Davide Pesavento wrote: > I have no experience in debugging kernel panics, but running gdb on > vmlinux seems to point to the test_bit() call in ath_isr, which > dereferences the "struct ath_common *common" pointer. > > I looked around a bit and noticed that in ath9k/pci.c:ath_pci_probe(), > the interrupt handler is registered with request_irq() before invoking > ath9k_init_device(), which takes care of allocating the ath_hw > structure. Therefore it might happen that an interrupt fires and > ath_isr() tries to use the structure before it's allocated.
Please try with a recent kernel that contains these fixes IRQ handling: commit 56bdbe0d6ac59c3eb17c2b9d715fb2e41467e354 Author: Felix Fietkau <n...@openwrt.org> Date: Sun Nov 30 21:58:30 2014 +0100 ath9k: prevent early IRQs from accessing hardware commit ef739ab6aac38b25e473f418ecfe1fb433346fa1 Author: Felix Fietkau <n...@openwrt.org> Date: Sun Nov 30 21:58:31 2014 +0100 ath9k: set ATH_OP_INVALID before disabling hardware Sujith -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
