From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f71.google.com (mail-ot1-f71.google.com [209.85.210.71]) (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 20532339391 for ; Tue, 11 Aug 2026 10:36:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786444587; cv=none; b=RuacJvB657kwRJtjcebw/JL+AmswmCNXS1zlf5M/+PsET3JkBbSPaZKIeti4NKYU1lJDYNm2CnmvGBRcOkWWn38LBtX64w5Mvgk6s4cWFPHrUizQAp2Rrwoz+CdzA3Wd+FK2VeG5aT9wXOQ6xaNRbyn4WUQrGBt/9MxS5U0FEKo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786444587; c=relaxed/simple; bh=rXnqeVJzsCsv8oa0Z5I0vF68kADPeFRjAl2erJrVO9E=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To:Cc: Content-Type; b=nCEg9dFeDIsV3lyagaY+lM0Nc8PwGbS7vs2oVRv1ZPhspgowUjGoz9pSwxaHvs4C3VYgZqW3PajPY+s/8Ir7R3LUY1gkWzbp+d0Vw0xeIZyTubITjglyrmlqw4T7MCpd9Mq4Duk+jZKDMyU3hfG4fs7lCAqTdWtrBG84rpEqaNQ= 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=209.85.210.71 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-ot1-f71.google.com with SMTP id 46e09a7af769-7eb650e79adso2695754a34.3 for ; Tue, 11 Aug 2026 03:36:25 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786444585; x=1787049385; h=content-type:cc:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=rXnqeVJzsCsv8oa0Z5I0vF68kADPeFRjAl2erJrVO9E=; b=kllGZxPptBmzzwSRot35f4sSpU2Cr8w90JYfOBEtWbHLs/smeO1QFohIHqRlZnOF9s yXvkM6rRelqqX4IRAhEL/hyGNi7mODIfjhuO1m/IJzUqBnxLXwwnHBy2QPHx+POtfZiY d1hYbUik61pQOWSrZJjCVh+031gD5TN1qm6DQsGbaQSZ/1pJNglIq1jbPzqBbP3/BYyb IJvyZ9cR5IIIoWIBFmBzp8NBSEALjLN1YrxjRmjZJ++KxTJHrkfSpuqwgnmKWg/wQy/C D/mdhh/4RSccn09zTzIC56EqTk4PCvkEKtAyIF6WvVx++v0iK9ZmpkUmpQqGMKAyHprM MXSQ== X-Forwarded-Encrypted: i=1; AHgh+RoLvRmBi3tI4ajjZOdF6gkhxnnvSXYmIdKBfRigOGYWdlyFLSgWmHtwRaA6erS/x5R1Sx3tnQocRgV5pFE=@vger.kernel.org X-Gm-Message-State: AOJu0YwOK3I/oHavbPfRt30MP0LvtQpEwSc4lHdCpWJnkVkumq4mw/bb +4LHbHmq+XbK06VeKUSK7HYw8/R/eRDZcErb1vrC5wnAdaK88X7NN5YZtPc0f0I00+GAkS6WJkt 2hUnTHt5j9xU4E8DGMQriMplrJI6f8FoeKScV+EeS2znDHHI+gz4x9wsTssw= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:617:b0:6ac:b6c0:2c09 with SMTP id 006d021491bc7-6b0a2f6d78dmr1194145eaf.1.1786444585073; Tue, 11 Aug 2026 03:36:25 -0700 (PDT) Date: Tue, 11 Aug 2026 03:36:25 -0700 In-Reply-To: <8088767c672d154f7983ccfc5472e38b9cfc85f0.camel@infradead.org> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a7afb29.9c11d2ce.289b96.0104.GAE@google.com> Subject: Re: [syzbot] [kvm?] [kvm-x86?] BUG: sleeping function called from invalid context in kvm_xen_set_evtchn_fast From: syzbot To: dwmw2@infradead.org Cc: dwmw2@infradead.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, seanjc@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" > This should be fixed by the SRCU conversion of the gfn_to_pfn_cache > locking, which removes the rwlock which was being taken in hardirq > context. Please test the branch which contains it: > > #syz test: git://git.infradead.org/users/dwmw2/linux.git xen-srcu-fixed This crash does not have a reproducer. I cannot test it.