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stable-rc/linux-4.9.y build: 192 builds: 4 failed, 188 passed, 2 errors, 104 warnings (v4.9.138-60-g70b13958eeae)

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stable-rc/linux-4.9.y build: 192 builds: 4 failed, 188 passed, 2 errors, 104 warnings (v4.9.138-60-g70b13958eeae) Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.9.y/kernel/v4.9.138-60-… Tree: stable-rc Branch: linux-4.9.y Git Describe: v4.9.138-60-g70b13958eeae Git Commit: 70b13958eeae24843ed944e4f3d4a25a0cdec0dc Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Built: 5 unique architectures Build Failures Detected: arc: gcc version 7.1.1 20170710 (ARCv2 ISA Linux uClibc toolchain 2017.09) allnoconfig: FAIL tinyconfig: FAIL zebu_hs_defconfig: FAIL zebu_hs_smp_defconfig: FAIL Errors and Warnings Detected: arc: gcc version 7.1.1 20170710 (ARCv2 ISA Linux uClibc toolchain 2017.09) allnoconfig: 1 error, 5 warnings axs103_defconfig: 15 warnings axs103_smp_defconfig: 16 warnings nsim_hs_smp_defconfig: 6 warnings nsimosci_hs_defconfig: 5 warnings nsimosci_hs_smp_defconfig: 6 warnings tinyconfig: 1 error, 6 warnings vdk_hs38_defconfig: 16 warnings vdk_hs38_smp_defconfig: 17 warnings zebu_hs_defconfig: 5 warnings zebu_hs_smp_defconfig: 6 warnings mips: gcc version 6.3.0 (GCC) decstation_defconfig: 1 warning Errors summary: 2 arc-linux-ld: error: vmlinux.o: unable to merge ISA extension attributes code-density. Warnings summary: 36 fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] 11 kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] 11 include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast 9 net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] 9 net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] 9 include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] 7 warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) 5 lib/cpumask.c:211:1: warning: control reaches end of non-void function [-Wreturn-type] 4 block/cfq-iosched.c:3840:1: warning: control reaches end of non-void function [-Wreturn-type] 2 arch/arc/kernel/unwind.c:188:14: warning: 'unw_hdr_alloc' defined but not used [-Wunused-function] 1 drivers/net/ethernet/amd/declance.c:1231:2: warning: 'desc' may be used uninitialized in this function [-Wmaybe-uninitialized] ================================================================================ Detailed per-defconfig build reports: -------------------------------------------------------------------------------- acs5k_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- acs5k_tiny_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (x86) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arm64) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arc) — FAIL, 1 error, 5 warnings, 0 section mismatches Errors: arc-linux-ld: error: vmlinux.o: unable to merge ISA extension attributes code-density. Warnings: warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast -------------------------------------------------------------------------------- am200epdkit_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ar7_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- aspeed_g4_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- aspeed_g5_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- assabet_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- at91_dt_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ath25_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ath79_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- axm55xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- axs103_defconfig (arc) — PASS, 0 errors, 15 warnings, 0 section mismatches Warnings: include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] block/cfq-iosched.c:3840:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- axs103_smp_defconfig (arc) — PASS, 0 errors, 16 warnings, 0 section mismatches Warnings: include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] block/cfq-iosched.c:3840:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] lib/cpumask.c:211:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- badge4_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm2835_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm47xx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm63xx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bigsur_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bmips_be_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bmips_stb_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- capcella_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cavium_octeon_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cerfcube_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ci20_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- clps711x_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cm_x2xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cm_x300_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cns3420vb_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cobalt_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- colibri_pxa270_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- colibri_pxa300_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- collie_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- corgi_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- davinci_all_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- db1xxx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- decstation_defconfig (mips) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/net/ethernet/amd/declance.c:1231:2: warning: 'desc' may be used uninitialized in this function [-Wmaybe-uninitialized] -------------------------------------------------------------------------------- defconfig (arm64) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- dove_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- e55_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ebsa110_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- efm32_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- em_x270_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ep93xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- eseries_pxa_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- exynos_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ezx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- footbridge_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- fuloong2e_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- gpr_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- h3600_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- h5000_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- hackkit_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- hisi_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- i386_defconfig (x86) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imote2_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v4_v5_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v6_v7_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- integrator_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop13xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop32x_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop33x_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip22_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip27_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip28_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip32_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ixp4xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jazz_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jmr3927_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jornada720_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- keystone_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ks8695_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lart_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lasat_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lemote2f_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- loongson1b_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- loongson1c_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lpc18xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lpc32xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lpd270_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lubbock_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- magician_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mainstone_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_kvm_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_kvm_guest_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_qemu_32r6_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltaaprp_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltasmvp_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltasmvp_eva_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltaup_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltaup_xpa_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- markeins_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mini2440_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mips_paravirt_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mmp2_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- moxart_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mpc30x_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mps2_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- msp71xx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mtx1_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v4t_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v5_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v7_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mv78xx0_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mvebu_v5_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mvebu_v7_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mxs_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- neponset_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- netwinder_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- netx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nhk8815_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nlm_xlp_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nlm_xlr_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nsim_hs_smp_defconfig (arc) — PASS, 0 errors, 6 warnings, 0 section mismatches Warnings: kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast lib/cpumask.c:211:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- nsimosci_hs_defconfig (arc) — PASS, 0 errors, 5 warnings, 0 section mismatches Warnings: include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- nsimosci_hs_smp_defconfig (arc) — PASS, 0 errors, 6 warnings, 0 section mismatches Warnings: include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] lib/cpumask.c:211:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- nuc910_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nuc950_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nuc960_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap1_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap2plus_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- orion5x_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- palmz72_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pcm027_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pic32mzda_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pistachio_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pleb_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pnx8335_stb225_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- prima2_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa168_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa255-idp_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa3xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa910_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- qcom_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- qi_lb60_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- raumfeld_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rb532_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rbtx49xx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- realview_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rm200_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rpc_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rt305x_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s3c2410_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s3c6400_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s5pv210_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sama5_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sb1250_swarm_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- shannon_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- shmobile_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- simpad_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- socfpga_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear13xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear3xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear6xx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spitz_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- stm32_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sunxi_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0219_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0226_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0287_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tct_hammer_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tegra_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (x86) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (arm64) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (arc) — FAIL, 1 error, 6 warnings, 0 section mismatches Errors: arc-linux-ld: error: vmlinux.o: unable to merge ISA extension attributes code-density. Warnings: warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- tinyconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- trizeps4_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- u300_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- u8500_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vdk_hs38_defconfig (arc) — PASS, 0 errors, 16 warnings, 0 section mismatches Warnings: arch/arc/kernel/unwind.c:188:14: warning: 'unw_hdr_alloc' defined but not used [-Wunused-function] include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] block/cfq-iosched.c:3840:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- vdk_hs38_smp_defconfig (arc) — PASS, 0 errors, 17 warnings, 0 section mismatches Warnings: arch/arc/kernel/unwind.c:188:14: warning: 'unw_hdr_alloc' defined but not used [-Wunused-function] include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] block/cfq-iosched.c:3840:1: warning: control reaches end of non-void function [-Wreturn-type] fs/ext4/ext4_jbd2.h:430:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] lib/cpumask.c:211:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- versatile_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vexpress_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vf610m4_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- viper_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vt8500_v6_v7_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- workpad_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig (x86) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- xcep_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- xilfpga_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- xway_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- zebu_hs_defconfig (arc) — FAIL, 0 errors, 5 warnings, 0 section mismatches Warnings: include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- zebu_hs_smp_defconfig (arc) — FAIL, 0 errors, 6 warnings, 0 section mismatches Warnings: include/linux/kernel.h:740:16: warning: comparison of distinct pointer types lacks a cast kernel/sched/core.c:3294:1: warning: control reaches end of non-void function [-Wreturn-type] lib/cpumask.c:211:1: warning: control reaches end of non-void function [-Wreturn-type] net/core/ethtool.c:300:1: warning: control reaches end of non-void function [-Wreturn-type] net/ipv4/tcp_input.c:4325:49: warning: array subscript is above array bounds [-Warray-bounds] include/linux/sunrpc/svc_xprt.h:178:1: warning: control reaches end of non-void function [-Wreturn-type] -------------------------------------------------------------------------------- zeus_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- zx_defconfig (arm) — PASS, 0 errors, 0 warnings, 0 section mismatches --- For more info write to <info(a)kernelci.org>

