On 5/22/23 13:51, Helge Deller wrote:
On 5/22/23 21:28, Bart Van Assche wrote:
On 5/20/23 22:43, Helge Deller wrote:
On a single-CPU parisc64 machine I face the spinlock recursion below.
Happens reproduceably directly at bootup since kernel 6.2 (and ~ 6.1.5).
Kernel is built for SMP. Same kernel binary works nicely on machines with more than
one CPU, but stops on UP machines.
Any idea or patch I could try?
How about performing one or more of the following actions?
* Translating aio_complete+0x68 into a line number.
It hangs in fs/aio.c:1128, function aio_complete(), in this call:
spin_lock_irqsave(&ctx->completion_lock, flags);
All code that I found and that obtains ctx->completion_lock disables IRQs.
It is not clear to me how this spinlock can be locked recursively? Is it
sure that the "spinlock recursion" report is correct?
Thanks,
Bart.
