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BUG: KMSAN: uninit-value in io_fixup_rw_res io_uring/rw.c:273 [inline]
BUG: KMSAN: uninit-value in io_rw_fail+0x1a7/0x1b0 io_uring/rw.c:996
 io_fixup_rw_res io_uring/rw.c:273 [inline]
 io_rw_fail+0x1a7/0x1b0 io_uring/rw.c:996
 io_req_defer_failed+0x217/0x3e0 io_uring/io_uring.c:1055
 io_queue_sqe_fallback+0x1f4/0x260 io_uring/io_uring.c:2090
 io_submit_sqe io_uring/io_uring.c:2318 [inline]
 io_submit_sqes+0x2496/0x2ff0 io_uring/io_uring.c:2438
 __do_sys_io_uring_enter io_uring/io_uring.c:3661 [inline]
 __se_sys_io_uring_enter+0x491/0x43f0 io_uring/io_uring.c:3595
 __ia32_sys_io_uring_enter+0x119/0x1a0 io_uring/io_uring.c:3595
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Uninit was created at:
 slab_post_alloc_hook+0x12f/0xb70 mm/slab.h:767
 slab_alloc_node mm/slub.c:3478 [inline]
 __kmem_cache_alloc_node+0x536/0x8d0 mm/slub.c:3517
 __do_kmalloc_node mm/slab_common.c:1022 [inline]
 __kmalloc+0x121/0x3c0 mm/slab_common.c:1036
 kmalloc include/linux/slab.h:603 [inline]
 io_alloc_async_data io_uring/io_uring.c:1770 [inline]
 io_req_prep_async+0x384/0x5a0 io_uring/io_uring.c:1791
 io_queue_sqe_fallback+0x95/0x260 io_uring/io_uring.c:2087
 io_submit_sqe io_uring/io_uring.c:2318 [inline]
 io_submit_sqes+0x2496/0x2ff0 io_uring/io_uring.c:2438
 __do_sys_io_uring_enter io_uring/io_uring.c:3661 [inline]
 __se_sys_io_uring_enter+0x491/0x43f0 io_uring/io_uring.c:3595
 __ia32_sys_io_uring_enter+0x119/0x1a0 io_uring/io_uring.c:3595
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

CPU: 1 PID: 7369 Comm: syz-executor.3 Not tainted 6.6.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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