From: "Guilherme G. Piccoli" <gpicc...@linux.vnet.ibm.com> Date: Sun, 28 May 2017 23:07:01 -0300
> During PCI error recovery process, specifically on eeh_err_detected() > we might have a NULL netdev struct, hence a direct dereference will > lead to a kernel oops. This was observed with latest upstream kernel > (v4.12-rc2) on Chelsio adapter T422-CR in PowerPC machines. > > This patch checks for NULL pointer and avoids the crash, both in > eeh_err_detected() and eeh_resume(). Also, we avoid to trigger > a fatal error or to try disabling interrupts on FW during PCI > error recovery, because: (a) driver might not be able to accurately > access PCI regions in this case, and (b) trigger a fatal error > _during_ the recovery steps is a mistake that could prevent the > recovery path to complete successfully. > > Reported-by: Harsha Thyagaraja <hathy...@in.ibm.com> > Signed-off-by: Guilherme G. Piccoli <gpicc...@linux.vnet.ibm.com> Applied, thanks.
