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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-23 11:24:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-23 11:24:12 -0700 |
| commit | f10f0481a5b58f8986f626d43f8534472f7776c2 (patch) | |
| tree | 2022343dd7e0ec49fd61c8290625d88daa4b011e /kernel/entry/common.c | |
| parent | 9bc62afe03afdf33904f5e784e1ad68c50ff00bb (diff) | |
| parent | 2da4a23599c263bd4a7658c2fe561cb3a73ea6ae (diff) | |
Merge tag 'for-linus-rseq' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull rseq fixes from Paolo Bonzini:
"A fix for a bug with restartable sequences and KVM.
KVM's handling of TIF_NOTIFY_RESUME, e.g. for task migration, clears
the flag without informing rseq and leads to stale data in userspace's
rseq struct"
* tag 'for-linus-rseq' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: selftests: Remove __NR_userfaultfd syscall fallback
KVM: selftests: Add a test for KVM_RUN+rseq to detect task migration bugs
tools: Move x86 syscall number fallbacks to .../uapi/
entry: rseq: Call rseq_handle_notify_resume() in tracehook_notify_resume()
KVM: rseq: Update rseq when processing NOTIFY_RESUME on xfer to KVM guest
Diffstat (limited to 'kernel/entry/common.c')
| -rw-r--r-- | kernel/entry/common.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/entry/common.c b/kernel/entry/common.c index bf16395b9e13..d5a61d565ad5 100644 --- a/kernel/entry/common.c +++ b/kernel/entry/common.c @@ -171,10 +171,8 @@ static unsigned long exit_to_user_mode_loop(struct pt_regs *regs, if (ti_work & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL)) handle_signal_work(regs, ti_work); - if (ti_work & _TIF_NOTIFY_RESUME) { + if (ti_work & _TIF_NOTIFY_RESUME) tracehook_notify_resume(regs); - rseq_handle_notify_resume(NULL, regs); - } /* Architecture specific TIF work */ arch_exit_to_user_mode_work(regs, ti_work); |