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: 8480 Comm: syz-executor0 Not tainted 4.20.0-rc1-next-20181109+ #110
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:reset_buffer_flags drivers/tty/n_tty.c:334 [inline]
RIP: 0010:n_tty_flush_buffer+0x64/0x260 drivers/tty/n_tty.c:372
Code: 80 3c 02 00 0f 85 d0 01 00 00 49 8b 9c 24 70 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 60 22 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 9c 01 00 00 48 c7 83 60 22 00 00 00 00 00 00 48
kobject: 'loop2' (00000000d8ac1237): kobject_uevent_env
RSP: 0018:ffff8801c11f7680 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 000000000000044c RSI: 0000000000000000 RDI: 0000000000002260
RBP: ffff8801c11f7698 R08: ffff8801c1f42f30 R09: 0000000000000008
R10: 00000000000028e4 R11: ffff8801c1f42640 R12: ffff8801b91dec80
R13: ffff8801b91deeb8 R14: 0000000000000000 R15: ffff8801c11f76e8
kobject: 'loop2' (00000000d8ac1237): fill_kobj_path: path = '/devices/virtual/block/loop2'
FS:  00007fed20418700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc0625dc18 CR3: 00000001c23f0000 CR4: 00000000001406f0
Call Trace:
 set_termios+0x390/0x7d0 drivers/tty/tty_ioctl.c:404
 tty_mode_ioctl+0x268/0xb40 drivers/tty/tty_ioctl.c:745
 n_tty_ioctl_helper+0x54/0x3b0 drivers/tty/tty_ioctl.c:940
 n_tty_ioctl+0x54/0x360 drivers/tty/n_tty.c:2464
 tty_ioctl+0x5c6/0x17d0 drivers/tty/tty_io.c:2646
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fed20417c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 0000000020000000 RSI: 0000000000005404 RDI: 0000000000000005
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fed204186d4
R13: 00000000004c100b R14: 00000000004d1da0 R15: 00000000ffffffff
Modules linked in:
kobject: 'loop1' (00000000f79e09ce): kobject_uevent_env
kobject: 'loop1' (00000000f79e09ce): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (00000000825a7fe4): kobject_uevent_env
---[ end trace f7d3f5c3f08d2d1e ]---
kobject: 'loop5' (00000000825a7fe4): fill_kobj_path: path = '/devices/virtual/block/loop5'
RIP: 0010:reset_buffer_flags drivers/tty/n_tty.c:334 [inline]
RIP: 0010:n_tty_flush_buffer+0x64/0x260 drivers/tty/n_tty.c:372
Code: 80 3c 02 00 0f 85 d0 01 00 00 49 8b 9c 24 70 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 60 22 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 9c 01 00 00 48 c7 83 60 22 00 00 00 00 00 00 48
kobject: 'kvm' (000000001a6e05e9): kobject_uevent_env
kobject: 'kvm' (000000001a6e05e9): fill_kobj_path: path = '/devices/virtual/misc/kvm'
RSP: 0018:ffff8801c11f7680 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 000000000000044c RSI: 0000000000000000 RDI: 0000000000002260
RBP: ffff8801c11f7698 R08: ffff8801c1f42f30 R09: 0000000000000008
kobject: 'loop4' (0000000004ac2125): kobject_uevent_env
R10: 00000000000028e4 R11: ffff8801c1f42640 R12: ffff8801b91dec80
kobject: 'loop4' (0000000004ac2125): fill_kobj_path: path = '/devices/virtual/block/loop4'
R13: ffff8801b91deeb8 R14: 0000000000000000 R15: ffff8801c11f76e8
kobject: 'loop1' (00000000f79e09ce): kobject_uevent_env
kobject: 'kvm' (000000001a6e05e9): kobject_uevent_env
kobject: 'kvm' (000000001a6e05e9): kobject_uevent_env
kobject: 'kvm' (000000001a6e05e9): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000f79e09ce): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'kvm' (000000001a6e05e9): fill_kobj_path: path = '/devices/virtual/misc/kvm'
FS:  00007fed20418700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop5' (00000000825a7fe4): kobject_uevent_env
CR2: 00007ffc0625dc18 CR3: 00000001c23f0000 CR4: 00000000001426f0