On Wed, Jul 5, 2023 at 1:38 AM Michael Schmitz schmitzmic@gmail.com 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@xenosoft.de Fixes: b6f3f28f60 ("block: add overflow checks for Amiga partition support") Message-ID: 024ce4fa-cc6d-50a2-9aae-3701d0ebf668@xenosoft.de
Please drop this line.
Cc: stable@vger.kernel.org # 5.2 Link: https://lore.kernel.org/r/024ce4fa-cc6d-50a2-9aae-3701d0ebf668@xenosoft.de Signed-off-by: Michael Schmitz schmitzmic@gmail.com Reviewed-by: Martin Steigerwald martin@lichtvoll.de Tested-by: Christian Zigotzky chzigotzky@xenosoft.de
Reviewed-by: Geert Uytterhoeven geert@linux-m68k.org
Gr{oetje,eeting}s,
Geert