=====================================================
BUG: KMSAN: uninit-value in store_utf8 drivers/tty/vt/selection.c:136 [inline]
BUG: KMSAN: uninit-value in vc_selection_store_chars drivers/tty/vt/selection.c:209 [inline]
BUG: KMSAN: uninit-value in vc_do_selection drivers/tty/vt/selection.c:313 [inline]
BUG: KMSAN: uninit-value in vc_selection drivers/tty/vt/selection.c:350 [inline]
BUG: KMSAN: uninit-value in set_selection_kernel+0x3033/0x38c0 drivers/tty/vt/selection.c:359
CPU: 0 PID: 29226 Comm: syz-executor.3 Not tainted 5.10.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x21c/0x280 lib/dump_stack.c:118
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 store_utf8 drivers/tty/vt/selection.c:136 [inline]
 vc_selection_store_chars drivers/tty/vt/selection.c:209 [inline]
 vc_do_selection drivers/tty/vt/selection.c:313 [inline]
 vc_selection drivers/tty/vt/selection.c:350 [inline]
 set_selection_kernel+0x3033/0x38c0 drivers/tty/vt/selection.c:359
 set_selection_user+0x12a/0x170 drivers/tty/vt/selection.c:185
 tioclinux+0x24d/0xce0 drivers/tty/vt/vt.c:3160
 vt_ioctl+0x1c73/0x5ff0 drivers/tty/vt/vt_ioctl.c:823
 vt_compat_ioctl+0x5a2/0xf70 drivers/tty/vt/vt_ioctl.c:1220
 tty_compat_ioctl+0x746/0x1660 drivers/tty/tty_io.c:2847
 __do_compat_sys_ioctl fs/ioctl.c:842 [inline]
 __se_compat_sys_ioctl+0x53d/0x1100 fs/ioctl.c:793
 __ia32_compat_sys_ioctl+0x4a/0x70 fs/ioctl.c:793
 do_syscall_32_irqs_on arch/x86/entry/common.c:80 [inline]
 __do_fast_syscall_32+0x102/0x160 arch/x86/entry/common.c:139
 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:162
 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:205
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7fed549
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f55e70cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000000541c
RDX: 0000000020000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000

Uninit was created at:
 kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121
 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274
 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:4989
 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2271
 alloc_pages include/linux/gfp.h:547 [inline]
 __vmalloc_area_node mm/vmalloc.c:2506 [inline]
 __vmalloc_node_range+0x9b4/0x12d0 mm/vmalloc.c:2572
 __vmalloc_node mm/vmalloc.c:2615 [inline]
 vmalloc+0xe0/0xf0 mm/vmalloc.c:2648
 vc_uniscr_alloc drivers/tty/vt/vt.c:347 [inline]
 vc_do_resize+0x73d/0x30c0 drivers/tty/vt/vt.c:1233
 vc_resize+0xc3/0xe0 drivers/tty/vt/vt.c:1346
 fbcon_modechanged+0xde1/0x1160 drivers/video/fbdev/core/fbcon.c:2694
 fbcon_update_vcs+0x86/0xa0 drivers/video/fbdev/core/fbcon.c:2750
 do_fb_ioctl+0xf2c/0x1090 drivers/video/fbdev/core/fbmem.c:1110
 fb_compat_ioctl+0x480/0x1d70 drivers/video/fbdev/core/fbmem.c:1315
 __do_compat_sys_ioctl fs/ioctl.c:842 [inline]
 __se_compat_sys_ioctl+0x53d/0x1100 fs/ioctl.c:793
 __ia32_compat_sys_ioctl+0x4a/0x70 fs/ioctl.c:793
 do_syscall_32_irqs_on arch/x86/entry/common.c:80 [inline]
 __do_fast_syscall_32+0x102/0x160 arch/x86/entry/common.c:139
 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:162
 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:205
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
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