From: Kevin Wolf <kwolf@redhat.com>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-devel@nongnu.org,
"Philippe Mathieu-Daudé" <philmd@linaro.org>,
"John Snow" <jsnow@redhat.com>, "Stefan Weil" <sw@weilnetz.de>,
"Richard W.M. Jones" <rjones@redhat.com>,
"Hanna Reitz" <hreitz@redhat.com>,
qemu-block@nongnu.org
Subject: Re: [PATCH 5/7] hw/block/fdc-isa: Assert that isa_fdc_get_drive_max_chs() found something
Date: Wed, 31 Jul 2024 16:54:29 +0200 [thread overview]
Message-ID: <ZqpQJb_O7LMEPICS@redhat.com> (raw)
In-Reply-To: <20240731143617.3391947-6-peter.maydell@linaro.org>
Am 31.07.2024 um 16:36 hat Peter Maydell geschrieben:
> Coverity complains about an overflow in isa_fdc_get_drive_max_chs()
> that can happen if the loop over fd_formats never finds a match,
> because we initialize *maxc to 0 and then at the end of the
> function decrement it.
>
> This can't ever actually happen because fd_formats has at least
> one entry for each FloppyDriveType, so we must at least once
> find a match and update *maxc, *maxh and *maxs. Assert that we
> did find a match, which should keep Coverity happy and will also
> detect possible bugs in the data in fd_formats.
>
> Resolves: Coverity CID 1547663
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
next prev parent reply other threads:[~2024-07-31 14:55 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-31 14:36 [PATCH 0/7] block: Miscellaneous minor Coverity fixes Peter Maydell
2024-07-31 14:36 ` [PATCH 1/7] block/vdi.c: Avoid potential overflow when calculating size of write Peter Maydell
2024-07-31 14:59 ` Kevin Wolf
2024-07-31 15:05 ` Stefan Weil via
2024-07-31 14:36 ` [PATCH 2/7] block/gluster: Use g_autofree for string in qemu_gluster_parse_json() Peter Maydell
2024-07-31 15:04 ` Kevin Wolf
2024-07-31 20:54 ` Philippe Mathieu-Daudé
2024-07-31 14:36 ` [PATCH 3/7] hw/block/pflash_cfi01: Don't decrement pfl->counter below 0 Peter Maydell
2024-07-31 15:07 ` Kevin Wolf
2024-08-05 18:20 ` Philippe Mathieu-Daudé
2024-07-31 14:36 ` [PATCH 4/7] hw/ide/atapi: Be explicit that assigning to s->lcyl truncates Peter Maydell
2024-07-31 14:46 ` Markus Armbruster
2024-07-31 14:49 ` Peter Maydell
2024-07-31 14:57 ` Kevin Wolf
2024-07-31 14:36 ` [PATCH 5/7] hw/block/fdc-isa: Assert that isa_fdc_get_drive_max_chs() found something Peter Maydell
2024-07-31 14:50 ` Markus Armbruster
2024-07-31 14:54 ` Kevin Wolf [this message]
2024-07-31 20:56 ` Philippe Mathieu-Daudé
2024-07-31 14:36 ` [PATCH 6/7] hw/ide/pci.c: Remove dead code from bmdma_prepare_buf() Peter Maydell
2024-07-31 15:13 ` Kevin Wolf
2024-07-31 21:02 ` Philippe Mathieu-Daudé
2024-07-31 14:36 ` [PATCH 7/7] block/ssh.c: Don't double-check that characters are hex digits Peter Maydell
2024-07-31 15:21 ` Kevin Wolf
2024-07-31 15:26 ` Peter Maydell
2024-08-05 18:21 ` [PATCH 0/7] block: Miscellaneous minor Coverity fixes Philippe Mathieu-Daudé
2024-08-06 8:11 ` Philippe Mathieu-Daudé
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