Hello, syzbot found the following issue on: HEAD commit: 0468be89b3fa Merge tag 'iommu-updates-v6.6' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17e2d447a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=3544ee7492950dd3 dashboard link: https://syzkaller.appspot.com/bug?extid=b6678ec6b1772e54ee6e compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12a86513a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16a3f977a80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/961bf23596d0/disk-0468be89.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d9431ec0107c/vmlinux-0468be89.xz kernel image: https://storage.googleapis.com/syzbot-assets/fb5d1f6d7aad/bzImage-0468be89.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b6678ec6b1772e54ee6e@xxxxxxxxxxxxxxxxxxxxxxxxx executing program BUG: memory leak unreferenced object 0xffff88810dcfd000 (size 2048): comm "syz-executor249", pid 5023, jiffies 4294943992 (age 23.130s) hex dump (first 32 bytes): d8 4c ce 0d 81 88 ff ff 22 01 00 00 00 00 ad de .L......"....... 00 00 00 00 00 00 00 00 00 00 00 aa aa aa aa aa ................ backtrace: [<ffffffff81573855>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1114 [<ffffffff84519e7f>] kmalloc include/linux/slab.h:599 [inline] [<ffffffff84519e7f>] kzalloc include/linux/slab.h:720 [inline] [<ffffffff84519e7f>] hci_conn_add+0x4f/0x5e0 net/bluetooth/hci_conn.c:957 [<ffffffff8451a678>] hci_connect_acl+0x198/0x1b0 net/bluetooth/hci_conn.c:1632 [<ffffffff8451d4db>] hci_connect_sco+0x4b/0x520 net/bluetooth/hci_conn.c:1685 [<ffffffff8458f6b3>] sco_connect net/bluetooth/sco.c:266 [inline] [<ffffffff8458f6b3>] sco_sock_connect+0x1c3/0x520 net/bluetooth/sco.c:591 [<ffffffff83e89281>] __sys_connect_file+0x91/0xb0 net/socket.c:2032 [<ffffffff83e89386>] __sys_connect+0xe6/0x110 net/socket.c:2049 [<ffffffff83e893cc>] __do_sys_connect net/socket.c:2059 [inline] [<ffffffff83e893cc>] __se_sys_connect net/socket.c:2056 [inline] [<ffffffff83e893cc>] __x64_sys_connect+0x1c/0x20 net/socket.c:2056 [<ffffffff84b23fa8>] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [<ffffffff84b23fa8>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 [<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd BUG: memory leak unreferenced object 0xffff88810b503600 (size 512): comm "kworker/u5:1", pid 4429, jiffies 4294944492 (age 18.130s) hex dump (first 32 bytes): 00 d0 cf 0d 81 88 ff ff 80 7b 7f 0b 81 88 ff ff .........{...... fd 03 00 00 00 00 00 00 00 06 0c 00 00 00 00 00 ................ backtrace: [<ffffffff81573855>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1114 [<ffffffff845547dd>] kmalloc include/linux/slab.h:599 [inline] [<ffffffff845547dd>] kzalloc include/linux/slab.h:720 [inline] [<ffffffff845547dd>] l2cap_conn_add.part.0+0x3d/0x340 net/bluetooth/l2cap_core.c:7845 [<ffffffff845623b4>] l2cap_conn_add net/bluetooth/l2cap_core.c:71 [inline] [<ffffffff845623b4>] l2cap_connect_cfm+0x264/0x740 net/bluetooth/l2cap_core.c:8242 [<ffffffff8451da53>] hci_connect_cfm include/net/bluetooth/hci_core.h:1935 [inline] [<ffffffff8451da53>] hci_conn_failed+0xa3/0x120 net/bluetooth/hci_conn.c:1251 [<ffffffff84586cc6>] hci_abort_conn_sync+0x4d6/0x6d0 net/bluetooth/hci_sync.c:5435 [<ffffffff8451761d>] abort_conn_sync+0x7d/0xa0 net/bluetooth/hci_conn.c:2894 [<ffffffff8457d3ad>] hci_cmd_sync_work+0xcd/0x150 net/bluetooth/hci_sync.c:306 [<ffffffff812c8e0d>] process_one_work+0x23d/0x530 kernel/workqueue.c:2630 [<ffffffff812c99b7>] process_scheduled_works kernel/workqueue.c:2703 [inline] [<ffffffff812c99b7>] worker_thread+0x327/0x590 kernel/workqueue.c:2784 [<ffffffff812d6e8b>] kthread+0x12b/0x170 kernel/kthread.c:388 [<ffffffff81149875>] ret_from_fork+0x45/0x50 arch/x86/kernel/process.c:147 [<ffffffff81002be1>] ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, 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 bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
