=====================================================
BUG: KMSAN: uninit-value in batadv_get_vid+0x1b6/0x2e0 net/batman-adv/main.c:629
 batadv_get_vid+0x1b6/0x2e0 net/batman-adv/main.c:629
 batadv_interface_tx+0x2f7/0x2040 net/batman-adv/soft-interface.c:212
 __netdev_start_xmit include/linux/netdevice.h:4863 [inline]
 netdev_start_xmit include/linux/netdevice.h:4877 [inline]
 xmit_one net/core/dev.c:3575 [inline]
 dev_hard_start_xmit+0x253/0xa20 net/core/dev.c:3591
 __dev_queue_xmit+0x3c7f/0x5ac0 net/core/dev.c:4241
 dev_queue_xmit include/linux/netdevice.h:3033 [inline]
 __bpf_tx_skb net/core/filter.c:2117 [inline]
 __bpf_redirect_common net/core/filter.c:2161 [inline]
 __bpf_redirect+0x140b/0x15f0 net/core/filter.c:2168
 ____bpf_clone_redirect net/core/filter.c:2437 [inline]
 bpf_clone_redirect+0x328/0x470 net/core/filter.c:2409
 ___bpf_prog_run+0x805/0xb260 kernel/bpf/core.c:1820
 __bpf_prog_run512+0xc6/0x110 kernel/bpf/core.c:2045
 bpf_dispatcher_nop_func include/linux/bpf.h:1082 [inline]
 __bpf_prog_run include/linux/filter.h:600 [inline]
 bpf_prog_run include/linux/filter.h:607 [inline]
 bpf_test_run+0x47a/0xcb0 net/bpf/test_run.c:402
 bpf_prog_test_run_skb+0x1529/0x1f70 net/bpf/test_run.c:1187
 bpf_prog_test_run+0x6d5/0xaf0 kernel/bpf/syscall.c:3634
 __sys_bpf+0x87d/0x1130 kernel/bpf/syscall.c:4987
 __do_sys_bpf kernel/bpf/syscall.c:5073 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5071 [inline]
 __ia32_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5071
 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+0x12d/0xb60 mm/slab.h:766
 slab_alloc_node mm/slub.c:3452 [inline]
 __kmem_cache_alloc_node+0x518/0x920 mm/slub.c:3491
 __do_kmalloc_node mm/slab_common.c:967 [inline]
 __kmalloc_node_track_caller+0x118/0x3c0 mm/slab_common.c:988
 kmalloc_reserve net/core/skbuff.c:492 [inline]
 pskb_expand_head+0x274/0x19b0 net/core/skbuff.c:1899
 skb_ensure_writable+0x3d3/0x460 net/core/skbuff.c:5811
 __bpf_try_make_writable net/core/filter.c:1658 [inline]
 bpf_try_make_writable net/core/filter.c:1664 [inline]
 bpf_try_make_head_writable net/core/filter.c:1672 [inline]
 ____bpf_clone_redirect net/core/filter.c:2431 [inline]
 bpf_clone_redirect+0x17f/0x470 net/core/filter.c:2409
 ___bpf_prog_run+0x805/0xb260 kernel/bpf/core.c:1820
 __bpf_prog_run512+0xc6/0x110 kernel/bpf/core.c:2045
 bpf_dispatcher_nop_func include/linux/bpf.h:1082 [inline]
 __bpf_prog_run include/linux/filter.h:600 [inline]
 bpf_prog_run include/linux/filter.h:607 [inline]
 bpf_test_run+0x47a/0xcb0 net/bpf/test_run.c:402
 bpf_prog_test_run_skb+0x1529/0x1f70 net/bpf/test_run.c:1187
 bpf_prog_test_run+0x6d5/0xaf0 kernel/bpf/syscall.c:3634
 __sys_bpf+0x87d/0x1130 kernel/bpf/syscall.c:4987
 __do_sys_bpf kernel/bpf/syscall.c:5073 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5071 [inline]
 __ia32_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5071
 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: 7861 Comm: syz-executor.3 Not tainted 6.2.0-syzkaller-81157-g944070199c5e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
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