syzbot

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BUG: KMSAN: uninit-value in macsec_handle_frame+0x2f0/0x54c0 drivers/net/macsec.c:1148
 macsec_handle_frame+0x2f0/0x54c0 drivers/net/macsec.c:1148
 __netif_receive_skb_core+0xeb0/0x4c70 net/core/dev.c:6039
 __netif_receive_skb_one_core net/core/dev.c:6150 [inline]
 __netif_receive_skb net/core/dev.c:6265 [inline]
 process_backlog+0x514/0x1500 net/core/dev.c:6617
 __napi_poll+0xdc/0x8f0 net/core/dev.c:7681
 napi_poll net/core/dev.c:7744 [inline]
 net_rx_action+0xa5b/0x1c70 net/core/dev.c:7896
 handle_softirqs+0x168/0x6f0 kernel/softirq.c:622
 __do_softirq+0x14/0x1b kernel/softirq.c:656
 do_softirq+0x58/0x90 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:5718
 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+0x575/0xd20 net/phonet/socket.c:255
 __sys_connect_file net/socket.c:2089 [inline]
 __sys_connect+0x519/0x680 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+0xc9/0xf80 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+0x9de/0x1780 mm/slub.c:5315
 kmalloc_reserve+0x13c/0x4b0 net/core/skbuff.c:586
 __alloc_skb+0x805/0x1030 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+0x1479/0x1830 net/phonet/af_phonet.c:409
 __netif_receive_skb_one_core net/core/dev.c:6152 [inline]
 __netif_receive_skb net/core/dev.c:6265 [inline]
 process_backlog+0x9a0/0x1500 net/core/dev.c:6617
 __napi_poll+0xdc/0x8f0 net/core/dev.c:7681
 napi_poll net/core/dev.c:7744 [inline]
 net_rx_action+0xa5b/0x1c70 net/core/dev.c:7896
 handle_softirqs+0x168/0x6f0 kernel/softirq.c:622
 __do_softirq+0x14/0x1b kernel/softirq.c:656

CPU: 1 UID: 0 PID: 7775 Comm: syz.4.412 Tainted: G             L      syzkaller #0 PREEMPT(voluntary) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
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