From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 040E0606A31B for ; Fri, 23 Oct 2026 13:42:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=bPEK4XK+ 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-Unsubscribe-Post:List-Owner; bh=ljm8bNNap3tvF9+jeCrN03t35kRNZ/yBqVC9j5iU6CA=; b=bPEK4XK+sNSCY6frTZpZxcs8Hv 7L14Q9FepWpuV4bsrab2CqJg59IGxw2M6+J+ubB8qpUvQ86gAOKwAIEFhUBVL209b45p5kwzOuBgg 5qcbD1CWGMpxiC11N7K4eKwBTM2gnQa1Q0FC7AcfcuaICx0dCsCVXx44fZQ33oTUr3+3KVGAbjp/l ze8EMBLeSLrD4oN4CH7AHQLKkA3OXboG43yASYUkBS7z+TwA0H4UETqKeylCC6WgTEyivEqaYEwWP wKwrS3y+BBFH2MaWoqhFrnOyG28tG2Fe2VHdRCcO2ghIoV30ZOxBlDeHVyx5RMj8c01ag1tPxy/C6 Oy1iid/Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xKFXl-0000000GQLl-2LMr; Fri, 23 Oct 2026 13:42:49 +0000 Received: from mail-oi1-f198.google.com ([209.85.167.198]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xKFXg-0000000GQHd-1Oxt for linux-nvme@lists.infradead.org; Fri, 23 Oct 2026 13:42:47 +0000 Received: by mail-oi1-f198.google.com with SMTP id 5614622812f47-4ab260600easo2579836b6e.1 for ; Fri, 23 Oct 2026 06:42:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1792762953; x=1793367753; 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=ljm8bNNap3tvF9+jeCrN03t35kRNZ/yBqVC9j5iU6CA=; b=MZm/V+KKWPjOe8fV00jBmYHjUZ2i/xPKRwN9BxfMktCFnJ7+YwGEQahahXwZzGNdFb ZpKz3Egde59SK8Z6YTeUDblG/eTOWldauL8MAIrNOqk7B0qVxKKmWSpZTW1NnOGwqHJ5 WJ13znB2vLMonDiYj7asFobaVODzFwqua7erXi0SPfISbYposdS/NaNH/fRKtj437BC/ rZ5IGy3bQwtAs71ysDcMURXw7YC65TV6tfXWQi0xWqAGthqLV1MIGEsThcSENieESUoB T4AYNXUFqSQnkq9l1W9u47eDJ9XNFtbLF4D1aH7/1mRuR+UaeYqQJICjr7Z3/384pqPK jE7A== X-Forwarded-Encrypted: i=1; AKwUvByhZZEdioY2fMh4+1jO0Z3RIM2zACN507LghOdd2HOHip0c/FnrgqPWKZydonp7Ry/52BA5IpRAv2nM@lists.infradead.org X-Gm-Message-State: AFq9FYJfG/m9Qmo9cr02fwyYxw91sjWUOXeRanMSmOX8U6sNENraGY5V GPBTwbGR2SrKUavJ0NYpHJ5KOKfyqnstQSjN05U5FphiurTqP6ZF2e3zZB26/G7xTByzno/FmxH GH3dF5uatHweWr5eq1SS8Pwt0BGyrBF1xdjP19ATpoh8cL+WQpcGQW8ciPlM= X-Archived-By: MIME-Version: 1.0 X-Received: by 2002:a05:6808:c224:b0:53a:1c29:cb37 with SMTP id 5614622812f47-557ee87e5edmr3000376b6e.38.1792762953518; Fri, 23 Oct 2026 06:42:33 -0700 (PDT) Date: Fri, 23 Oct 2026 06:42:33 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6adb6449.5589765f.2780bb.0034.GAE@google.com> Subject: [syzbot] [nvme?] WARNING in nvme_tcp_init_request From: syzbot To: axboe@kernel.dk, hch@lst.de, kbusch@kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, 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-20261023_064244_490388_73757CCF X-CRM114-Status: UNSURE ( 8.29 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 1.8 (+) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" X-Spam-Status: No, score=-9.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Hello, syzbot found the following issue on: HEAD commit: 2efb7a11f1aa Add linux-next specific files for 20261016 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=1419283c580000 kernel config: https://syzkaller.appspot.com/x/.config?x=129fca4e65ab9877 dashboard link: https://syzkaller.appspot.com/bug?extid=bdd7605037d64d5ccc10 compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1219283c580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1718d93e580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/cd996cff1b76/disk-2efb7a11.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/59577d58bd5a/vmlinux-2efb7a11.xz kernel image: https://storage.googleapis.com/syzbot-assets/a3dfa3b04143/bzImage-2efb7a11.