Buildresult: linus/xtensa-defconfig/xtensa-gcc11 built on Aug 19 2022, 03:54

kisskb

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Status:	OK
Date/Time:	Aug 19 2022, 03:54
Duration:	0:00:39.642578
Builder:	ka1
Revision:	tee: add overflow check in register_shm_helper() (`573ae4f13f630d6660008f1974c0a8a29c30e18a)`
Target:	linus/xtensa-defconfig/xtensa-gcc11
Branch:	linus
Compiler:	xtensa-gcc11 (xtensa-linux-gcc (GCC) 11.1.0 / GNU ld (GNU Binutils) 2.36.1)
Config:	defconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify 573ae4f13f630d6660008f1974c0a8a29c30e18a^{commit} 573ae4f13f630d6660008f1974c0a8a29c30e18a already have revision, skipping fetch # git checkout -q -f -B kisskb 573ae4f13f630d6660008f1974c0a8a29c30e18a # git clean -qxdf # < git log -1 # commit 573ae4f13f630d6660008f1974c0a8a29c30e18a # Author: Jens Wiklander <jens.wiklander@linaro.org> # Date: Thu Aug 18 13:08:59 2022 +0200 # # tee: add overflow check in register_shm_helper() # # With special lengths supplied by user space, register_shm_helper() has # an integer overflow when calculating the number of pages covered by a # supplied user space memory region. # # This causes internal_get_user_pages_fast() a helper function of # pin_user_pages_fast() to do a NULL pointer dereference: # # Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010 # Modules linked in: # CPU: 1 PID: 173 Comm: optee_example_a Not tainted 5.19.0 #11 # Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015 # pc : internal_get_user_pages_fast+0x474/0xa80 # Call trace: # internal_get_user_pages_fast+0x474/0xa80 # pin_user_pages_fast+0x24/0x4c # register_shm_helper+0x194/0x330 # tee_shm_register_user_buf+0x78/0x120 # tee_ioctl+0xd0/0x11a0 # __arm64_sys_ioctl+0xa8/0xec # invoke_syscall+0x48/0x114 # # Fix this by adding an an explicit call to access_ok() in # tee_shm_register_user_buf() to catch an invalid user space address # early. # # Fixes: 033ddf12bcf5 ("tee: add register user memory") # Cc: stable@vger.kernel.org # Reported-by: Nimish Mishra <neelam.nimish@gmail.com> # Reported-by: Anirban Chakraborty <ch.anirban00727@gmail.com> # Reported-by: Debdeep Mukhopadhyay <debdeep.mukhopadhyay@gmail.com> # Suggested-by: Jerome Forissier <jerome.forissier@linaro.org> # Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/xtensa-linux/bin/xtensa-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/xtensa-linux/bin/xtensa-linux-ld --version # < git log --format=%s --max-count=1 573ae4f13f630d6660008f1974c0a8a29c30e18a # < make -s -j 48 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/xtensa-linux/bin/xtensa-linux- defconfig # < make -s -j 48 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/xtensa-linux/bin/xtensa-linux- help # make -s -j 48 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/xtensa-linux/bin/xtensa-linux- olddefconfig # make -s -j 48 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/xtensa-linux/bin/xtensa-linux- Completed OK # rm -rf /kisskb/build/linus_xtensa-defconfig_xtensa-gcc11 # Build took: 0:00:39.642578

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