syzbot

=====================================================
BUG: KMSAN: uninit-value in macsec_handle_frame+0x2f6/0x5410 drivers/net/macsec.c:1148
 macsec_handle_frame+0x2f6/0x5410 drivers/net/macsec.c:1148
 __netif_receive_skb_core+0xf8c/0x4d10 net/core/dev.c:6024
 __netif_receive_skb_one_core net/core/dev.c:6135 [inline]
 __netif_receive_skb+0xcc/0xac0 net/core/dev.c:6250
 process_backlog+0x47c/0x9f0 net/core/dev.c:6602
 __napi_poll+0xd8/0x880 net/core/dev.c:7666
 napi_poll net/core/dev.c:7729 [inline]
 net_rx_action+0xa3f/0x1c90 net/core/dev.c:7881
 handle_softirqs+0x169/0x6e0 kernel/softirq.c:622
 __do_softirq+0x14/0x1b kernel/softirq.c:656
 do_softirq+0x99/0x100 kernel/softirq.c:523
 __local_bh_enable_ip+0xa1/0xb0 kernel/softirq.c:450
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 netif_rx+0xdb/0x3f0 net/core/dev.c:5703
 pn_send+0x95b/0xb80 net/phonet/af_phonet.c:185
 pn_skb_send+0x462/0xa70 net/phonet/af_phonet.c:272
 pipe_handler_request net/phonet/pep.c:144 [inline]
 pep_sock_connect+0x2af/0x490 net/phonet/pep.c:895
 pn_socket_connect+0x576/0xd10 net/phonet/socket.c:255
 __sys_connect_file net/socket.c:2089 [inline]
 __sys_connect+0x51a/0x680 net/socket.c:2108
 __do_sys_connect net/socket.c:2114 [inline]
 __se_sys_connect net/socket.c:2111 [inline]
 __x64_sys_connect+0x95/0x100 net/socket.c:2111
 x64_sys_call+0x3afb/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:43
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4960 [inline]
 slab_alloc_node mm/slub.c:5263 [inline]
 kmem_cache_alloc_node_noprof+0x9e7/0x17a0 mm/slub.c:5315
 kmalloc_reserve+0x13c/0x4b0 net/core/skbuff.c:586
 __alloc_skb+0x866/0x10a0 net/core/skbuff.c:690
 alloc_skb include/linux/skbuff.h:1383 [inline]
 pn_raw_send+0x59/0x510 net/phonet/af_phonet.c:207
 send_reset_indications+0x139/0x1c0 net/phonet/af_phonet.c:344
 phonet_rcv+0x1478/0x1830 net/phonet/af_phonet.c:409
 __netif_receive_skb_one_core net/core/dev.c:6137 [inline]
 __netif_receive_skb+0x477/0xac0 net/core/dev.c:6250
 process_backlog+0x47c/0x9f0 net/core/dev.c:6602
 __napi_poll+0xd8/0x880 net/core/dev.c:7666
 napi_poll net/core/dev.c:7729 [inline]
 net_rx_action+0xa3f/0x1c90 net/core/dev.c:7881
 handle_softirqs+0x169/0x6e0 kernel/softirq.c:622
 __do_softirq+0x14/0x1b kernel/softirq.c:656

CPU: 1 UID: 0 PID: 7991 Comm: syz.4.434 Not tainted syzkaller #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
=====================================================