------------[ cut here ]------------
WARNING: CPU: 1 PID: 20867 at block/genhd.c:589 del_gendisk+0x698/0x72c block/genhd.c:589
Modules linked in:
CPU: 1 PID: 20867 Comm: syz-executor.1 Not tainted 5.15.138-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : del_gendisk+0x698/0x72c block/genhd.c:589
lr : del_gendisk+0x698/0x72c block/genhd.c:589
sp : ffff80001f9e7bc0
x29: ffff80001f9e7be0 x28: ffff00011eac8000 x27: 1fffe00019f6982a
x26: 1fffe00022279810 x25: 1ffff00003f3cf88 x24: ffff0001113cc080
x23: 0000000000000000 x22: ffff0001113cc0a0 x21: ffff0001113cc000
x20: ffff0000ccfe2aa8 x19: 0000000000000240 x18: 0000000000000000
x17: ff8080000c02bfe4 x16: ffff8000082e99b0 x15: ffff80000c02bfe4
x14: 1ffff0000292406a x13: ffffffffffffffff x12: 0000000000040000
x11: 0000000000000c3a x10: ffff80002170c000 x9 : ffff80000a82ea44
x8 : 0000000000000c3b x7 : ffff80000c02c24c x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800011a3ab14
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 del_gendisk+0x698/0x72c block/genhd.c:589
 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: 140
hardirqs last  enabled at (139): [<ffff8000088ce2fc>] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231
hardirqs last disabled at (140): [<ffff8000119707c0>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (122): [<ffff8000080300b4>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (120): [<ffff800008030080>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
---[ end trace 6de37fcc3e858f5e ]---