On Wed, Apr 3, 2024 at 9:26 AM Ingo Molnar <mingo@xxxxxxxxxx> wrote: > > > * patchwork-bot+netdevbpf@xxxxxxxxxx <patchwork-bot+netdevbpf@xxxxxxxxxx> wrote: > > > Hello: > > > > This series was applied to bpf/bpf.git (master) > > by Alexei Starovoitov <ast@xxxxxxxxxx>: > > > > On Mon, 1 Apr 2024 20:55:28 +0200 you wrote: > > > From: Joan Bruguera Micó <joanbrugueram@xxxxxxxxx> > > > > > > Fixes two issues that cause kernels panic when using the BPF JIT with > > > the call depth tracking / stuffing mitigation for Skylake processors > > > (`retbleed=stuff`). Both issues can be triggered by running simple > > > BPF programs (e.g. running the test suite should trigger both). > > > > > > [...] > > > > Here is the summary with links: > > - [RESEND,bpf,v2,1/2] x86/bpf: Fix IP after emitting call depth accounting > > https://git.kernel.org/bpf/bpf/c/9d98aa088386 > > - [RESEND,bpf,v2,2/2] x86/bpf: Fix IP for relocating call depth accounting > > https://git.kernel.org/bpf/bpf/c/6a537453000a > > Just wondering, which kernel version is this targeted for? The whole series is intended for the current mainline (v6.9), this is why it is developed against the bpf (*not* bpf-next) branch. Please note that the kernel panics with retbleed=stuff even without %rip-relative changes (patch 1/2 above) [1], so patch 1/2 should be backported to stable branches. [1] https://lore.kernel.org/lkml/20230105214922.250473-1-joanbrugueram@xxxxxxxxx/ Uros. > The bug is upstream as well, so a fix needs to be sent to Linus. > > I can pick all of this up into tip:x86/urgent, if that accelerates > things. > > Thanks, > > Ingo