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+bdd7605037d64d5ccc10@syzkaller.appspotmail.com nvme nvme0: creating 2 I/O queues. nvme nvme0: mapped 2/0/0 default/read/poll queues. ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: kernel/locking/mutex.c:625 at __mutex_lock_common kernel/locking/mutex.c:625 [inline], CPU#1: syz-executor121/5622 WARNING: kernel/locking/mutex.c:625 at __mutex_lock+0x132a/0x15a0 kernel/locking/mutex.c:821, CPU#1: syz-executor121/5622 Modules linked in: CPU: 1 UID: 0 PID: 5622 Comm: syz-executor121 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline] RIP: 0010:__mutex_lock+0x1331/0x15a0 kernel/locking/mutex.c:821 Code: b9 7a 91 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 46 02 00 00 83 3d 93 fc 83 05 00 75 13 48 8d 3d c6 fa 86 05 48 c7 c6 c0 27 0d 8c <67> 48 0f b9 3a 90 e9 1d ee ff ff 90 0f 0b 90 e9 f0 f1 ff ff 90 0f RSP: 0018:ffffc90003bdf1e0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff88807e8a9f40 RDX: 0000000000000000 RSI: ffffffff8c0d27c0 RDI: ffffffff917db820 RBP: ffffc90003bdf378 R08: ffffffff917ab9e3 R09: 1ffffffff22f573c R10: dffffc0000000000 R11: fffffbfff22f573d R12: ffff88807ed84460 R13: 0000000000000000 R14: 1ffff9200077be50 R15: 0000000000000000 FS: 000055557669a400(0000) GS:ffff888123b8b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcefd60ee9c CR3: 000000007ed68000 CR4: 00000000003526f0 Call Trace: nvme_tcp_init_request+0xbd/0x260 drivers/nvme/host/tcp.c:571 blk_mq_init_request block/blk-mq.c:3596 [inline] blk_mq_alloc_rqs block/blk-mq.c:3664 [inline] blk_mq_alloc_map_and_rqs+0x66d/0x980 block/blk-mq.c:4137 __blk_mq_alloc_map_and_rqs block/blk-mq.c:4155 [inline] __blk_mq_alloc_rq_maps block/blk-mq.c:4714 [inline] blk_mq_alloc_set_map_and_rqs+0x1a0/0x810 block/blk-mq.c:4745 blk_mq_alloc_tag_set+0x8e5/0x1000 block/blk-mq.c:4929 nvme_alloc_io_tag_set+0x36a/0x6f0 drivers/nvme/host/core.c:5103 nvme_tcp_configure_io_queues drivers/nvme/host/tcp.c:2297 [inline] nvme_tcp_setup_ctrl+0xc6f/0x1670 drivers/nvme/host/tcp.c:2530 nvme_tcp_create_ctrl+0xa59/0xf00 drivers/nvme/host/tcp.c:3123 nvmf_create_ctrl drivers/nvme/host/fabrics.c:1361 [inline] nvmf_dev_write+0x24ca/0x2d90 drivers/nvme/host/fabrics.c:1408 vfs_write+0x296/0xba0 fs/read_write.c:685 ksys_write+0x150/0x270 fs/read_write.c:1036 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: 0033:0x7f86ccedd849 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:00007fffd35af4a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 6769666e6f632f2e RCX: 00007f86ccedd849 RDX: 000000000000003a RSI: 00002000000007c0 RDI: 0000000000000008 RBP: 0000000000000001 R08: 0000000000000006 R09: 0000000000000006 R10: 0000000000000006 R11: 0000000000000246 R12: 00007fffd35af618 R13: 431bde82d7b634db R14: 00007f86ccf70c40 R15: 0000000000000002 ---------------- Code disassembly (best guess): 0: b9 7a 91 48 c1 mov $0xc148917a,%ecx 5: e8 03 0f b6 04 call 0x4b60f0d a: 18 84 c0 0f 85 46 02 sbb %al,0x246850f(%rax,%rax,8) 11: 00 00 add %al,(%rax) 13: 83 3d 93 fc 83 05 00 cmpl $0x0,0x583fc93(%rip) # 0x583fcad 1a: 75 13 jne 0x2f 1c: 48 8d 3d c6 fa 86 05 lea 0x586fac6(%rip),%rdi # 0x586fae9 23: 48 c7 c6 c0 27 0d 8c mov $0xffffffff8c0d27c0,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 90 nop 30: e9 1d ee ff ff jmp 0xffffee52 35: 90 nop 36: 0f 0b ud2 38: 90 nop 39: e9 f0 f1 ff ff jmp 0xfffff22e 3e: 90 nop 3f: 0f .byte 0xf --- 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