usercopy: Kernel memory exposure attempt detected from page alloc (offset 0, size 4194560)!
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kernel BUG at mm/usercopy.c:102!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5161 Comm: syz-executor.6 Not tainted 6.3.0-rc1-syzkaller-00012-gb6a7bac18447 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:usercopy_abort+0xb5/0xd0
Code: e8 10 6c a1 ff 49 89 e9 48 89 d9 41 56 4c 89 fa 4c 89 e6 48 c7 c7 80 81 7b 8a ff 74 24 08 41 55 4c 8b 44 24 20 e8 fb f6 84 ff <0f> 0b 48 c7 c5 00 80 7b 8a 49 89 ed 49 89 e8 e9 74 ff ff ff 0f 1f
RSP: 0018:ffffc900046df9d8 EFLAGS: 00010286

RAX: 000000000000005b RBX: ffffffff8a7b8380 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8169b640 RDI: 0000000000000005
RBP: ffffffff8a7b8000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 79706f6372657375 R12: ffffffff8a7b80c0
R13: ffffffff8a7b8000 R14: 0000000000400100 R15: ffffffff8a7b8080
FS:  00007f153ca936c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff57ba1ff0 CR3: 000000002bcef000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __check_object_size+0x517/0x6f0
 con_font_op+0xb7f/0xe60
 vt_ioctl+0x4b9/0x2f50
 tty_ioctl+0x65f/0x1520
 __x64_sys_ioctl+0x189/0x210
 do_syscall_64+0x38/0xb0
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f153bc7c999
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f153ca930c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f153bd9bf80 RCX: 00007f153bc7c999
RDX: 0000000020000000 RSI: 0000000000004b72 RDI: 0000000000000003
RBP: 00007f153bcd8ad0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f153bd9bf80 R15: 00007fff8d36c3a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:usercopy_abort+0xb5/0xd0
Code: e8 10 6c a1 ff 49 89 e9 48 89 d9 41 56 4c 89 fa 4c 89 e6 48 c7 c7 80 81 7b 8a ff 74 24 08 41 55 4c 8b 44 24 20 e8 fb f6 84 ff <0f> 0b 48 c7 c5 00 80 7b 8a 49 89 ed 49 89 e8 e9 74 ff ff ff 0f 1f
RSP: 0018:ffffc900046df9d8 EFLAGS: 00010286

RAX: 000000000000005b RBX: ffffffff8a7b8380 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8169b640 RDI: 0000000000000005
RBP: ffffffff8a7b8000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 79706f6372657375 R12: ffffffff8a7b80c0
R13: ffffffff8a7b8000 R14: 0000000000400100 R15: ffffffff8a7b8080
FS:  00007f153ca936c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 000000002bcef000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
