Hi,
I'm running into an IRQ problem while removing USB adapters (e.g., when
pulling a PCMCIA card with an OHCI on it).
Specifically, this call chain
usb_hcd_pci_remove -> hcd_buffer_destroy -> dma_pool_destroy
-> pool_free_page -> free_hot_cold_page -> IRQ -> usb_hcd_irq
results in a crash. That's not the immediate problem, though.
The problem is that wrapping usb_hcd_pci_remove() in a local_irq_save/
/restore *still* allows that interrupt to happen. I suspect that something
in that call chain sometimes calls the scheduler ..?
I assume that there are nice tools which find that call for me, and save
me from plowing through a lot of kernel code ..? I've never needed one of
those before. :-/
--
Matthias Urlichs | {M:U} IT Design @ m-u-it.de | [email protected]
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
