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AJvYcCXYjok57HMDVO4N0oFT0pTl7BR8GPUzP/7+PfrvbsOLFNOgYoYEHG5VBHYxRoWqpAKtx2Mjg+M=@vger.kernel.org X-Gm-Message-State: AOJu0YwwJjWrtFupcHCW4Smh+MsAlFy7203hr8oC8IjHeB09r2xyyYKf rUqUaU8fTCXU6V1tVAhKqghGs/ENSCQs0A7eTLT/Jq5tmcQXlsLx4evdGV/YHFxrWB8Wy7SCZc5 XfxnroihOt7vOb7XWwjicuqpeekn1X2MA/6VMCiYELvV8soVUFX4EVrMi3KA= Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4b8f:b0:684:743e:86a6 with SMTP id 006d021491bc7-68a60facd1dmr43746eaf.20.1775663300991; Wed, 08 Apr 2026 08:48:20 -0700 (PDT) Date: Wed, 08 Apr 2026 08:48:20 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69d678c4.050a0220.3030df.000a.GAE@google.com> Subject: [syzbot] [net?] memory leak in xfrm_policy_construct From: syzbot To: davem@davemloft.net, edumazet@google.com, herbert@gondor.apana.org.au, horms@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, steffen.klassert@secunet.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: a0c83177734a Merge tag 'drm-fixes-2026-03-21' of https://g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=117d66da580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e2bba615ee79faa5 dashboard link: https://syzkaller.appspot.com/bug?extid=901d48e0b95aed4a2548 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12a481d6580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1669ccba580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/76025f732b88/disk-a0c83177.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/51c8f0f97de7/vmlinux-a0c83177.xz kernel image: https://storage.googleapis.com/syzbot-assets/46b7135c73d1/bzImage-a0c83177.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+901d48e0b95aed4a2548@syzkaller.appspotmail.com 2026/03/21 23:24:08 executed programs: 5 BUG: memory leak unreferenced object 0xffff888125a86c00 (size 1024): comm "syz.0.17", pid 6082, jiffies 4294946151 hex dump (first 32 bytes): 00 e5 5f 1c 81 88 ff ff 00 00 00 00 00 00 00 00 .._............. 22 01 00 00 00 00 ad de 00 01 00 00 00 00 ad de "............... backtrace (crc f62518df): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4543 [inline] slab_alloc_node mm/slub.c:4866 [inline] __kmalloc_cache_noprof+0x377/0x480 mm/slub.c:5375 kmalloc_noprof include/linux/slab.h:950 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] xfrm_policy_alloc+0x63/0x180 net/xfrm/xfrm_policy.c:432 xfrm_policy_construct+0x30/0x260 net/xfrm/xfrm_user.c:2187 xfrm_add_policy+0x12e/0x390 net/xfrm/xfrm_user.c:2246 xfrm_user_rcv_msg+0x248/0x570 net/xfrm/xfrm_user.c:3507 netlink_rcv_skb+0x89/0x1c0 net/netlink/af_netlink.c:2550 xfrm_netlink_rcv+0x34/0x40 net/xfrm/xfrm_user.c:3529 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x3a1/0x4f0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x335/0x690 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0x54a/0x580 net/socket.c:2592 ___sys_sendmsg+0x101/0x140 net/socket.c:2646 __sys_sendmsg+0xcd/0x140 net/socket.c:2678 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup