r10:00000036 r9:850d8000 r8:8020029c r7:00000036 r6:0012ed04 r5:00000000
 r4:00000000
kobject: kobject_add_internal failed for mtd5 (error: -12 parent: mtd)
------------[ cut here ]------------
WARNING: drivers/mtd/mtdpart.c:37 at release_mtd_partition+0x4c/0x50 drivers/mtd/mtdpart.c:37, CPU#0: syz.0.2450/12728
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 UID: 0 PID: 12728 Comm: syz.0.2450 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: ARM-Versatile Express
Call trace: 
[<80201a14>] (dump_backtrace) from [<80201b08>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:8281f9b4 r6:00000000 r5:822a8908 r4:00000001
[<80201af0>] (show_stack) from [<8021e410>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201af0>] (show_stack) from [<8021e410>] (dump_stack_lvl+0x5c/0x70 lib/dump_stack.c:120)
[<8021e3b4>] (dump_stack_lvl) from [<8021e43c>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r7:8281f9b4 r6:00000000 r5:850d8000 r4:82a80d14
[<8021e424>] (dump_stack) from [<8020260c>] (vpanic+0x114/0x320 kernel/panic.c:650)
[<802024f8>] (vpanic) from [<8020284c>] (trace_suspend_resume+0x0/0x104 kernel/panic.c:787)
 r7:80d0e4e0
[<80202818>] (panic) from [<80250a70>] (check_panic_on_warn kernel/panic.c:524 [inline])
[<80202818>] (panic) from [<80250a70>] (get_taint+0x0/0x1c kernel/panic.c:519)
 r3:8280c544 r2:00000001 r1:8228f614 r0:82296ee0
[<802509f8>] (check_panic_on_warn) from [<80250bec>] (__warn+0x98/0x1ac kernel/panic.c:1062)
[<80250b54>] (__warn) from [<80250e78>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:1089)
 r8:00000009 r7:823638a8 r6:ede21bbc r5:850d8000 r4:00000000
[<80250d04>] (warn_slowpath_fmt) from [<80d0e4e0>] (release_mtd_partition+0x4c/0x50 drivers/mtd/mtdpart.c:37)
 r10:fffffff4 r9:855780f8 r8:8297b2f0 r7:00000000 r6:85e6d980 r5:85578000
 r4:85578000
[<80d0e494>] (release_mtd_partition) from [<80d08a5c>] (mtd_release+0x40/0x54 drivers/mtd/mtdcore.c:101)
 r5:85578000 r4:05a0000a
[<80d08a1c>] (mtd_release) from [<80b9501c>] (device_release+0x40/0xb0 drivers/base/core.c:2566)
 r5:00000000 r4:855780f8
[<80b94fdc>] (device_release) from [<81ac0d48>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80b94fdc>] (device_release) from [<81ac0d48>] (kobject_release lib/kobject.c:720 [inline])
[<80b94fdc>] (device_release) from [<81ac0d48>] (kref_put include/linux/kref.h:65 [inline])
[<80b94fdc>] (device_release) from [<81ac0d48>] (kobject_put+0xa0/0x258 lib/kobject.c:737)
 r5:81d54c7c r4:855780f8
[<81ac0ca8>] (kobject_put) from [<80b95260>] (put_device+0x18/0x1c drivers/base/core.c:3799)
 r8:8297b2f0 r7:05a0000a r6:fffffff4 r5:00000005 r4:85578000
[<80b95248>] (put_device) from [<80d0ba94>] (add_mtd_device+0x698/0x828 drivers/mtd/mtdcore.c:802)
[<80d0b3fc>] (add_mtd_device) from [<80d0e3d0>] (mtd_add_partition+0x140/0x204 drivers/mtd/mtdpart.c:279)
 r10:00000003 r9:844d0f00 r8:85578308 r7:85fe9708 r6:85578000 r5:844d0c00
 r4:844d0f28
[<80d0e290>] (mtd_add_partition) from [<80d11888>] (mtdchar_blkpg_ioctl drivers/mtd/mtdchar.c:562 [inline])
[<80d0e290>] (mtd_add_partition) from [<80d11888>] (mtdchar_ioctl+0x125c/0x1474 drivers/mtd/mtdchar.c:1218)
 r10:850d8000 r9:85e41f40 r8:85fa60c0 r7:844d0c00 r6:20000640 r5:00000000
 r4:00000003
[<80d1062c>] (mtdchar_ioctl) from [<80d11aec>] (mtdchar_unlocked_ioctl+0x4c/0x64 drivers/mtd/mtdchar.c:1241)
 r10:850d8000 r9:00000004 r8:85fa60c0 r7:20000640 r6:00001269 r5:85fa60c0
 r4:844d0f3c
[<80d11aa0>] (mtdchar_unlocked_ioctl) from [<80591298>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<80d11aa0>] (mtdchar_unlocked_ioctl) from [<80591298>] (do_vfs_ioctl fs/ioctl.c:551 [inline])
[<80d11aa0>] (mtdchar_unlocked_ioctl) from [<80591298>] (__do_sys_ioctl fs/ioctl.c:595 [inline])
[<80d11aa0>] (mtdchar_unlocked_ioctl) from [<80591298>] (sys_ioctl+0x244/0xb5c fs/ioctl.c:583)
 r7:20000640 r6:00001269 r5:85fa60c1 r4:00000000
[<80591054>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xede21fa8 to 0xede21ff0)
1fa0:                   00000000 00000000 00000004 00001269 20000640 00000000
1fc0: 00000000 00000000 0012ed04 00000036 003462d8 00000000 00000001 76f540dc
1fe0: 76f53e88 76f53e78 00018bc4 00130300
 r10:00000036 r9:850d8000 r8:8020029c r7:00000036 r6:0012ed04 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..