Buildresult: linus/omap1_defconfig/arm-gcc4.6 built on Apr 3 2018, 17:46

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Status:	OK
Date/Time:	Apr 3 2018, 17:46
Duration:	0:01:23.828720
Builder:	ka1
Revision:	Merge branch 'syscalls-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux (`642e7fd23353e22290e3d51719fcb658dc252342)`
Target:	linus/omap1_defconfig/arm-gcc4.6
Branch:	linus
Compiler:	arm-gcc4.6 (arm-unknown-linux-gnueabi-gcc (GCC) 4.6.3)
Config:	omap1_defconfig (download)
Log:	Download original Possible warnings (5) kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/srcutree.c:127:33: warning: 'levelspread[<Ued20>]' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1822:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1529:34: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] drivers/perf/arm_pmu_platform.c:234:5: warning: 'err' may be used uninitialized in this function [-Wuninitialized] Full Log # 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/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version # < git log --format=%s --max-count=1 642e7fd23353e22290e3d51719fcb658dc252342 # < make -s -j 8 ARCH=arm O=/kisskb/build/linus_omap1_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi- omap1_defconfig # make -s -j 8 ARCH=arm O=/kisskb/build/linus_omap1_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi- /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/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields': /kisskb/src/kernel/rcu/srcutree.c:127:33: warning: 'levelspread[<Ued20>]' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/rcu/srcutree.c:94:6: note: 'levelspread[<Ued20>]' was declared here /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/perf/arm_pmu_platform.c: In function 'arm_pmu_device_probe': /kisskb/src/drivers/perf/arm_pmu_platform.c:234:5: warning: 'err' may be used uninitialized in this function [-Wuninitialized] Completed OK # rm -rf /kisskb/build/linus_omap1_defconfig_arm # Build took: 0:01:23.828720

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