------------[ cut here ]------------
WARNING: CPU: 0 PID: 6542 at block/genhd.c:586 del_gendisk+0x690/0x724 block/genhd.c:586
Modules linked in:
CPU: 0 PID: 6542 Comm: syz.1.904 Not tainted 5.15.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : del_gendisk+0x690/0x724 block/genhd.c:586
lr : del_gendisk+0x690/0x724 block/genhd.c:586
sp : ffff800021cb7bc0
x29: ffff800021cb7be0 x28: ffff0000ce690000 x27: 1fffe0001b21e22a
x26: 1fffe0001ccb6890 x25: 1ffff00004396f88 x24: ffff0000e65b4480
x23: 0000000000000000 x22: ffff0000e65b44a0 x21: ffff0000e65b4400
x20: ffff0000c89c2aa8 x19: 0000000000000240 x18: 0000000000000000
x17: 0000000000000002 x16: ffff8000082eae24 x15: 0000000000004c82
x14: 1ffff0000296c06c x13: dfff800000000000 x12: 0000000000080000
x11: 0000000000000c8d x10: ffff800020e2b000 x9 : 0000000000000c8e
x8 : ffff80000a8df634 x7 : ffff80000c0f717c x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800011c133ec
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 del_gendisk+0x690/0x724 block/genhd.c:586
 loop_remove drivers/block/loop.c:2452 [inline]
 loop_control_remove drivers/block/loop.c:2509 [inline]
 loop_control_ioctl+0x4a8/0x62c drivers/block/loop.c:2547
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 126
hardirqs last  enabled at (125): [<ffff8000088d6348>] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231
hardirqs last disabled at (126): [<ffff800011b478f4>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (108): [<ffff8000080309b8>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (106): [<ffff800008030984>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
---[ end trace 1a0c9a86d981b453 ]---