syzbot

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BUG: KMSAN: use-after-free in mctp_dump_addrinfo+0x208/0xac0 net/mctp/device.c:128
 mctp_dump_addrinfo+0x208/0xac0 net/mctp/device.c:128
 rtnl_dump_all+0x3ec/0x5b0 net/core/rtnetlink.c:4380
 rtnl_dumpit+0xd5/0x2f0 net/core/rtnetlink.c:6824
 netlink_dump+0x97b/0x1690 net/netlink/af_netlink.c:2309
 __netlink_dump_start+0x716/0xd60 net/netlink/af_netlink.c:2424
 netlink_dump_start include/linux/netlink.h:340 [inline]
 rtnetlink_dump_start net/core/rtnetlink.c:6853 [inline]
 rtnetlink_rcv_msg+0x1262/0x14b0 net/core/rtnetlink.c:6920
 netlink_rcv_skb+0x54a/0x680 net/netlink/af_netlink.c:2534
 rtnetlink_rcv+0x35/0x40 net/core/rtnetlink.c:6982
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0xed5/0x1290 net/netlink/af_netlink.c:1339
 netlink_sendmsg+0x10b3/0x1250 net/netlink/af_netlink.c:1883
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x330/0x3d0 net/socket.c:727
 __sys_sendto+0x590/0x710 net/socket.c:2180
 __do_sys_sendto net/socket.c:2187 [inline]
 __se_sys_sendto net/socket.c:2183 [inline]
 __x64_sys_sendto+0x130/0x200 net/socket.c:2183
 x64_sys_call+0x3c0b/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x1b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_free_hook mm/slub.c:2324 [inline]
 slab_free mm/slub.c:4656 [inline]
 kmem_cache_free+0x286/0xf00 mm/slub.c:4758
 skb_kfree_head net/core/skbuff.c:1056 [inline]
 skb_free_head net/core/skbuff.c:1070 [inline]
 skb_release_data+0xe56/0x1110 net/core/skbuff.c:1097
 skb_release_all net/core/skbuff.c:1162 [inline]
 __kfree_skb+0x6b/0x260 net/core/skbuff.c:1176
 consume_skb+0x83/0x230 net/core/skbuff.c:1408
 unix_stream_connect+0x10ec/0x1c90 net/unix/af_unix.c:1694
 __sys_connect_file net/socket.c:2038 [inline]
 __sys_connect+0x523/0x680 net/socket.c:2057
 __do_sys_connect net/socket.c:2063 [inline]
 __se_sys_connect net/socket.c:2060 [inline]
 __x64_sys_connect+0x95/0x100 net/socket.c:2060
 x64_sys_call+0x23bb/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:43
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x1b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 5441 Comm: dhcpcd Not tainted 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
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