From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C4E18CA9ECF for ; Sun, 11 Oct 2026 17:32:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:To:From:Subject :Message-ID:Date:MIME-Version:Reply-To:Cc:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=u0o4MtJdz+i7038O/zO8/MdLCh4dr9Ow4hnPcKqRLHE=; b=a1Qh9KtnpGlCWlbxpihlnSieC1 STLV9RDt+Y+kpzhTjVpSahaveLTeOfEuw2zZQQsQvd8Yxr5iCrJ4Bf1l3NlfhfvqFG/EI5Ie6xtgQ wgpEKDN4mH734513uzSG47UaFuoCsBSjLd5eJuybiNMrjUKi3uE7KwkTMLhkdsnMbdRgoR8pI7gUP LICWZA70BrhaCR7UrKrjqj2ms+4cCZaoFnaEVfHyLp4nBkDjYDk3pbnZVQ2N6j8XMOF2QU86KNlhb aygKhSxSvgL6lJqQKxUIFhBkhq02bkFaoY+4rPb76k1Vdh3C+LiXvGz3LsU4nZj9JTl5gYNml1qKb kr0Ys6BQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xFxPj-00000009GB2-0AIR; Sun, 11 Oct 2026 17:32:47 +0000 Received: from mail-oi1-f197.google.com ([209.85.167.197]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xFxPb-00000009GAf-2wkt for linux-nvme@lists.infradead.org; Sun, 11 Oct 2026 17:32:41 +0000 Received: by mail-oi1-f197.google.com with SMTP id 5614622812f47-4cc89e86e4dso2404747b6e.2 for ; Sun, 11 Oct 2026 10:32:38 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791739958; x=1792344758; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=u0o4MtJdz+i7038O/zO8/MdLCh4dr9Ow4hnPcKqRLHE=; b=L2TwKbO1vocZCcLNDOLWfRxX8VFXXMkRMBBgsUVyS2PvkwXoTepqp4NiKDR4hqsWI4 zkn0kTti1MDu0eznwTDGjWGBlVd68/Q+F/RWJLBd6c4hmUd4lvn9Nzxceaev2Q70KRj0 rOeDtC6D98PFxUWiunDihc8tmo9/TIwMoE8XiafrFhVQEJWPjuOrU0Q/AK/JULBVlMvz fj+dk8mg74AvYtvqzULCQTeZBFksJggWHgawsp9iQ114GUCtds3XNqkB+So0ymkLykwn JO6n+BMDYzr1YnFYPM9Dy8BwIkb04W+218wnxkmUxZPma+CANaFLY+dZ+XnGprMt+EKW 3Pgw== X-Forwarded-Encrypted: i=1; AKwUvBzQDKS5WrzRIuC344OUdWMBBSYVu1aStX10WoGECcL5EpRFS+HKn+YuZYsZ0f95lb8GDMhiRFWn84Q1@lists.infradead.org X-Gm-Message-State: AFq9FYJc4qwt32xWsJoWAjO9L5BAQZvbHVtSs0Xh8IAppsWwFNdD7+EG 3K5SJ84cyc8Fj6FKh0ypLeqgfsU6omr0W50qlQvKqmpWNIWfgPeJDeUlkg6tcxMnlLV9R8ySWOu V8sBr2LbyX6McIXRkq8bIjtiy8O4Rvn2WT2LOBtnGM4GrLp2Z01qgnueMsHU= MIME-Version: 1.0 X-Received: by 2002:a05:6808:1b97:b0:4f3:e98f:fa0b with SMTP id 5614622812f47-50c556bc9d7mr7201373b6e.5.1791739957943; Sun, 11 Oct 2026 10:32:37 -0700 (PDT) Date: Sun, 11 Oct 2026 10:32:37 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6acbc835.a150a118.27e199.003c.GAE@google.com> Subject: [syzbot] [nvme?] BUG: corrupted list in nvmet_fc_remove_port From: syzbot To: hch@lst.de, justin.tee@broadcom.com, kch@nvidia.com, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, nareshgottumukkala83@gmail.com, paul.ely@broadcom.com, sagi@grimberg.me, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261011_103239_748680_AE27F761 X-CRM114-Status: UNSURE ( 9.03 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Hello, syzbot found the following issue on: HEAD commit: a5ebb76233b7 Merge tag 'edac_urgent_for_v7.3_rc7' of git:/.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=1494923e580000 kernel config: https://syzkaller.appspot.com/x/.config?x=df4bbab1c2172b9f dashboard link: https://syzkaller.appspot.com/bug?extid=c98b21427617af7f547a compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=126a0f15580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=166a0f15580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/d24cfbd75fba/disk-a5ebb762.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d0874c703893/vmlinux-a5ebb762.xz kernel image: https://storage.googleapis.com/syzbot-assets/2a424fa32a7b/bzImage-a5ebb762.