Date:   Mon, 27 Dec 2021 19:18:54 -0700
From:   Nathan Chancellor <nathan@kernel.org>
To:     Guo Ren <guoren@kernel.org>
Cc:     "Eric W. Biederman" <ebiederm@xmission.com>,
        Brian Cain <bcain@codeaurora.org>,
        Yoshinori Sato <ysato@users.sourceforge.jp>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 3/3] csky: Fix function name in csky_alignment() and die()
Message-ID: <Ycp0DsB68GWQ1eD6@archlinux-ax161>
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Hi Guo,

On Tue, Dec 28, 2021 at 10:01:11AM +0800, Guo Ren wrote:
> Hi Nathan & Eric,
> 
> Seems Eric's patch is not in Linus tree, right? Abandoned?
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0e25498f8cd43c1b5aa327f373dd094e9a006da7

Correct, Eric's patch is not in Linus' tree. It is in his
signal-for-v5.17 branch, which is currently flowing into -next:

https://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git/log/?h=signal-for-v5.17

Apologies for not spelling this out in the cover letter. Aside from a
review/ack/test, there should not be anything else that you need to do.

Cheers,
Nathan

> On Tue, Dec 28, 2021 at 9:53 AM Guo Ren <guoren@kernel.org> wrote:
> >
> > I would pick up csky's & make pull-request immediately.
> >
> > On Tue, Dec 28, 2021 at 9:47 AM Guo Ren <guoren@kernel.org> wrote:
> > >
> > > Sorry mm/fault.c is okay.
> > >
> > > Reviewed-by: Guo Ren <guoren@kernel.org>
> > >
> > > On Tue, Dec 28, 2021 at 9:46 AM Guo Ren <guoren@kernel.org> wrote:
> > > >
> > > > Hi Nathan,
> > > >
> > > > Three wrong parts in csky! you forgot mm/fault.c.
> > > >
> > > > Eric's patch seems not to cc me? Why arm64 is correct, csky is wrong. -_*!
> > > >
> > > > here is the wrong patch part:
> > > > diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
> > > > index 9ae24e3b72be1..11a28cace2d25 100644
> > > > --- a/arch/arm64/mm/fault.c
> > > > +++ b/arch/arm64/mm/fault.c
> > > > @@ -302,7 +302,7 @@ static void die_kernel_fault(const char *msg,
> > > > unsigned long addr,
> > > > show_pte(addr);
> > > > die("Oops", regs, esr);
> > > > bust_spinlocks(0);
> > > > - do_exit(SIGKILL);
> > > > + make_task_dead(SIGKILL);
> > > > }
> > > > #ifdef CONFIG_KASAN_HW_TAGS
> > > > diff --git a/arch/csky/abiv1/alignment.c b/arch/csky/abiv1/alignment.c
> > > > index cb2a0d94a144d..5e2fb45d605cf 100644
> > > > --- a/arch/csky/abiv1/alignment.c
> > > > +++ b/arch/csky/abiv1/alignment.c
> > > > @@ -294,7 +294,7 @@ bad_area:
> > > > __func__, opcode, rz, rx, imm, addr);
> > > > show_regs(regs);
> > > > bust_spinlocks(0);
> > > > - do_exit(SIGKILL);
> > > > + make_dead_task(SIGKILL);
> > > > }
> > > > force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *)addr);
> > > > diff --git a/arch/csky/kernel/traps.c b/arch/csky/kernel/traps.c
> > > > index e5fbf8653a215..88a47035b9256 100644
> > > > --- a/arch/csky/kernel/traps.c
> > > > +++ b/arch/csky/kernel/traps.c
> > > > @@ -109,7 +109,7 @@ void die(struct pt_regs *regs, const char *str)
> > > > if (panic_on_oops)
> > > > panic("Fatal exception");
> > > > if (ret != NOTIFY_STOP)
> > > > - do_exit(SIGSEGV);
> > > > + make_dead_task(SIGSEGV);
> > > > }
> > > > void do_trap(struct pt_regs *regs, int signo, int code, unsigned long addr)
