Guest

Preview Tool

Cisco Bug: CSCvv51321 - 9120 kernel panic:assert:"SCB_PS(scb) || wlc_twt_scb_active(wlc->twti, scb) CS00011031279

Last Modified

Oct 16, 2020

Products (1)

  • Cisco Aironet 1850 Series Access Points

Known Affected Releases

8.10(130.0)

Description (partial)

Symptom:
AP crashing randomly 
crash log:
<0>[08/26/2020 05:37:30.4580] Kernel panic - not syncing: assert:"SCB_PS(scb) || wlc_twt_scb_active(wlc->twti, scb)" failed: file "wlc_apps.c:1808" \
<4>[08/26/2020 05:37:30.6140] CPU: 1 PID: 25184 Comm: kworker/1:3 Tainted: P           O    4.1.52 #5\
<4>[08/26/2020 05:37:30.7180] Hardware name: Broadcom-v8A (DT)\
<4>[08/26/2020 05:37:30.7830] Workqueue: events wl_timer_task [wl]\
<4>[08/26/2020 05:37:30.8500] Call trace:\
<4>[08/26/2020 05:37:30.8920] [<ffffffc000088d30>] dump_backtrace+0x0/0x150\
<4>[08/26/2020 05:37:30.9690] [<ffffffc000088e94>] show_stack+0x14/0x20\
<4>[08/26/2020 05:37:31.0420] [<ffffffc000668ad8>] dump_stack+0x90/0xb0\
<4>[08/26/2020 05:37:31.1150] [<ffffffc0006663c0>] panic+0xd8/0x23c\
<4>[08/26/2020 05:37:31.1840] [<ffffffbffc683e50>] osl_assert+0x170/0x220 [hnd]\
<4>[08/26/2020 05:37:31.2660] [<ffffffbffd3207ac>] wlc_apps_psq+0x234/0x428 [wl]\
<4>[08/26/2020 05:37:31.3480] [<ffffffbffd320a50>] _wlc_apps_ps_enq+0xb0/0x260 [wl]\
<4>[08/26/2020 05:37:31.4340] [<ffffffbffd320c0c>] wlc_apps_ps_enq+0xc/0x18 [wl]\
<4>[08/26/2020 05:37:31.5160] [<ffffffbffd2ea114>] wlc_ampdu_release+0x314/0xaa0 [wl]\
<4>[08/26/2020 05:37:31.6040] [<ffffffbffd2ebefc>] _wlc_ampdu_txeval_action+0x344/0x760 [wl]\
<4>[08/26/2020 05:37:31.6990] [<ffffffbffd2ec57c>] wlc_ampdu_txeval_action+0x264/0x2d0 [wl]\
<4>[08/26/2020 05:37:31.7920] [<ffffffbffd2ec65c>] wlc_ampdu_txeval+0x74/0xa8 [wl]\
<4>[08/26/2020 05:37:31.8770] [<ffffffbffd2fc96c>] wlc_ampdu_watchdog+0x5b4/0x970 [wl]\
<4>[08/26/2020 05:37:31.9660] [<ffffffbffd2c4ee4>] wlc_watchdog+0x594/0xcd0 [wl]\
<4>[08/26/2020 05:37:32.0480] [<ffffffbffd2c5634>] wlc_watchdog_timer+0x14/0x60 [wl]\
<4>[08/26/2020 05:37:32.1350] [<ffffffbffd2ae02c>] _wl_timer+0x1dc/0x208 [wl]\
<4>[08/26/2020 05:37:32.2140] [<ffffffbffd2ae0e0>] wl_timer_task+0x20/0xc0 [wl]\
<4>[08/26/2020 05:37:32.2950] [<ffffffc0000b4614>] process_one_work+0x124/0x380\
<4>[08/26/2020 05:37:32.3760] [<ffffffc0000b4994>] worker_thread+0x124/0x4c8\
<4>[08/26/2020 05:37:32.4540] [<ffffffc0000b9f60>] kthread+0xd8/0xf0\

Conditions:
Upgrade
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.