6 years, 10 months

1
0
0 0

[PATCH] iser: set sector for ambiguous mr status errors

by Sagi Grimberg

If for some reason we failed to query the mr status, we need to make sure to provide sufficient information for an ambiguous error (guard error on sector 0). Fixes: 0a7a08ad6f5f ("IB/iser: Implement check_protection") Cc: <stable(a)vger.kernel.org> Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com> Signed-off-by: Sagi Grimberg <sagi(a)grimberg.me> --- drivers/infiniband/ulp/iser/iser_verbs.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c index 946b623ba5eb..ab137bafa8a8 100644 --- a/drivers/infiniband/ulp/iser/iser_verbs.c +++ b/drivers/infiniband/ulp/iser/iser_verbs.c @@ -1124,7 +1124,9 @@ u8 iser_check_task_pi_status(struct iscsi_iser_task *iser_task, IB_MR_CHECK_SIG_STATUS, &mr_status); if (ret) { pr_err("ib_check_mr_status failed, ret %d\n", ret); - goto err; + /* Not alot we can do, return ambiguous guard error */ + *sector = 0; + return 0x1; } if (mr_status.fail_status & IB_MR_CHECK_SIG_STATUS) { @@ -1152,9 +1154,6 @@ u8 iser_check_task_pi_status(struct iscsi_iser_task *iser_task, } return 0; -err: - /* Not alot we can do here, return ambiguous guard error */ - return 0x1; } void iser_err_comp(struct ib_wc *wc, const char *type) -- 2.17.1

