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From: Peter Maydell <peter.maydell@linaro.org>
To: Akihiko Odaki <akihiko.odaki@daynix.com>
Cc: Viktor Prutyanov <viktor.prutyanov@phystech.edu>, qemu-devel@nongnu.org
Subject: Re: [PATCH v2 08/13] contrib/elf2dmp: Use lduw_le_p() to read PDB
Date: Tue, 5 Mar 2024 13:32:20 +0000	[thread overview]
Message-ID: <CAFEAcA-e8UFY7OFF3tvFE_Uo_i77n5a_qbZQtV4tEBz6ca5Vag@mail.gmail.com> (raw)
In-Reply-To: <20240305-elf2dmp-v2-8-86ff2163ad32@daynix.com>

On Tue, 5 Mar 2024 at 07:36, Akihiko Odaki <akihiko.odaki@daynix.com> wrote:
>
> This resolved UBSan warnings.
>
> Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
> ---
>  contrib/elf2dmp/pdb.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/contrib/elf2dmp/pdb.c b/contrib/elf2dmp/pdb.c
> index 1c5051425185..492aca4434c8 100644
> --- a/contrib/elf2dmp/pdb.c
> +++ b/contrib/elf2dmp/pdb.c
> @@ -19,6 +19,7 @@
>   */
>
>  #include "qemu/osdep.h"
> +#include "qemu/bswap.h"
>
>  #include "pdb.h"
>  #include "err.h"
> @@ -186,7 +187,7 @@ static bool pdb_init_symbols(struct pdb_reader *r)
>
>      r->symbols = symbols;
>
> -    r->segments = *(uint16_t *)((const char *)symbols + sizeof(PDB_SYMBOLS) +
> +    r->segments = lduw_le_p((const char *)symbols + sizeof(PDB_SYMBOLS) +
>              symbols->module_size + symbols->offset_size +
>              symbols->hash_size + symbols->srcmodule_size +
>              symbols->pdbimport_size + symbols->unknown2_size +

Same comment still applies as on v1 version of this patch.

thanks
-- PMM


  reply	other threads:[~2024-03-05 13:32 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-05  7:36 [PATCH v2 00/13] contrib/elf2dmp: Improve robustness Akihiko Odaki
2024-03-05  7:36 ` [PATCH v2 01/13] contrib/elf2dmp: Remove unnecessary err flags Akihiko Odaki
2024-03-05 13:24   ` Peter Maydell
2024-03-05  7:36 ` [PATCH v2 02/13] contrib/elf2dmp: Assume error by default Akihiko Odaki
2024-03-05 13:24   ` Peter Maydell
2024-03-05  7:36 ` [PATCH v2 03/13] contrib/elf2dmp: Continue even contexts are lacking Akihiko Odaki
2024-03-05  7:36 ` [PATCH v2 04/13] contrib/elf2dmp: Conform to the error reporting pattern Akihiko Odaki
2024-03-05 13:28   ` Peter Maydell
2024-03-06  5:00     ` Akihiko Odaki
2024-03-06 12:53       ` Peter Maydell
2024-03-05  7:36 ` [PATCH v2 05/13] contrib/elf2dmp: Always check for PA resolution failure Akihiko Odaki
2024-03-05 13:29   ` Peter Maydell
2024-03-05  7:36 ` [PATCH v2 06/13] contrib/elf2dmp: Always destroy PA space Akihiko Odaki
2024-03-05  7:36 ` [PATCH v2 07/13] contrib/elf2dmp: Ensure segment fits in file Akihiko Odaki
2024-03-05 13:31   ` Peter Maydell
2024-03-05  7:36 ` [PATCH v2 08/13] contrib/elf2dmp: Use lduw_le_p() to read PDB Akihiko Odaki
2024-03-05 13:32   ` Peter Maydell [this message]
2024-03-05  7:36 ` [PATCH v2 09/13] contrib/elf2dmp: Use rol64() to decode Akihiko Odaki
2024-03-05  7:36 ` [PATCH v2 10/13] MAINTAINERS: Add Akihiko Odaki as a elf2dmp reviewer Akihiko Odaki
2024-03-05  7:36 ` [PATCH v2 11/13] contrib/elf2dmp: Build only for little endian host Akihiko Odaki
2024-03-05 13:33   ` Peter Maydell
2024-03-06  5:03     ` Akihiko Odaki
2024-03-05  7:36 ` [PATCH v2 12/13] contrib/elf2dmp: Use GPtrArray Akihiko Odaki
2024-03-05 13:35   ` Peter Maydell
2024-03-05  7:36 ` [PATCH v2 13/13] contrib/elf2dmp: Clamp QEMU note to file size Akihiko Odaki
2024-03-05 13:38   ` Peter Maydell

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