<![CDATA[Random crash]]>Hi, Everyone.

May I ask your expertise and experience in troubleshooting kernel panic. I have experience this kernel panic when looking in suricata alert logs. I was thinking it may be suricata. I just uninstall it and replace it with snort but still the issue persist but not as frequent when using suricata.

I have also attached the textdump.tar.0 file. I hope you can help point out what may have caused this crash.

textdump.tar.0

Below is Fatal trap captured:

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 02
fault virtual address	= 0x28
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff80ec01fe
stack pointer	        = 0x28:0xfffffe003f946a90
frame pointer	        = 0x28:0xfffffe003f946ac0
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		= 12 (swi4: clock (0))
trap number		= 12
panic: page fault
cpuid = 1
time = 1628755983
KDB: enter: panic
]]>https://forum.netgate.com/topic/165827/random-crashRSS for NodeTue, 21 Apr 2026 00:29:48 GMTSat, 14 Aug 2021 10:01:46 GMT60<![CDATA[Reply to Random crash on Fri, 20 Aug 2021 20:50:12 GMT]]>@stephenw10

Thanks for that info, I have created an account and provided the crash dump into the redmine ticket. I hope I could have provided the right information so they can fix the issue.

]]>https://forum.netgate.com/post/998026https://forum.netgate.com/post/998026Fri, 20 Aug 2021 20:50:12 GMT<![CDATA[Reply to Random crash on Fri, 20 Aug 2021 17:12:05 GMT]]>Looks like you're hitting this: https://redmine.pfsense.org/issues/11470

]]>https://forum.netgate.com/post/997990https://forum.netgate.com/post/997990Fri, 20 Aug 2021 17:12:05 GMT<![CDATA[Reply to Random crash on Thu, 19 Aug 2021 11:49:38 GMT]]>@stephenw10

As of this moment I have not seen any crash. Thanks for the help I will leave that vlan not included in QoS for now.

]]>https://forum.netgate.com/post/997812https://forum.netgate.com/post/997812Thu, 19 Aug 2021 11:49:38 GMT<![CDATA[Reply to Random crash on Sun, 15 Aug 2021 05:47:10 GMT]]>@stephenw10

Thanks for the suggestion, I will follow this and see if that fixes the issue. I'll update this ticket after a week to provide some update.

]]>https://forum.netgate.com/post/997126https://forum.netgate.com/post/997126Sun, 15 Aug 2021 05:47:10 GMT<![CDATA[Reply to Random crash on Sat, 14 Aug 2021 22:54:37 GMT]]>I would try one things at a time to try to isolate it.

So maybe remove queues from the VLAN first. If that doesn't work then switch back to PRIQ as a test.

Steve

]]>https://forum.netgate.com/post/997104https://forum.netgate.com/post/997104Sat, 14 Aug 2021 22:54:37 GMT<![CDATA[Reply to Random crash on Sat, 14 Aug 2021 21:17:42 GMT]]>@stephenw10

Thank you so much for your response, you may be correct. I have added a VLAN but it is a while ago, and no issue encounter. To think of it, this issue started happening when I recreated the QoS from PRIQ to CBQ and also including this new VLAN that I have created in the list.

Can you suggest what is the best approach to this? Do I recreate or just edit the existing and change back to PRIQ?

]]>https://forum.netgate.com/post/997094https://forum.netgate.com/post/997094Sat, 14 Aug 2021 21:17:42 GMT<![CDATA[Reply to Random crash on Sat, 14 Aug 2021 16:05:41 GMT]]>The key parts of that are:

db:0:kdb.enter.default>  show pcpu
cpuid        = 1
dynamic pcpu = 0xfffffe007f102380
curthread    = 0xfffff800043c4000: pid 12 tid 100035 "swi4: clock (0)"
curpcb       = 0xfffff800043c45a0
fpcurthread  = none
idlethread   = 0xfffff8000432a740: tid 100004 "idle: cpu1"
curpmap      = 0xffffffff8368d5a8
tssp         = 0xffffffff83717688
commontssp   = 0xffffffff83717688
rsp0         = 0xfffffe003f946e00
kcr3         = 0x3d0b000
ucr3         = 0xffffffffffffffff
scr3         = 0x223630000
gs32p        = 0xffffffff8371dea0
ldt          = 0xffffffff8371dee0
tss          = 0xffffffff8371ded0
tlb gen      = 1389740
curvnet      = 0
db:0:kdb.enter.default>  bt
Tracing pid 12 tid 100035 td 0xfffff800043c4000
kdb_enter() at kdb_enter+0x37/frame 0xfffffe003f946750
vpanic() at vpanic+0x197/frame 0xfffffe003f9467a0
panic() at panic+0x43/frame 0xfffffe003f946800
trap_fatal() at trap_fatal+0x391/frame 0xfffffe003f946860
trap_pfault() at trap_pfault+0x4f/frame 0xfffffe003f9468b0
trap() at trap+0x286/frame 0xfffffe003f9469c0
calltrap() at calltrap+0x8/frame 0xfffffe003f9469c0
--- trap 0xc, rip = 0xffffffff80ec01fe, rsp = 0xfffffe003f946a90, rbp = 0xfffffe003f946ac0 ---
ether_8021q_frame() at ether_8021q_frame+0x2e/frame 0xfffffe003f946ac0
vlan_transmit() at vlan_transmit+0xc8/frame 0xfffffe003f946b30
vlan_altq_start() at vlan_altq_start+0xb4/frame 0xfffffe003f946b60
cbqrestart() at cbqrestart+0x64/frame 0xfffffe003f946b90
rmc_restart() at rmc_restart+0x6f/frame 0xfffffe003f946bc0
softclock_call_cc() at softclock_call_cc+0x141/frame 0xfffffe003f946c70
softclock() at softclock+0x79/frame 0xfffffe003f946c90
ithread_loop() at ithread_loop+0x23c/frame 0xfffffe003f946cf0
fork_exit() at fork_exit+0x7e/frame 0xfffffe003f946d30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe003f946d30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---

This looks like a possible traffic shaping issue though because your logs are filled with:

config_aqm Unable to configure flowset, flowset busy!
config_aqm Unable to configure flowset, flowset busy!
config_aqm Unable to configure flowset, flowset busy!
config_aqm Unable to configure flowset, flowset busy!
config_aqm Unable to configure flowset, flowset busy!

Though previously that error has been harmless: https://redmine.pfsense.org/issues/8991
The backtrace shows it's VLAN related. If this has just started happening did you add a VLAN interface perhaps?

Steve

]]>https://forum.netgate.com/post/997076https://forum.netgate.com/post/997076Sat, 14 Aug 2021 16:05:41 GMT