6 years, 10 months

2
1
0 0

[Patch v7 00/18] Provide task property based options to enable Spectre v2 userspace-userspace protection

by Tim Chen

My apology that the v6 patches are missing the first two patch in the series. Resending the patch series as v7. Fix in this version bugs causing build problems for UP configuration. Also merged in Jiri's change to extend STIBP for SECCOMP processes and renaming TIF_STIBP to TIF_SPEC_INDIR_BRANCH. I've updated the boot options spectre_v2_app2app to on, off, auto, prctl and seccomp. This aligns with the options for other speculation related mitigations. I tried to incorporate sched_smt_present to detect when we have all SMT going offline and we can disable the SMT path that Peter suggested. this is an optimization that can be easily left out of the patch series. I've put these two patches at the end and they can be considered separately. I've dropped the TIF flags re-organization patches as they are orthogonal to this patch series. To do: Create a dedicated document on the mitigation options for Spectre V2. Since Jiri's patchset to always turn on STIBP has big performance impact, I think that it should be reverted from 4.20 and stable kernels for now, till this patchset to mitigate its performance impact can be merged with it. Thanks. Tim Patch 1 to 3 are clean up patches. Patch 4 and 5 disable STIBP for enhacned IBRS. Patch 6 to 9 reorganize and clean up the code without affecting functionality for easier modification later. Patch 10 introduces the STIBP flag on a task to dynamically enable STIBP for that task. Patch 11 introduces different modes to protect a task against Spectre v2 user space attack. Patch 12 adds prctl interface to turn on Spectre v2 user mode defenses on a task. Patch 13 Put IBPB usage under the mode chosen for app2app mitigation. Patch 14 Add STIBP protection for SECCOMP tasks. Patch 15-16 add Spectre v2 defenses for non-dumpable tasks. Patch 15-16 reorganizes the TIF flags, and can be dropped without affecting this series Patch 17-18 When there are no paired SMT left, disable SMT specific code Changes: v6: 1. Fix bugs for UP build configuration. 2. Add protection for SECCOMP tasks. 3. Rename TIF_STIBP to TIF_SPEC_INDIR_BRANCH. 4. Update boot options to align with other speculation mitigations. 5. Separate out IBPB change that makes it depend on TIF_SPEC_INDIR_BRANCH. 6. Move some checks for SPEC_CTRL updates to spec_ctrl_update_msr to avoid unnecesseary MSR writes. 7. Drop TIF reorg patches. 8. Incorporate optimization to disable SMT code paths when no paired SMT is present. v5: 1. Drop patch to extend TIF_STIBP changes to all related threads on a task's dumpabibility change. 2. Drop patch to replace sched_smt_present with cpu_smt_enabled. 3. Drop export of cpu_smt_control in kernel/cpu.c and replace external usages of cpu_smt_control with cpu_smt_enabled. 4. Rebase patch series on 4.20-rc2. v4: 1. Extend STIBP update to all threads of a process changing it dumpability. 2. Add logic to update SPEC_CTRL MSR on a remote CPU when TIF flags affecting speculation changes for task running on the remote CPU. 3. Regroup x86 TIF_* flags according to their functions. 4. Various code clean up. v3: 1. Add logic to skip STIBP when Enhanced IBRS is used. 2. Break up v2 patches into smaller logical patches. 3. Fix bug in arch_set_dumpable that did not update SPEC_CTRL MSR right away when according to task's STIBP flag clearing which caused SITBP to be left on. 4. Various code clean up. v2: 1. Extend per process STIBP to AMD cpus 2. Add prctl option to control per process indirect branch speculation 3. Bug fixes and cleanups Jiri's patchset to harden Spectre v2 user space mitigation makes IBPB and STIBP in use for Spectre v2 mitigation on all processes. IBPB will be issued for switching to an application that's not ptraceable by the previous application and STIBP will be always turned on. However, leaving STIBP on all the time is expensive for certain applications that have frequent indirect branches. One such application is perlbench in the SpecInt Rate 2006 test suite which shows a 21% reduction in throughput. There're also reports of drop in performance on Python and PHP benchmarks: https://www.phoronix.com/scan.php?page=article&item=linux-420-bisect&num=2 Other applications like bzip2 with minimal indirct branches have only a 0.7% reduction in throughput. IBPB will also impose overhead during context switches. Users may not wish to incur performance overhead from IBPB and STIBP for general non security sensitive processes and use these mitigations only for security sensitive processes. This patchset provides a process property based lite protection mode. In this mode, IBPB and STIBP mitigation are applied only to security sensitive non-dumpable processes and processes that users want to protect by having indirect branch speculation disabled via PRCTL. So the overhead from IBPB and STIBP are avoided for low security processes that don't require extra protection. Jiri Kosina (1): x86/speculation: Add 'seccomp' Spectre v2 app to app protection mode Peter Zijlstra (1): sched/smt: Make sched_smt_present track topology Tim Chen (16): x86/speculation: Clean up spectre_v2_parse_cmdline() x86/speculation: Remove unnecessary ret variable in cpu_show_common() x86/speculation: Reorganize cpu_show_common() x86/speculation: Add X86_FEATURE_USE_IBRS_ENHANCED x86/speculation: Disable STIBP when enhanced IBRS is in use x86/speculation: Rename SSBD update functions x86/speculation: Reorganize speculation control MSRs update smt: Create cpu_smt_enabled static key for SMT specific code x86/smt: Convert cpu_smt_control check to cpu_smt_enabled static key x86/speculation: Turn on or off STIBP according to a task's TIF_STIBP x86/speculation: Add Spectre v2 app to app protection modes x86/speculation: Create PRCTL interface to restrict indirect branch speculation x86/speculation: Enable IBPB for tasks with TIF_SPEC_BRANCH_SPECULATION security: Update speculation restriction of a process when modifying its dumpability x86/speculation: Use STIBP to restrict speculation on non-dumpable task x86/smt: Allow disabling of SMT when last SMT is offlined Documentation/admin-guide/kernel-parameters.txt | 34 +++ Documentation/userspace-api/spec_ctrl.rst | 9 + arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/include/asm/msr-index.h | 6 +- arch/x86/include/asm/nospec-branch.h | 10 + arch/x86/include/asm/spec-ctrl.h | 18 +- arch/x86/include/asm/thread_info.h | 5 +- arch/x86/kernel/cpu/bugs.c | 336 +++++++++++++++++++++--- arch/x86/kernel/process.c | 58 +++- arch/x86/kvm/vmx.c | 2 +- arch/x86/mm/tlb.c | 23 +- fs/exec.c | 3 + include/linux/cpu.h | 31 ++- include/linux/sched.h | 9 + include/uapi/linux/prctl.h | 1 + kernel/cpu.c | 28 +- kernel/cred.c | 5 +- kernel/sched/core.c | 19 +- kernel/sched/sched.h | 2 - kernel/sys.c | 7 + tools/include/uapi/linux/prctl.h | 1 + 21 files changed, 526 insertions(+), 82 deletions(-) -- 2.9.4

