RDX: 0000000000000000 RSI: 0000000000005441 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000017 R13: 0000000000000307 R14: 00000000006f6948 R15: 0000000000000002 ------------[ cut here ]------------ kernel BUG at drivers/tty/tty_ldisc.c:684! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 14213 Comm: syz-executor3 Not tainted 4.16.0-rc7+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tty_ldisc_reinit+0x236/0x2b0 drivers/tty/tty_ldisc.c:684 RSP: 0018:ffff8801adf27660 EFLAGS: 00010246 RAX: 0000000000010000 RBX: ffff8801b183abc0 RCX: ffffffff82f49786 RDX: 0000000000010000 RSI: ffffc9000247a000 RDI: 0000000000000282 RBP: ffff8801adf27688 R08: 1ffff10035be4e8c R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: fffffffffffffff4 R13: ffff8801b183b020 R14: 0000000000000000 R15: ffff8801ad714810 FS: 00007fa945248700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b9bc22000 CR3: 00000001ac88a004 CR4: 00000000001626e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tty_reopen+0x1a3/0x220 drivers/tty/tty_io.c:1272 tty_open_by_driver drivers/tty/tty_io.c:1953 [inline] tty_open+0x877/0xaa0 drivers/tty/tty_io.c:2007 chrdev_open+0x257/0x730 fs/char_dev.c:417 do_dentry_open+0x667/0xd40 fs/open.c:752 vfs_open+0x107/0x220 fs/open.c:866 dentry_open+0x9a/0x1f0 fs/open.c:883 ptm_open_peer+0x20b/0x2f0 drivers/tty/pty.c:639 tty_ioctl+0x517/0x1610 drivers/tty/tty_io.c:2639 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4548b9 RSP: 002b:00007fa945247c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa9452486d4 RCX: 00000000004548b9 RDX: 0000000000000000 RSI: 0000000000005441 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000017 R13: 0000000000000307 R14: 00000000006f6948 R15: 0000000000000002 Code: 02 00 0f 85 84 00 00 00 48 c7 83 b0 00 00 00 00 00 00 00 e9 0c fe ff ff e8 a8 31 7d fe 45 85 f6 0f 85 f9 fd ff ff e8 9a 31 7d fe <0f> 0b 4c 89 ef e8 40 78 b5 fe e9 43 fe ff ff 4c 89 ef e8 33 78 RIP: tty_ldisc_reinit+0x236/0x2b0 drivers/tty/tty_ldisc.c:684 RSP: ffff8801adf27660 ---[ end trace b6206921a6160df4 ]---