> > > > diff --git a/arch/csky/mm/fault.c b/arch/csky/mm/fault.c
> > > > index 466ad949818a6..7215a46b6b8eb 100644
> > > > --- a/arch/csky/mm/fault.c
> > > > +++ b/arch/csky/mm/fault.c
> > > > @@ -67,7 +67,7 @@ static inline void no_context(struct pt_regs *regs,
> > > > unsigned long addr)
> > > > pr_alert("Unable to handle kernel paging request at virtual "
> > > > "addr 0x%08lx, pc: 0x%08lx\n", addr, regs->pc);
> > > > die(regs, "Oops");
> > > > - do_exit(SIGKILL);
> > > > + make_task_dead(SIGKILL);
> > > > }
> > > >
> > > > On Tue, Dec 28, 2021 at 2:50 AM Nathan Chancellor <nathan@kernel.org> wrote:
> > > > >
> > > > > When building ARCH=csky defconfig:
> > > > >
> > > > > arch/csky/kernel/traps.c: In function 'die':
> > > > > arch/csky/kernel/traps.c:112:17: error: implicit declaration of function
> > > > > 'make_dead_task' [-Werror=implicit-function-declaration]
> > > > >   112 |                 make_dead_task(SIGSEGV);
> > > > >       |                 ^~~~~~~~~~~~~~
> > > > >
> > > > > The function's name is make_task_dead(), change it so there is no more
> > > > > build error.
> > > > >
> > > > > Fixes: 0e25498f8cd4 ("exit: Add and use make_task_dead.")
> > > > > Signed-off-by: Nathan Chancellor <nathan@kernel.org>
> > > > > ---
> > > > >  arch/csky/abiv1/alignment.c | 2 +-
> > > > >  arch/csky/kernel/traps.c    | 2 +-
> > > > >  2 files changed, 2 insertions(+), 2 deletions(-)
> > > > >
> > > > > diff --git a/arch/csky/abiv1/alignment.c b/arch/csky/abiv1/alignment.c
> > > > > index 5e2fb45d605c..2df115d0e210 100644
> > > > > --- a/arch/csky/abiv1/alignment.c
> > > > > +++ b/arch/csky/abiv1/alignment.c
> > > > > @@ -294,7 +294,7 @@ void csky_alignment(struct pt_regs *regs)
> > > > >                                 __func__, opcode, rz, rx, imm, addr);
> > > > >                 show_regs(regs);
> > > > >                 bust_spinlocks(0);
> > > > > -               make_dead_task(SIGKILL);
> > > > > +               make_task_dead(SIGKILL);
> > > > >         }
> > > > >
> > > > >         force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *)addr);
> > > > > diff --git a/arch/csky/kernel/traps.c b/arch/csky/kernel/traps.c
> > > > > index 88a47035b925..50481d12d236 100644
> > > > > --- a/arch/csky/kernel/traps.c
> > > > > +++ b/arch/csky/kernel/traps.c
> > > > > @@ -109,7 +109,7 @@ void die(struct pt_regs *regs, const char *str)
> > > > >         if (panic_on_oops)
> > > > >                 panic("Fatal exception");
> > > > >         if (ret != NOTIFY_STOP)
> > > > > -               make_dead_task(SIGSEGV);
> > > > > +               make_task_dead(SIGSEGV);
> > > > >  }
> > > > >
> > > > >  void do_trap(struct pt_regs *regs, int signo, int code, unsigned long addr)
> > > > > --
> > > > > 2.34.1
> > > > >
> > > >
> > > >
> > > > --
> > > > Best Regards
> > > >  Guo Ren
> > > >
> > > > ML: https://lore.kernel.org/linux-csky/
> > >
> > >
> > >
> > > --
> > > Best Regards
> > >  Guo Ren
> > >
> > > ML: https://lore.kernel.org/linux-csky/
> >
> >
> >
> > --
> > Best Regards
> >  Guo Ren
> >
> > ML: https://lore.kernel.org/linux-csky/
> 
> 
> 
> -- 
> Best Regards
>  Guo Ren
> 
> ML: https://lore.kernel.org/linux-csky/