Bug 170889 - [ath] ath driver uses some uninitilized memory
Summary: [ath] ath driver uses some uninitilized memory
Status: Open
Alias: None
Product: Base System
Classification: Unclassified
Component: wireless (show other bugs)
Version: 10.0-CURRENT
Hardware: Any Any
: Normal Affects Only Me
Assignee: freebsd-wireless (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-08-22 21:30 UTC by Lev A. Serebryakov
Modified: 2025-02-07 02:34 UTC (History)
1 user (show)

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Description Lev A. Serebryakov freebsd_committer freebsd_triage 2012-08-22 21:30:08 UTC 
 With these debug flags ath driver prints out some buffers, which looks like uninitialized memory.
 Here is snapshot from boot log:
 
FreeBSD 10.0-CURRENT #2 r239564M: Wed Aug 22 22:12:33 MSK 2012
    root@vmware-c-32.home.serebryakov.spb.ru:/usr/obj/nanobsd.gateway-net5501/data/src/sys/NET5501 i386
> SKIPPED
ath0: <Atheros 9220> mem 0xa0060000-0xa006ffff irq 15 at device 17.0 on pci0
[ath] enabling AN_TOP2_FIXUP
[ath]: default pwr offset: -5 dBm != EEPROM pwr offset: 0 dBm; curves will be adjusted.
ath0: DMA setup: legacy
ath0: [HT] enabling HT modes
ath0: [HT] 2 RX streams; 2 TX streams
ath0: AR9220 mac 128.2 RF5133 phy 13.0
ath0: 2GHz radio: 0x0000; 5GHz radio: 0x00c0
> SKIPPED
> wlan0 created
wlan0: Ethernet address: 00:0c:42:64:69:92
ath0: ath_init: if_flags 0x8803
ath0: ath_stop_locked: invalid 0 if_flags 0x8803
ath0: ath_init: imask=0xe0000071
ath0: ath_txq_update: Q1 qflags 0xf aifs 3 cwmin 15 cwmax 63 burstTime 0
ath0: ath_txq_update: Q0 qflags 0xf aifs 7 cwmin 15 cwmax 1023 burstTime 0
ath0: ath_txq_update: Q2 qflags 0xf aifs 1 cwmin 7 cwmax 15 burstTime 3008
ath0: ath_txq_update: Q3 qflags 0xf aifs 1 cwmin 3 cwmax 7 burstTime 1504
ath0: ath_chan_set: 1 (2412 MHz, flags 0x10480)
ath0: ath_legacy_stoprecv: rx queue 0x2e7b000, link 0xd5e872a0
ath0: ath_stoptxdma: tx queue [9] 0, link 0
ath0: ath_tx_stopdma: tx queue [0] 0, link 0
ath0: ath_tx_stopdma: tx queue [1] 0, link 0
ath0: ath_tx_stopdma: tx queue [2] 0, link 0
ath0: ath_tx_stopdma: tx queue [3] 0, link 0
ath0: ath_tx_stopdma: tx queue [8] 0, link 0
ath0: ath_stoptxdma: tx queue [9] 0, link 0
ath0: ath_tx_stopdma: tx queue [0] 0, link 0
ath0: ath_tx_stopdma: tx queue [1] 0, link 0
ath0: ath_tx_stopdma: tx queue [2] 0, link 0
ath0: ath_tx_stopdma: tx queue [3] 0, link 0
ath0: ath_tx_stopdma: tx queue [8] 0, link 0
ath0: ath_txq_update: Q1 qflags 0xf aifs 2 cwmin 7 cwmax 1023 burstTime 2048
ath0: ath_txq_update: Q0 qflags 0xf aifs 7 cwmin 15 cwmax 1023 burstTime 0
ath0: ath_txq_update: Q2 qflags 0xf aifs 1 cwmin 7 cwmax 15 burstTime 3008
ath0: ath_txq_update: Q3 qflags 0xf aifs 1 cwmin 3 cwmax 7 burstTime 1504
