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BUG: KMSAN: uninit-value in drm_mode_setcrtc+0x1ad3/0x24a0 drivers/gpu/drm/drm_crtc.c:896
 drm_mode_setcrtc+0x1ad3/0x24a0 drivers/gpu/drm/drm_crtc.c:896
 drm_ioctl_kernel+0x5ae/0x730 drivers/gpu/drm/drm_ioctl.c:788
 drm_ioctl+0xd12/0x1590 drivers/gpu/drm/drm_ioctl.c:891
 drm_compat_ioctl+0x499/0x660
 __do_compat_sys_ioctl fs/ioctl.c:968 [inline]
 __se_compat_sys_ioctl+0x78f/0xfd0 fs/ioctl.c:910
 __ia32_compat_sys_ioctl+0x93/0xd0 fs/ioctl.c:910
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Uninit was created at:
 slab_post_alloc_hook+0x12d/0xb60 mm/slab.h:716
 slab_alloc_node mm/slub.c:3451 [inline]
 __kmem_cache_alloc_node+0x4ff/0x8b0 mm/slub.c:3490
 __do_kmalloc_node mm/slab_common.c:965 [inline]
 __kmalloc+0x121/0x3c0 mm/slab_common.c:979
 kmalloc_array include/linux/slab.h:596 [inline]
 drm_mode_setcrtc+0x1dba/0x24a0 drivers/gpu/drm/drm_crtc.c:846
 drm_ioctl_kernel+0x5ae/0x730 drivers/gpu/drm/drm_ioctl.c:788
 drm_ioctl+0xd12/0x1590 drivers/gpu/drm/drm_ioctl.c:891
 drm_compat_ioctl+0x499/0x660
 __do_compat_sys_ioctl fs/ioctl.c:968 [inline]
 __se_compat_sys_ioctl+0x78f/0xfd0 fs/ioctl.c:910
 __ia32_compat_sys_ioctl+0x93/0xd0 fs/ioctl.c:910
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

CPU: 0 PID: 6165 Comm: syz-executor.4 Not tainted 6.4.0-syzkaller-g257152fe29be #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
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