Re: ath9k: BUG kmalloc-8192: Poison overwritten

From: Justin P. Mattock
Date: Fri May 14 2010 - 13:25:08 EST

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On 05/14/10 09:53, Luis R. Rodriguez wrote:

On Fri, May 14, 2010 at 08:41:13AM -0700, Justin P. Mattock wrote:
On 05/13/10 23:38, Bruno Randolf wrote:
On Friday 14 May 2010 15:31:26 Justin P. Mattock wrote:
On 05/13/10 23:20, Bruno Randolf wrote:
On Friday 14 May 2010 15:16:22 Luis R. Rodriguez wrote:
On Thu, May 13, 2010 at 9:44 PM, Justin P. Mattock

<justinmattock@xxxxxxxxx> wrote:
On 05/13/10 21:01, Luis R. Rodriguez wrote:
On Thu, May 13, 2010 at 7:14 PM, Justin P. Mattock

<justinmattock@xxxxxxxxx> wrote:
what I can try, is(not at the convention, on eth0
at the moment), but when I get back to the convention
center place I can try your patch as well as the
modprobe option, to see if I can get any signs of
a recreation(if so I'll bisect there).

The debug info I just need upon load of the module, I don't need you
to run the debug stuff to try to reproduce. The debug print upon load
will tell us the rxbuf size and cache line size.

Luis

o.k. it's not pretty due
to loads of avc's for SELinux:
(I run a rootless system).

[ 84.172649] ath9k: Driver unloaded
[ 100.675300] audit_printk_skb: 6 callbacks suppressed
[ 100.675306] type=1400 audit(1273811633.675:20): avc: denied {
search } for pid=2168 comm="modprobe" name="modules" dev=sda3
ino=2500 scontext=name:staff_r:staff_sudo_t:s0
tcontext=system_u:object_r:modules_object_t:s0 tclass=dir
[ 100.675408] type=1400 audit(1273811633.675:20): avc: denied {
search } for pid=2168 comm="modprobe"
name="2.6.34-rc7-00057-gcdfda35" dev=sda3 ino=524392
scontext=name:staff_r:staff_sudo_t:s0
tcontext=name:object_r:modules_object_t:s0 tclass=dir
[ 100.675552] type=1400 audit(1273811633.675:20): avc: denied { read
} for pid=2168 comm="modprobe" name="modules.dep.bin" dev=sda3
ino=525251 scontext=name:staff_r:staff_sudo_t:s0
tcontext=name:object_r:modules_object_t:s0 tclass=file
[ 100.675598] type=1400 audit(1273811633.675:20): avc: denied { open
} for pid=2168 comm="modprobe" name="modules.dep.bin" dev=sda3
ino=525251 scontext=name:staff_r:staff_sudo_t:s0
tcontext=name:object_r:modules_object_t:s0 tclass=file
[ 100.675748] type=1300 audit(1273811633.675:20): arch=c000003e
syscall=2 success=yes exit=3 a0=60d140 a1=0 a2=1b6 a3=0 items=0
ppid=2080 pid=2168 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0
sgid=0 fsgid=0 tty=pts0 ses=1 comm="modprobe" exe="/sbin/modprobe"
subj=name:staff_r:staff_sudo_t:s0 key=(null)
[ 100.675902] type=1400 audit(1273811633.675:21): avc: denied {
getattr } for pid=2168 comm="modprobe"
path="/lib/modules/2.6.34-rc7-00057-gcdfda35/modules.dep.bin" dev=sda3
ino=525251 scontext=name:staff_r:staff_sudo_t:s0
tcontext=name:object_r:modules_object_t:s0 tclass=file
[ 100.676052] type=1300 audit(1273811633.675:21): arch=c000003e
syscall=5 success=yes exit=0 a0=3 a1=7fffd2d1dd70 a2=7fffd2d1dd70 a3=0
items=0 ppid=2080 pid=2168 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0
egid=0 sgid=0 fsgid=0 tty=pts0 ses=1 comm="modprobe"
exe="/sbin/modprobe"
subj=name:staff_r:staff_sudo_t:s0 key=(null)
[ 100.698392] ath9k 0000:03:00.0: PCI INT A -> GSI 17 (level, low) ->
IRQ 17
[ 100.698409] ath9k 0000:03:00.0: setting latency timer to 64
[ 100.828787] ath: EEPROM regdomain: 0x64
[ 100.828790] ath: EEPROM indicates we should expect a direct regpair
map [ 100.828793] ath: Country alpha2 being used: 00
[ 100.828795] ath: Regpair used: 0x64
[ 100.848609] type=1400 audit(1273811633.678:22): avc: denied {
search } for pid=2168 comm="modprobe" name="ieee80211" dev=debugfs
ino=18 scontext=name:staff_r:staff_sudo_t:s0
tcontext=system_u:object_r:debugfs_t:s0 tclass=dir
[ 100.848788] phy1: Selected rate control algorithm
'ath9k_rate_control' [ 100.850035] Registered led device:
ath9k-phy1::radio
[ 100.850488] Registered led device: ath9k-phy1::assoc
[ 100.851227] Registered led device: ath9k-phy1::tx
[ 100.851633] Registered led device: ath9k-phy1::rx
[ 100.851640] phy1: Atheros AR5418 MAC/BB Rev:2 AR5133 RF Rev:81
mem=0xffffc900005a0000, irq=17
[ 100.852240] type=1300 audit(1273811633.678:22): arch=c000003e
syscall=175 success=yes exit=0 a0=7f1e9d6ab010 a1=19580 a2=60d920 a3=0
items=0 ppid=2080 pid=2168 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0
egid=0 sgid=0 fsgid=0 tty=pts0 ses=1 comm="modprobe"
exe="/sbin/modprobe"
subj=name:staff_r:staff_sudo_t:s0 key=(null)

