Re: ath9k: BUG kmalloc-8192: Poison overwritten

[Luis R. Rodriguez]

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
> >> --
> >> To unsubscribe from this list: send the line "unsubscribe linux-wireless"
> >> in the body of a message to majordomo@xxxxxxxxxxxxxxx
> >> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
> 
> 
> 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
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