Hi!
From: Linus Torvalds torvalds@linux-foundation.org
[ Upstream commit 02b670c1f88e78f42a6c5aee155c7b26960ca054 ]
...
IOW, I think the only right thing is to remove that horrendously broken code.
The attached patch looks like the ObviouslyCorrect(tm) thing to do.
NOTE! This broken code goes back to this commit in 2011:
4fc3490114bb ("x86-64: Set siginfo and context on vsyscall emulation faults")
.. and back then the reason was to get all the siginfo details right. Honestly, I do not for a moment believe that it's worth getting the siginfo details right here, but part of the commit says:
This fixes issues with UML when vsyscall=emulate... and so my patch to remove this garbage will probably break UML in this situation.
I do not believe that anybody should be running with vsyscall=emulate in 2024 in the first place, much less if you are doing things like UML. But let's see if somebody screams.
Surely this should not go to stable with just 14days in mainline? We don't want stable users to scream.
Best regards, Pavel