but there you go dmesg of the debug info for you

Justin, did you forget to use the debug parameter on modprobe ath9k?

modprobe ath9k debug=0x0000020

I do not see the output I expected.

i think you have to do at least "ifconfig wlan0 up" to see it - (at least
for ath5k).

bruno

didn't think todo so, I'll redu
again and see. BTW: the connection
over here is dodgy(hotel) should I at-least
find a stable access point? i.g. convetion
center seemed semi somewhat there

no that does not matter. just ifconfig up is enough. it's just initialization,
you don't need a connection for that.

bruno

Justin P. Mattock
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here you go:
(hopefully I did this correct)

[ 84.172542] ath9k 0000:03:00.0: PCI INT A disabled
[ 84.172649] ath9k: Driver unloaded
[ 100.675300] audit_printk_skb: 6 callbacks suppressed
[ 100.675306] type=1400 audit(1273811633.675:20): avc: denied {
search } for pid=2168 comm="modprobe" name="modules" dev=sda3 ino=2500
xt=name:staff_r:staff_sudo_t:s0
tcontext=system_u:object_r:modules_object_t:s0 tclass=dir
[ 100.675408] type=1400 audit(1273811633.675:20): avc: denied {
search } for pid=2168 comm="modprobe" name="2.6.34-rc7-00057-gcdfda35"
dev=sda3 ino=524392 scontext=name:staff_r:staff_sudo_t:s0
tcontext=name:object_r:modules_object_t:s0 tclass=dir
[ 100.675552] type=1400 audit(1273811633.675:20): avc: denied { read
} for pid=2168 comm="modprobe" name="modules.dep.bin" dev=sda3
ino=525251 scontext=name:staff_r:staff_sudo_t:s0
tcontext=name:object_r:modules_object_t:s0 tclass=file
[ 100.675598] type=1400 audit(1273811633.675:20): avc: denied { open
} for pid=2168 comm="modprobe" name="modules.dep.bin" dev=sda3
ino=525251 scontext=name:staff_r:staff_sudo_t:s0
tcontext=name:object_r:modules_object_t:s0 tclass=file
[ 100.675748] type=1300 audit(1273811633.675:20): arch=c000003e
syscall=2 success=yes exit=3 a0=60d140 a1=0 a2=1b6 a3=0 items=0
ppid=2080 pid=2168 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0
sgid=0 fsgid=0 tty=pts0 ses=1 comm="modprobe" exe="/sbin/modprobe"
subj=name:staff_r:staff_sudo_t:s0 key=(null)
[ 100.675902] type=1400 audit(1273811633.675:21): avc: denied {
getattr } for pid=2168 comm="modprobe"
path="/lib/modules/2.6.34-rc7-00057-gcdfda35/modules.dep.bin" dev=sda3
ino=525251 scontext=name:staff_r:staff_sudo_t:s0
tcontext=name:object_r:modules_object_t:s0 tclass=file
[ 100.676052] type=1300 audit(1273811633.675:21): arch=c000003e
