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Regression #11470

Panic when using CBQ traffic shaping

Added by Jim Pingle about 2 months ago. Updated about 2 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
Traffic Shaper (ALTQ)
Target version:
CE-Next
Start date:
02/19/2021
Due date:
% Done:

0%

Estimated time:
Affected Version:
2.5.0
Affected Architecture:
Release Notes:
Default

Description

A couple users have reported a panic when using CBQ traffic shaping. It may also require using CBQ on VLAN interfaces.

db:0:kdb.enter.default>  bt
Tracing pid 12 tid 100039 td 0xfffff800053bf000
kdb_enter() at kdb_enter+0x37/frame 0xfffffe000043e610
vpanic() at vpanic+0x197/frame 0xfffffe000043e660
panic() at panic+0x43/frame 0xfffffe000043e6c0
trap_fatal() at trap_fatal+0x391/frame 0xfffffe000043e720
trap_pfault() at trap_pfault+0x4f/frame 0xfffffe000043e770
trap() at trap+0x286/frame 0xfffffe000043e880
calltrap() at calltrap+0x8/frame 0xfffffe000043e880
--- trap 0xc, rip = 0xffffffff80ec014e, rsp = 0xfffffe000043e950, rbp = 0xfffffe000043e980 ---
ether_8021q_frame() at ether_8021q_frame+0x2e/frame 0xfffffe000043e980
vlan_transmit() at vlan_transmit+0xc8/frame 0xfffffe000043e9f0
vlan_altq_start() at vlan_altq_start+0xb4/frame 0xfffffe000043ea20
cbqrestart() at cbqrestart+0x64/frame 0xfffffe000043ea50
rmc_restart() at rmc_restart+0x6f/frame 0xfffffe000043ea80
softclock_call_cc() at softclock_call_cc+0x141/frame 0xfffffe000043eb30
softclock() at softclock+0x79/frame 0xfffffe000043eb50
ithread_loop() at ithread_loop+0x23c/frame 0xfffffe000043ebb0
fork_exit() at fork_exit+0x7e/frame 0xfffffe000043ebf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe000043ebf0

Attached is a textdump archive from a separate user with the same backtrace.

1613673139905-textdump.tar (154 KB) 1613673139905-textdump.tar Jim Pingle, 02/19/2021 02:04 PM

History

#1 Updated by Viktor Gurov about 2 months ago

same issue: #11285

#2 Updated by Jim Pingle about 2 months ago

That doesn't look like the same issue, the backtrace is a quite a bit different despite both mentioning CBQ. They could be related, but they aren't close enough that I'd call them the same yet.

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