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c98b21427617af7f547a@syzkaller.appspotmail.com nvmet_tcp: enabling port 1 (127.0.0.1:4420) non-slab/vmalloc memory list_del corruption. prev->next should be ffff88802af3b020, but was 0000000000000000. (prev=ffffffff9aecd340) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:64! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 5680 Comm: syz-executor403 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62 Code: e8 ab ea 37 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 6c b1 58 fd 49 8b 17 48 c7 c7 40 71 cc 8b 48 89 de 4c 89 f9 e8 a7 7a 4c fc 90 <0f> 0b 4c 89 f7 e8 7c ea 37 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 3d RSP: 0018:ffffc90004cdfc30 EFLAGS: 00010246 RAX: 000000000000006d RBX: ffff88802af3b020 RCX: 7d3c36a647dfae00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000201 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed101708490b R12: 1ffffffff35d9a68 R13: dffffc0000000000 R14: ffffffff85f7f740 R15: ffffffff9aecd340 FS: 0000555594721400(0000) GS:ffff8881249bb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555594721340 CR3: 0000000038dd8000 CR4: 00000000003526f0 Call Trace: __list_del_entry_valid include/linux/list.h:140 [inline] __list_del_entry include/linux/list.h:261 [inline] list_del include/linux/list.h:275 [inline] nvmet_fc_portentry_unbind drivers/nvme/target/fc.c:1281 [inline] nvmet_fc_remove_port+0x16b/0x320 drivers/nvme/target/fc.c:2927 nvmet_disable_port+0x13e/0x1f0 drivers/nvme/target/core.c:400 nvmet_port_subsys_drop_link+0x1e8/0x210 drivers/nvme/target/configfs.c:1123 configfs_unlink+0x44f/0x6b0 fs/configfs/symlink.c:258 vfs_unlink+0x27b/0x6e0 fs/namei.c:5678 filename_unlinkat+0x3d3/0x610 fs/namei.c:5748 __do_sys_unlinkat fs/namei.c:5777 [inline] __se_sys_unlinkat+0x83/0x1a0 fs/namei.c:5769 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0ad400d8b9 Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 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 d8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe650d4178 EFLAGS: 00000246 ORIG_RAX: 0000000000000107 RAX: ffffffffffffffda RBX: 0000200000000780 RCX: 00007f0ad400d8b9 RDX: 0000000000000000 RSI: 0000200000000780 RDI: 00000000ffffff9c RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 R10: 0000000000000009 R11: 0000000000000246 R12: 0000000000014e22 R13: 00007ffe650d418c R14: 00007ffe650d41a0 R15: 00007ffe650d4190 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62 Code: e8 ab ea 37 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 6c b1 58 fd 49 8b 17 48 c7 c7 40 71 cc 8b 48 89 de 4c 89 f9 e8 a7 7a 4c fc 90 <0f> 0b 4c 89 f7 e8 7c ea 37 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 3d RSP: 0018:ffffc90004cdfc30 EFLAGS: 00010246 RAX: 000000000000006d RBX: ffff88802af3b020 RCX: 7d3c36a647dfae00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000201 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed101708490b R12: 1ffffffff35d9a68 R13: dffffc0000000000 R14: ffffffff85f7f740 R15: ffffffff9aecd340 FS: 0000555594721400(0000) GS:ffff8881249bb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555594721340 CR3: 0000000038dd8000 CR4: 00000000003526f0 --- 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