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AKwUvBxsKYPC9z2gppPIhBJB//SH0uT8G9WNX6uWKnu+tkBtsXIZ/GfBrCOnls0eEwmtyZwZXIGGF/g58/Qg+o4=@vger.kernel.org X-Gm-Message-State: AFq9FYJVqyyCrr9GHGYYrS/w6lgN7fb3czyMwys4sANIo/2X/mHomSwB sSSUPY04wzyiFVJPNu1Z4Jg6Bv1V9qbmHvd8mGDjuSs1YRISth/aJbxgMPZtkyIL1lWvxZ/T4Q0 6jN/yN3CZH5P8OfKMjYBt5cuvTd7mgvtgBDePydZUZ1RKSr8hbcjzjkR87lE= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:2175:b0:533:be44:82e with SMTP id 5614622812f47-533be446562mr3401311b6e.40.1792162802722; Fri, 16 Oct 2026 08:00:02 -0700 (PDT) Date: Fri, 16 Oct 2026 08:00:02 -0700 In-Reply-To: <20261016144043.105294-1-deaner92@yahoo.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ad23bf2.7952420f.283480.0346.GAE@google.com> Subject: Re: [syzbot] [bluetooth?] WARNING in hci_connect_sco From: syzbot To: deaner92@yahoo.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in hci_connect_sco ------------[ cut here ]------------ workqueue: cannot queue hci_conn_timeout on wq hci4 WARNING: kernel/workqueue.c:2352 at __queue_work+0xdb7/0x1370 kernel/workqueue.c:2351, CPU#3: syz.3.10663/29395 Modules linked in: CPU: 3 UID: 0 PID: 29395 Comm: syz.3.10663 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__queue_work+0xdbb/0x1370 kernel/workqueue.c:2351 Code: 00 00 00 fc ff df 49 8d 94 24 70 01 00 00 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 92 05 00 00 48 8d 3d f9 73 31 0f 48 8b 75 18 <67> 48 0f b9 3a 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 RSP: 0018:ffffc9000fb5fad0 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff888024bc4b00 RCX: 1ffff110068ce94d RDX: ffff88802dd11170 RSI: ffffffff8aaa2470 RDI: ffffffff91015080 RBP: ffff888034674a50 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88802dd11000 R13: 1ffff92001f6bf64 R14: 0000000000000000 R15: ffff888034674a58 FS: 00007f7656c026c0(0000) GS:ffff8880d634f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7655c71fc0 CR3: 00000000333f3000 CR4: 0000000000352ef0 Call Trace: __queue_delayed_work+0x357/0x450 kernel/workqueue.c:2617 queue_delayed_work_on+0x180/0x1e0 kernel/workqueue.c:2669 queue_delayed_work include/linux/workqueue.h:715 [inline] hci_conn_drop include/net/bluetooth/hci_core.h:1729 [inline] hci_conn_drop include/net/bluetooth/hci_core.h:1703 [inline] hci_connect_sco+0x4d2/0xef0 net/bluetooth/hci_conn.c:1881 sco_connect net/bluetooth/sco.c:375 [inline] sco_sock_connect+0x631/0x1800 net/bluetooth/sco.c:764 connect_socket net/socket.c:2141 [inline] connect_socket net/socket.c:2131 [inline] __sys_connect_file+0x146/0x1a0 net/socket.c:2166 __sys_connect+0x141/0x170 net/socket.c:2183 __do_sys_connect net/socket.c:2189 [inline] __se_sys_connect net/socket.c:2186 [inline] __x64_sys_connect+0x72/0xb0 net/socket.c:2186 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x119/0x770 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7655d9c629 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7656c02028 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007f7656015fa0 RCX: 00007f7655d9c629 RDX: 0000000000000008 RSI: 0000200000000340 RDI: 0000000000000005 RBP: 00007f7655e32b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7656016038 R14: 00007f7656015fa0 R15: 00007fffaa2a52b8 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 fc add %bh,%ah 4: ff lcall (bad) 5: df 49 8d fisttps -0x73(%rcx) 8: 94 xchg %eax,%esp 9: 24 70 and $0x70,%al b: 01 00 add %eax,(%rax) d: 00 48 89 add %cl,-0x77(%rax) 10: f9 stc 11: 48 c1 e9 03 shr $0x3,%rcx 15: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) 19: 0f 85 92 05 00 00 jne 0x5b1 1f: 48 8d 3d f9 73 31 0f lea 0xf3173f9(%rip),%rdi # 0xf31741f 26: 48 8b 75 18 mov 0x18(%rbp),%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 36: fc ff df 39: 48 89 ea mov %rbp,%rdx 3c: 48 c1 ea 03 shr $0x3,%rdx Tested on: commit: 90201351 wifi: atk9k: Revert "wifi: ath9k: reject shor.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13940305580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1422747690f83bc1 dashboard link: https://syzkaller.appspot.com/bug?extid=5897b3c764f5989ea942 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 Note: no patches were applied.