syscall=5 success=yes exit=0 a0=3 a1=7fffd2d1dd70 a2=7fffd2d1dd70 a3=0
items=0 ppid=2080 pid=2168 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0
egid=0 sgid=0 fsgid=0 tty=pts0 ses=1 comm="modprobe"
exe="/sbin/modprobe" subj=name:staff_r:staff_sudo_t:s0 key=(null)
[ 100.698392] ath9k 0000:03:00.0: PCI INT A -> GSI 17 (level, low) ->
IRQ 17
[ 100.698409] ath9k 0000:03:00.0: setting latency timer to 64
[ 100.828787] ath: EEPROM regdomain: 0x64
[ 100.828790] ath: EEPROM indicates we should expect a direct regpair map
[ 100.828793] ath: Country alpha2 being used: 00
[ 100.828795] ath: Regpair used: 0x64

[ 100.848609] type=1400 audit(1273811633.678:22): avc: denied {
search } for pid=2168 comm="modprobe" name="ieee80211" dev=debugfs
ino=18 scontext=name:staff_r:staff_sudo_t:s0
tcontext=system_u:object_r:debugfs_t:s0 tclass=dir
[ 100.848788] phy1: Selected rate control algorithm 'ath9k_rate_control'
[ 100.850035] Registered led device: ath9k-phy1::radio
[ 100.850488] Registered led device: ath9k-phy1::assoc
[ 100.851227] Registered led device: ath9k-phy1::tx
[ 100.851633] Registered led device: ath9k-phy1::rx
[ 100.851640] phy1: Atheros AR5418 MAC/BB Rev:2 AR5133 RF Rev:81
mem=0xffffc900005a0000, irq=17
[ 100.852240] type=1300 audit(1273811633.678:22): arch=c000003e
syscall=175 success=yes exit=0 a0=7f1e9d6ab010 a1=19580 a2=60d920 a3=0
items=0 ppid=2080 pid=2168 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0
egid=0 sgid=0 fsgid=0 tty=pts0 ses=1 comm="modprobe"
exe="/sbin/modprobe" subj=name:staff_r:staff_sudo_t:s0 key=(null)

let me know if you need more info.. I'll be off the grid in
a few, then probably wont be back on till a while
(since I aint got's no 99 big ones for intranet!!)

Your output still did not have the stuff I was looking for, just do:

dmesg | grep cachelsz

If nothing comes up it doesn't have the output I was looking for yet.

Luis

here you go:
(I was grabbing the info
after rmmod and modprobe)

[ 7.034242] ATH9K: cachelsz: 256
[ 69.175348] ATH9K: cachelsz: 256

Justin P. Mattock
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Next message: Al Viro: "Re: [PATCH -V7 3/9] vfs: Add name to file handle conversion support"
Previous message: Patrick McHardy: "Re: [PATCH -next] netfilter: xt_TEE depends on NF_CONNTRACK"
In reply to: Luis R. Rodriguez: "Re: ath9k: BUG kmalloc-8192: Poison overwritten"
Next in thread: Luis R. Rodriguez: "Re: ath9k: BUG kmalloc-8192: Poison overwritten"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]