On Wed, Jul 5, 2023 at 1:38 AM Michael Schmitz <schmitzmic@xxxxxxxxx> wrote:
Making 'blk' sector_t (i.e. 64 bit if LBD support is active)
fails the 'blk>0' test in the partition block loop if a
value of (signed int) -1 is used to mark the end of the
partition block list.
This bug was introduced in patch 3 of my prior Amiga partition
support fixes series, and spotted by Christian Zigotzky when
testing the latest block updates.
Explicitly cast 'blk' to signed int to allow use of -1 to
terminate the partition block linked list.
Reported-by: Christian Zigotzky <chzigotzky@xxxxxxxxxxx>
Fixes: b6f3f28f60 ("block: add overflow checks for Amiga partition support")
Message-ID: 024ce4fa-cc6d-50a2-9aae-3701d0ebf668@xxxxxxxxxxx
Please drop this line.
Cc: <stable@xxxxxxxxxxxxxxx> # 5.2
Link: https://lore.kernel.org/r/024ce4fa-cc6d-50a2-9aae-3701d0ebf668@xxxxxxxxxxx
Signed-off-by: Michael Schmitz <schmitzmic@xxxxxxxxx>
Reviewed-by: Martin Steigerwald <martin@xxxxxxxxxxxx>
Tested-by: Christian Zigotzky <chzigotzky@xxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
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
