input: syz1 as /devices/virtual/input/input16
BUG: unable to handle page fault for address: fffffffffffffff8
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 76b7067 P4D 76b7067 PUD 76b9067 PMD 0 
Oops: Oops: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 565 Comm: syz.0.29 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:swake_up_locked kernel/sched/swait.c:30 [inline]
RIP: 0010:complete_with_flags kernel/sched/completion.c:29 [inline]
RIP: 0010:complete+0x9e/0x1c0 kernel/sched/completion.c:52
Code: e7 e8 66 15 7d 00 4d 8b 3c 24 4d 39 e7 0f 84 db 00 00 00 49 8d 7f f8 48 89 f8 48 c1 e8 03 42 80 3c 30 00 74 05 e8 42 15 7d 00 <49> 8b 7f f8 be 03 00 00 00 31 d2 e8 62 f5 f8 ff 4c 89 ff e8 4a e2
RSP: 0018:ffffc90000fdfcc0 EFLAGS: 00010046
RAX: 1fffffffffffffff RBX: ffffc90000f1fa58 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffffffffffffff8
RBP: ffffc90000fdfcf8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001fbf88 R12: ffffc90000f1fa60
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fd78a5ff6c0(0000) GS:ffff88826e38c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff8 CR3: 000000010cb7c000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 uinput_flush_requests drivers/input/misc/uinput.c:213 [inline]
 uinput_destroy_device+0x129/0x900 drivers/input/misc/uinput.c:298
 uinput_release+0x3b/0x60 drivers/input/misc/uinput.c:758
 __fput+0x3ee/0xa50 fs/file_table.c:469
 ____fput+0x1c/0x30 fs/file_table.c:497
 task_work_run+0x1e3/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
 exit_to_user_mode_loop+0xa8/0xd0 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x1ea/0xfd0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fd78a79bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd78a5ff028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007fd78aa15fa0 RCX: 00007fd78a79bf79
RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000004
RBP: 00007fd78a8327e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd78aa16038 R14: 00007fd78aa15fa0 R15: 00007ffd1b8f0488
 </TASK>
Modules linked in:
CR2: fffffffffffffff8
---[ end trace 0000000000000000 ]---
RIP: 0010:swake_up_locked kernel/sched/swait.c:30 [inline]
RIP: 0010:complete_with_flags kernel/sched/completion.c:29 [inline]
RIP: 0010:complete+0x9e/0x1c0 kernel/sched/completion.c:52
Code: e7 e8 66 15 7d 00 4d 8b 3c 24 4d 39 e7 0f 84 db 00 00 00 49 8d 7f f8 48 89 f8 48 c1 e8 03 42 80 3c 30 00 74 05 e8 42 15 7d 00 <49> 8b 7f f8 be 03 00 00 00 31 d2 e8 62 f5 f8 ff 4c 89 ff e8 4a e2
RSP: 0018:ffffc90000fdfcc0 EFLAGS: 00010046
RAX: 1fffffffffffffff RBX: ffffc90000f1fa58 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffffffffffffff8
RBP: ffffc90000fdfcf8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001fbf88 R12: ffffc90000f1fa60
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fd78a5ff6c0(0000) GS:ffff88826e38c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff8 CR3: 000000010cb7c000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	e7 e8                	out    %eax,$0xe8
   2:	66 15 7d 00          	adc    $0x7d,%ax
   6:	4d 8b 3c 24          	mov    (%r12),%r15
   a:	4d 39 e7             	cmp    %r12,%r15
   d:	0f 84 db 00 00 00    	je     0xee
  13:	49 8d 7f f8          	lea    -0x8(%r15),%rdi
  17:	48 89 f8             	mov    %rdi,%rax
  1a:	48 c1 e8 03          	shr    $0x3,%rax
  1e:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1)
  23:	74 05                	je     0x2a
  25:	e8 42 15 7d 00       	call   0x7d156c
* 2a:	49 8b 7f f8          	mov    -0x8(%r15),%rdi <-- trapping instruction
  2e:	be 03 00 00 00       	mov    $0x3,%esi
  33:	31 d2                	xor    %edx,%edx
  35:	e8 62 f5 f8 ff       	call   0xfff8f59c
  3a:	4c 89 ff             	mov    %r15,%rdi
  3d:	e8                   	.byte 0xe8
  3e:	4a                   	rex.WX
  3f:	e2                   	.byte 0xe2