Bart, > Avoid that scsi_show_rq() triggers a NULL pointer dereference if > called after sd_uninit_command(). Swap the NULL pointer assignment > and the mempool_free() call in sd_uninit_command() to make it less > likely that scsi_show_rq() triggers a use-after-free. Note: even > with these changes scsi_show_rq() can trigger a use-after-free but > that's a lesser evil than e.g. suppressing debug information for > T10-PI commands completely. This patch fixes the following oops: Applied to 4.15/scsi-fixes. Thanks, Bart. -- Martin K. Petersen Oracle Linux Engineering