This is a set of patches that I hope to get into v4.9 in some form in order to turn on the -Wmaybe-uninitialized warnings again. After talking to Linus in person at Linaro Connect about this, I spent some time on finding all the remaining warnings, and this is the resulting patch series. More details are in the description of the last patch that actually enables the warning. Let me know if there are other warnings that I missed, and whether you think these are still appropriate for v4.9 or not. A couple of patches are non-obvious, and could use some more detailed review. Arnd Arnd Bergmann (28): [v2] netfilter: nf_tables: avoid uninitialized variable warning [v2] mtd: mtk: avoid warning in mtk_ecc_encode [v2] infiniband: shut up a maybe-uninitialized warning f2fs: replace a build-time warning with runtime WARN_ON ext2: avoid bogus -Wmaybe-uninitialized warning NFSv4.1: work around -Wmaybe-uninitialized warning ceph: avoid false positive maybe-uninitialized warning staging: lustre: restore initialization of return code staging: lustre: remove broken dead code in cfs_cpt_table_create_pattern UBI: fix uninitialized access of vid_hdr pointer block: rdb: false-postive gcc-4.9 -Wmaybe-uninitialized [media] rc: print correct variable for z8f0811 [media] dib0700: fix uninitialized data on 'repeat' event iio: accel: sca3000_core: avoid potentially uninitialized variable crypto: aesni: avoid -Wmaybe-uninitialized warning pcmcia: fix return value of soc_pcmcia_regulator_set spi: fsl-espi: avoid processing uninitalized data on error drm: avoid uninitialized timestamp use in wait_vblank brcmfmac: avoid maybe-uninitialized warning in brcmf_cfg80211_start_ap net: bcm63xx: avoid referencing uninitialized variable net/hyperv: avoid uninitialized variable x86: apm: avoid uninitialized data x86: mark target address as output in 'insb' asm x86: math-emu: possible uninitialized variable use s390: pci: don't print uninitialized data for debugging nios2: fix timer initcall return value rocker: fix maybe-uninitialized warning Kbuild: bring back -Wmaybe-uninitialized warning Makefile | 10 +- arch/arc/Makefile | 4 +- arch/nios2/kernel/time.c | 1 + arch/s390/pci/pci_dma.c | 2 +- arch/x86/crypto/aesni-intel_glue.c | 121 +++++++++++++-------- arch/x86/include/asm/io.h | 4 +- arch/x86/kernel/apm_32.c | 5 +- arch/x86/math-emu/Makefile | 4 +- arch/x86/math-emu/reg_compare.c | 16 +-- drivers/block/rbd.c | 1 + drivers/gpu/drm/drm_irq.c | 4 +- drivers/infiniband/core/cma.c | 56 +++++----- drivers/media/i2c/ir-kbd-i2c.c | 2 +- drivers/media/usb/dvb-usb/dib0700_core.c | 10 +- drivers/mtd/nand/mtk_ecc.c | 19 ++-- drivers/mtd/ubi/eba.c | 2 +- drivers/net/ethernet/broadcom/bcm63xx_enet.c | 3 +- drivers/net/ethernet/rocker/rocker_ofdpa.c | 4 +- drivers/net/hyperv/netvsc_drv.c | 2 +- .../broadcom/brcm80211/brcmfmac/cfg80211.c | 2 +- drivers/pcmcia/soc_common.c | 2 +- drivers/spi/spi-fsl-espi.c | 2 +- drivers/staging/iio/accel/sca3000_core.c | 2 + .../staging/lustre/lnet/libcfs/linux/linux-cpu.c | 7 -- drivers/staging/lustre/lustre/lov/lov_pack.c | 2 + fs/ceph/super.c | 3 +- fs/ext2/inode.c | 7 +- fs/f2fs/data.c | 7 ++ fs/nfs/nfs4session.c | 10 +- net/netfilter/nft_range.c | 10 +- scripts/Makefile.ubsan | 4 + 31 files changed, 187 insertions(+), 141 deletions(-) -- Cc: x86@xxxxxxxxxx Cc: linux-media@xxxxxxxxxxxxxxx Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx> Cc: linux-s390@xxxxxxxxxxxxxxx Cc: Ilya Dryomov <idryomov@xxxxxxxxx> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx Cc: linux-mtd@xxxxxxxxxxxxxxxxxxx Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Cc: linux-crypto@xxxxxxxxxxxxxxx Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> Cc: netdev@xxxxxxxxxxxxxxx Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Cc: ceph-devel@xxxxxxxxxxxxxxx Cc: linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx Cc: linux-ext4@xxxxxxxxxxxxxxx Cc: netfilter-devel@xxxxxxxxxxxxxxx 2.9.0 -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html