# git rev-parse -q --verify 642e7fd23353e22290e3d51719fcb658dc252342^{commit}
642e7fd23353e22290e3d51719fcb658dc252342
already have revision, skipping fetch
# git checkout -q -f -B kisskb 642e7fd23353e22290e3d51719fcb658dc252342
# git clean -qxdf
# < git log -1
# commit 642e7fd23353e22290e3d51719fcb658dc252342
# Merge: 2103596 c9a2119
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Apr 2 21:22:12 2018 -0700
# 
#     Merge branch 'syscalls-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux
#     
#     Pull removal of in-kernel calls to syscalls from Dominik Brodowski:
#      "System calls are interaction points between userspace and the kernel.
#       Therefore, system call functions such as sys_xyzzy() or
#       compat_sys_xyzzy() should only be called from userspace via the
#       syscall table, but not from elsewhere in the kernel.
#     
#       At least on 64-bit x86, it will likely be a hard requirement from
#       v4.17 onwards to not call system call functions in the kernel: It is
#       better to use use a different calling convention for system calls
#       there, where struct pt_regs is decoded on-the-fly in a syscall wrapper
#       which then hands processing over to the actual syscall function. This
#       means that only those parameters which are actually needed for a
#       specific syscall are passed on during syscall entry, instead of
#       filling in six CPU registers with random user space content all the
#       time (which may cause serious trouble down the call chain). Those
#       x86-specific patches will be pushed through the x86 tree in the near
#       future.
#     
#       Moreover, rules on how data may be accessed may differ between kernel
#       data and user data. This is another reason why calling sys_xyzzy() is
#       generally a bad idea, and -- at most -- acceptable in arch-specific
#       code.
#     
#       This patchset removes all in-kernel calls to syscall functions in the
#       kernel with the exception of arch/. On top of this, it cleans up the
#       three places where many syscalls are referenced or prototyped, namely
#       kernel/sys_ni.c, include/linux/syscalls.h and include/linux/compat.h"
#     
#     * 'syscalls-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux: (109 commits)
#       bpf: whitelist all syscalls for error injection
#       kernel/sys_ni: remove {sys_,sys_compat} from cond_syscall definitions
#       kernel/sys_ni: sort cond_syscall() entries
#       syscalls/x86: auto-create compat_sys_*() prototypes
#       syscalls: sort syscall prototypes in include/linux/compat.h
#       net: remove compat_sys_*() prototypes from net/compat.h
#       syscalls: sort syscall prototypes in include/linux/syscalls.h
#       kexec: move sys_kexec_load() prototype to syscalls.h
#       x86/sigreturn: use SYSCALL_DEFINE0
#       x86: fix sys_sigreturn() return type to be long, not unsigned long
#       x86/ioport: add ksys_ioperm() helper; remove in-kernel calls to sys_ioperm()
#       mm: add ksys_readahead() helper; remove in-kernel calls to sys_readahead()
#       mm: add ksys_mmap_pgoff() helper; remove in-kernel calls to sys_mmap_pgoff()
#       mm: add ksys_fadvise64_64() helper; remove in-kernel call to sys_fadvise64_64()
#       fs: add ksys_fallocate() wrapper; remove in-kernel calls to sys_fallocate()
#       fs: add ksys_p{read,write}64() helpers; remove in-kernel calls to syscalls
#       fs: add ksys_truncate() wrapper; remove in-kernel calls to sys_truncate()
#       fs: add ksys_sync_file_range helper(); remove in-kernel calls to syscall
#       kernel: add ksys_setsid() helper; remove in-kernel call to sys_setsid()
#       kernel: add ksys_unshare() helper; remove in-kernel calls to sys_unshare()
#       ...
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-gcc --version
# < git log --format=%s --max-count=1 642e7fd23353e22290e3d51719fcb658dc252342
# < make -s -j 8 ARCH=i386 O=/kisskb/build/linus_i386-allmodconfig_i386 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-  allmodconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_SAMPLES=n
# yes \n | make -s -j 8 ARCH=i386 O=/kisskb/build/linus_i386-allmodconfig_i386 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-  oldconfig
yes: standard output: Broken pipe
yes: write error
# make -s -j 8 ARCH=i386 O=/kisskb/build/linus_i386-allmodconfig_i386 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-  
CONFIG_CC_STACKPROTECTOR_AUTO: -fstack-protector available but compiler is broken: disabling
/kisskb/src/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap':
/kisskb/src/arch/x86/kernel/e820.c:652:2: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/hw_breakpoint.c: In function 'arch_validate_hwbkpt_settings':
/kisskb/src/arch/x86/kernel/hw_breakpoint.c:361:20: warning: 'align' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/apic/io_apic.c: In function 'mp_map_pin_to_irq':
/kisskb/src/arch/x86/kernel/apic/io_apic.c:1033:6: warning: 'irq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page':
/kisskb/src/mm/hugetlb.c:1440:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/kisskb/src/kernel/cgroup/cgroup-v1.c:1268:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kvm/svm.c: In function 'sev_dbg_crypt.isra.56':
/kisskb/src/arch/x86/kvm/svm.c:6563:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kvm/svm.c: In function 'sev_launch_update_data.isra.50':
/kisskb/src/arch/x86/kvm/svm.c:6214:9: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/sound/hda/hdac_regmap.c: In function 'hda_reg_write':
/kisskb/src/sound/hda/hdac_regmap.c:282:16: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/btrfs/ref-verify.c: In function 'process_extent_item.isra.2':
