Buildresult: linus/simpad_defconfig/arm-gcc4.6 built on Dec 17 2019, 09:01

kisskb

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Status:	OK
Date/Time:	Dec 17 2019, 09:01
Duration:	0:00:36.693324
Builder:	ka2
Revision:	iommu: fix KASAN use-after-free in iommu_insert_resv_region (`4c80ba392bf603d468ea827d902f8e7b2505fbf4)`
Target:	linus/simpad_defconfig/arm-gcc4.6
Branch:	linus
Compiler:	arm-gcc4.6 (arm-unknown-linux-gnueabi-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	simpad_defconfig (download)
Log:	Download original Possible warnings (4) kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] fs/ext4/extents.c:5054:23: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] WARNING: vmlinux.o(.text.unlikely+0x650): Section mismatch in reference from the function free_memmap() to the function .meminit.text:memblock_free() Full Log # git rev-parse -q --verify 4c80ba392bf603d468ea827d902f8e7b2505fbf4^{commit} 4c80ba392bf603d468ea827d902f8e7b2505fbf4 already have revision, skipping fetch # git checkout -q -f -B kisskb 4c80ba392bf603d468ea827d902f8e7b2505fbf4 # git clean -qxdf # < git log -1 # commit 4c80ba392bf603d468ea827d902f8e7b2505fbf4 # Author: Eric Auger <eric.auger@redhat.com> # Date: Tue Nov 26 18:54:13 2019 +0100 # # iommu: fix KASAN use-after-free in iommu_insert_resv_region # # In case the new region gets merged into another one, the nr list node is # freed. Checking its type while completing the merge algorithm leads to # a use-after-free. Use new->type instead. # # Fixes: 4dbd258ff63e ("iommu: Revisit iommu_insert_resv_region() implementation") # Signed-off-by: Eric Auger <eric.auger@redhat.com> # Reported-by: Qian Cai <cai@lca.pw> # Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com> # Cc: Stable <stable@vger.kernel.org> #v5.3+ # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-ld --version # < git log --format=%s --max-count=1 4c80ba392bf603d468ea827d902f8e7b2505fbf4 # < make -s -j 48 ARCH=arm O=/kisskb/build/linus_simpad_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi- simpad_defconfig # make -s -j 48 ARCH=arm O=/kisskb/build/linus_simpad_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:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/ext4/extents.c: In function 'ext4_convert_unwritten_io_end_vec': /kisskb/src/fs/ext4/extents.c:5054:23: warning: 'ret' 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 WARNING: vmlinux.o(.text.unlikely+0x650): Section mismatch in reference from the function free_memmap() to the function .meminit.text:memblock_free() The function free_memmap() references the function __meminit memblock_free(). This is often because free_memmap lacks a __meminit annotation or the annotation of memblock_free is wrong. Completed OK # rm -rf /kisskb/build/linus_simpad_defconfig_arm # Build took: 0:00:36.693324

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