# git rev-parse -q --verify a68a0262abdaa251e12c53715f48e698a18ef402^{commit} a68a0262abdaa251e12c53715f48e698a18ef402 already have revision, skipping fetch # git checkout -q -f -B kisskb a68a0262abdaa251e12c53715f48e698a18ef402 # git clean -qxdf # < git log -1 # commit a68a0262abdaa251e12c53715f48e698a18ef402 # Author: Minchan Kim # Date: Tue Dec 8 20:57:18 2020 -0800 # # mm/madvise: remove racy mm ownership check # # Jann spotted the security hole due to race of mm ownership check. # # If the task is sharing the mm_struct but goes through execve() before # mm_access(), it could skip process_madvise_behavior_valid check. That # makes *any advice hint* to reach into the remote process. # # This patch removes the mm ownership check. With it, it will lose the # ability that local process could give *any* advice hint with vector # interface for some reason (e.g., performance). Since there is no # concrete example in upstream yet, it would be better to remove the # abiliity at this moment and need to review when such new advice comes # up. # # Fixes: ecb8ac8b1f14 ("mm/madvise: introduce process_madvise() syscall: an external memory hinting API") # Reported-by: Jann Horn # Suggested-by: Jann Horn # Signed-off-by: Minchan Kim # Signed-off-by: Linus Torvalds # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux-ld --version # < git log --format=%s --max-count=1 a68a0262abdaa251e12c53715f48e698a18ef402 # < make -s -j 10 ARCH=parisc O=/kisskb/build/linus_parisc-allmodconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux- allmodconfig # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # Added to kconfig CONFIG_SAMPLES=n # < make -s -j 10 ARCH=parisc O=/kisskb/build/linus_parisc-allmodconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux- help # make -s -j 10 ARCH=parisc O=/kisskb/build/linus_parisc-allmodconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux- olddefconfig # make -s -j 10 ARCH=parisc O=/kisskb/build/linus_parisc-allmodconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux- /kisskb/src/block/genhd.c: In function 'diskstats_show': /kisskb/src/block/genhd.c:1662:1: warning: the frame size of 1688 bytes is larger than 1280 bytes [-Wframe-larger-than=] } ^ /kisskb/src/net/sched/sch_cake.c: In function 'cake_dump_stats': /kisskb/src/net/sched/sch_cake.c:2942:1: warning: the frame size of 1480 bytes is larger than 1280 bytes [-Wframe-larger-than=] } ^ /kisskb/src/drivers/parisc/dino.c:160:12: warning: 'pci_dev_is_behind_card_dino' defined but not used [-Wunused-function] static int pci_dev_is_behind_card_dino(struct pci_dev *dev) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/lib/xxhash.c: In function 'xxh64': /kisskb/src/lib/xxhash.c:236:1: warning: the frame size of 1624 bytes is larger than 1280 bytes [-Wframe-larger-than=] } ^ In file included from /kisskb/src/drivers/net/phy/dp83640.c:23: /kisskb/src/drivers/net/phy/dp83640_reg.h:8: warning: "PAGE0" redefined #define PAGE0 0x0000 In file included from /kisskb/src/include/linux/mm_types_task.h:16, from /kisskb/src/include/linux/mm_types.h:5, from /kisskb/src/include/linux/mmzone.h:21, from /kisskb/src/include/linux/gfp.h:6, from /kisskb/src/include/linux/xarray.h:14, from /kisskb/src/include/linux/radix-tree.h:19, from /kisskb/src/include/linux/fs.h:15, from /kisskb/src/include/linux/compat.h:17, from /kisskb/src/include/linux/ethtool.h:17, from /kisskb/src/drivers/net/phy/dp83640.c:11: /kisskb/src/arch/parisc/include/asm/page.h:187: note: this is the location of the previous definition #define PAGE0 ((struct zeropage *)__PAGE_OFFSET) In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.c:60: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2052: warning: "writeq" redefined #define writeq(val64, db) \ In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.c:20: /kisskb/src/arch/parisc/include/asm/io.h:211: note: this is the location of the previous definition #define writeq writeq In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.c:60: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2060: warning: "writeq_relaxed" redefined #define writeq_relaxed writeq In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.c:20: /kisskb/src/arch/parisc/include/asm/io.h:220: note: this is the location of the previous definition #define writeq_relaxed(q, addr) writeq(q, addr) In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c:18: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2052: warning: "writeq" redefined #define writeq(val64, db) \ In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/include/linux/pci.h:38, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c:12: /kisskb/src/arch/parisc/include/asm/io.h:211: note: this is the location of the previous definition #define writeq writeq In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c:18: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2060: warning: "writeq_relaxed" redefined #define writeq_relaxed writeq In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/include/linux/pci.h:38, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c:12: /kisskb/src/arch/parisc/include/asm/io.h:220: note: this is the location of the previous definition #define