R13: 0000000000000020 R14: 00000000004d8258 R15: 0000000000000003 input: syz1 as /devices/virtual/input/input2865 input: failed to attach handler leds to device input2865, error: -6 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: 1 PID: 5807 Comm: syz-executor0 Not tainted 4.19.0-next-20181030+ #101 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:put_fs_context+0x31/0x5a0 fs/fs_context.c:487 Code: 56 41 55 41 54 53 48 89 fb 4c 8d ab 98 00 00 00 48 83 ec 18 e8 10 25 9f ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 03 05 00 00 4c 8b a3 98 00 00 00 4d 85 e4 74 66 RSP: 0018:ffff8801caa7fbd8 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: fffffffffffffff4 RCX: ffffc900021cb000 RDX: 0000000000000011 RSI: ffffffff81e04360 RDI: fffffffffffffff4 RBP: ffff8801caa7fc18 R08: ffff880181f726c0 R09: ffffed003b5e5b67 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801bc321a30 R13: 000000000000008c R14: ffff8801c931e4c0 R15: ffff8801679ece40 FS: 00007fe310868700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000400200 CR3: 000000016a27d000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_remount fs/namespace.c:2428 [inline] do_mount+0xda4/0x1ff0 fs/namespace.c:3020 ksys_mount+0x12d/0x140 fs/namespace.c:3245 __do_sys_mount fs/namespace.c:3259 [inline] __se_sys_mount fs/namespace.c:3256 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3256 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459fda Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007fe310867a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fe310867b30 RCX: 0000000000459fda RDX: 00007fe310867ad0 RSI: 00000000200001c0 RDI: 00007fe310867af0 RBP: 00000000200001c0 R08: 00007fe310867b30 R09: 00007fe310867ad0 R10: 0000000000000020 R11: 0000000000000206 R12: 0000000000000004 R13: 0000000000000020 R14: 00000000004d8258 R15: 0000000000000003 Modules linked in: kobject: 'loop2' (00000000d9360955): kobject_uevent_env kobject: 'input2866' (000000006a8026d0): kobject_add_internal: parent: 'input', set: 'devices' kobject: 'loop2' (00000000d9360955): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'input2866' (000000006a8026d0): kobject_uevent_env kobject: 'input2866' (000000006a8026d0): fill_kobj_path: path = '/devices/virtual/input/input2866' kobject: 'loop1' (00000000735ff5a3): kobject_uevent_env kobject: 'input2866' (000000006a8026d0): fill_kobj_path: path = '/devices/virtual/input/input2866' kobject: 'loop1' (00000000735ff5a3): kobject_uevent_env input: syz1 as /devices/virtual/input/input2866 kobject: 'loop1' (00000000735ff5a3): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000d2bcb905): kobject_uevent_env kobject: 'loop1' (00000000735ff5a3): fill_kobj_path: path = '/devices/virtual/block/loop1' input: failed to attach handler leds to device input2866, error: -6 kobject: 'loop5' (00000000d2bcb905): kobject_uevent_env kobject: 'loop5' (00000000d2bcb905): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (00000000d2bcb905): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'event4' (000000005e068805): kobject_add_internal: parent: 'input2866', set: 'devices' kobject: 'loop4' (000000003a66bd5c): kobject_uevent_env kobject: 'event4' (000000005e068805): kobject_uevent_env kobject: 'loop4' (000000003a66bd5c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'event4' (000000005e068805): fill_kobj_path: path = '/devices/virtual/input/input2866/event4' kobject: 'event4' (000000005e068805): kobject_uevent_env kobject: 'loop1' (00000000735ff5a3): kobject_uevent_env ---[ end trace a6bdeed94bf866a5 ]--- kobject: 'loop0' (0000000077f44868): kobject_uevent_env uinput: write device info first RIP: 0010:put_fs_context+0x31/0x5a0 fs/fs_context.c:487 kobject: 'loop1' (00000000735ff5a3): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000d2bcb905): kobject_uevent_env kobject: 'loop0' (0000000077f44868): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'event4' (000000005e068805): fill_kobj_path: path = '/devices/virtual/input/input2866/event4' kobject: 'loop1' (00000000735ff5a3): kobject_uevent_env Code: 56 41 55 41 54 53 48 89 fb 4c 8d ab 98 00 00 00 48 83 ec 18 e8 10 25 9f ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 03 05 00 00 4c 8b a3 98 00 00 00 4d 85 e4 74 66 kobject: 'loop1' (00000000735ff5a3): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000d2bcb905): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000735ff5a3): kobject_uevent_env kobject: '(null)' (000000002e474719): kobject_cleanup, parent 000000005e068805 RSP: 0018:ffff8801caa7fbd8 EFLAGS: 00010207 kobject: 'loop1' (00000000735ff5a3): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: '(null)' (000000002e474719): calling ktype release RAX: dffffc0000000000 RBX: fffffffffffffff4 RCX: ffffc900021cb000 RDX: 0000000000000011 RSI: ffffffff81e04360 RDI: fffffffffffffff4 kobject: 'loop5' (00000000d2bcb905): kobject_uevent_env kobject: 'loop5' (00000000d2bcb905): fill_kobj_path: path = '/devices/virtual/block/loop5' RBP: ffff8801caa7fc18 R08: ffff880181f726c0 R09: ffffed003b5e5b67 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801bc321a30 kobject: 'event4' (000000005e068805): kobject_cleanup, parent (null) R13: 000000000000008c R14: ffff8801c931e4c0 R15: ffff8801679ece40 kobject: 'loop5' (00000000d2bcb905): kobject_uevent_env kobject: 'event4' (000000005e068805): calling ktype release kobject: 'loop5' (00000000d2bcb905): fill_kobj_path: path = '/devices/virtual/block/loop5' FS: 00007fe310868700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'event4': free name CR2: 00007ffc11610bc8 CR3: 000000016a27d000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'loop5' (00000000d2bcb905): kobject_uevent_env DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'input2866' (000000006a8026d0): kobject_uevent_env