https://bugs.freedesktop.org/show_bug.cgi?id=98372
Bug ID: 98372
Summary: UBSAN in ../drivers/gpu/drm/drm_modes.c:325:49
Product: DRI
Version: unspecified
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM/other
Assignee: dri-devel at lists.freedesktop.org
Reporter: marxin.liska at gmail.com
Running $uname -a
Linux linux-h8g6 4.9.0-rc1-2-syzkaller #1 SMP PREEMPT Mon Oct 17 19:37:55 UTC
2016 (55c3dd5) x86_64 x86_64 x86_64 GNU/Linux
with enabled UBSAN (built by GCC 7.0) in qemu, I reached following error:
[ 48.723720] UBSAN: Undefined behaviour in
../drivers/gpu/drm/drm_modes.c:325:49
[ 48.726943] signed integer overflow:
[ 48.728503] 2240 * 1000000 cannot be represented in type 'int'
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