writeq_relaxed(q, addr) writeq(q, addr) In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c:23: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2052: warning: "writeq" redefined #define writeq(val64, db) \ In file included from /kisskb/src/include/linux/scatterlist.h:9, from /kisskb/src/include/linux/dma-mapping.h:10, from /kisskb/src/include/linux/skbuff.h:31, from /kisskb/src/include/linux/if_ether.h:19, from /kisskb/src/include/uapi/linux/ethtool.h:19, from /kisskb/src/include/linux/ethtool.h:18, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c:13: /kisskb/src/arch/parisc/include/asm/io.h:211: note: this is the location of the previous definition #define writeq writeq In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c:23: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2060: warning: "writeq_relaxed" redefined #define writeq_relaxed writeq In file included from /kisskb/src/include/linux/scatterlist.h:9, from /kisskb/src/include/linux/dma-mapping.h:10, from /kisskb/src/include/linux/skbuff.h:31, from /kisskb/src/include/linux/if_ether.h:19, from /kisskb/src/include/uapi/linux/ethtool.h:19, from /kisskb/src/include/linux/ethtool.h:18, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c:13: /kisskb/src/arch/parisc/include/asm/io.h:220: note: this is the location of the previous definition #define writeq_relaxed(q, addr) writeq(q, addr) In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c:20: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2052: warning: "writeq" redefined #define writeq(val64, db) \ In file included from /kisskb/src/include/linux/scatterlist.h:9, from /kisskb/src/include/linux/dma-mapping.h:10, from /kisskb/src/include/linux/skbuff.h:31, from /kisskb/src/include/linux/if_ether.h:19, from /kisskb/src/include/uapi/linux/ethtool.h:19, from /kisskb/src/include/linux/ethtool.h:18, from /kisskb/src/include/linux/netdevice.h:37, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c:11: /kisskb/src/arch/parisc/include/asm/io.h:211: note: this is the location of the previous definition #define writeq writeq In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c:20: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2060: warning: "writeq_relaxed" redefined #define writeq_relaxed writeq In file included from /kisskb/src/include/linux/scatterlist.h:9, from /kisskb/src/include/linux/dma-mapping.h:10, from /kisskb/src/include/linux/skbuff.h:31, from /kisskb/src/include/linux/if_ether.h:19, from /kisskb/src/include/uapi/linux/ethtool.h:19, from /kisskb/src/include/linux/ethtool.h:18, from /kisskb/src/include/linux/netdevice.h:37, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c:11: /kisskb/src/arch/parisc/include/asm/io.h:220: note: this is the location of the previous definition #define writeq_relaxed(q, addr) writeq(q, addr) In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c:24: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2052: warning: "writeq" redefined #define writeq(val64, db) \ In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c:14: /kisskb/src/arch/parisc/include/asm/io.h:211: note: this is the location of the previous definition #define writeq writeq In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c:24: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2060: warning: "writeq_relaxed" redefined #define writeq_relaxed writeq In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c:14: /kisskb/src/arch/parisc/include/asm/io.h:220: note: this is the location of the previous definition #define writeq_relaxed(q, addr) writeq(q, addr) In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c:20: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2052: warning: "writeq" redefined #define writeq(val64, db) \ In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/include/linux/pci.h:38, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c:11: /kisskb/src/arch/parisc/include/asm/io.h:211: note: this is the location of the previous definition #define writeq writeq In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c:20: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2060: warning: "writeq_relaxed" redefined #define writeq_relaxed writeq In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/include/linux/pci.h:38, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c:11: /kisskb/src/arch/parisc/include/asm/io.h:220: note: this is the location of the previous definition #define writeq_relaxed(q, addr) writeq(q, addr) In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c:17: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2052: warning: "writeq" redefined #define writeq(val64, db) \ In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/include/linux/pci.h:38, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c:9: /kisskb/src/arch/parisc/include/asm/io.h:211: note: this is the location of the previous definition #define writeq writeq In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c:17: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2060: warning: "writeq_relaxed" redefined #define writeq_relaxed writeq In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/include/linux/pci.h:38, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c:9: /kisskb/src/arch/parisc/include/asm/io.h:220: note: this is the location of the previous