Buildresult: linus/ppc40x_defconfig/powerpc-gcc4.6 built on Oct 19 2018, 02:15
kisskb
Revisions
|
Branches
|
Compilers
|
Configs
|
Build Results
|
Build Failures
|
Status:
OK
Date/Time:
Oct 19 2018, 02:15
Duration:
0:00:35.969124
Builder:
ka1
Revision:
fscache: Fix out of bound read in long cookie keys (
fa520c47eaa15b9baa8ad66ac18da4a31679693b)
Target:
linus/ppc40x_defconfig/powerpc-gcc4.6
Branch:
linus
Compiler:
powerpc-gcc4.6
(powerpc-linux-gcc (GCC) 4.6.3)
Config:
ppc40x_defconfig
(
download
)
Log:
Download original
Possible warnings (4)
kernel/printk/printk.c:185:16: 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/i2c/i2c-core-base.c:235:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
Full Log
# git rev-parse -q --verify fa520c47eaa15b9baa8ad66ac18da4a31679693b^{commit} fa520c47eaa15b9baa8ad66ac18da4a31679693b already have revision, skipping fetch # git checkout -q -f -B kisskb fa520c47eaa15b9baa8ad66ac18da4a31679693b # git clean -qxdf # < git log -1 # commit fa520c47eaa15b9baa8ad66ac18da4a31679693b # Author: Eric Sandeen <sandeen@redhat.com> # Date: Wed Oct 17 15:23:59 2018 +0100 # # fscache: Fix out of bound read in long cookie keys # # fscache_set_key() can incur an out-of-bounds read, reported by KASAN: # # BUG: KASAN: slab-out-of-bounds in fscache_alloc_cookie+0x5b3/0x680 [fscache] # Read of size 4 at addr ffff88084ff056d4 by task mount.nfs/32615 # # and also reported by syzbot at https://lkml.org/lkml/2018/7/8/236 # # BUG: KASAN: slab-out-of-bounds in fscache_set_key fs/fscache/cookie.c:120 [inline] # BUG: KASAN: slab-out-of-bounds in fscache_alloc_cookie+0x7a9/0x880 fs/fscache/cookie.c:171 # Read of size 4 at addr ffff8801d3cc8bb4 by task syz-executor907/4466 # # This happens for any index_key_len which is not divisible by 4 and is # larger than the size of the inline key, because the code allocates exactly # index_key_len for the key buffer, but the hashing loop is stepping through # it 4 bytes (u32) at a time in the buf[] array. # # Fix this by calculating how many u32 buffers we'll need by using # DIV_ROUND_UP, and then using kcalloc() to allocate a precleared allocation # buffer to hold the index_key, then using that same count as the hashing # index limit. # # Fixes: ec0328e46d6e ("fscache: Maintain a catalogue of allocated cookies") # Reported-by: syzbot+a95b989b2dde8e806af8@syzkaller.appspotmail.com # Signed-off-by: Eric Sandeen <sandeen@redhat.com> # Cc: stable <stable@vger.kernel.org> # Signed-off-by: David Howells <dhowells@redhat.com> # Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < git log --format=%s --max-count=1 fa520c47eaa15b9baa8ad66ac18da4a31679693b # < make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_ppc40x_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- ppc40x_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_ppc40x_defconfig_powerpc 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:185:16: 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:341:21: note: 'pdeo' was declared here /kisskb/src/drivers/i2c/i2c-core-base.c: In function 'i2c_generic_scl_recovery': /kisskb/src/drivers/i2c/i2c-core-base.c:235:5: 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:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:231:19: note: 'i' was declared here INFO: Uncompressed kernel (size 0x5338c4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5338c4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5338c4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5338c4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x523250) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Image Name: Linux-4.19.0-rc8-gfa520c47eaa1 Created: Fri Oct 19 02:16:13 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2599169 Bytes = 2538.25 KiB = 2.48 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-4.19.0-rc8-gfa520c47eaa1 Created: Fri Oct 19 02:16:13 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2628155 Bytes = 2566.56 KiB = 2.51 MiB Load Address: 00600000 Entry Point: 00601350 Image Name: Linux-4.19.0-rc8-gfa520c47eaa1 Created: Fri Oct 19 02:16:13 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2626617 Bytes = 2565.06 KiB = 2.50 MiB Load Address: 00600000 Entry Point: 00601534 Completed OK # rm -rf /kisskb/build/linus_ppc40x_defconfig_powerpc # Build took: 0:00:35.969124
© Michael Ellerman 2006-2018.