From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f199.google.com (mail-oi1-f199.google.com [209.85.167.199]) (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 508463A9616 for ; Fri, 16 Oct 2026 19:32:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792179152; cv=none; b=Hczx4sZHpAVAVBv739S4cLnkpJ9f3vWKA/VZVgw2N+9YjFluzC6sEpi/FrMrAq24/IQrIoMMQpDsGEPCjvng8YPD23h8pvGLrmBzAeDAUX5HDV0KJG3wzv/KBgolXd6gFzcojVyyuoAYE2UfFcCtGHDLFIudBxorEEkI6SvOKgY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792179152; c=relaxed/simple; bh=nema57VpknUEVjHK/6OaGO6/Ax8j31pmoGa6E/DIQpM=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=rWPlz/xuBbE93DNGUuqEMqh/UglGwUAG6TsZkBoAz6fpmDf4BmOuofejYe7NxktjhON6tf6SssNlfp4OjfOjFcNakLR59fLlD+vZxJ/16mhR7Yf1KLD7kvLDJh0rORAviFY5AJ7j197faN2QbH4bOm58ryP7WYXc83fjX3f62QU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.167.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oi1-f199.google.com with SMTP id 5614622812f47-4e778acdbc6so489796b6e.3 for ; Fri, 16 Oct 2026 12:32:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1792179148; x=1792783948; 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=eqhbNevn+egUUM8xu0N1mDNSKYZORquqfhQb7/sTToI=; b=daAf0vgxd+cWZf2cwdHw7UsaCBtzqY43D3psH/HrR+cNRm+vOEPDOHkbDxChjSNnti A442RogJL4O96WxZxQofvzcQM2MsyuyQYHbWrYhl9ppjFcrX1QkdyKXQ2lZAX62Z1kj6 RUmf6IqH0j9JzuBi+Vo8NUQScxZU7YZWOTTH2T98DjfTAd3cUPduxDT7Ten7nzHDucHc GVIYcM1hG53Opo+e4WvbIGFdJ7YOuiUxa1rxlClxYL6SwDbutY9SvsTxhy1SDotTkRuc TWDuzmstKdE5oVbp/qLCTozjW8NJPvP7RRowZd54GXEm2LlaZTttO5GXUpkOacurPAUQ ECqg== X-Forwarded-Encrypted: i=1; AKwUvBwTW2oEGGO+Fm+roSyIfREtUFU5z4Ijbp1zHBErlL8q/c252OTiZ1M6y6EY05v5CgzQ913LIs8WkgGIvFyk@lists.linux.dev X-Gm-Message-State: AFq9FYICyMcLKJgAdVh3TWT4Qcv0WWkNEfhGSztsRjJ+vgLYhbaiJ+iw DdVDz7j9qzCzSNuiwS16CnNGWsQuzhcNtzjAnCUBRPlSJ/MajoQUWb2YMfl91o5FOxCwpa5AHuN tTL4l029P3kpa0NKc2UX3gKSVzdHIIgJIALskTNuIMqyR9k29qqM1vwVgc3Q= Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:3a1a:b0:4cb:f21c:a795 with SMTP id 5614622812f47-53cd056572amr606742b6e.29.1792179147921; Fri, 16 Oct 2026 12:32:27 -0700 (PDT) Date: Fri, 16 Oct 2026 12:32:27 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ad27bcb.6814cce4.34c49f.000b.GAE@google.com> Subject: [syzbot] [greybus?] WARNING: ODEBUG bug in gb_operation_sync_timeout From: syzbot To: elder@kernel.org, gregkh@linuxfoundation.org, greybus-dev@lists.linaro.org, johan@kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-staging@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 2f2f7eeef8b0 Merge tag 'soc-fixes-7.3-3' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=157b1bd1580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c4b098695335c89f dashboard link: https://syzkaller.appspot.com/bug?extid=a2e50fb40695811c2dab compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/e46a243fa39c/disk-2f2f7eee.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/04a37a0099c0/vmlinux-2f2f7eee.xz kernel image: https://storage.googleapis.com/syzbot-assets/c2964fdca34d/bzImage-2f2f7eee.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a2e50fb40695811c2dab@syzkaller.appspotmail.com greybus greybus1: 0/0:0: synchronous operation id 0x0002 of type 0x10 failed: -71 ------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff888087f2c878 object type: timer_list hint: gb_operation_timeout+0x0/0x110 drivers/greybus/operation.c:1265 WARNING: lib/debugobjects.c:632 at debug_print_object+0xec/0x230 lib/debugobjects.c:629, CPU#1: kworker/u8:19/14610 Modules linked in: CPU: 1 UID: 0 PID: 14610 Comm: kworker/u8:19 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 Workqueue: greybus1:svc gb_svc_process_deferred_request 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 4d 99 4c 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 f3 4c 8e 0c 48 83 c4 10 5b 41 5c RSP: 0018:ffffc9000767f7e0 EFLAGS: 00010246 RAX: 1ffffffff181f08c RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffffffff8c6de740 RSI: ffffffff8c6de1c0 RDI: ffffffff91859a20 RBP: ffffffff8c6de740 R08: ffff888087f2c878 R09: ffffffff8c0f97c0 R10: dffffc0000000000 R11: ffffffff81b3f760 R12: 0000000000000000 R13: ffffffff91859a20 R14: ffff888087f2c878 R15: ffffffff8c0f8460 FS: 0000000000000000(0000) GS:ffff888123bbf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c25d909 CR3: 0000000071620000 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:6509 [inline] kmem_cache_free+0xfd/0x650 mm/slub.c:6636 gb_operation_sync_timeout+0x1c7/0x270 drivers/greybus/operation.c:1172 gb_operation_sync include/linux/greybus/operation.h:203 [inline] gb_svc_intf_set_power_mode drivers/greybus/svc.c:584 [inline] gb_svc_process_hello_deferred drivers/greybus/svc.c:936 [inline] gb_svc_process_deferred_request+0x5f3/0x1150 drivers/greybus/svc.c:1102 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560 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 4d 99 4c fd call 0xfd4c9960 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 f3 4c 8e 0c incl 0xc8e4cf3(%rip) # 0xc8e4d2c 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 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