=====================================================
BUG: KMSAN: uninit-value in sctp_assoc_bh_rcv+0x38e/0xc50 net/sctp/associola.c:1005
 sctp_assoc_bh_rcv+0x38e/0xc50 net/sctp/associola.c:1005
 sctp_inq_push+0x2ef/0x380 net/sctp/inqueue.c:88
 sctp_backlog_rcv+0x397/0xdb0 net/sctp/input.c:331
 sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1126
 __release_sock+0x1da/0x330 net/core/sock.c:3158
 release_sock+0x6b/0x250 net/core/sock.c:3712
 sctp_wait_for_connect+0x487/0x820 net/sctp/socket.c:9360
 sctp_sendmsg_to_asoc+0x1ec1/0x1f00 net/sctp/socket.c:1885
 sctp_sendmsg+0x32b9/0x4a90 net/sctp/socket.c:2031
 inet_sendmsg+0x25a/0x280 net/ipv4/af_inet.c:851
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x267/0x380 net/socket.c:727
 __sys_sendto+0x594/0x750 net/socket.c:2180
 __do_sys_sendto net/socket.c:2187 [inline]
 __se_sys_sendto net/socket.c:2183 [inline]
 __ia32_sys_sendto+0x123/0x1c0 net/socket.c:2183
 ia32_sys_call+0xca8/0x41f0 arch/x86/include/generated/asm/syscalls_32.h:370
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Uninit was created at:
 __alloc_frozen_pages_noprof+0x6a0/0xe30 mm/page_alloc.c:4957
 alloc_pages_mpol+0x4cd/0x890 mm/mempolicy.c:2301
 alloc_frozen_pages_noprof+0x1bf/0x1e0 mm/mempolicy.c:2372
 alloc_slab_page mm/slub.c:2459 [inline]
 allocate_slab+0x23a/0x1110 mm/slub.c:2623
 new_slab mm/slub.c:2676 [inline]
 ___slab_alloc+0x128a/0x3550 mm/slub.c:3862
 __slab_alloc mm/slub.c:3952 [inline]
 __slab_alloc_node mm/slub.c:4027 [inline]
 slab_alloc_node mm/slub.c:4188 [inline]
 __do_kmalloc_node mm/slub.c:4330 [inline]
 __kmalloc_node_track_caller_noprof+0xa9e/0x1260 mm/slub.c:4350
 kmalloc_reserve+0x23e/0x4a0 net/core/skbuff.c:599
 __alloc_skb+0x366/0x7b0 net/core/skbuff.c:668
 alloc_skb include/linux/skbuff.h:1340 [inline]
 nlmsg_new include/net/netlink.h:1019 [inline]
 br_info_notify+0xf4/0x390 net/bridge/br_netlink.c:647
 br_ifinfo_notify+0x31/0x40 net/bridge/br_netlink.c:670
 br_add_if+0x1824/0x1910 net/bridge/br_if.c:690
 br_add_slave+0x46/0x60 net/bridge/br_device.c:375
 do_set_master+0x92a/0xb50 net/core/rtnetlink.c:2946
 do_setlink+0x1d1b/0x70a0 net/core/rtnetlink.c:3159
 rtnl_changelink net/core/rtnetlink.c:3769 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3928 [inline]
 rtnl_newlink+0x2a3c/0x3880 net/core/rtnetlink.c:4065
 rtnetlink_rcv_msg+0x1067/0x1420 net/core/rtnetlink.c:6955
 netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2534
 rtnetlink_rcv+0x34/0x40 net/core/rtnetlink.c:6982
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1339
 netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1883
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x30f/0x380 net/socket.c:727
 __sys_sendto+0x594/0x750 net/socket.c:2180
 __do_compat_sys_socketcall net/compat.c:475 [inline]
 __se_compat_sys_socketcall+0xceb/0x1a30 net/compat.c:423
 __ia32_compat_sys_socketcall+0x6b/0xa0 net/compat.c:423
 ia32_sys_call+0x3c1f/0x41f0 arch/x86/include/generated/asm/syscalls_32.h:103
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

CPU: 0 UID: 0 PID: 17661 Comm: syz.6.3720 Not tainted 6.14.0-syzkaller-12508-g92b71befc349 #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
=====================================================