6 years, 10 months

2
24
0 0

[PATCH] x86/mm: Drop usage of __flush_tlb_all() in kernel_physical_mapping_init()

by Dan Williams

Commit f77084d96355 "x86/mm/pat: Disable preemption around __flush_tlb_all()" addressed a case where __flush_tlb_all() is called without preemption being disabled. It also left a warning to catch other cases where preemption is not disabled. That warning triggers for the memory hotplug path which is also used for persistent memory enabling: WARNING: CPU: 35 PID: 911 at ./arch/x86/include/asm/tlbflush.h:460 RIP: 0010:__flush_tlb_all+0x1b/0x3a [..] Call Trace: phys_pud_init+0x29c/0x2bb kernel_physical_mapping_init+0xfc/0x219 init_memory_mapping+0x1a5/0x3b0 arch_add_memory+0x2c/0x50 devm_memremap_pages+0x3aa/0x610 pmem_attach_disk+0x585/0x700 [nd_pmem] Andy wondered why a path that can sleep was using __flush_tlb_all() [1] and Dave confirmed the expectation for TLB flush is for modifying / invalidating existing pte entries, but not initial population [2]. Drop the usage of __flush_tlb_all() in phys_{p4d,pud,pmd}_init() on the expectation that this path is only ever populating empty entries for the linear map. Note, at linear map teardown time there is a call to the all-cpu flush_tlb_all() to invalidate the removed mappings. [1]: https://lore.kernel.org/patchwork/patch/1009434/#1193941 [2]: https://lore.kernel.org/patchwork/patch/1009434/#1194540 Fixes: f77084d96355 ("x86/mm/pat: Disable preemption around __flush_tlb_all()") Cc: Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> Cc: Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Borislav Petkov <bp(a)alien8.de> Cc: <stable(a)vger.kernel.org> Reported-by: Andy Lutomirski <luto(a)kernel.org> Suggested-by: Dave Hansen <dave.hansen(a)linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams(a)intel.com> --- arch/x86/mm/init_64.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 5fab264948c2..de95db8ac52f 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -584,7 +584,6 @@ phys_pud_init(pud_t *pud_page, unsigned long paddr, unsigned long paddr_end, paddr_end, page_size_mask, prot); - __flush_tlb_all(); continue; } /* @@ -627,7 +626,6 @@ phys_pud_init(pud_t *pud_page, unsigned long paddr, unsigned long paddr_end, pud_populate(&init_mm, pud, pmd); spin_unlock(&init_mm.page_table_lock); } - __flush_tlb_all(); update_page_count(PG_LEVEL_1G, pages); @@ -668,7 +666,6 @@ phys_p4d_init(p4d_t *p4d_page, unsigned long paddr, unsigned long paddr_end, paddr_last = phys_pud_init(pud, paddr, paddr_end, page_size_mask); - __flush_tlb_all(); continue; } @@ -680,7 +677,6 @@ phys_p4d_init(p4d_t *p4d_page, unsigned long paddr, unsigned long paddr_end, p4d_populate(&init_mm, p4d, pud); spin_unlock(&init_mm.page_table_lock); } - __flush_tlb_all(); return paddr_last; } @@ -733,8 +729,6 @@ kernel_physical_mapping_init(unsigned long paddr_start, if (pgd_changed) sync_global_pgds(vaddr_start, vaddr_end - 1); - __flush_tlb_all(); - return paddr_last; }

