=====================================================
BUG: KMSAN: uninit-value in sctp_inq_pop+0x14dc/0x19e0 net/sctp/inqueue.c:211
 sctp_inq_pop+0x14dc/0x19e0 net/sctp/inqueue.c:211
 sctp_assoc_bh_rcv+0x1a0/0xbc0 net/sctp/associola.c:980
 sctp_inq_push+0x2a6/0x350 net/sctp/inqueue.c:88
 sctp_backlog_rcv+0x3c7/0xda0 net/sctp/input.c:331
 sk_backlog_rcv+0x142/0x420 include/net/sock.h:1148
 __release_sock+0x1d3/0x330 net/core/sock.c:3194
 release_sock+0x6b/0x270 net/core/sock.c:3748
 sctp_wait_for_connect+0x458/0x820 net/sctp/socket.c:9367
 sctp_sendmsg_to_asoc+0x223a/0x2260 net/sctp/socket.c:1886
 sctp_sendmsg+0x3910/0x49f0 net/sctp/socket.c:2032
 inet_sendmsg+0x26c/0x2a0 net/ipv4/af_inet.c:851
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0x278/0x3d0 net/socket.c:729
 __sys_sendto+0x593/0x720 net/socket.c:2228
 __do_sys_sendto net/socket.c:2235 [inline]
 __se_sys_sendto net/socket.c:2231 [inline]
 __x64_sys_sendto+0x130/0x200 net/socket.c:2231
 x64_sys_call+0x3910/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 9930 at kernel/stacktrace.c:29 stack_trace_print+0xd4/0xf0 kernel/stacktrace.c:29
Modules linked in:
CPU: 1 UID: 0 PID: 9930 Comm: syz.2.1417 Tainted: G        W           6.17.0-rc1-syzkaller #0 PREEMPT(none) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:stack_trace_print+0xd4/0xf0 kernel/stacktrace.c:29
Code: 92 e4 23 92 89 de ba 20 00 00 00 4c 89 e1 e8 43 25 4d ff 49 83 c6 08 49 ff cd 0f 85 6e ff ff ff eb 0b e8 3f 8e c3 00 eb d4 90 <0f> 0b 90 5b 41 5c 41 5d 41 5e 41 5f 5d e9 9a 61 0c 0f cc 66 0f 1f
RSP: 0018:ffff8880766ef0d8 EFLAGS: 00010246
RAX: ffff88811a80ac20 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880766ef100 R08: 0000000000000000 R09: 0000000000000000
R10: ffff888075eef118 R11: 0000000000000001 R12: 0000000000000000
R13: 00000000abcd0100 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f82f18e46c0(0000) GS:ffff8881aa798000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f277d1c3fe8 CR3: 0000000075bba000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 kmsan_print_origin+0xb0/0x340 mm/kmsan/report.c:133
 kmsan_report+0x1d3/0x320 mm/kmsan/report.c:196
 __msan_warning+0x1b/0x30 mm/kmsan/instrumentation.c:315
 sctp_inq_pop+0x14dc/0x19e0 net/sctp/inqueue.c:211
 sctp_assoc_bh_rcv+0x1a0/0xbc0 net/sctp/associola.c:980
 sctp_inq_push+0x2a6/0x350 net/sctp/inqueue.c:88
 sctp_backlog_rcv+0x3c7/0xda0 net/sctp/input.c:331
 sk_backlog_rcv+0x142/0x420 include/net/sock.h:1148
 __release_sock+0x1d3/0x330 net/core/sock.c:3194
 release_sock+0x6b/0x270 net/core/sock.c:3748
 sctp_wait_for_connect+0x458/0x820 net/sctp/socket.c:9367
 sctp_sendmsg_to_asoc+0x223a/0x2260 net/sctp/socket.c:1886
 sctp_sendmsg+0x3910/0x49f0 net/sctp/socket.c:2032
 inet_sendmsg+0x26c/0x2a0 net/ipv4/af_inet.c:851
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0x278/0x3d0 net/socket.c:729
 __sys_sendto+0x593/0x720 net/socket.c:2228
 __do_sys_sendto net/socket.c:2235 [inline]
 __se_sys_sendto net/socket.c:2231 [inline]
 __x64_sys_sendto+0x130/0x200 net/socket.c:2231
 x64_sys_call+0x3910/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f82f098ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f82f18e4038 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f82f0bb5fa0 RCX: 00007f82f098ebe9
RDX: 000000000000fee4 RSI: 0000200000847fff RDI: 0000000000000007
RBP: 00007f82f0a11e19 R08: 000020000005ffe4 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f82f0bb6038 R14: 00007f82f0bb5fa0 R15: 00007ffe5a0d9958
 </TASK>
---[ end trace 0000000000000000 ]---

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4186 [inline]
 slab_alloc_node mm/slub.c:4229 [inline]
 __do_kmalloc_node mm/slub.c:4364 [inline]
 __kmalloc_node_track_caller_noprof+0x96d/0x12f0 mm/slub.c:4384
 kmalloc_reserve+0x22f/0x4b0 net/core/skbuff.c:600
 __alloc_skb+0x347/0x7d0 net/core/skbuff.c:669
 alloc_skb include/linux/skbuff.h:1336 [inline]
 sctp_packet_pack net/sctp/output.c:472 [inline]
 sctp_packet_transmit+0x18a1/0x46d0 net/sctp/output.c:621
 sctp_outq_flush_transports net/sctp/outqueue.c:1173 [inline]
 sctp_outq_flush+0x1c7d/0x67c0 net/sctp/outqueue.c:1221
 sctp_outq_uncork+0x9e/0xc0 net/sctp/outqueue.c:764
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:-1 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1204 [inline]
 sctp_do_sm+0x8c8e/0x9720 net/sctp/sm_sideeffect.c:1175
 sctp_assoc_bh_rcv+0x88b/0xbc0 net/sctp/associola.c:1034
 sctp_inq_push+0x2a6/0x350 net/sctp/inqueue.c:88
 sctp_backlog_rcv+0x3c7/0xda0 net/sctp/input.c:331
 sk_backlog_rcv+0x142/0x420 include/net/sock.h:1148
 __release_sock+0x1d3/0x330 net/core/sock.c:3194
 release_sock+0x6b/0x270 net/core/sock.c:3748
 sctp_wait_for_connect+0x458/0x820 net/sctp/socket.c:9367
 sctp_sendmsg_to_asoc+0x223a/0x2260 net/sctp/socket.c:1886
 sctp_sendmsg+0x3910/0x49f0 net/sctp/socket.c:2032
 inet_sendmsg+0x26c/0x2a0 net/ipv4/af_inet.c:851
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0x278/0x3d0 net/socket.c:729
 __sys_sendto+0x593/0x720 net/socket.c:2228
 __do_sys_sendto net/socket.c:2235 [inline]
 __se_sys_sendto net/socket.c:2231 [inline]
 __x64_sys_sendto+0x130/0x200 net/socket.c:2231
 x64_sys_call+0x3910/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 9930 Comm: syz.2.1417 Tainted: G        W           6.17.0-rc1-syzkaller #0 PREEMPT(none) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
=====================================================