+0x88/frame 0xfe023ab3ebb0
fork_exit() at fork_exit+0x84/frame 0xfe023ab3ebf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfe023ab3ebf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
Uptime: 3h12m45s
Dumping 641 out of 8158 MB:..3%..13%..23%..33%..43%..53%..63%..73%..83%..93%
Reading symbols from /boot/kernel/fdescfs.ko...Reading symbols from
/usr/lib/debug//boot/kernel/fdescfs.ko.debug...done.
done.
Loaded symbols for /boot/kernel/fdescfs.ko
Reading symbols from /boot/kernel/iscsi.ko...Reading symbols from
/usr/lib/debug//boot/kernel/iscsi.ko.debug...done.
done.
Loaded symbols for /boot/kernel/iscsi.ko
#0 doadump (textdump=1) at pcpu.h:221
221 __asm("movq %%gs:%1,%0" : "=r" (td)
(kgdb) list *0x803a09cd
0x803a09cd is in ipf_p_ftp_process
