syzbot

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BUG: KMSAN: uninit-value in sctp_inq_pop+0x15b7/0x1920 net/sctp/inqueue.c:211
 sctp_inq_pop+0x15b7/0x1920 net/sctp/inqueue.c:211
 sctp_assoc_bh_rcv+0x1a7/0xc50 net/sctp/associola.c:998
 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:1122
 __release_sock+0x1da/0x330 net/core/sock.c:3106
 release_sock+0x6b/0x250 net/core/sock.c:3660
 sctp_wait_for_connect+0x487/0x820 net/sctp/socket.c:9360
 sctp_sendmsg_to_asoc+0x1ec1/0x1f00 net/sctp/socket.c:1885
 sctp_sendmsg+0x32b9/0x4a80 net/sctp/socket.c:2031
 inet_sendmsg+0x25a/0x280 net/ipv4/af_inet.c:851
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg+0x267/0x380 net/socket.c:733
 __sys_sendto+0x594/0x750 net/socket.c:2187
 __do_sys_sendto net/socket.c:2194 [inline]
 __se_sys_sendto net/socket.c:2190 [inline]
 __x64_sys_sendto+0x125/0x1d0 net/socket.c:2190
 x64_sys_call+0x346a/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 sctp_inq_pop+0x153e/0x1920 net/sctp/inqueue.c:207
 sctp_assoc_bh_rcv+0x1a7/0xc50 net/sctp/associola.c:998
 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:1122
 __release_sock+0x1da/0x330 net/core/sock.c:3106
 release_sock+0x6b/0x250 net/core/sock.c:3660
 sctp_wait_for_connect+0x487/0x820 net/sctp/socket.c:9360
 sctp_sendmsg_to_asoc+0x1ec1/0x1f00 net/sctp/socket.c:1885
 sctp_sendmsg+0x32b9/0x4a80 net/sctp/socket.c:2031
 inet_sendmsg+0x25a/0x280 net/ipv4/af_inet.c:851
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg+0x267/0x380 net/socket.c:733
 __sys_sendto+0x594/0x750 net/socket.c:2187
 __do_sys_sendto net/socket.c:2194 [inline]
 __se_sys_sendto net/socket.c:2190 [inline]
 __x64_sys_sendto+0x125/0x1d0 net/socket.c:2190
 x64_sys_call+0x346a/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4121 [inline]
 slab_alloc_node mm/slub.c:4164 [inline]
 __do_kmalloc_node mm/slub.c:4293 [inline]
 __kmalloc_node_track_caller_noprof+0x945/0x1240 mm/slub.c:4313
 kmalloc_reserve+0x23e/0x4a0 net/core/skbuff.c:609
 __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678
 alloc_skb include/linux/skbuff.h:1331 [inline]
 sctp_packet_pack net/sctp/output.c:472 [inline]
 sctp_packet_transmit+0x17fa/0x43a0 net/sctp/output.c:621
 sctp_outq_flush_transports net/sctp/outqueue.c:1173 [inline]
 sctp_outq_flush+0x1b2f/0x6590 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+0x8c49/0x93d0 net/sctp/sm_sideeffect.c:1169
 sctp_assoc_bh_rcv+0x8fe/0xc50 net/sctp/associola.c:1052
 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:1122
 __release_sock+0x1da/0x330 net/core/sock.c:3106
 release_sock+0x6b/0x250 net/core/sock.c:3660
 sctp_wait_for_connect+0x487/0x820 net/sctp/socket.c:9360
 sctp_sendmsg_to_asoc+0x1ec1/0x1f00 net/sctp/socket.c:1885
 sctp_sendmsg+0x32b9/0x4a80 net/sctp/socket.c:2031
 inet_sendmsg+0x25a/0x280 net/ipv4/af_inet.c:851
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg+0x267/0x380 net/socket.c:733
 __sys_sendto+0x594/0x750 net/socket.c:2187
 __do_sys_sendto net/socket.c:2194 [inline]
 __se_sys_sendto net/socket.c:2190 [inline]
 __x64_sys_sendto+0x125/0x1d0 net/socket.c:2190
 x64_sys_call+0x346a/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 5785 Comm: syz-executor966 Not tainted 6.14.0-rc2-syzkaller-00056-gab68d7eb7b1a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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