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From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-arch@vger.kernel.org, linux-alpha@vger.kernel.org,
	linux-ia64@vger.kernel.org, linux-hexagon@vger.kernel.org,
	linux-m68k@lists.linux-m68k.org, Michal Simek <monstr@monstr.eu>,
	Dinh Nguyen <dinguyen@kernel.org>,
	openrisc@lists.librecores.org, linux-parisc@vger.kernel.org,
	linux-riscv@lists.infradead.org, sparclinux@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 04/10] m68k: fix livelock in uaccess
Date: Mon, 6 Feb 2023 13:08:59 +0100	[thread overview]
Message-ID: <CAMuHMdWcNcn7R6MMeg51SUkmpZZ+HpdsMtiOE55EbQ1coc10AQ@mail.gmail.com> (raw)
In-Reply-To: <Y9l0aBPUEpf1bci9@ZenIV>

On Tue, Jan 31, 2023 at 9:06 PM Al Viro <viro@zeniv.linux.org.uk> wrote:
> m68k equivalent of 26178ec11ef3 "x86: mm: consolidate VM_FAULT_RETRY handling"
> If e.g. get_user() triggers a page fault and a fatal signal is caught, we might
> end up with handle_mm_fault() returning VM_FAULT_RETRY and not doing anything
> to page tables.  In such case we must *not* return to the faulting insn -
> that would repeat the entire thing without making any progress; what we need
> instead is to treat that as failed (user) memory access.
>
> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

  parent reply	other threads:[~2023-02-06 12:10 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-31 20:02 [RFC][PATCHSET] VM_FAULT_RETRY fixes Al Viro
2023-01-31 20:03 ` [PATCH 01/10] alpha: fix livelock in uaccess Al Viro
2023-03-07  0:48   ` patchwork-bot+linux-riscv
2023-01-31 20:03 ` [PATCH 02/10] hexagon: " Al Viro
2023-02-10  2:59   ` Brian Cain
2023-01-31 20:04 ` [PATCH 03/10] ia64: " Al Viro
2023-01-31 20:04 ` [PATCH 04/10] m68k: " Al Viro
2023-02-05  6:18   ` Finn Thain
2023-02-05 18:51     ` Linus Torvalds
2023-02-07  3:07       ` Finn Thain
2023-02-05 20:39     ` Al Viro
2023-02-05 20:41       ` Linus Torvalds
2023-02-06 12:08   ` Geert Uytterhoeven [this message]
2023-01-31 20:05 ` [PATCH 05/10] microblaze: " Al Viro
2023-01-31 20:05 ` [PATCH 06/10] nios2: " Al Viro
2023-01-31 20:06 ` [PATCH 07/10] openrisc: " Al Viro
2023-01-31 20:06 ` [PATCH 08/10] parisc: " Al Viro
2023-02-06 16:58   ` Helge Deller
2023-02-28 17:34     ` Al Viro
2023-02-28 18:26       ` Helge Deller
2023-02-28 19:14         ` Al Viro
2023-02-28 19:32           ` Helge Deller
2023-02-28 20:00             ` Helge Deller
2023-02-28 20:22               ` Helge Deller
2023-02-28 22:57                 ` Al Viro
2023-03-01  4:00                   ` Helge Deller
2023-03-02 17:53                     ` Al Viro
2023-02-28 15:22   ` Guenter Roeck
2023-02-28 19:18     ` Michael Schmitz
2023-01-31 20:06 ` [PATCH 09/10] riscv: " Al Viro
2023-02-06 20:06   ` Björn Töpel
2023-02-07 16:11   ` Geert Uytterhoeven
2023-01-31 20:07 ` [PATCH 10/10] sparc: " Al Viro
2023-01-31 20:24 ` [RFC][PATCHSET] VM_FAULT_RETRY fixes Linus Torvalds
2023-01-31 21:10   ` Al Viro
2023-01-31 21:19     ` Linus Torvalds
2023-01-31 21:49       ` Al Viro
2023-02-01  0:00         ` Linus Torvalds
2023-02-01 19:48           ` Peter Xu
2023-02-01 22:18             ` Al Viro
2023-02-02  0:57               ` Al Viro
2023-02-02 22:56               ` Peter Xu
2023-02-04  0:26                 ` Al Viro
2023-02-05  5:10                   ` Al Viro
2023-02-04  0:47         ` [loongarch oddities] " Al Viro
2023-02-01  8:21       ` Helge Deller
2023-02-01 19:51         ` Linus Torvalds
2023-02-02  6:58       ` Al Viro
2023-02-02  8:54         ` Michael Cree
2023-02-02  9:56           ` John Paul Adrian Glaubitz
2023-02-02 15:20           ` Al Viro
2023-02-02 20:20             ` Al Viro
2023-02-02 20:34         ` Linus Torvalds
2023-02-01 10:50 ` Mark Rutland
2023-02-06 12:08   ` Geert Uytterhoeven

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