On Tue, Jan 21, 2020 at 03:48:27PM +0900, Masanobu SAITOH wrote: > I suspect the location of your panic is after the following message > (because of ixgbe_allocate_msix()'s failure): > > > aprint_normal(" ETrackID %08x\n", ((uint32_t)high << 16) | low);
Exactly right: ixg0 at pci8 dev 0 function 0: Intel(R) PRO/10GbE PCI-Express Network Driver, Version - 4.0.1-k ixg0: device 82599EB ixg0: ETrackID 800001a5 ixg0: autoconfiguration error: failed to allocate MSI-X interrupt > If so, could you try the following diff? That fixed it, thanks! (with ad@'s rwlock fix and your patch all permutations work) Cheers, Patrick