=====================================================
BUG: KMSAN: uninit-value in trace_9p_client_res include/trace/events/9p.h:146 [inline]
BUG: KMSAN: uninit-value in p9_client_rpc+0x12e7/0x1310 net/9p/client.c:752
 trace_9p_client_res include/trace/events/9p.h:146 [inline]
 p9_client_rpc+0x12e7/0x1310 net/9p/client.c:752
 p9_client_create+0x154b/0x1fe0 net/9p/client.c:1030
 v9fs_session_init+0x1b2/0x27f0 fs/9p/v9fs.c:410
 v9fs_mount+0xe0/0x1750 fs/9p/vfs_super.c:123
 legacy_get_tree+0x110/0x290 fs/fs_context.c:610
 vfs_get_tree+0xa5/0x500 fs/super.c:1510
 do_new_mount+0x68d/0x1540 fs/namespace.c:3039
 path_mount+0x725/0x1ee0 fs/namespace.c:3369
 do_mount fs/namespace.c:3382 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x725/0x810 fs/namespace.c:3568
 __ia32_sys_mount+0xe3/0x150 fs/namespace.c:3568
 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:
 __alloc_pages+0x9a4/0xe00 mm/page_alloc.c:4791
 alloc_pages+0xd01/0x1040
 alloc_slab_page mm/slub.c:1851 [inline]
 allocate_slab mm/slub.c:1998 [inline]
 new_slab+0x41e/0x1580 mm/slub.c:2051
 ___slab_alloc+0x10f9/0x3100 mm/slub.c:3192
 __slab_alloc mm/slub.c:3291 [inline]
 __slab_alloc_node mm/slub.c:3344 [inline]
 slab_alloc_node mm/slub.c:3441 [inline]
 slab_alloc mm/slub.c:3459 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3466 [inline]
 kmem_cache_alloc+0x592/0x9b0 mm/slub.c:3475
 p9_tag_alloc net/9p/client.c:278 [inline]
 p9_client_prepare_req+0x20a/0x1770 net/9p/client.c:639
 p9_client_rpc+0x276/0x1310 net/9p/client.c:686
 p9_client_create+0x154b/0x1fe0 net/9p/client.c:1030
 v9fs_session_init+0x1b2/0x27f0 fs/9p/v9fs.c:410
 v9fs_mount+0xe0/0x1750 fs/9p/vfs_super.c:123
 legacy_get_tree+0x110/0x290 fs/fs_context.c:610
 vfs_get_tree+0xa5/0x500 fs/super.c:1510
 do_new_mount+0x68d/0x1540 fs/namespace.c:3039
 path_mount+0x725/0x1ee0 fs/namespace.c:3369
 do_mount fs/namespace.c:3382 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x725/0x810 fs/namespace.c:3568
 __ia32_sys_mount+0xe3/0x150 fs/namespace.c:3568
 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: 0 PID: 22925 Comm: syz-executor.0 Not tainted 6.4.0-rc4-syzkaller-g2741f1b02117 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
=====================================================