From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f71.google.com (mail-oo1-f71.google.com [209.85.161.71]) (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 E73173E277D for ; Wed, 18 Mar 2026 14:48:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773845288; cv=none; b=pqULZze9mSEb72npsaW004CXbewEkwTqXnaJYkyyST5mwEwd/d7BotsSt271VMSgrwOGbNJM5IGJBQ7dRMWPTEVpxMzofqNYzXVpfZELAX5XFrogz9Ww/2/2hiRq7dpBdaRS6YfLChW2uMLn6oimnKYTMAgW36nhQsu0+ITCuPc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773845288; c=relaxed/simple; bh=3VRzoMnIYJBTyc1SAzIgHjgBfwY2eBL+++J4AHvKTuk=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=eWn4xRlwE92uLcGazUk0qmnDmlHCUb98BVs9Bbhqj6yPYqQiLAyc5ysKE2oT3lhwc34pq1hOCwWP70QwM2NQsdJhDgMbLWW/gzKYaGITexqsa8Wjii2/kGcYaXfLZblMGxtZkSWkb5mMCGOCmCrUNfnJVkjWBEg6kBSTG2FrJ5k= 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=209.85.161.71 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-oo1-f71.google.com with SMTP id 006d021491bc7-67c1228b2a1so8636462eaf.0 for ; Wed, 18 Mar 2026 07:48:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1773845282; x=1774450082; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=i0EyPrB08NGgL+ACEs8iobDXIezs7fKlcY964tcQEaI=; b=LQZd083JAoEyQAPbRS1EIeKBeyjOwF/8iUg1J7XcALreB2FOnkFwhuduSJT/WjMbtU RHcwuZPiKtq76GJ+V16I9veIWSK2NFv6OrHe9IffCefbILapxnj2Ne2md4fMViTIhLfp hNcUJZfdgq1IM1oWjcTCv+j5yaB5kMR/EKx+61yoKFPprHy6Zy6hRrBQVSGfp6bAqtSE TV0Wap7/SRl8YsVtW1PUg99p2oTiVUs1XC80bYHk5wkxr6SyYEibe0wfSk0aGkvMulgR uW5/GYw7xqN5n7RCwA9UkWjTh/dP4t+wIs2Xlmy8RxcvrXHwvQYAI+NYSwH4rXIvupbt Xfug== X-Forwarded-Encrypted: i=1; AJvYcCVyuy3k6zKoboPXMEYZIyj2bXtk/Pbsu6KM+sm8d0T3GLF70F1SEBaqtnM7p4197AYJOk+dBMK915aWkoo=@vger.kernel.org X-Gm-Message-State: AOJu0YwKm4SIBpoSQmMql9/WpEGP8B/iqGJDqzmNcqIdmOxpJBoUwIhR juotd6wj/RSm4XCF0mh5VRJz43Qd17ZL1fMLy/kFMZdPoNAlQeZLIU2YOsvxNgBP4w9jYL3/1LP 22miS0aJamlk7BdVhZPaCSC+TgEXgJLlIIlF3uLAiuWijXl8+uS5qJfYeNWc= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1790:b0:67b:b4f4:2744 with SMTP id 006d021491bc7-67c0da724b7mr2394416eaf.17.1773845282631; Wed, 18 Mar 2026 07:48:02 -0700 (PDT) Date: Wed, 18 Mar 2026 07:48:02 -0700 In-Reply-To: <20260318120448.892484-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69babb22.050a0220.3a088d.0004.GAE@google.com> Subject: Re: [syzbot] [kernel?] INFO: task hung in ret_from_fork (4) From: syzbot To: kartikey406@gmail.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 nsim_fib_destroy ------------[ cut here ]------------ !list_empty(&data->fib_event_queue) WARNING: drivers/net/netdevsim/fib.c:1664 at nsim_fib_destroy+0x16f/0x180 drivers/net/netdevsim/fib.c:1664, CPU#0: syz-executor/6953 Modules linked in: CPU: 0 UID: 0 PID: 6953 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:nsim_fib_destroy+0x16f/0x180 drivers/net/netdevsim/fib.c:1664 Code: 80 3c 38 00 74 05 e8 50 f3 0e fb 48 8b bb 58 05 00 00 e8 34 36 93 fc 48 89 df 5b 41 5e 41 5f e9 87 d8 02 fb e8 02 b1 a4 fa 90 <0f> 0b 90 eb 80 e8 f7 b0 a4 fa 90 0f 0b 90 eb 9f 90 90 90 90 90 90 RSP: 0018:ffffc90004477910 EFLAGS: 00010293 RAX: ffffffff8720efde RBX: ffff88805e6dd000 RCX: ffff88807c291e80 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffc90004477880 RBP: 0000000000000000 R08: ffffc90004477887 R09: 1ffff9200088ef10 R10: dffffc0000000000 R11: fffff5200088ef11 R12: ffff88806c29c800 R13: ffff88805a748498 R14: ffff88805e6dd478 R15: dffffc0000000000 FS: 00005555778a8500(0000) GS:ffff888125460000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055576a2b2950 CR3: 0000000035bdc000 CR4: 00000000003526f0 Call Trace: nsim_dev_reload_destroy+0x2e3/0x490 drivers/net/netdevsim/dev.c:1768 nsim_drv_remove+0x58/0x170 drivers/net/netdevsim/dev.c:1779 device_remove drivers/base/dd.c:571 [inline] __device_release_driver drivers/base/dd.c:1284 [inline] device_release_driver_internal+0x46f/0x860 drivers/base/dd.c:1307 bus_remove_device+0x34d/0x440 drivers/base/bus.c:616 device_del+0x527/0x8f0 drivers/base/core.c:3878 device_unregister+0x21/0xf0 drivers/base/core.c:3919 nsim_bus_dev_del drivers/net/netdevsim/bus.c:491 [inline] del_device_store+0x2b0/0x370 drivers/net/netdevsim/bus.c:244 kernfs_fop_write_iter+0x3af/0x540 fs/kernfs/file.c:352 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb61355cece Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffc08c9cfc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00005555778a8500 RCX: 00007fb61355cece RDX: 0000000000000001 RSI: 00007ffc08c9d050 RDI: 0000000000000005 RBP: 00007fb61363343f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc08c9d050 R14: 00007fb614344620 R15: 0000000000000003 Tested on: commit: a989fde7 Merge tag 'libnvdimm-fixes-7.0-rc5' of git://.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=118fd3ef980000 kernel config: https://syzkaller.appspot.com/x/.config?x=b643133b3e44c9fd dashboard link: https://syzkaller.appspot.com/bug?extid=7c11975a7e4a2735d529 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 patch: https://syzkaller.appspot.com/x/patch.diff?x=17a9b2da580000