ath0: ath_setslottime: chan 2412 MHz flags 0x10480 short slot, 9 usec
Starting hostapd.
Configuration file: /etc/hostapd.conf
ath0: ath_stop_locked: invalid 0 if_flags 0x8802
ath0: ath_stoptxdma: tx queue [9] 0x2e7a000, link 0
ath0: ath_tx_stopdma: tx queue [0] 0, link 0
ath0: ath_tx_stopdma: tx queue [1] 0x2dfe480, link 0
ath0: ath_tx_stopdma: tx queue [2] 0, link 0
ath0: ath_tx_stopdma: tx queue [3] 0, link 0
ath0: ath_tx_stopdma: tx queue [8] 0, link 0
ath0: ath_legacy_stoprecv: rx queue 0x2e83f60, link 0xd5e83e40
R[ 0] (DS.V:0xd5e83ea0 DS.P:0x2e83ea0) L:02e83f00 D:187bd800 *
      aa55aa55 00000800 1b801b1f 00000125
        00e632e1 00000100 21808080 80808080 80808080 80808080 00000003
R[ 1] (DS.V:0xd5e83f00 DS.P:0x2e83f00) L:02e83f60 D:187bf000 *
      aa55aa55 00000800 1b801406 000000ee
        00e6b613 00000100 14808080 80808080 80808080 80808080 00000003
Using interface wlan0 with hwaddr 00:0c:42:64:69:92 and ssid 'home.serebryakov.spb.ru'
ath0: ath_init: if_flags 0x8803
ath0: ath_stop_locked: invalid 0 if_flags 0x8803
ath0: ath_init: imask=0xe0000071
ath0: ath_txq_update: Q1 qflags 0xf aifs 3 cwmin 15 cwmax 63 burstTime 0
ath0: ath_txq_update: Q0 qflags 0xf aifs 7 cwmin 15 cwmax 1023 burstTime 0
ath0: ath_txq_update: Q2 qflags 0xf aifs 1 cwmin 7 cwmax 15 burstTime 3008
ath0: ath_txq_update: Q3 qflags 0xf aifs 1 cwmin 3 cwmax 7 burstTime 1504
ath0: ath_chan_set: 1 (2412 MHz, flags 0x10480)
ath0: ath_txq_update: Q1 qflags 0xf aifs 2 cwmin 7 cwmax 1023 burstTime 2048
ath0: ath_txq_update: Q0 qflags 0xf aifs 7 cwmin 15 cwmax 1023 burstTime 0
ath0: ath_txq_update: Q2 qflags 0xf aifs 1 cwmin 7 cwmax 15 burstTime 3008
ath0: ath_txq_update: Q3 qflags 0xf aifs 1 cwmin 3 cwmax 7 burstTime 1504
ath0: ath_setslottime: chan 2412 MHz flags 0x10480 short slot, 9 usec

How-To-Repeat: 
Build driver, add debugging :)
Comment 1 Lev A. Serebryakov freebsd_committer freebsd_triage 2012-08-22 21:31:34 UTC 
Responsible Changed
From-To: freebsd-bugs->wireless

To the owner
Comment 2 Mark Linimon freebsd_committer freebsd_triage 2012-08-22 22:30:15 UTC 
Responsible Changed
From-To: wireless->freebsd-wireless

Canonicalize assignment.
Comment 3 Eitan Adler freebsd_committer freebsd_triage 2018-05-28 19:43:33 UTC 
batch change:

For bugs that match the following
-  Status Is In progress 
AND
- Untouched since 2018-01-01.
AND
- Affects Base System OR Documentation

DO:

Reset to open status.


Note:
I did a quick pass but if you are getting this email it might be worthwhile to double check to see if this bug ought to be closed.
Comment 4 Mark Linimon freebsd_committer freebsd_triage 2025-02-07 02:34:41 UTC 
^Triage: is this still a problem on supported versions of FreeBSD?