loop0: detected capacity change from 0 to 128
BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/5740
caller is debug_smp_processor_id+0x20/0x24 lib/smp_processor_id.c:64
CPU: 0 PID: 5740 Comm: syz-executor.0 Not tainted 5.12.0-rc2-syzkaller #0
Hardware name: ARM-Versatile Express
Backtrace: 
[<82740468>] (dump_backtrace) from [<827406dc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:252)
 r7:00000000 r6:60000113 r5:00000000 r4:8422a3c4
[<827406c4>] (show_stack) from [<82751b58>] (__dump_stack lib/dump_stack.c:79 [inline])
[<827406c4>] (show_stack) from [<82751b58>] (dump_stack+0xb8/0xe8 lib/dump_stack.c:120)
[<82751aa0>] (dump_stack) from [<82773f68>] (check_preemption_disabled+0x118/0x11c lib/smp_processor_id.c:53)
 r7:8303b584 r6:00000000 r5:82773f8c r4:8a1ac630
[<82773e50>] (check_preemption_disabled) from [<82773f8c>] (debug_smp_processor_id+0x20/0x24 lib/smp_processor_id.c:64)
 r7:00000207 r6:8a1ac100 r5:0000000b r4:ffffffff
[<82773f6c>] (debug_smp_processor_id) from [<80217a00>] (harden_branch_predictor arch/arm/include/asm/system_misc.h:24 [inline])
[<82773f6c>] (debug_smp_processor_id) from [<80217a00>] (__do_user_fault+0x98/0x108 arch/arm/mm/fault.c:142)
[<80217968>] (__do_user_fault) from [<80217c90>] (do_page_fault+0x190/0x378 arch/arm/mm/fault.c:357)
 r9:00000000 r8:8522b4bc r7:8522b440 r6:00000207 r5:ffffffff r4:8b13ffb0
[<80217b00>] (do_page_fault) from [<80218054>] (do_DataAbort+0x38/0xb8 arch/arm/mm/fault.c:522)
 r10:766c3ee0 r9:20000400 r8:80217b00 r7:8b13ffb0 r6:ffffffff r5:00000207
 r4:84063c78
[<8021801c>] (do_DataAbort) from [<80200dc4>] (__dabt_usr+0x44/0x60 arch/arm/kernel/entry-armv.S:421)
Exception stack(0x8b13ffb0 to 0x8b13fff8)
ffa0:                                     ffffffff 000a1614 00000000 3078303d
ffc0: 766c3f20 ffffffff 20000280 20000040 766c3ee0 20000400 766c3ee0 00000000
ffe0: 00000073 766c3ea0 000162b0 00045dc8 60000010 ffffffff
 r8:30c5387d r7:30c5387d r6:ffffffff r5:60000010 r4:00045dc8