6 years, 10 months

4
6
0 0

[merged] scripts-spdxcheck-make-python3-compliant.patch removed from -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: scripts/spdxcheck.py: make python3 compliant has been removed from the -mm tree. Its filename was scripts-spdxcheck-make-python3-compliant.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Uwe Kleine-König <u.kleine-koenig(a)pengutronix.de> Subject: scripts/spdxcheck.py: make python3 compliant Without this change the following happens when using Python3 (3.6.6): $ echo "GPL-2.0" | python3 scripts/spdxcheck.py - FAIL: 'str' object has no attribute 'decode' Traceback (most recent call last): File "scripts/spdxcheck.py", line 253, in <module> parser.parse_lines(sys.stdin, args.maxlines, '-') File "scripts/spdxcheck.py", line 171, in parse_lines line = line.decode(locale.getpreferredencoding(False), errors='ignore') AttributeError: 'str' object has no attribute 'decode' So as the line is already a string, there is no need to decode it and the line can be dropped. /usr/bin/python on Arch is Python 3. So this would indeed be worth going into 4.19. Link: http://lkml.kernel.org/r/20181023070802.22558-1-u.kleine-koenig@pengutronix… Signed-off-by: Uwe Kleine-König <u.kleine-koenig(a)pengutronix.de> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Joe Perches <joe(a)perches.com> Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- scripts/spdxcheck.py | 1 - 1 file changed, 1 deletion(-) --- a/scripts/spdxcheck.py~scripts-spdxcheck-make-python3-compliant +++ a/scripts/spdxcheck.py @@ -168,7 +168,6 @@ class id_parser(object): self.curline = 0 try: for line in fd: - line = line.decode(locale.getpreferredencoding(False), errors='ignore') self.curline += 1 if self.curline > maxlines: break _ Patches currently in -mm which might be from u.kleine-koenig(a)pengutronix.de are

6 years, 10 months

1
0
0 0

[merged] ubsan-dont-mark-__ubsan_handle_builtin_unreachable-as-noreturn.patch removed from -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: lib/ubsan.c: don't mark __ubsan_handle_builtin_unreachable as noreturn has been removed from the -mm tree. Its filename was ubsan-dont-mark-__ubsan_handle_builtin_unreachable-as-noreturn.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Arnd Bergmann <arnd(a)arndb.de> Subject: lib/ubsan.c: don't mark __ubsan_handle_builtin_unreachable as noreturn gcc-8 complains about the prototype for this function: lib/ubsan.c:432:1: error: ignoring attribute 'noreturn' in declaration of a built-in function '__ubsan_handle_builtin_unreachable' because it conflicts with attribute 'const' [-Werror=attributes] This is actually a GCC's bug. In GCC internals __ubsan_handle_builtin_unreachable() declared with both 'noreturn' and 'const' attributes instead of only 'noreturn': https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84210 Workaround this by removing the noreturn attribute. [aryabinin: add information about GCC bug in changelog] Link: http://lkml.kernel.org/r/20181107144516.4587-1-aryabinin@virtuozzo.com Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> Signed-off-by: Andrey Ryabinin <aryabinin(a)virtuozzo.com> Acked-by: Olof Johansson <olof(a)lixom.net> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- lib/ubsan.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/lib/ubsan.c~ubsan-dont-mark-__ubsan_handle_builtin_unreachable-as-noreturn +++ a/lib/ubsan.c @@ -427,8 +427,7 @@ void __ubsan_handle_shift_out_of_bounds( EXPORT_SYMBOL(__ubsan_handle_shift_out_of_bounds); -void __noreturn -__ubsan_handle_builtin_unreachable(struct unreachable_data *data) +void __ubsan_handle_builtin_unreachable(struct unreachable_data *data) { unsigned long flags; _ Patches currently in -mm which might be from arnd(a)arndb.de are vfs-replace-current_kernel_time64-with-ktime-equivalent.patch

