From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f205.google.com (mail-oi1-f205.google.com [209.85.167.205]) (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 6E595202F71 for ; Sat, 15 Aug 2026 08:41:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786783302; cv=none; b=GTeQBxfMnsH2/j4WSdlEZLTMTN+XyU9rkgrayosxtP/a0EFe3fVFQJDfjnxSsLjmGZ+XAmJN3gfCY9TDHsdldHl7usZ5Zl5oXjOvK+NR/V+KgdsPEKyJDwoyKOveXTKiSdj8ruphnIgj2NjoaVWf1D7Iy6gN8BWD8ZlSYGEF12o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786783302; c=relaxed/simple; bh=lYY0NXJw+cjG+Q2P5DXOzzhvYjtXTkNYZvhcPJwRMIk=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; 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2002:a05:6808:158f:b0:4af:aaca:7be3 with SMTP id 5614622812f47-4b228257383mr11735100b6e.12.1786783299395; Sat, 15 Aug 2026 01:41:39 -0700 (PDT) Date: Sat, 15 Aug 2026 01:41:39 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a802643.9ebadd4d.20b15e.000a.GAE@google.com> Subject: [syzbot] [input?] [usb?] WARNING: ODEBUG bug in corsair_remove From: syzbot To: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 2697ef8943c9 Add linux-next specific files for 20260813 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=14b5ac79580000 kernel config: https://syzkaller.appspot.com/x/.config?x=7b15c0e5cf4b66b8 dashboard link: https://syzkaller.appspot.com/bug?extid=0a031a76585d1c7e737d 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=1305d149580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/4cbe50aa5264/disk-2697ef89.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/fcf42545947a/vmlinux-2697ef89.xz kernel image: https://storage.googleapis.com/syzbot-assets/aef0f9050c29/bzImage-2697ef89.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+0a031a76585d1c7e737d@syzkaller.appspotmail.com corsair 0003:1B1C:1B02.0001: hidraw0: USB HID v0.00 Device [HID 1b1c:1b02] on usb-dummy_hcd.0-1/input0 corsair 0003:1B1C:1B02.0001: Failed to get K90 initial state (error -71). usb 1-1: USB disconnect, device number 2 ------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff88807780a2c8 object type: work_struct hint: k90_record_led_work+0x0/0x1e0 drivers/hid/hid-corsair.c:-1 WARNING: lib/debugobjects.c:632 at debug_print_object+0xec/0x230 lib/debugobjects.c:629, CPU#0: kworker/0:3/5733 Modules linked in: CPU: 0 UID: 0 PID: 5733 Comm: kworker/0:3 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:debug_print_object+0x18a/0x230 lib/debugobjects.c:629 Code: f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 dd 25 50 fd 4d 8b 0f 4c 89 ef 48 8b 74 24 08 48 89 ea 44 89 e1 4d 89 f0 ff 34 24 <67> 48 0f b9 3a 48 83 c4 08 ff 05 13 3b 93 0b 48 83 c4 10 5b 41 5c RSP: 0018:ffffc90002f7efd0 EFLAGS: 00010246 RAX: 1ffffffff1816f44 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffffffff8c6cbd40 RSI: ffffffff8c6cb7c0 RDI: ffffffff90843b50 RBP: ffffffff8c6cbd40 R08: ffff88807780a2c8 R09: ffffffff8c0b8c40 R10: dffffc0000000000 R11: ffffffff818f5880 R12: 0000000000000000 R13: ffffffff90843b50 R14: ffff88807780a2c8 R15: ffffffff8c0b7a20 FS: 0000000000000000(0000) GS:ffff888124d03000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562675362520 CR3: 000000007f9c2000 CR4: 00000000003526f0 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:1171 [inline] debug_check_no_obj_freed+0x2e3/0x450 lib/debugobjects.c:1201 slab_free_hook mm/slub.c:2679 [inline] slab_free mm/slub.c:6499 [inline] kfree+0x13e/0x650 mm/slub.c:6792 k90_cleanup_macro_functions drivers/hid/hid-corsair.c:547 [inline] corsair_remove+0xfd/0x260 drivers/hid/hid-corsair.c:602 hid_device_remove+0xc5/0x1c0 drivers/hid/hid-core.c:2901 device_remove drivers/base/dd.c:616 [inline] __device_release_driver drivers/base/dd.c:1349 [inline] device_release_driver_internal+0x48b/0x880 drivers/base/dd.c:1372 bus_remove_device+0x444/0x560 drivers/base/bus.c:664 device_del+0x524/0x8f0 drivers/base/core.c:3965 hid_remove_device drivers/hid/hid-core.c:3130 [inline] hid_destroy_device+0x6b/0x1b0 drivers/hid/hid-core.c:3152 usbhid_disconnect+0x9f/0xc0 drivers/hid/usbhid/hid-core.c:1479 usb_unbind_interface+0x295/0x9f0 drivers/usb/core/driver.c:461 device_remove drivers/base/dd.c:618 [inline] __device_release_driver drivers/base/dd.c:1349 [inline] device_release_driver_internal+0x4f5/0x880 drivers/base/dd.c:1372 bus_remove_device+0x444/0x560 drivers/base/bus.c:664 device_del+0x524/0x8f0 drivers/base/core.c:3965 usb_disable_device+0x3d4/0x8d0 drivers/usb/core/message.c:1478 usb_disconnect+0x346/0x9a0 drivers/usb/core/hub.c:2350 hub_port_connect drivers/usb/core/hub.c:5420 [inline] hub_port_connect_change drivers/usb/core/hub.c:5720 [inline] port_event drivers/usb/core/hub.c:5884 [inline] hub_event+0x1bbb/0x4d30 drivers/usb/core/hub.c:5966 process_one_work kernel/workqueue.c:3386 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3469 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3550 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- Code disassembly (best guess): 0: f8 clc 1: 48 c1 e8 03 shr $0x3,%rax 5: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) 9: 74 08 je 0x13 b: 4c 89 ff mov %r15,%rdi e: e8 dd 25 50 fd call 0xfd5025f0 13: 4d 8b 0f mov (%r15),%r9 16: 4c 89 ef mov %r13,%rdi 19: 48 8b 74 24 08 mov 0x8(%rsp),%rsi 1e: 48 89 ea mov %rbp,%rdx 21: 44 89 e1 mov %r12d,%ecx 24: 4d 89 f0 mov %r14,%r8 27: ff 34 24 push (%rsp) * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 48 83 c4 08 add $0x8,%rsp 33: ff 05 13 3b 93 0b incl 0xb933b13(%rip) # 0xb933b4c 39: 48 83 c4 10 add $0x10,%rsp 3d: 5b pop %rbx 3e: 41 5c pop %r12 --- 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