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BUG: KMSAN: uninit-value in io_recv_buf_select io_uring/net.c:1094 [inline]
BUG: KMSAN: uninit-value in io_recv+0x930/0x1f90 io_uring/net.c:1158
 io_recv_buf_select io_uring/net.c:1094 [inline]
 io_recv+0x930/0x1f90 io_uring/net.c:1158
 io_issue_sqe+0x420/0x2130 io_uring/io_uring.c:1740
 io_queue_sqe io_uring/io_uring.c:1950 [inline]
 io_submit_sqe io_uring/io_uring.c:2205 [inline]
 io_submit_sqes+0x11bc/0x2f80 io_uring/io_uring.c:2322
 __do_sys_io_uring_enter io_uring/io_uring.c:3395 [inline]
 __se_sys_io_uring_enter+0x409/0x4ce0 io_uring/io_uring.c:3330
 __x64_sys_io_uring_enter+0x11f/0x1a0 io_uring/io_uring.c:3330
 x64_sys_call+0xce5/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:427
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4125 [inline]
 slab_alloc_node mm/slub.c:4168 [inline]
 __do_kmalloc_node mm/slub.c:4297 [inline]
 __kmalloc_noprof+0x923/0x1230 mm/slub.c:4310
 kmalloc_noprof include/linux/slab.h:905 [inline]
 io_alloc_async_data+0xc0/0x220 io_uring/io_uring.c:1651
 io_msg_alloc_async io_uring/net.c:175 [inline]
 io_recvmsg_prep_setup io_uring/net.c:750 [inline]
 io_recvmsg_prep+0xbe8/0x1a20 io_uring/net.c:831
 io_init_req io_uring/io_uring.c:2120 [inline]
 io_submit_sqe io_uring/io_uring.c:2167 [inline]
 io_submit_sqes+0x1082/0x2f80 io_uring/io_uring.c:2322
 __do_sys_io_uring_enter io_uring/io_uring.c:3395 [inline]
 __se_sys_io_uring_enter+0x409/0x4ce0 io_uring/io_uring.c:3330
 __x64_sys_io_uring_enter+0x11f/0x1a0 io_uring/io_uring.c:3330
 x64_sys_call+0xce5/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:427
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 5997 Comm: syz.1.11 Not tainted 6.13.0-rc4-syzkaller-00071-gfd0584d220fe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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