On Tue, 3 Nov 1998, klein fabien wrote:
> kmalloc called nonatomically from interrupt 0007d0
>
> And then linux crash!!
You must use GFP_ATOMIC when you are calling kmalloc from an interrupt
service routine or a bottom-half handler!!! For example:
char *p = kmalloc(10, GFP_ATOMIC);
> Am i not allowed to kmalloc buffer inside the hard_start_tx function??
If I recall correctly, that function may be called from bottom-half processing
code. Bottom half processing may be initiated during interrupt processing, as
well as in the scheduler or at system call return time. Therefore, code run
from bottom-half callbacks must be treated with the same care as interrupt
service routines. If such code needs dynamic memory, use atomic requests.
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