From nobody Mon Oct 6 04:59:33 2025 Received: from mail-ed1-f73.google.com (mail-ed1-f73.google.com [209.85.208.73]) (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 43372238140 for ; Thu, 24 Jul 2025 10:30:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753353038; cv=none; b=JoZLt/PvNe9xRKpRvH9gdPykF6+NsyYWOpyuZe82pAwJYEUL1707BPrpwNZml3eEZqgVJGbbrWICvjQEufzItEFM/sx1A+bMzZkYcco0eukhqsDrIrGHfIMytkpDTS+mOiLXb4IrgpkZWOA3Ak9JVMmJOI9T3RiqGOD24bm7dD8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753353038; c=relaxed/simple; bh=vozlwhWTTZeaBLTOrUwLbKibMiWfdaAf3uRpxQQtEhc=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=FFMimglYoCDAsIfu3wT99PmOA9bs2uVMVdnPoUYBMSqkO7HkyqJwou5eHTllTCbCu00ECYspBLkOczMNuKXDO72zHPFWihg0FFaPFW4IfSB7S2NT6j3yHSY5Aeg3dGGQyqUrdPth4DDV9a4mhO48jvgU9VLJbOboZMYJ9UvSljU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jprusakowski.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=kFGqNdSq; arc=none smtp.client-ip=209.85.208.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--jprusakowski.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="kFGqNdSq" Received: by mail-ed1-f73.google.com with SMTP id 4fb4d7f45d1cf-607434dbc78so1018736a12.1 for ; Thu, 24 Jul 2025 03:30:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1753353035; x=1753957835; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=oP7cxGwm/mObhghxpyauLVJ+5M/Q63eusIkmXcjkDec=; b=kFGqNdSqxZ0PMEnHkzyd3Z+XpiCz9r6ip8/ptcFhLP5l50gDhuJo8pu2ZTsn8Rav5x /Y82/5G5b0MIQYeTew2JuoovtMJeap0962CYR0UNS1qRNcJK1XZ9pA6IBVhLngaach/H YIwE2WpcDpX9Wjdwmj4dcT+u1LCFJm16zYv6YFtU/5mma7FhVu3mBkitPt+MFx0RhajX 3FN+9HjKaNpNYm+NsG7pj7T/Fduy5zqTmOXENnyB0JXAZCMt4fJlhLD9btFcR7pwnzZG pKt+pLAgcN2NGurtI/TOWwd/NqMgnDgffmA+XhZYsUjYHPhQYDSITY8hKHc9PRXmRbBd sorQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753353035; x=1753957835; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=oP7cxGwm/mObhghxpyauLVJ+5M/Q63eusIkmXcjkDec=; b=Dsuoh/gwOeaZvTuTlBieSvDyE85FbXG8TNHjeiHNebYFlDSqjE527xxvizQKrFBVo3 iXPkVpPyrySFdkvcMVfP1wYLU+U7/QcFNfthtUb5IZK3a0jnM3euHuXCvkmbd465+MrK GL/hY3iK29hjauultBgDB+X0Gi9YaS0a2GlJ7NAV8GY0lYVJnP5ObgKF9YtGpvUUMtM8 0OLvBU4Pt3ZmL1c02McaCQUNukVSFxQNORaPYbcSREP5lpIQKqxu1t17Vcu19x1uA1l6 LV241+LM41QmO6Nd9qFzDUzoB/vTcCVWx0oGcFwx7BlegbyRxBNxMs9lG2HsZPAyjCre 5+RQ== X-Forwarded-Encrypted: i=1; AJvYcCX6uxdVuB6923vsGgQGKv7kBngjFX93y7TKxJZW6717zUFkPnFJPJhtk0UG4/xJSRuMhoEl9Kd61tSlfgc=@vger.kernel.org X-Gm-Message-State: AOJu0YwXtsVFW06v4bCcmlLoUYD7RLtUtY21IFTF7/D1G+YqxRqTpWjO a0RwdfJAzN57uYTI4Jxff079hxvYHt8UscqCzyMSOQ07RFxnZE/tOGlNWJDyOppi/dUDtFxteEQ A69vVKTG/YSsYjkeoSxFvl7/T7iZGgQ== X-Google-Smtp-Source: AGHT+IEW+Ka9VvSms6hDdZ18FHwhQB5dVK6OecnLWTKMyUjuUm/tV39mW4FcyUnZaaFb0VWGkqSjAPHaBgv3/9+78w4= X-Received: from edr13.prod.google.com ([2002:a05:6402:44cd:b0:614:d2e4:82d0]) (user=jprusakowski job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6402:2743:b0:609:7ed1:c791 with SMTP id 4fb4d7f45d1cf-6149b5a6cb9mr5507870a12.32.1753353035529; Thu, 24 Jul 2025 03:30:35 -0700 (PDT) Date: Thu, 24 Jul 2025 12:30:16 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.50.1.487.gc89ff58d15-goog Message-ID: <20250724103016.5164-1-jprusakowski@google.com> Subject: [PATCH] f2fs: vm_unmap_ram() may be called from an invalid context From: Jan Prusakowski To: jaegeuk@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Jan Prusakowski Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" When testing F2FS with xfstests using UFS backed virtual disks the kernel complains sometimes that f2fs_release_decomp_mem() calls vm_unmap_ram() from an invalid context. This patch modifies in_task() check inside f2fs_read_end_io() to also check if interrupts are disabled. This ensures that pages are unmapped asynchronously in an interrupt handler. Fixes: bff139b (f2fs: handle decompress only post processing in softirq) Signed-off-by: Jan Prusakowski Reviewed-by: Chao Yu --- fs/f2fs/data.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index d1a2616d41be..0acc25f996b3 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -280,7 +280,7 @@ static void f2fs_read_end_io(struct bio *bio) { struct f2fs_sb_info *sbi =3D F2FS_F_SB(bio_first_folio_all(bio)); struct bio_post_read_ctx *ctx; - bool intask =3D in_task(); + bool intask =3D in_task() && !irqs_disabled(); =20 iostat_update_and_unbind_ctx(bio); ctx =3D bio->bi_private; --=20 2.50.0.727.gbf7dc18ff4-goog