Buildresult: linus/mpc83xx_defconfig/powerpc-gcc4.6 built on Feb 26 2020, 16:29

kisskb

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Status:	OK
Date/Time:	Feb 26 2020, 16:29
Duration:	0:01:42.599762
Builder:	ka1
Revision:	floppy: check FDC index for errors before assigning it (`2e90ca68b0d2f5548804f22f0dd61145516171e3)`
Target:	linus/mpc83xx_defconfig/powerpc-gcc4.6
Branch:	linus
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	mpc83xx_defconfig (download)
Log:	Download original Possible warnings (8) kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:72:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] fs/ext4/extents.c:5009:23: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:2598:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:1859:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] fs/io_uring.c:5819:13: warning: 'err' may be used uninitialized in this function [-Wuninitialized] drivers/usb/core/devio.c:625:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify 2e90ca68b0d2f5548804f22f0dd61145516171e3^{commit} 2e90ca68b0d2f5548804f22f0dd61145516171e3 already have revision, skipping fetch # git checkout -q -f -B kisskb 2e90ca68b0d2f5548804f22f0dd61145516171e3 # git clean -qxdf # < git log -1 # commit 2e90ca68b0d2f5548804f22f0dd61145516171e3 # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Fri Feb 21 12:43:35 2020 -0800 # # floppy: check FDC index for errors before assigning it # # Jordy Zomer reported a KASAN out-of-bounds read in the floppy driver in # wait_til_ready(). # # Which on the face of it can't happen, since as Willy Tarreau points out, # the function does no particular memory access. Except through the FDCS # macro, which just indexes a static allocation through teh current fdc, # which is always checked against N_FDC. # # Except the checking happens after we've already assigned the value. # # The floppy driver is a disgrace (a lot of it going back to my original # horrd "design"), and has no real maintainer. Nobody has the hardware, # and nobody really cares. But it still gets used in virtual environment # because it's one of those things that everybody supports. # # The whole thing should be re-written, or at least parts of it should be # seriously cleaned up. The 'current fdc' index, which is used by the # FDCS macro, and which is often shadowed by a local 'fdc' variable, is a # prime example of how not to write code. # # But because nobody has the hardware or the motivation, let's just fix up # the immediate problem with a nasty band-aid: test the fdc index before # actually assigning it to the static 'fdc' variable. # # Reported-by: Jordy Zomer <jordy@simplyhacker.com> # Cc: Willy Tarreau <w@1wt.eu> # Cc: Dan Carpenter <dan.carpenter@oracle.com> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /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 2e90ca68b0d2f5548804f22f0dd61145516171e3 # < make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_mpc83xx_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- mpc83xx_defconfig # < make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_mpc83xx_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- help # make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_mpc83xx_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- olddefconfig # make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_mpc83xx_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:72:12: 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/fs/ext4/extents.c: In function 'ext4_convert_unwritten_io_end_vec': /kisskb/src/fs/ext4/extents.c:5009:23: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2598:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write': /kisskb/src/drivers/base/regmap/regmap.c:1859:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/io_uring.c: In function '__io_sqe_files_update.isra.81': /kisskb/src/fs/io_uring.c:5819:13: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/usb/core/devio.c: In function 'async_completed': /kisskb/src/drivers/usb/core/devio.c:625:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized] INFO: Uncompressed kernel (size 0x64444c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x64444c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x64444c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x64444c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x64444c) overlaps the address of the wrapper(0x400000) INFO: Uncompressed kernel (size 0x64444c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x633dcc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x64444c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) Image Name: Linux-5.6.0-rc3-g2e90ca68b0d2 Created: Wed Feb 26 16:31:00 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3123872 Bytes = 3050.66 KiB = 2.98 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.6.0-rc3-g2e90ca68b0d2 Created: Wed Feb 26 16:31:00 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3154157 Bytes = 3080.23 KiB = 3.01 MiB Load Address: 00700000 Entry Point: 00700290 Image Name: Linux-5.6.0-rc3-g2e90ca68b0d2 Created: Wed Feb 26 16:31:00 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3153928 Bytes = 3080.01 KiB = 3.01 MiB Load Address: 00700000 Entry Point: 00700290 Image Name: Linux-5.6.0-rc3-g2e90ca68b0d2 Created: Wed Feb 26 16:31:00 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3154146 Bytes = 3080.22 KiB = 3.01 MiB Load Address: 00700000 Entry Point: 00700290 Image Name: Linux-5.6.0-rc3-g2e90ca68b0d2 Created: Wed Feb 26 16:31:00 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3154123 Bytes = 3080.20 KiB = 3.01 MiB Load Address: 00700000 Entry Point: 00700290 Image Name: Linux-5.6.0-rc3-g2e90ca68b0d2 Created: Wed Feb 26 16:31:00 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3153178 Bytes = 3079.28 KiB = 3.01 MiB Load Address: 00700000 Entry Point: 00700290 Image Name: Linux-5.6.0-rc3-g2e90ca68b0d2 Created: Wed Feb 26 16:31:01 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3154404 Bytes = 3080.47 KiB = 3.01 MiB Load Address: 00700000 Entry Point: 00700290 Completed OK # rm -rf /kisskb/build/linus_mpc83xx_defconfig_powerpc-gcc4.6 # Build took: 0:01:42.599762

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