!list_empty(&mtd->part.node)
WARNING: drivers/mtd/mtdpart.c:38 at release_mtd_partition+0x71/0x90 drivers/mtd/mtdpart.c:38, CPU#0: syz.3.117/6396
Modules linked in:

CPU: 0 UID: 0 PID: 6396 Comm: syz.3.117 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:release_mtd_partition+0x71/0x90 drivers/mtd/mtdpart.c:38
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 1e 48 8b 7b 38 e8 4f 01 b3 fb 48 89 df 5b 5d e9 45 01 b3 fb e8 80 9f 4f fb 90 <0f> 0b 90 eb c2 e8 95 1c bf fb eb db 48 89 ef e8 8b 1c bf fb eb a5
RSP: 0018:ffffc900219d79b8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880281f3000 RCX: ffffffff8bb110e3
RDX: ffff888022ac4a80 RSI: ffffffff86b98ce0 RDI: ffff8880281f3000
RBP: ffff8880281f36a8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888014205460 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888096bf5000(0063) knlGS:00000000f543db40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f704f000 CR3: 00000000609f8000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 mtd_release+0xa0/0xd0 drivers/mtd/mtdcore.c:102
 device_release+0xd2/0x270 drivers/base/core.c:2636
 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+0x1f/0x30 drivers/base/core.c:3880
 add_mtd_device+0xbd7/0x17a0 drivers/mtd/mtdcore.c:803
 mtd_add_partition+0x30a/0x660 drivers/mtd/mtdpart.c:280
 mtdchar_blkpg_ioctl+0x207/0x250 drivers/mtd/mtdchar.c:562
 mtdchar_compat_ioctl+0x3d6/0x440 drivers/mtd/mtdchar.c:1322
 __do_compat_sys_ioctl fs/ioctl.c:695 [inline]
 __se_compat_sys_ioctl fs/ioctl.c:638 [inline]
 __ia32_compat_sys_ioctl+0x2cf/0x360 fs/ioctl.c:638
 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: 0023:0xf704efec
Code: Unable to access opcode bytes at 0xf704efc2.
RSP: 002b:00000000f543d50c EFLAGS: 00000292 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000001269
RDX: 0000000080000640 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>