RDX: 0000000000000000 RSI: 0000000020001380 RDI: ffffffffffffff9c
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000436 R14: 00000000006f95b0 R15: 0000000000000005
CPU: 0 PID: 15396 Comm: syz-executor6 Not tainted 4.16.0+ #17
Kernel panic - not syncing: n_tty: init_tty
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+0x1b9/0x294 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1522
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc+0x2af/0x760 mm/slab.c:3552
 kmem_cache_zalloc include/linux/slab.h:691 [inline]
 __kernfs_new_node+0xe7/0x580 fs/kernfs/dir.c:633
 kernfs_new_node+0x80/0xf0 fs/kernfs/dir.c:679
 kernfs_create_dir_ns+0x3d/0x140 fs/kernfs/dir.c:1000
 kernfs_create_dir include/linux/kernfs.h:501 [inline]
 internal_create_group+0x110/0x970 fs/sysfs/group.c:122
 sysfs_create_group+0x1f/0x30 fs/sysfs/group.c:154
 loop_sysfs_init drivers/block/loop.c:792 [inline]
 loop_set_fd drivers/block/loop.c:932 [inline]
 lo_ioctl+0x1569/0x1ec0 drivers/block/loop.c:1369
 __blkdev_driver_ioctl block/ioctl.c:303 [inline]
 blkdev_ioctl+0x9b6/0x2020 block/ioctl.c:601
 block_ioctl+0xee/0x130 fs/block_dev.c:1877
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x1cf/0x1650 fs/ioctl.c:684
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701
 SYSC_ioctl fs/ioctl.c:708 [inline]
 SyS_ioctl+0x24/0x30 fs/ioctl.c:706
 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4550c7
RSP: 002b:00007f22cdaf8bb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000200000d0 RCX: 00000000004550c7
RDX: 0000000000000015 RSI: 0000000000004c00 RDI: 0000000000000016
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000015
R13: 000000000000066f R14: 00000000006fcb08 R15: 0000000000000008
CPU: 1 PID: 15380 Comm: syz-executor3 Not tainted 4.16.0+ #17
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+0x1b9/0x294 lib/dump_stack.c:113
 panic+0x22f/0x4de kernel/panic.c:183
 tty_ldisc_init.cold.6+0x16/0x16 drivers/tty/tty_ldisc.c:831
 alloc_tty_struct+0x1a8/0xa50 drivers/tty/tty_io.c:2819
 tty_init_dev+0x7d/0x460 drivers/tty/tty_io.c:1317
 ptmx_open+0x12a/0x360 drivers/tty/pty.c:832
 chrdev_open+0x256/0x760 fs/char_dev.c:417
 do_dentry_open+0x7ef/0xf10 fs/open.c:784
 vfs_open+0x139/0x230 fs/open.c:906
 do_last fs/namei.c:3365 [inline]
 path_openat+0x1676/0x4e20 fs/namei.c:3501
 do_filp_open+0x249/0x350 fs/namei.c:3535
 do_sys_open+0x59a/0x770 fs/open.c:1093
 SYSC_openat fs/open.c:1120 [inline]
 SyS_openat+0x30/0x40 fs/open.c:1114
 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x455259
RSP: 002b:00007f80fa2ddc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f80fa2de6d4 RCX: 0000000000455259
RDX: 0000000000000000 RSI: 0000000020001380 RDI: ffffffffffffff9c
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000436 R14: 00000000006f95b0 R15: 0000000000000005
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..