Hi all, After merging the rdma tree, today's linux-next build (x86_64 allmodconfig) produced these warnings: In file included from include/linux/printk.h:336:0, from include/linux/kernel.h:14, from arch/x86/include/asm/percpu.h:45, from arch/x86/include/asm/current.h:6, from include/linux/mutex.h:14, from drivers/infiniband/hw/cxgb4/iw_cxgb4.h:34, from drivers/infiniband/hw/cxgb4/cq.c:33: drivers/infiniband/hw/cxgb4/cq.c: In function '__c4iw_poll_cq_one': include/linux/dynamic_debug.h:127:3: warning: 'cqe.u.gen.wrid_hi' may be used uninitialized in this function [-Wmaybe-uninitialized] __dynamic_pr_debug(&descriptor, pr_fmt(fmt), \ ^~~~~~~~~~~~~~~~~~ drivers/infiniband/hw/cxgb4/cq.c:674:16: note: 'cqe.u.gen.wrid_hi' was declared here struct t4_cqe cqe; ^~~ In file included from include/linux/printk.h:336:0, from include/linux/kernel.h:14, from arch/x86/include/asm/percpu.h:45, from arch/x86/include/asm/current.h:6, from include/linux/mutex.h:14, from drivers/infiniband/hw/cxgb4/iw_cxgb4.h:34, from drivers/infiniband/hw/cxgb4/cq.c:33: include/linux/dynamic_debug.h:127:3: warning: 'cqe.u.gen.wrid_low' may be used uninitialized in this function [-Wmaybe-uninitialized] __dynamic_pr_debug(&descriptor, pr_fmt(fmt), \ ^~~~~~~~~~~~~~~~~~ drivers/infiniband/hw/cxgb4/cq.c:674:16: note: 'cqe.u.gen.wrid_low' was declared here struct t4_cqe cqe; ^~~ In file included from include/linux/printk.h:336:0, from include/linux/kernel.h:14, from arch/x86/include/asm/percpu.h:45, from arch/x86/include/asm/current.h:6, from include/linux/mutex.h:14, from drivers/infiniband/hw/cxgb4/iw_cxgb4.h:34, from drivers/infiniband/hw/cxgb4/cq.c:33: include/linux/dynamic_debug.h:127:3: warning: 'cqe.len' may be used uninitialized in this function [-Wmaybe-uninitialized] __dynamic_pr_debug(&descriptor, pr_fmt(fmt), \ ^~~~~~~~~~~~~~~~~~ drivers/infiniband/hw/cxgb4/cq.c:674:16: note: 'cqe.len' was declared here struct t4_cqe cqe; ^~~ Introduced by commit 4ab39e2f98f2 ("RDMA/cxgb4: Make c4iw_poll_cq_one() easier to analyze") Again, I can't easily tell if these are false positives or not. -- Cheers, Stephen Rothwell
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