Re: [PATCH v2] thermal: Fix a NULL pointer dereference

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 19/10/2021 03:21, Subbaraman Narayanamurthy wrote:
> On 10/8/21 12:50 PM, Subbaraman Narayanamurthy wrote:
>> On 10/6/21 4:08 AM, Daniel Lezcano wrote:

[ ... ]

>> /sys/devices/virtual/thermal/thermal_zone87 # echo 120000 > trip_point_0_temp  
>> [  184.290964][  T211] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020
>> [  184.300896][  T211] Mem abort info:                                         
>> [  184.304486][  T211]   ESR = 0x96000006                                      
>> [  184.308348][  T211]   EC = 0x25: DABT (current EL), IL = 32 bits            
>> [  184.314531][  T211]   SET = 0, FnV = 0                                      
>> [  184.318384][  T211]   EA = 0, S1PTW = 0                                     
>> [  184.322323][  T211] Data abort info:                                        
>> [  184.325993][  T211]   ISV = 0, ISS = 0x00000006                             
>> [  184.330655][  T211]   CM = 0, WnR = 0                                       
>> [  184.334425][  T211] user pgtable: 4k pages, 39-bit VAs, pgdp=000000081a7a2000
>> [  184.341750][  T211] [0000000000000020] pgd=000000081a7a7003, p4d=000000081a7a7003, pud=000000081a7a7003, pmd=0000000000000000
>> [  184.353359][  T211] Internal error: Oops: 96000006 [#1] PREEMPT SMP         
>> [  184.359797][  T211] Dumping ftrace buffer:                                  
>> [  184.364001][  T211]    (ftrace buffer empty)
>>
>> Hope this helps.
> 
> Hi Daniel,
> Have you got a chance to look at this?

Hi Subbaraman,

Actually, I think the root problem is the thermal zone is showing up
while there is no sensor associated with it. You can read the
temperature and get a kernel warning also.

That's what should be fixed IMO.


-- 
<http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs

Follow Linaro:  <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog



[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux