On 28 May 2018 at 15:30, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > This is the start of the stable review cycle for the 4.16.13 release. > There are 272 patches in this series, all will be posted as a response > to this one. If anyone has any issues with these being applied, please > let me know. > > Responses should be made by Wed May 30 10:01:02 UTC 2018. > Anything received after that time might be too late. > > The whole patch series can be found in one patch at: > https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.16.13-rc1.gz > or in the git tree and branch at: > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.16.y > and the diffstat can be found below. > > thanks, > > greg k-h > > Davidlohr Bueso <dave@xxxxxxxxxxxx> > ipc/shm: fix shmat() nil address after round-down when remapping > > Davidlohr Bueso <dave@xxxxxxxxxxxx> > Revert "ipc/shm: Fix shmat mmap nil-page protection" Regression on 4.16, 4,14, 4.9 and 4.4 and all devices. Regressions (compared to build v4.16.12) ------------------------------------------------------------------------ On all devices, ltp-syscalls-tests: * cve-2017-5669 ltp-cve-tests: * cve-2017-5669 Test log: ------------ cve-2017-5669.c:62: INFO: Attempting to attach shared memory to null page cve-2017-5669.c:74: INFO: Mapped shared memory to (nil) cve-2017-5669.c:78: FAIL: We have mapped a VM address within the first 64Kb cve-2017-5669.c:84: INFO: Touching shared memory to see if anything strange happens Summary: passed 0 failed 1 skipped 0 warnings 0 The root cause is, "Revert "ipc/shm: Fix shmat mmap nil-page protection"", which explicitly rolls back the original change and mentions that the LTP test case needs to be updated accordingly. This regression initially detected on 4.17.0-rc5-next-20180516 Need more investigation on this issue. Ref: LKFT: next: LTS-4.16,4.14 and 4.9: LTP test case cve-2017-5669 failed on all devices https://bugs.linaro.org/show_bug.cgi?id=3835 https://bugzilla.kernel.org/show_bug.cgi?id=192931 https://patchwork.kernel.org/patch/9552307/ Best regards Naresh Kamboju
