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Re: [Qemu-devel] [PATCH] memory: fix flatview_access_valid RCU read lock
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH] memory: fix flatview_access_valid RCU read lock/unlock imbalance |
Date: |
Fri, 9 Mar 2018 16:42:12 +0000 |
On 7 March 2018 at 13:29, Thomas Huth <address@hidden> wrote:
> On 07.03.2018 14:02, Paolo Bonzini wrote:
>> Fixes: 11e732a5ed46903f997985bed4c3767ca28a7eb6
>> Reported-by: Cornelia Huck <address@hidden>
>> Reported-by: luigi burdo <address@hidden>
>> Signed-off-by: Paolo Bonzini <address@hidden>
>> ---
>> exec.c | 1 -
>> 1 file changed, 1 deletion(-)
>>
>> diff --git a/exec.c b/exec.c
>> index 604f03c535..a9181e6417 100644
>> --- a/exec.c
>> +++ b/exec.c
>> @@ -3393,7 +3393,6 @@ static bool flatview_access_valid(FlatView *fv, hwaddr
>> addr, int len,
>> if (!memory_access_is_direct(mr, is_write)) {
>> l = memory_access_size(mr, l, addr);
>> if (!memory_region_access_valid(mr, xlat, l, is_write)) {
>> - rcu_read_unlock();
>> return false;
>> }
>> }
>>
>
> Thanks, this seems to fix the problem with the sam640ex and 40p machines.
>
> Tested-by: Thomas Huth <address@hidden>
Thanks, applied to master since I ran into this too.
-- PMM