/kisskb/src/fs/btrfs/ref-verify.c:516:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/btrfs/ref-verify.c: In function 'process_leaf.isra.3':
/kisskb/src/fs/btrfs/ref-verify.c:568:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/f2fs/file.c: In function 'f2fs_precache_extents':
/kisskb/src/fs/f2fs/file.c:2786:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/clk/renesas/clk-sh73a0.c: In function 'sh73a0_cpg_register_clock':
/kisskb/src/drivers/clk/renesas/clk-sh73a0.c:155:3: warning: 'parent_name' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/raid6/recov_avx512.c:387:2: warning: #warning "your version of binutils lacks AVX512 support" [-Wcpp]
/kisskb/src/drivers/dma-buf/reservation.c: In function 'reservation_object_add_shared_replace':
/kisskb/src/drivers/dma-buf/reservation.c:207:2: warning: 'k' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/dma-buf/reservation.c:210:7: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/sound/soc/codecs/arizona.c: In function 'arizona_hw_params':
/kisskb/src/sound/soc/codecs/arizona.c:1889:3: warning: 'aif_rx_state' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/sound/soc/codecs/arizona.c:1886:3: warning: 'aif_tx_state' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/sound/soc/codecs/da7219-aad.c: In function 'da7219_aad_hptest_work':
/kisskb/src/sound/soc/codecs/da7219-aad.c:318:17: warning: 'pll_ctrl' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/bridge/br_netlink.c: In function 'br_process_vlan_info':
/kisskb/src/net/bridge/br_netlink.c:577:10: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc':
/kisskb/src/fs/nfsd/nfs4xdr.c:2043:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/nfsd/nfs4xdr.c:2048:11: warning: 'end' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/sound/soc/codecs/rt5665.c: In function 'rt5665_i2s_pin_event':
/kisskb/src/sound/soc/codecs/rt5665.c:2666:23: warning: 'val2' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/sound/soc/codecs/rt5665.c:2663:23: warning: 'val1' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c: In function 'amdgpu_set_pp_od_clk_voltage':
/kisskb/src/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c:414:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dce_calcs.c: In function 'calculate_bandwidth':
/kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dce_calcs.c:2017:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=]
/kisskb/src/net/mac80211/mlme.c: In function 'ieee80211_handle_pwr_constr.isra.12':
/kisskb/src/net/mac80211/mlme.c:1351:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mesh_pathtbl.c: In function 'mesh_path_add':
/kisskb/src/net/mac80211/mesh_pathtbl.c:417:28: warning: 'new_mpath' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/infiniband/hw/cxgb4/device.c: In function 'wr_log_show':
/kisskb/src/drivers/infiniband/hw/cxgb4/device.c:152:14: warning: 'prev_time' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/input/rmi4/rmi_f11.c: In function 'rmi_f11_finger_handler':
/kisskb/src/drivers/input/rmi4/rmi_f11.c:631:3: warning: 'abs_fingers' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/iommu/io-pgtable-arm-v7s.c: In function '__arm_v7s_map':
/kisskb/src/drivers/iommu/io-pgtable-arm-v7s.c:468:2: warning: 'cptep' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c: In function 'gk104_top_oneinit':
/kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:101:1: warning: 'inst' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:101:1: warning: 'type' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/vmw_vsock/hyperv_transport.c: In function 'hvs_open_connection':
/kisskb/src/net/vmw_vsock/hyperv_transport.c:399:24: warning: 'hvs_new' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/vmw_vsock/hyperv_transport.c:383:14: warning: 'hvs' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/vmw_vsock/hyperv_transport.c:202:20: warning: 'vnew' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/vmw_vsock/hyperv_transport.c:331:21: note: 'vnew' was declared here
/kisskb/src/drivers/media/usb/dvb-usb/pctv452e.c: In function 'pctv452e_frontend_attach':
/kisskb/src/drivers/media/usb/dvb-usb/pctv452e.c:922:2: warning: value computed is not used [-Wunused-value]
/kisskb/src/drivers/net/wireless/broadcom/b43/phy_n.c: In function 'b43_nphy_rf_ctl_override_rev7':
/kisskb/src/drivers/net/wireless/broadcom/b43/phy_n.c:202:21: warning: 'val_addr' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c: In function 'update_root_ft_create':
/kisskb/src/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c:867:5: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c: In function 'rtl8723a_phy_lc_calibrate':
/kisskb/src/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c:3481:23: warning: 'rf_amode' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1822:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1529:34: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1732:46: note: 'linear' was declared here
/kisskb/src/drivers/video/fbdev/intelfb/intelfbhw.c: In function 'calc_pll_params':
/kisskb/src/drivers/video/fbdev/intelfb/intelfbhw.c:1012:2: warning: 'm2' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/video/fbdev/intelfb/intelfbhw.c:1012:2: warning: 'm1' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/staging/lustre/lustre/ptlrpc/nrs.c: In function 'ptlrpc_nrs_policy_register.constprop.12':
/kisskb/src/include/linux/string.h:266:29: warning: array subscript is above array bounds [-Warray-bounds]
Completed OK
# rm -rf /kisskb/build/linus_i386-allmodconfig_i386
# Build took: 0:21:50.262398