linux-kernel - [GIT PULL] x86/urgent for 6.1-rc6

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Message-ID: <Y3oao37SUu9tluFY@zn.tnic>
Date:   Sun, 20 Nov 2022 13:16:35 +0100
From:   Borislav Petkov <bp@...e.de>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     x86-ml <x86@...nel.org>, lkml <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] x86/urgent for 6.1-rc6

Hi Linus,

please pull two urgent x86 fixes for 6.1.

Thx.

---

The following changes since commit f0c4d9fc9cc9462659728d168387191387e903cc:

  Linux 6.1-rc4 (2022-11-06 15:07:11 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_urgent_for_v6.1_rc6

for you to fetch changes up to 36b038791e1e2baea892e9276588815fd14894b4:

  x86/fpu: Drop fpregs lock before inheriting FPU permissions (2022-11-10 16:57:38 +0100)

----------------------------------------------------------------
- Do not hold fpregs lock when inheriting FPU permissions because the
fpregs lock disables preemption on RT but fpu_inherit_perms() does
spin_lock_irq(), which, on RT, uses rtmutexes and they need to be
preemptible.

- Check the page offset and the length of the data supplied by userspace
for overflow when specifying a set of pages to add to an SGX enclave

----------------------------------------------------------------
Borys Popławski (1):
      x86/sgx: Add overflow check in sgx_validate_offset_length()

Mel Gorman (1):
      x86/fpu: Drop fpregs lock before inheriting FPU permissions

 arch/x86/kernel/cpu/sgx/ioctl.c | 3 +++
 arch/x86/kernel/fpu/core.c      | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

-- 
Regards/Gruss,
    Boris.

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