general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 18021 Comm: syz-executor.3 Not tainted 6.5.0-syzkaller-10898-gfdde61878047 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:strchr+0x1b/0xb0 lib/string.c:329
Code: 0f ae f7 48 8b 74 24 08 48 8b 14 24 eb 89 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 48 c1 ea 03 53 48 83 ec 10 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 51 0f b6 07 89
RSP: 0018:ffffc900299c7a10 EFLAGS: 00010282
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90007941000
RDX: 0000000000000000 RSI: 0000000000000025 RDI: 0000000000000000
RBP: ffffc900299c7aa0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900299c7aa0
R13: 0000000000000cc0 R14: ffff88801b65e2f0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88802c700000(0063) knlGS:00000000f7f5ab40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000c011c66000 CR3: 000000007686b000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kvasprintf_const+0x25/0x190 lib/kasprintf.c:45
 kobject_set_name_vargs+0x5a/0x130 lib/kobject.c:272
 kobject_add_varg lib/kobject.c:366 [inline]
 kobject_add+0x12a/0x240 lib/kobject.c:424
 device_add+0x290/0x1ac0 drivers/base/core.c:3560
 cdev_device_add+0x12b/0x270 fs/char_dev.c:556
 evdev_connect+0x3a0/0x4c0 drivers/input/evdev.c:1386
 input_attach_handler.isra.0+0x17c/0x250 drivers/input/input.c:1064
 input_register_device+0xb1e/0x1130 drivers/input/input.c:2396
 uinput_create_device drivers/input/misc/uinput.c:365 [inline]
 uinput_ioctl_handler.isra.0+0x1308/0x1d70 drivers/input/misc/uinput.c:904
 __do_compat_sys_ioctl+0x2bf/0x330 fs/ioctl.c:972
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7f5f579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f7f5a5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000005501
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:strchr+0x1b/0xb0 lib/string.c:329
Code: 0f ae f7 48 8b 74 24 08 48 8b 14 24 eb 89 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 48 c1 ea 03 53 48 83 ec 10 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 51 0f b6 07 89
RSP: 0018:ffffc900299c7a10 EFLAGS: 00010282
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90007941000
RDX: 0000000000000000 RSI: 0000000000000025 RDI: 0000000000000000
RBP: ffffc900299c7aa0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900299c7aa0
R13: 0000000000000cc0 R14: ffff88801b65e2f0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88802c600000(0063) knlGS:00000000f7f5ab40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000c011c6c000 CR3: 000000007686b000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	ae                   	scas   %es:(%rdi),%al
   1:	f7 48 8b 74 24 08 48 	testl  $0x48082474,-0x75(%rax)
   8:	8b 14 24             	mov    (%rsp),%edx
   b:	eb 89                	jmp    0xffffff96
   d:	90                   	nop
   e:	f3 0f 1e fa          	endbr64
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df
  1c:	48 89 fa             	mov    %rdi,%rdx
  1f:	55                   	push   %rbp
  20:	48 c1 ea 03          	shr    $0x3,%rdx
  24:	53                   	push   %rbx
  25:	48 83 ec 10          	sub    $0x10,%rsp
* 29:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2d:	48 89 fa             	mov    %rdi,%rdx
  30:	83 e2 07             	and    $0x7,%edx
  33:	38 d0                	cmp    %dl,%al
  35:	7f 04                	jg     0x3b
  37:	84 c0                	test   %al,%al
  39:	75 51                	jne    0x8c
  3b:	0f b6 07             	movzbl (%rdi),%eax
  3e:	89                   	.byte 0x89