Buildresult: powerpc-fixes/44x/rainier_defconfig/powerpc-gcc4.6 built on Dec 17 2019, 01:03

kisskb

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Status:	OK
Date/Time:	Dec 17 2019, 01:03
Duration:	0:00:35.434177
Builder:	ka3
Revision:	powerpc: Fix __clear_user() with KUAP enabled (`61e3acd8c693a14fc69b824cb5b08d02cb90a6e7)`
Target:	powerpc-fixes/44x/rainier_defconfig/powerpc-gcc4.6
Branch:	powerpc-fixes
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	44x/rainier_defconfig (download)
Log:	Download original Possible warnings (3) kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] drivers/tty/serial/8250/8250_core.c:248:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify 61e3acd8c693a14fc69b824cb5b08d02cb90a6e7^{commit} 61e3acd8c693a14fc69b824cb5b08d02cb90a6e7 already have revision, skipping fetch # git checkout -q -f -B kisskb 61e3acd8c693a14fc69b824cb5b08d02cb90a6e7 # git clean -qxdf # < git log -1 # commit 61e3acd8c693a14fc69b824cb5b08d02cb90a6e7 # Author: Andrew Donnellan <ajd@linux.ibm.com> # Date: Tue Dec 10 00:22:21 2019 +1100 # # powerpc: Fix __clear_user() with KUAP enabled # # The KUAP implementation adds calls in clear_user() to enable and # disable access to userspace memory. However, it doesn't add these to # __clear_user(), which is used in the ptrace regset code. # # As there's only one direct user of __clear_user() (the regset code), # and the time taken to set the AMR for KUAP purposes is going to # dominate the cost of a quick access_ok(), there's not much point # having a separate path. # # Rename __clear_user() to __arch_clear_user(), and make __clear_user() # just call clear_user(). # # Reported-by: syzbot+f25ecf4b2982d8c7a640@syzkaller-ppc64.appspotmail.com # Reported-by: Daniel Axtens <dja@axtens.net> # Suggested-by: Michael Ellerman <mpe@ellerman.id.au> # Fixes: de78a9c42a79 ("powerpc: Add a framework for Kernel Userspace Access Protection") # Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com> # [mpe: Use __arch_clear_user() for the asm version like arm64 & nds32] # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20191209132221.15328-1-ajd@linux.ibm.com # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version # < git log --format=%s --max-count=1 61e3acd8c693a14fc69b824cb5b08d02cb90a6e7 # < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_44x_rainier_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- 44x/rainier_defconfig # make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_44x_rainier_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c:338:21: note: 'pdeo' was declared here /kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:248:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:228:19: note: 'i' was declared here INFO: Uncompressed kernel (size 0x46bb08) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x500000) Image Name: Linux-5.5.0-rc1-g61e3acd8c693 Created: Tue Dec 17 01:04:13 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2230626 Bytes = 2178.35 KiB = 2.13 MiB Load Address: 00500000 Entry Point: 005014e0 Completed OK # rm -rf /kisskb/build/powerpc-fixes_44x_rainier_defconfig_powerpc-gcc4.6 # Build took: 0:00:35.434177

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