On Sat, Nov 20, 2021 at 09:36:55PM +0530, Naresh Kamboju wrote: > + Peter Zijlstra > + Thomas Gleixner > + Borislav Petkov > + Ondrej Zary > > > On Sat, 20 Nov 2021 at 20:57, Daniel Díaz <daniel.diaz@xxxxxxxxxx> wrote: > > > > Hello! > > > > On 11/19/21 11:37 AM, Greg Kroah-Hartman wrote: > > > This is the start of the stable review cycle for the 5.10.81 release. > > > There are 21 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 Sun, 21 Nov 2021 17:14:35 +0000. > > > 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/v5.x/stable-review/patch-5.10.81-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-5.10.y > > > and the diffstat can be found below. > > > > > > thanks, > > > > > > greg k-h > > > > > > ------------- > > > Pseudo-Shortlog of commits: > > > > > > Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > > > Linux 5.10.81-rc1 > > [...]> Peter Zijlstra <peterz@xxxxxxxxxxxxx> > > > x86/iopl: Fake iopl(3) CLI/STI usage > > This is due to ^ new kernel code + old test case (Test case needs to > be updated) > > > [...] > > > > Results from Linaro's test farm. > > Regressions found on x86_64 and i386, on iopl. Here's an excerpt of the selftest: > > > > [ 0.000000] Linux version 5.10.81-rc1 (oe-user@oe-host) (x86_64-linaro-linux-gcc (GCC) 7.3.0, GNU ld (GNU Binutils) 2.30.0.20180208) #1 SMP Fri Nov 19 19:48:55 UTC 2021 > > [...] > > [ 170.351838] traps: iopl_64[2769] attempts to use CLI/STI, pretending it's a NOP, ip:400dde in iopl_64[400000+2000] > > [...] > > # selftests: x86: iopl_64 > > # [FAIL] CLI worked > > # [FAIL] STI worked > > This failure was detected on linux next and the later test case has been fixed. > The Following patch could fix this problem across 5.10, 5.14 and 5.15. > > Patch details, > --- > selftests/x86/iopl: Adjust to the faked iopl CLI/STI usage > > Commit in Fixes changed the iopl emulation to not #GP on CLI and STI > because it would break some insane luserspace tools which would toggle > interrupts. > > The corresponding selftest would rely on the fact that executing CLI/STI > would trigger a #GP and thus detect it this way but since that #GP is > not happening anymore, the detection is now wrong too. > > Extend the test to actually look at the IF flag and whether executing > those insns had any effect on it. The STI detection needs to have the > fact that interrupts were previously disabled, passed in so do that from > the previous CLI test, i.e., STI test needs to follow a previous CLI one > for it to make sense. > > Fixes: b968e84b509d ("x86/iopl: Fake iopl(3) CLI/STI usage") > Suggested-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > Signed-off-by: Borislav Petkov <bp@xxxxxxx> > Acked-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > Link: https://lore.kernel.org/r/20211030083939.13073-1-bp@xxxxxxxxx Now queued up, thanks, greg k-h