definition #define writeq_relaxed(q, addr) writeq(q, addr) In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c:14: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2052: warning: "writeq" redefined #define writeq(val64, db) \ In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/include/linux/pci.h:38, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c:10: /kisskb/src/arch/parisc/include/asm/io.h:211: note: this is the location of the previous definition #define writeq writeq In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c:14: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2060: warning: "writeq_relaxed" redefined #define writeq_relaxed writeq In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/include/linux/pci.h:38, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c:10: /kisskb/src/arch/parisc/include/asm/io.h:220: note: this is the location of the previous definition #define writeq_relaxed(q, addr) writeq(q, addr) In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_dim.c:12: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2052: warning: "writeq" redefined #define writeq(val64, db) \ In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:23, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_dim.c:12: /kisskb/src/arch/parisc/include/asm/io.h:211: note: this is the location of the previous definition #define writeq writeq In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_dim.c:12: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2060: warning: "writeq_relaxed" redefined #define writeq_relaxed writeq In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:23, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_dim.c:12: /kisskb/src/arch/parisc/include/asm/io.h:220: note: this is the location of the previous definition #define writeq_relaxed(q, addr) writeq(q, addr) In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c:24: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2052: warning: "writeq" redefined #define writeq(val64, db) \ In file included from /kisskb/src/include/linux/scatterlist.h:9, from /kisskb/src/include/linux/dma-mapping.h:10, from /kisskb/src/include/linux/skbuff.h:31, from /kisskb/src/include/linux/if_ether.h:19, from /kisskb/src/include/uapi/linux/ethtool.h:19, from /kisskb/src/include/linux/ethtool.h:18, from /kisskb/src/include/linux/netdevice.h:37, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c:10: /kisskb/src/arch/parisc/include/asm/io.h:211: note: this is the location of the previous definition #define writeq writeq In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c:24: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2060: warning: "writeq_relaxed" redefined #define writeq_relaxed writeq In file included from /kisskb/src/include/linux/scatterlist.h:9, from /kisskb/src/include/linux/dma-mapping.h:10, from /kisskb/src/include/linux/skbuff.h:31, from /kisskb/src/include/linux/if_ether.h:19, from /kisskb/src/include/uapi/linux/ethtool.h:19, from /kisskb/src/include/linux/ethtool.h:18, from /kisskb/src/include/linux/netdevice.h:37, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c:10: /kisskb/src/arch/parisc/include/asm/io.h:220: note: this is the location of the previous definition #define writeq_relaxed(q, addr) writeq(q, addr) In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_debugfs.c:15: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2052: warning: "writeq" redefined #define writeq(val64, db) \ In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/include/linux/pci.h:38, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_debugfs.c:12: /kisskb/src/arch/parisc/include/asm/io.h:211: note: this is the location of the previous definition #define writeq writeq In file included from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_debugfs.c:15: /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt.h:2060: warning: "writeq_relaxed" redefined #define writeq_relaxed writeq In file included from /kisskb/src/include/linux/io.h:13, from /kisskb/src/include/linux/irq.h:20, from /kisskb/src/arch/parisc/include/asm/hardirq.h:13, from /kisskb/src/include/linux/hardirq.h:10, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/include/linux/pci.h:38, from /kisskb/src/drivers/net/ethernet/broadcom/bnxt/bnxt_debugfs.c:12: /kisskb/src/arch/parisc/include/asm/io.h:220: note: this is the location of the previous definition #define writeq_relaxed(q, addr) writeq(q, addr) /kisskb/src/drivers/input/joystick/analog.c:160:2: warning: #warning Precise timer not defined for this architecture. [-Wcpp] #warning Precise timer not defined for this architecture. ^~~~~~~ /kisskb/src/drivers/gpu/drm/rockchip/cdn-dp-core.c:1124:12: warning: 'cdn_dp_resume' defined but not used [-Wunused-function] static int cdn_dp_resume(struct device *dev) ^~~~~~~~~~~~~ /kisskb/src/drivers/gpu/drm/nouveau/nvkm/engine/device/ctrl.c: In function 'nvkm_control_mthd_pstate_info': /kisskb/src/drivers/gpu/drm/nouveau/nvkm/engine/device/ctrl.c:60:21: warning: overflow in conversion from 'int' to '__s8' {aka 'signed char'} changes value from '-251' to '5' [-Woverflow] args->v0.pwrsrc = -ENOSYS; ^ Completed OK # rm -rf /kisskb/build/linus_parisc-allmodconfig_parisc-gcc8 # Build took: 0:37:17.606340