------------[ cut here ]------------
Device '2-002c' does not have a release() function, it is broken and must be fixed. See Documentation/core-api/kobject.rst.
WARNING: drivers/base/core.c:2638 at device_release+0x1da/0x270 drivers/base/core.c:2638, CPU#0: syz.6.1164/9320
Modules linked in:
CPU: 0 UID: 0 PID: 9320 Comm: syz.6.1164 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:device_release+0x1dd/0x270 drivers/base/core.c:2638
Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 93 00 00 00 48 8b 6b 50 48 85 ed 74 19 e8 fd 4c b1 fb 48 8d 3d f6 be d5 0a 48 89 ee <67> 48 0f b9 3a e9 eb fe ff ff e8 e4 4c b1 fb 48 89 da 48 b8 00 00
RSP: 0000:ffffc90004c57a20 EFLAGS: 00010287
RAX: 0000000000003c41 RBX: ffff88806acdf020 RCX: ffffc9000d462000
RDX: 0000000000080000 RSI: ffff888055caee40 RDI: ffffffff912e3300
RBP: ffff888055caee40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88802a07ec00
R13: dffffc0000000000 R14: ffff888055caee40 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888096bf3000(0063) knlGS:00000000f5496b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000000c3aa1ba CR3: 00000000775fb000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1f7/0x640 lib/kobject.c:737
 put_device drivers/base/core.c:3880 [inline]
 device_unregister+0x2f/0xe0 drivers/base/core.c:4003
 i2c_unregister_device+0xf5/0x270 drivers/i2c/i2c-core-base.c:1075
 i2c_deregister_clients+0x255/0x460 drivers/i2c/i2c-core-base.c:1782
 i2c_del_adapter+0x124/0x2d0 drivers/i2c/i2c-core-base.c:1820
 i801_remove+0xa4/0x3d0 drivers/i2c/busses/i2c-i801.c:1696
 pci_device_remove+0xb2/0x1d0 drivers/pci/pci-driver.c:512
 device_remove+0xcb/0x180 drivers/base/dd.c:616
 __device_release_driver drivers/base/dd.c:1349 [inline]
 device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1372
 unbind_store+0xf8/0x110 drivers/base/bus.c:244
 drv_attr_store+0x74/0xb0 drivers/base/bus.c:125
 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:145
 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x6ac/0x1050 fs/read_write.c:687
 ksys_write+0x12a/0x250 fs/read_write.c:739
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xe7/0x970 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:332
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7fd4fec
Code: Unable to access opcode bytes at 0xf7fd4fc2.
RSP: 002b:00000000f549650c EFLAGS: 00000292 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000800001c0
RDX: 000000000000000c RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	df 48 89             	fisttps -0x77(%rax)
   3:	fa                   	cli
   4:	48 c1 ea 03          	shr    $0x3,%rdx
   8:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   c:	0f 85 93 00 00 00    	jne    0xa5
  12:	48 8b 6b 50          	mov    0x50(%rbx),%rbp
  16:	48 85 ed             	test   %rbp,%rbp
  19:	74 19                	je     0x34
  1b:	e8 fd 4c b1 fb       	call   0xfbb14d1d
  20:	48 8d 3d f6 be d5 0a 	lea    0xad5bef6(%rip),%rdi        # 0xad5bf1d
  27:	48 89 ee             	mov    %rbp,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 eb fe ff ff       	jmp    0xffffff1f
  34:	e8 e4 4c b1 fb       	call   0xfbb14d1d
  39:	48 89 da             	mov    %rbx,%rdx
  3c:	48                   	rex.W
  3d:	b8                   	.byte 0xb8