===================================================== BUG: KMSAN: uninit-value in sctp_inq_pop+0x1597/0x1910 net/sctp/inqueue.c:205 sctp_inq_pop+0x1597/0x1910 net/sctp/inqueue.c:205 sctp_assoc_bh_rcv+0x1a7/0xc50 net/sctp/associola.c:997 sctp_inq_push+0x23e/0x2b0 net/sctp/inqueue.c:80 sctp_backlog_rcv+0x397/0xdb0 net/sctp/input.c:331 sk_backlog_rcv include/net/sock.h:1121 [inline] __release_sock+0x207/0x570 net/core/sock.c:2968 release_sock+0x6b/0x200 net/core/sock.c:3534 sctp_wait_for_connect+0x486/0x810 net/sctp/socket.c:9342 sctp_sendmsg_to_asoc+0x1ea7/0x1ee0 net/sctp/socket.c:1884 sctp_sendmsg+0x32b4/0x4a70 net/sctp/socket.c:2030 inet_sendmsg+0x105/0x190 net/ipv4/af_inet.c:847 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x781/0xa30 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto net/socket.c:2198 [inline] __x64_sys_sendto+0x125/0x1c0 net/socket.c:2198 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was stored to memory at: sctp_inq_pop+0x151a/0x1910 net/sctp/inqueue.c:201 sctp_assoc_bh_rcv+0x1a7/0xc50 net/sctp/associola.c:997 sctp_inq_push+0x23e/0x2b0 net/sctp/inqueue.c:80 sctp_backlog_rcv+0x397/0xdb0 net/sctp/input.c:331 sk_backlog_rcv include/net/sock.h:1121 [inline] __release_sock+0x207/0x570 net/core/sock.c:2968 release_sock+0x6b/0x200 net/core/sock.c:3534 sctp_wait_for_connect+0x486/0x810 net/sctp/socket.c:9342 sctp_sendmsg_to_asoc+0x1ea7/0x1ee0 net/sctp/socket.c:1884 sctp_sendmsg+0x32b4/0x4a70 net/sctp/socket.c:2030 inet_sendmsg+0x105/0x190 net/ipv4/af_inet.c:847 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x781/0xa30 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto net/socket.c:2198 [inline] __x64_sys_sendto+0x125/0x1c0 net/socket.c:2198 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x5e9/0xb10 mm/slub.c:3523 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560 __alloc_skb+0x318/0x740 net/core/skbuff.c:651 alloc_skb include/linux/skbuff.h:1286 [inline] sctp_packet_pack net/sctp/output.c:472 [inline] sctp_packet_transmit+0x1729/0x4150 net/sctp/output.c:621 sctp_outq_flush_transports net/sctp/outqueue.c:1173 [inline] sctp_outq_flush+0x1cde/0x5e70 net/sctp/outqueue.c:1221 sctp_outq_uncork+0x9c/0xb0 net/sctp/outqueue.c:764 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline] sctp_do_sm+0x8c1a/0x9380 net/sctp/sm_sideeffect.c:1169 sctp_assoc_bh_rcv+0x8fe/0xc50 net/sctp/associola.c:1051 sctp_inq_push+0x23e/0x2b0 net/sctp/inqueue.c:80 sctp_backlog_rcv+0x397/0xdb0 net/sctp/input.c:331 sk_backlog_rcv include/net/sock.h:1121 [inline] __release_sock+0x207/0x570 net/core/sock.c:2968 release_sock+0x6b/0x200 net/core/sock.c:3534 sctp_wait_for_connect+0x486/0x810 net/sctp/socket.c:9342 sctp_sendmsg_to_asoc+0x1ea7/0x1ee0 net/sctp/socket.c:1884 sctp_sendmsg+0x32b4/0x4a70 net/sctp/socket.c:2030 inet_sendmsg+0x105/0x190 net/ipv4/af_inet.c:847 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x781/0xa30 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto net/socket.c:2198 [inline] __x64_sys_sendto+0x125/0x1c0 net/socket.c:2198 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b CPU: 1 PID: 16035 Comm: syz-executor.3 Not tainted 6.7.0-rc6-syzkaller-00010-g2cf4f94d8e86 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 =====================================================