6 years, 10 months

1
0
0 0

[merged] ocfs2-free-up-write-context-when-direct-io-failed.patch removed from -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: ocfs2: free up write context when direct IO failed has been removed from the -mm tree. Its filename was ocfs2-free-up-write-context-when-direct-io-failed.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Wengang Wang <wen.gang.wang(a)oracle.com> Subject: ocfs2: free up write context when direct IO failed The write context should also be freed even when direct IO failed. Otherwise a memory leak is introduced and entries remain in oi->ip_unwritten_list causing the following BUG later in unlink path: ERROR: bug expression: !list_empty(&oi->ip_unwritten_list) ERROR: Clear inode of 215043, inode has unwritten extents ... Call Trace: ? __set_current_blocked+0x42/0x68 ocfs2_evict_inode+0x91/0x6a0 [ocfs2] ? bit_waitqueue+0x40/0x33 evict+0xdb/0x1af iput+0x1a2/0x1f7 do_unlinkat+0x194/0x28f SyS_unlinkat+0x1b/0x2f do_syscall_64+0x79/0x1ae entry_SYSCALL_64_after_hwframe+0x151/0x0 This patch also logs, with frequency limit, direct IO failures. Link: http://lkml.kernel.org/r/20181102170632.25921-1-wen.gang.wang@oracle.com Signed-off-by: Wengang Wang <wen.gang.wang(a)oracle.com> Reviewed-by: Junxiao Bi <junxiao.bi(a)oracle.com> Reviewed-by: Changwei Ge <ge.changwei(a)h3c.com> Reviewed-by: Joseph Qi <jiangqi903(a)gmail.com> Cc: Mark Fasheh <mark(a)fasheh.com> Cc: Joel Becker <jlbec(a)evilplan.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- fs/ocfs2/aops.c | 12 ++++++++++-- fs/ocfs2/cluster/masklog.h | 9 +++++++++ 2 files changed, 19 insertions(+), 2 deletions(-) --- a/fs/ocfs2/aops.c~ocfs2-free-up-write-context-when-direct-io-failed +++ a/fs/ocfs2/aops.c @@ -2411,8 +2411,16 @@ static int ocfs2_dio_end_io(struct kiocb /* this io's submitter should not have unlocked this before we could */ BUG_ON(!ocfs2_iocb_is_rw_locked(iocb)); - if (bytes > 0 && private) - ret = ocfs2_dio_end_io_write(inode, private, offset, bytes); + if (bytes <= 0) + mlog_ratelimited(ML_ERROR, "Direct IO failed, bytes = %lld", + (long long)bytes); + if (private) { + if (bytes > 0) + ret = ocfs2_dio_end_io_write(inode, private, offset, + bytes); + else + ocfs2_dio_free_write_ctx(inode, private); + } ocfs2_iocb_clear_rw_locked(iocb); --- a/fs/ocfs2/cluster/masklog.h~ocfs2-free-up-write-context-when-direct-io-failed +++ a/fs/ocfs2/cluster/masklog.h @@ -178,6 +178,15 @@ do { \ ##__VA_ARGS__); \ } while (0) +#define mlog_ratelimited(mask, fmt, ...) \ +do { \ + static DEFINE_RATELIMIT_STATE(_rs, \ + DEFAULT_RATELIMIT_INTERVAL, \ + DEFAULT_RATELIMIT_BURST); \ + if (__ratelimit(&_rs)) \ + mlog(mask, fmt, ##__VA_ARGS__); \ +} while (0) + #define mlog_errno(st) ({ \ int _st = (st); \ if (_st != -ERESTARTSYS && _st != -EINTR && \ _ Patches currently in -mm which might be from wen.gang.wang(a)oracle.com are

