tree 8a43371306b1dc833b2aa319efa2d083730cb9bc
parent 357efc96bfd432e7d842755342af9746174a3e39
author Mikulas Patocka <mpatocka@redhat.com> 1704812276 +0100
committer He Gao <hegao@google.com> 1709083370 +0000

dm: limit the number of targets and parameter size area

commit bd504bcfec41a503b32054da5472904b404341a4 upstream.

The kvmalloc function fails with a warning if the size is larger than
INT_MAX. The warning was triggered by a syscall testing robot.

In order to avoid the warning, this commit limits the number of targets to
1048576 and the size of the parameter area to 1073741824.

BUG=b/322957905
TEST=presubmit
RELEASE_NOTE=Fixed CVE-2024-23851 in the Linux kernel.

Change-Id: I10e54d17233270701281d0d37eaf2b854bab7889
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/65690
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Michael Kochera <kochera@google.com>