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BUG: KASAN: vmalloc-out-of-bounds in tpg_fill_plane_buffer+0x1ad1/0x5af0 drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:2702
Write of size 2560 at addr ffffc9000b448000 by task vivid-000-vid-c/13030

CPU: 1 UID: 0 PID: 13030 Comm: vivid-000-vid-c Not tainted 6.12.0-rc5-syzkaller-00181-g6c52d4da1c74 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 __asan_memcpy+0x40/0x70 mm/kasan/shadow.c:106
 tpg_fill_plane_buffer+0x1ad1/0x5af0 drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:2702
 vivid_fillbuff drivers/media/test-drivers/vivid/vivid-kthread-cap.c:470 [inline]
 vivid_thread_vid_cap_tick+0xf8e/0x60d0 drivers/media/test-drivers/vivid/vivid-kthread-cap.c:629
 vivid_thread_vid_cap+0x8aa/0xf30 drivers/media/test-drivers/vivid/vivid-kthread-cap.c:767
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc9000b420000, ffffc9000b449000) created by:
 vb2_vmalloc_alloc+0xf2/0x340 drivers/media/common/videobuf2/videobuf2-vmalloc.c:47

Memory state around the buggy address:
 ffffc9000b447f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000b447f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc9000b448000: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
                   ^
 ffffc9000b448080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ffffc9000b448100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
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