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BUG: KMSAN: uninit-value in io_fixup_rw_res io_uring/rw.c:277 [inline]
BUG: KMSAN: uninit-value in io_rw_fail+0x1a3/0x1b0 io_uring/rw.c:988
 io_fixup_rw_res io_uring/rw.c:277 [inline]
 io_rw_fail+0x1a3/0x1b0 io_uring/rw.c:988
 io_req_complete_failed+0x1fe/0x4b0 io_uring/io_uring.c:885
 io_queue_sqe_fallback+0x218/0x250 io_uring/io_uring.c:1945
 io_submit_sqe+0x185b/0x1be0 io_uring/io_uring.c:2169
 io_submit_sqes+0x542/0xd50 io_uring/io_uring.c:2285
 __do_sys_io_uring_enter io_uring/io_uring.c:3220 [inline]
 __se_sys_io_uring_enter+0x4d6/0x2210 io_uring/io_uring.c:3152
 __x64_sys_io_uring_enter+0x117/0x190 io_uring/io_uring.c:3152
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:742 [inline]
 slab_alloc_node mm/slub.c:3398 [inline]
 __kmem_cache_alloc_node+0x6ee/0xc90 mm/slub.c:3437
 __do_kmalloc_node mm/slab_common.c:954 [inline]
 __kmalloc+0x11d/0x3c0 mm/slab_common.c:968
 kmalloc include/linux/slab.h:558 [inline]
 io_alloc_async_data io_uring/io_uring.c:1600 [inline]
 io_req_prep_async+0x356/0x590 io_uring/io_uring.c:1620
 io_queue_sqe_fallback+0xfd/0x250 io_uring/io_uring.c:1942
 io_submit_sqe+0x185b/0x1be0 io_uring/io_uring.c:2169
 io_submit_sqes+0x542/0xd50 io_uring/io_uring.c:2285
 __do_sys_io_uring_enter io_uring/io_uring.c:3220 [inline]
 __se_sys_io_uring_enter+0x4d6/0x2210 io_uring/io_uring.c:3152
 __x64_sys_io_uring_enter+0x117/0x190 io_uring/io_uring.c:3152
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

CPU: 0 PID: 3485 Comm: syz-executor343 Not tainted 6.1.0-rc8-syzkaller-64144-g30d2727189c5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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