EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4153 at fs/mbcache.c:419 mb_cache_destroy+0xf8/0xfc fs/mbcache.c:419
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 PID: 4153 Comm: syz-executor.0 Not tainted 6.9.0-rc7-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: 
[<818a37fc>] (dump_backtrace) from [<818a38f8>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256)
 r7:00000000 r6:82622e44 r5:00000000 r4:81fcefc8
[<818a38e0>] (show_stack) from [<818c1034>] (__dump_stack lib/dump_stack.c:88 [inline])
[<818a38e0>] (show_stack) from [<818c1034>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114)
[<818c0fe0>] (dump_stack_lvl) from [<818c1074>] (dump_stack+0x18/0x1c lib/dump_stack.c:123)
 r5:00000000 r4:8285ad18
[<818c105c>] (dump_stack) from [<818a43a0>] (panic+0x120/0x358 kernel/panic.c:348)
[<818a4280>] (panic) from [<802436ac>] (check_panic_on_warn kernel/panic.c:241 [inline])
[<818a4280>] (panic) from [<802436ac>] (print_tainted+0x0/0xa0 kernel/panic.c:236)
 r3:8260c584 r2:00000001 r1:81fb7d08 r0:81fbf8ac
 r7:805808b8
[<80243638>] (check_panic_on_warn) from [<802438a0>] (__warn+0x7c/0x180 kernel/panic.c:694)
[<80243824>] (__warn) from [<80243b1c>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:719)
 r8:00000009 r7:81ff2404 r6:df9addc4 r5:84774800 r4:00000000
[<802439a8>] (warn_slowpath_fmt) from [<805808b8>] (mb_cache_destroy+0xf8/0xfc fs/mbcache.c:419)
 r10:000000f8 r9:00000100 r8:00000122 r7:85a31650 r6:85a31640 r5:85a31650
 r4:831f0960
[<805807c0>] (mb_cache_destroy) from [<806575c0>] (ext4_xattr_destroy_cache+0x18/0x1c fs/ext4/xattr.c:3222)
 r9:00000000 r8:00000000 r7:85a317c0 r6:853d5c00 r5:00000000 r4:851f4000
[<806575a8>] (ext4_xattr_destroy_cache) from [<80649670>] (ext4_put_super+0x23c/0x3d0 fs/ext4/super.c:1375)
[<80649434>] (ext4_put_super) from [<804fa044>] (generic_shutdown_super+0x80/0x100 fs/super.c:641)
 r8:8285b62c r7:00000000 r6:8260ca3c r5:81a2749c r4:853d5c00
[<804f9fc4>] (generic_shutdown_super) from [<804fa20c>] (kill_block_super+0x18/0x34 fs/super.c:1675)
 r5:8317c440 r4:853d5c00
[<804fa1f4>] (kill_block_super) from [<806430d8>] (ext4_kill_sb+0x20/0x3c fs/ext4/super.c:7327)
 r5:82723d58 r4:00000000
[<806430b8>] (ext4_kill_sb) from [<804fb174>] (deactivate_locked_super+0x54/0x104 fs/super.c:472)
 r5:82723d58 r4:853d5c00
[<804fb120>] (deactivate_locked_super) from [<804fb284>] (deactivate_super fs/super.c:505 [inline])
[<804fb120>] (deactivate_locked_super) from [<804fb284>] (deactivate_super+0x60/0x64 fs/super.c:501)
 r5:821a849c r4:853d5c00
[<804fb224>] (deactivate_super) from [<80522998>] (cleanup_mnt+0xec/0x178 fs/namespace.c:1267)
 r5:821a849c r4:84bf69c0
[<805228ac>] (cleanup_mnt) from [<80522a94>] (__cleanup_mnt+0x14/0x18 fs/namespace.c:1274)
 r7:84774800 r6:8477507c r5:8477504c r4:85007860
[<80522a80>] (__cleanup_mnt) from [<8026c8fc>] (task_work_run+0x90/0xb8 kernel/task_work.c:180)
[<8026c86c>] (task_work_run) from [<8024a01c>] (exit_task_work include/linux/task_work.h:38 [inline])
[<8026c86c>] (task_work_run) from [<8024a01c>] (do_exit+0x310/0xa84 kernel/exit.c:878)
 r9:00000000 r8:df9adf50 r7:83f46d7c r6:84775078 r5:83f46d00 r4:84774800
[<80249d0c>] (do_exit) from [<8024a95c>] (do_group_exit+0x40/0x8c kernel/exit.c:1027)
 r7:83f30fc0
[<8024a91c>] (do_group_exit) from [<8024a9c0>] (__do_sys_exit_group kernel/exit.c:1038 [inline])
[<8024a91c>] (do_group_exit) from [<8024a9c0>] (pid_child_should_wake+0x0/0x6c kernel/exit.c:1036)
 r7:000000f8 r4:00092df8
[<8024a9a8>] (sys_exit_group) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66)
Exception stack(0xdf9adfa8 to 0xdf9adff0)
dfa0:                   00092df8 00000027 00000000 00000000 00000000 000130f0
dfc0: 00092df8 00000027 000130f8 000000f8 00140000 000934a8 000934f4 00000000
dfe0: 7ead3390 7ead3380 00012b5c 00050c70
Rebooting in 86400 seconds..