From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f79.google.com (mail-oa1-f79.google.com [209.85.160.79]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8BFDD14AD20 for ; Fri, 24 Apr 2026 02:02:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776996156; cv=none; b=sgZYRAFts3SmwkXX+iy3ZEMGNrLVtKqSMONR6cYq0vjK7IHbq+Fr30ZEXBdS3JZQIlg12EjziLRa+CW3Lu9/oQNyuVSpBxCaEgS0ykoGllHsbNu/M9yPFifvwFPzAAaGyMS74uj6xmSKp23C0rkYUbNvrntH4wfJgKOQypPkUe4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776996156; c=relaxed/simple; bh=Ix1ii9fXrEzTcqkCz+c0607KCuN/OSfpHXVOLLAAlk8=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; 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006d021491bc7-6946381984emr10914198eaf.28.1776996153506; Thu, 23 Apr 2026 19:02:33 -0700 (PDT) Date: Thu, 23 Apr 2026 19:02:33 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69eacf39.a00a0220.17a17.004d.GAE@google.com> Subject: [syzbot] [virt?] [net?] memory leak in __vsock_create (2) From: syzbot To: davem@davemloft.net, edumazet@google.com, horms@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, sgarzare@redhat.com, syzkaller-bugs@googlegroups.com, virtualization@lists.linux.dev Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 1f318b96cc84 Linux 7.0-rc3 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14db28ba580000 kernel config: https://syzkaller.appspot.com/x/.config?x=2c6ad6fefffa76b1 dashboard link: https://syzkaller.appspot.com/bug?extid=1b2c9c4a0f8708082678 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=12db28ba580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1215175a580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/d4ebd240d832/disk-1f318b96.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/9548f49a7dec/vmlinux-1f318b96.xz kernel image: https://storage.googleapis.com/syzbot-assets/4e16f2bcfc7d/bzImage-1f318b96.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1b2c9c4a0f8708082678@syzkaller.appspotmail.com 2026/03/09 23:37:29 executed programs: 5 BUG: memory leak unreferenced object 0xffff888128bb6d00 (size 1272): comm "kworker/0:1", pid 10, jiffies 4294944453 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 28 00 0b 40 00 00 00 00 00 00 00 00 00 00 00 00 (..@............ backtrace (crc 31367ed9): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4547 [inline] slab_alloc_node mm/slub.c:4869 [inline] kmem_cache_alloc_noprof+0x372/0x480 mm/slub.c:4876 sk_prot_alloc+0x3e/0x1b0 net/core/sock.c:2239 sk_alloc+0x36/0x460 net/core/sock.c:2301 __vsock_create.constprop.0+0x38/0x2f0 net/vmw_vsock/af_vsock.c:893 virtio_transport_recv_listen net/vmw_vsock/virtio_transport_common.c:1557 [inline] virtio_transport_recv_pkt+0x855/0xfc0 net/vmw_vsock/virtio_transport_common.c:1685 vsock_loopback_work+0x104/0x140 net/vmw_vsock/vsock_loopback.c:142 process_one_work+0x26c/0x5d0 kernel/workqueue.c:3275 process_scheduled_works kernel/workqueue.c:3358 [inline] worker_thread+0x243/0x490 kernel/workqueue.c:3439 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x23c/0x4b0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: memory leak unreferenced object 0xffff8881141e93a0 (size 32): comm "kworker/0:1", pid 10, jiffies 4294944453 hex dump (first 32 bytes): f8 6e 0a 00 81 88 ff ff 00 00 00 00 00 00 00 00 .n.............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc e7f5c8b3): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4547 [inline] slab_alloc_node mm/slub.c:4869 [inline] __do_kmalloc_node mm/slub.c:5262 [inline] __kmalloc_noprof+0x3bd/0x560 mm/slub.c:5275 kmalloc_noprof include/linux/slab.h:954 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] lsm_blob_alloc+0x4d/0x80 security/security.c:192 lsm_sock_alloc security/security.c:4375 [inline] security_sk_alloc+0x2d/0x290 security/security.c:4391 sk_prot_alloc+0x8f/0x1b0 net/core/sock.c:2248 sk_alloc+0x36/0x460 net/core/sock.c:2301 __vsock_create.constprop.0+0x38/0x2f0 net/vmw_vsock/af_vsock.c:893 virtio_transport_recv_listen net/vmw_vsock/virtio_transport_common.c:1557 [inline] virtio_transport_recv_pkt+0x855/0xfc0 net/vmw_vsock/virtio_transport_common.c:1685 vsock_loopback_work+0x104/0x140 net/vmw_vsock/vsock_loopback.c:142 process_one_work+0x26c/0x5d0 kernel/workqueue.c:3275 process_scheduled_works kernel/workqueue.c:3358 [inline] worker_thread+0x243/0x490 kernel/workqueue.c:3439 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x23c/0x4b0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: memory leak unreferenced object 0xffff888128bfa8a0 (size 96): comm "kworker/0:1", pid 10, jiffies 4294944453 hex dump (first 32 bytes): 00 6d bb 28 81 88 ff ff 00 00 00 00 00 00 00 00 .m.(............ 00 00 00 00 00 00 00 00 00 00 04 00 00 00 00 00 ................ backtrace (crc 1fd60988): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4547 [inline] slab_alloc_node mm/slub.c:4869 [inline] __kmalloc_cache_noprof+0x377/0x480 mm/slub.c:5378 kmalloc_noprof include/linux/slab.h:950 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] virtio_transport_do_socket_init+0x2b/0xf0 net/vmw_vsock/virtio_transport_common.c:923 vsock_assign_transport+0x309/0x3a0 net/vmw_vsock/af_vsock.c:642 virtio_transport_recv_listen net/vmw_vsock/virtio_transport_common.c:1575 [inline] virtio_transport_recv_pkt+0x8bc/0xfc0 net/vmw_vsock/virtio_transport_common.c:1685 vsock_loopback_work+0x104/0x140 net/vmw_vsock/vsock_loopback.c:142 process_one_work+0x26c/0x5d0 kernel/workqueue.c:3275 process_scheduled_works kernel/workqueue.c:3358 [inline] worker_thread+0x243/0x490 kernel/workqueue.c:3439 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x23c/0x4b0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: memory leak unreferenced object 0xffff888129e1e800 (size 1272): comm "kworker/1:3", pid 5832, jiffies 4294944454 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 28 00 0b 40 00 00 00 00 00 00 00 00 00 00 00 00 (..@............ backtrace (crc 4bfb7c57): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4547 [inline] slab_alloc_node mm/slub.c:4869 [inline] kmem_cache_alloc_noprof+0x372/0x480 mm/slub.c:4876 sk_prot_alloc+0x3e/0x1b0 net/core/sock.c:2239 sk_alloc+0x36/0x460 net/core/sock.c:2301 __vsock_create.constprop.0+0x38/0x2f0 net/vmw_vsock/af_vsock.c:893 virtio_transport_recv_listen net/vmw_vsock/virtio_transport_common.c:1557 [inline] virtio_transport_recv_pkt+0x855/0xfc0 net/vmw_vsock/virtio_transport_common.c:1685 vsock_loopback_work+0x104/0x140 net/vmw_vsock/vsock_loopback.c:142 process_one_work+0x26c/0x5d0 kernel/workqueue.c:3275 process_scheduled_works kernel/workqueue.c:3358 [inline] worker_thread+0x243/0x490 kernel/workqueue.c:3439 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x23c/0x4b0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: memory leak unreferenced object 0xffff888114372e80 (size 32): comm "kworker/1:3", pid 5832, jiffies 4294944454 hex dump (first 32 bytes): f8 6e 0a 00 81 88 ff ff 00 00 00 00 00 00 00 00 .n.............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc e7f5c8b3): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4547 [inline] slab_alloc_node mm/slub.c:4869 [inline] __do_kmalloc_node mm/slub.c:5262 [inline] __kmalloc_noprof+0x3bd/0x560 mm/slub.c:5275 kmalloc_noprof include/linux/slab.h:954 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] lsm_blob_alloc+0x4d/0x80 security/security.c:192 lsm_sock_alloc security/security.c:4375 [inline] security_sk_alloc+0x2d/0x290 security/security.c:4391 sk_prot_alloc+0x8f/0x1b0 net/core/sock.c:2248 sk_alloc+0x36/0x460 net/core/sock.c:2301 __vsock_create.constprop.0+0x38/0x2f0 net/vmw_vsock/af_vsock.c:893 virtio_transport_recv_listen net/vmw_vsock/virtio_transport_common.c:1557 [inline] virtio_transport_recv_pkt+0x855/0xfc0 net/vmw_vsock/virtio_transport_common.c:1685 vsock_loopback_work+0x104/0x140 net/vmw_vsock/vsock_loopback.c:142 process_one_work+0x26c/0x5d0 kernel/workqueue.c:3275 process_scheduled_works kernel/workqueue.c:3358 [inline] worker_thread+0x243/0x490 kernel/workqueue.c:3439 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x23c/0x4b0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: memory leak unreferenced object 0xffff8881054d0ea0 (size 96): comm "kworker/1:3", pid 5832, jiffies 4294944454 hex dump (first 32 bytes): 00 e8 e1 29 81 88 ff ff 00 00 00 00 00 00 00 00 ...)............ 00 00 00 00 00 00 00 00 00 00 04 00 00 00 00 00 ................ backtrace (crc 72501265): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4547 [inline] slab_alloc_node mm/slub.c:4869 [inline] __kmalloc_cache_noprof+0x377/0x480 mm/slub.c:5378 kmalloc_noprof include/linux/slab.h:950 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] virtio_transport_do_socket_init+0x2b/0xf0 net/vmw_vsock/virtio_transport_common.c:923 vsock_assign_transport+0x309/0x3a0 net/vmw_vsock/af_vsock.c:642 virtio_transport_recv_listen net/vmw_vsock/virtio_transport_common.c:1575 [inline] virtio_transport_recv_pkt+0x8bc/0xfc0 net/vmw_vsock/virtio_transport_common.c:1685 vsock_loopback_work+0x104/0x140 net/vmw_vsock/vsock_loopback.c:142 process_one_work+0x26c/0x5d0 kernel/workqueue.c:3275 process_scheduled_works kernel/workqueue.c:3358 [inline] worker_thread+0x243/0x490 kernel/workqueue.c:3439 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x23c/0x4b0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF --- This report is generated by a bot. 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