6 years, 10 months

1
0
0 0

[merged] mm-dont-reclaim-inodes-with-many-attached-pages.patch removed from -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: mm: don't reclaim inodes with many attached pages has been removed from the -mm tree. Its filename was mm-dont-reclaim-inodes-with-many-attached-pages.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Roman Gushchin <guro(a)fb.com> Subject: mm: don't reclaim inodes with many attached pages Spock reported that the commit 172b06c32b94 ("mm: slowly shrink slabs with a relatively small number of objects") leads to a regression on his setup: periodically the majority of the pagecache is evicted without an obvious reason, while before the change the amount of free memory was balancing around the watermark. The reason behind is that the mentioned above change created some minimal background pressure on the inode cache. The problem is that if an inode is considered to be reclaimed, all belonging pagecache page are stripped, no matter how many of them are there. So, if a huge multi-gigabyte file is cached in the memory, and the goal is to reclaim only few slab objects (unused inodes), we still can eventually evict all gigabytes of the pagecache at once. The workload described by Spock has few large non-mapped files in the pagecache, so it's especially noticeable. To solve the problem let's postpone the reclaim of inodes, which have more than 1 attached page. Let's wait until the pagecache pages will be evicted naturally by scanning the corresponding LRU lists, and only then reclaim the inode structure. Link: http://lkml.kernel.org/r/20181023164302.20436-1-guro@fb.com Signed-off-by: Roman Gushchin <guro(a)fb.com> Reported-by: Spock <dairinin(a)gmail.com> Tested-by: Spock <dairinin(a)gmail.com> Reviewed-by: Andrew Morton <akpm(a)linux-foundation.org> Cc: Michal Hocko <mhocko(a)kernel.org> Cc: Rik van Riel <riel(a)surriel.com> Cc: Randy Dunlap <rdunlap(a)infradead.org> Cc: <stable(a)vger.kernel.org> [4.19.x] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- fs/inode.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/fs/inode.c~mm-dont-reclaim-inodes-with-many-attached-pages +++ a/fs/inode.c @@ -730,8 +730,11 @@ static enum lru_status inode_lru_isolate return LRU_REMOVED; } - /* recently referenced inodes get one more pass */ - if (inode->i_state & I_REFERENCED) { + /* + * Recently referenced inodes and inodes with many attached pages + * get one more pass. + */ + if (inode->i_state & I_REFERENCED || inode->i_data.nrpages > 1) { inode->i_state &= ~I_REFERENCED; spin_unlock(&inode->i_lock); return LRU_ROTATE; _ Patches currently in -mm which might be from guro(a)fb.com are

6 years, 10 months

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[merged] mm-use-kvzalloc-for-swap_info_struct-allocation.patch removed from -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: mm/swapfile.c: use kvzalloc for swap_info_struct allocation has been removed from the -mm tree. Its filename was mm-use-kvzalloc-for-swap_info_struct-allocation.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Vasily Averin <vvs(a)virtuozzo.com> Subject: mm/swapfile.c: use kvzalloc for swap_info_struct allocation a2468cc9bfdf ("swap: choose swap device according to numa node") changed 'avail_lists' field of 'struct swap_info_struct' to an array. In popular linux distros it increased size of swap_info_struct up to 40 Kbytes and now swap_info_struct allocation requires order-4 page. Switch to kvzmalloc allows to avoid unexpected allocation failures. Link: http://lkml.kernel.org/r/fc23172d-3c75-21e2-d551-8b1808cbe593@virtuozzo.com Fixes: a2468cc9bfdf ("swap: choose swap device according to numa node") Signed-off-by: Vasily Averin <vvs(a)virtuozzo.com> Acked-by: Aaron Lu <aaron.lu(a)intel.com> Acked-by: Michal Hocko <mhocko(a)suse.com> Reviewed-by: Andrew Morton <akpm(a)linux-foundation.org> Cc: Huang Ying <ying.huang(a)intel.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/swapfile.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/mm/swapfile.c~mm-use-kvzalloc-for-swap_info_struct-allocation +++ a/mm/swapfile.c @@ -2813,7 +2813,7 @@ static struct swap_info_struct *alloc_sw unsigned int type; int i; - p = kzalloc(sizeof(*p), GFP_KERNEL); + p = kvzalloc(sizeof(*p), GFP_KERNEL); if (!p) return ERR_PTR(-ENOMEM); @@ -2824,7 +2824,7 @@ static struct swap_info_struct *alloc_sw } if (type >= MAX_SWAPFILES) { spin_unlock(&swap_lock); - kfree(p); + kvfree(p); return ERR_PTR(-EPERM); } if (type >= nr_swapfiles) { @@ -2838,7 +2838,7 @@ static struct swap_info_struct *alloc_sw smp_wmb(); nr_swapfiles++; } else { - kfree(p); + kvfree(p); p = swap_info[type]; /* * Do not memset this entry: a racing procfs swap_next() _ Patches currently in -mm which might be from vvs(a)virtuozzo.com are

