kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 6443 Comm: syz-executor800 Not tainted 4.19.114-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:do_con_write.part.0+0x9c3/0x1db0 drivers/tty/vt/vt.c:2760 Code: 24 b6 00 00 00 45 01 ef e8 aa dd c7 fd 48 8b 44 24 78 80 38 00 0f 85 4c 12 00 00 49 8b 9c 24 a0 03 00 00 48 89 d8 48 c1 e8 03 <0f> b6 14 28 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 c8 RSP: 0000:ffff888089fff930 EFLAGS: 00010202 RAX: 000000001fffffe9 RBX: 00000000ffffff48 RCX: ffffffff839fc676 RDX: 0000000000000000 RSI: ffffffff839fc6c6 RDI: 0000000000000003 RBP: dffffc0000000000 R08: ffff888089a32680 R09: 0000000000000005 R10: ffffed1015cc4732 R11: ffff8880ae623993 R12: ffff8880a4d23500 R13: 0000000000000000 R14: ffff8880a4d2388c R15: 0000000000000778 FS: 0000000001da2880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f86de4f4150 CR3: 00000000a8c01000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_con_write drivers/tty/vt/vt.c:2565 [inline] con_write+0x41/0xe0 drivers/tty/vt/vt.c:3132 process_output_block drivers/tty/n_tty.c:593 [inline] n_tty_write+0x3ee/0x1080 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:960 [inline] tty_write+0x452/0x790 drivers/tty/tty_io.c:1044 __vfs_write+0xf7/0x760 fs/read_write.c:485 vfs_write+0x206/0x550 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441639 Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc7319bde8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441639 RDX: 0000000000000320 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 00000000006cc018 R08: 000000000000000e R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004023b0 R13: 0000000000402440 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace c50d52df6e3c7bb6 ]--- RIP: 0010:do_con_write.part.0+0x9c3/0x1db0 drivers/tty/vt/vt.c:2760 Code: 24 b6 00 00 00 45 01 ef e8 aa dd c7 fd 48 8b 44 24 78 80 38 00 0f 85 4c 12 00 00 49 8b 9c 24 a0 03 00 00 48 89 d8 48 c1 e8 03 <0f> b6 14 28 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 c8 RSP: 0000:ffff888089fff930 EFLAGS: 00010202 RAX: 000000001fffffe9 RBX: 00000000ffffff48 RCX: ffffffff839fc676 RDX: 0000000000000000 RSI: ffffffff839fc6c6 RDI: 0000000000000003 RBP: dffffc0000000000 R08: ffff888089a32680 R09: 0000000000000005 R10: ffffed1015cc4732 R11: ffff8880ae623993 R12: ffff8880a4d23500 R13: 0000000000000000 R14: ffff8880a4d2388c R15: 0000000000000778 FS: 0000000001da2880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f86de4f4150 CR3: 00000000a8c01000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400