==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
BUG: KASAN: null-ptr-deref in atomic_inc include/asm-generic/atomic-instrumented.h:240 [inline]
BUG: KASAN: null-ptr-deref in io_uring_cancel_sqpoll+0x320/0x510 fs/io_uring.c:8871
Write of size 4 at addr 0000000000000110 by task iou-sqp-12126/12128

CPU: 1 PID: 12128 Comm: iou-sqp-12126 Not tainted 5.12.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x125/0x19e lib/dump_stack.c:120
 __kasan_report mm/kasan/report.c:403 [inline]
 kasan_report+0x154/0x210 mm/kasan/report.c:416
 check_region_inline mm/kasan/generic.c:135 [inline]
 kasan_check_range+0x2b5/0x2f0 mm/kasan/generic.c:186
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic_inc include/asm-generic/atomic-instrumented.h:240 [inline]
 io_uring_cancel_sqpoll+0x320/0x510 fs/io_uring.c:8871
 io_sq_thread+0x12ac/0x1460 fs/io_uring.c:6782
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
==================================================================
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 12128 Comm: iou-sqp-12126 Tainted: G    B             5.12.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x125/0x19e lib/dump_stack.c:120
 panic+0x291/0x800 kernel/panic.c:231
 end_report mm/kasan/report.c:102 [inline]
 __kasan_report mm/kasan/report.c:406 [inline]
 kasan_report+0x203/0x210 mm/kasan/report.c:416
 check_region_inline mm/kasan/generic.c:135 [inline]
 kasan_check_range+0x2b5/0x2f0 mm/kasan/generic.c:186
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic_inc include/asm-generic/atomic-instrumented.h:240 [inline]
 io_uring_cancel_sqpoll+0x320/0x510 fs/io_uring.c:8871
 io_sq_thread+0x12ac/0x1460 fs/io_uring.c:6782
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Kernel Offset: disabled
Rebooting in 86400 seconds..