6 years, 10 months

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[merged] hugetlbfs-fix-kernel-bug-at-fs-hugetlbfs-inodec-444.patch removed from -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: hugetlbfs: fix kernel BUG at fs/hugetlbfs/inode.c:444! has been removed from the -mm tree. Its filename was hugetlbfs-fix-kernel-bug-at-fs-hugetlbfs-inodec-444.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Mike Kravetz <mike.kravetz(a)oracle.com> Subject: hugetlbfs: fix kernel BUG at fs/hugetlbfs/inode.c:444! This bug has been experienced several times by Oracle DB team. The BUG is in remove_inode_hugepages() as follows: /* * If page is mapped, it was faulted in after being * unmapped in caller. Unmap (again) now after taking * the fault mutex. The mutex will prevent faults * until we finish removing the page. * * This race can only happen in the hole punch case. * Getting here in a truncate operation is a bug. */ if (unlikely(page_mapped(page))) { BUG_ON(truncate_op); In this case, the elevated map count is not the result of a race. Rather it was incorrectly incremented as the result of a bug in the huge pmd sharing code. Consider the following: - Process A maps a hugetlbfs file of sufficient size and alignment (PUD_SIZE) that a pmd page could be shared. - Process B maps the same hugetlbfs file with the same size and alignment such that a pmd page is shared. - Process B then calls mprotect() to change protections for the mapping with the shared pmd. As a result, the pmd is 'unshared'. - Process B then calls mprotect() again to chage protections for the mapping back to their original value. pmd remains unshared. - Process B then forks and process C is created. During the fork process, we do dup_mm -> dup_mmap -> copy_page_range to copy page tables. Copying page tables for hugetlb mappings is done in the routine copy_hugetlb_page_range. In copy_hugetlb_page_range(), the destination pte is obtained by: dst_pte = huge_pte_alloc(dst, addr, sz); If pmd sharing is possible, the returned pointer will be to a pte in an existing page table. In the situation above, process C could share with either process A or process B. Since process A is first in the list, the returned pte is a pointer to a pte in process A's page table. However, the following check for pmd sharing is in copy_hugetlb_page_range. /* If the pagetables are shared don't copy or take references */ if (dst_pte == src_pte) continue; Since process C is sharing with process A instead of process B, the above test fails. The code in copy_hugetlb_page_range which follows assumes dst_pte points to a huge_pte_none pte. It copies the pte entry from src_pte to dst_pte and increments this map count of the associated page. This is how we end up with an elevated map count. To solve, check the dst_pte entry for huge_pte_none. If !none, this implies PMD sharing so do not copy. Link: http://lkml.kernel.org/r/20181105212315.14125-1-mike.kravetz@oracle.com Fixes: c5c99429fa57 ("fix hugepages leak due to pagetable page sharing") Signed-off-by: Mike Kravetz <mike.kravetz(a)oracle.com> Reviewed-by: Naoya Horiguchi <n-horiguchi(a)ah.jp.nec.com> Cc: Michal Hocko <mhocko(a)kernel.org> Cc: Hugh Dickins <hughd(a)google.com> Cc: Andrea Arcangeli <aarcange(a)redhat.com> Cc: "Kirill A . Shutemov" <kirill.shutemov(a)linux.intel.com> Cc: Davidlohr Bueso <dave(a)stgolabs.net> Cc: Prakash Sangappa <prakash.sangappa(a)oracle.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/hugetlb.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) --- a/mm/hugetlb.c~hugetlbfs-fix-kernel-bug-at-fs-hugetlbfs-inodec-444 +++ a/mm/hugetlb.c @@ -3233,7 +3233,7 @@ static int is_hugetlb_entry_hwpoisoned(p int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src, struct vm_area_struct *vma) { - pte_t *src_pte, *dst_pte, entry; + pte_t *src_pte, *dst_pte, entry, dst_entry; struct page *ptepage; unsigned long addr; int cow; @@ -3261,15 +3261,30 @@ int copy_hugetlb_page_range(struct mm_st break; } - /* If the pagetables are shared don't copy or take references */ - if (dst_pte == src_pte) + /* + * If the pagetables are shared don't copy or take references. + * dst_pte == src_pte is the common case of src/dest sharing. + * + * However, src could have 'unshared' and dst shares with + * another vma. If dst_pte !none, this implies sharing. + * Check here before taking page table lock, and once again + * after taking the lock below. + */ + dst_entry = huge_ptep_get(dst_pte); + if ((dst_pte == src_pte) || !huge_pte_none(dst_entry)) continue; dst_ptl = huge_pte_lock(h, dst, dst_pte); src_ptl = huge_pte_lockptr(h, src, src_pte); spin_lock_nested(src_ptl, SINGLE_DEPTH_NESTING); entry = huge_ptep_get(src_pte); - if (huge_pte_none(entry)) { /* skip none entry */ + dst_entry = huge_ptep_get(dst_pte); + if (huge_pte_none(entry) || !huge_pte_none(dst_entry)) { + /* + * Skip if src entry none. Also, skip in the + * unlikely case dst entry !none as this implies + * sharing with another vma. + */ ; } else if (unlikely(is_hugetlb_entry_migration(entry) || is_hugetlb_entry_hwpoisoned(entry))) { _ Patches currently in -mm which might be from mike.kravetz(a)oracle.com are

6 years, 10 months

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