Messages in this thread | | | Date | Wed, 21 Feb 2024 11:29:38 +0000 | From | "Russell King (Oracle)" <> | Subject | Re: [PATCH] ARM: fault: Implement copy_from_kernel_nofault_allowed() |
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On Tue, Feb 20, 2024 at 10:39:15PM -0800, Kees Cook wrote: > On Mon, Jan 22, 2024 at 05:12:38PM -0800, Kees Cook wrote: > > Under PAN emulation when dumping backtraces from things like the > > LKDTM EXEC_USERSPACE test[1], a double fault (which would hang a CPU) > > would happen because of dump_instr() attempting to read a userspace > > address. Make sure copy_from_kernel_nofault() does not attempt this > > any more. > > > > Reported-by: Mark Brown <broonie@kernel.org> > > Link: https://lore.kernel.org/all/202401181125.D48DCB4C@keescook/ [1] > > Suggested-by: "Russell King (Oracle)" <linux@armlinux.org.uk> > > Cc: Russell King <linux@armlinux.org.uk> > > Cc: Ard Biesheuvel <ardb@kernel.org> > > Cc: Wang Kefeng <wangkefeng.wang@huawei.com> > > Cc: Andrew Morton <akpm@linux-foundation.org> > > Cc: Ben Hutchings <ben@decadent.org.uk> > > Cc: linux-arm-kernel@lists.infradead.org > > Signed-off-by: Kees Cook <keescook@chromium.org> > > Russell, do you mind if I carry in my tree the 3 ARM patches I sent? > They're mostly pretty trivial, and they've been in "Incoming"[1] for 2 > weeks but haven't shown up in -next yet. I'd really like them to get > some soak time, and for them to reach the v6.9 merge window in time.
They can't show up in -next at the moment because the machine that hosts my git tree is being moved between data centres. This was originally flagged as a same-day (Tuesday) move, then next day, then it'll be back online on Saturday. That's the last update that we've had.
As I don't believe my GPG key has the necessary signatures on, I don't believe I can get a kernel.org account. I'm not even sure whether my gpg key is even correct for that - and at the moment I just glaze over reading the kernel.org gpg documentation.
-- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
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