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Thu, 22 Aug 2024 02:50:54 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Beraldo Leal , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson , Riku Voipio , Laurent Vivier , Cleber Rosa , Paolo Bonzini , Wainer dos Santos Moschetta Subject: [PATCH v2 1/4] accel/tcg: Make page_set_flags() documentation public Date: Thu, 22 Aug 2024 11:50:42 +0200 Message-ID: <20240822095045.72643-2-philmd@linaro.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240822095045.72643-1-philmd@linaro.org> References: <20240822095045.72643-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::331; envelope-from=philmd@linaro.org; helo=mail-wm1-x331.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1724320301403116600 Commit e505a063ba ("translate-all: Add assert_(memory|tb)_lock annotations") states page_set_flags() is "public APIs and [is] documented as needing them held for linux-user mode". Document the prototype. Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson --- include/exec/cpu-all.h | 13 +++++++++++++ accel/tcg/user-exec.c | 5 ----- 2 files changed, 13 insertions(+), 5 deletions(-) diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index 6f09b86e7f..45e6676938 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -166,7 +166,20 @@ typedef int (*walk_memory_regions_fn)(void *, target_u= long, int walk_memory_regions(void *, walk_memory_regions_fn); =20 int page_get_flags(target_ulong address); + +/** + * page_set_flags: + * @start: first byte of range + * @last: last byte of range + * @flags: flags to set + * Context: holding mmap lock + * + * Modify the flags of a page and invalidate the code if necessary. + * The flag PAGE_WRITE_ORG is positioned automatically depending + * on PAGE_WRITE. The mmap_lock should already be held. + */ void page_set_flags(target_ulong start, target_ulong last, int flags); + void page_reset_target_data(target_ulong start, target_ulong last); =20 /** diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c index 7ddc47b0ba..11b6d45e90 100644 --- a/accel/tcg/user-exec.c +++ b/accel/tcg/user-exec.c @@ -485,11 +485,6 @@ static bool pageflags_set_clear(target_ulong start, ta= rget_ulong last, return inval_tb; } =20 -/* - * Modify the flags of a page and invalidate the code if necessary. - * The flag PAGE_WRITE_ORG is positioned automatically depending - * on PAGE_WRITE. The mmap_lock should already be held. - */ void page_set_flags(target_ulong start, target_ulong last, int flags) { bool reset =3D false; --=20 2.45.2 From nobody Sun Nov 24 09:43:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1724320300; cv=none; d=zohomail.com; s=zohoarc; b=njmnvgBvs3nbniH9ma7B81DHGTxF7ixmf00YGJsSQa1JQvXdwwEAO7bM5pRA0fgADB9jO8mKtfvuaJew9wWsV+zLa2GMeI08KCxwTKPHAuC7llkheBGwTdfJibxXXpqleNW1XM7uL/J7HGHyjSfn0MN46Ct/wp7LOKhWG+0F3HI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1724320300; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; 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Thu, 22 Aug 2024 02:51:00 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Beraldo Leal , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson , Riku Voipio , Laurent Vivier , Cleber Rosa , Paolo Bonzini , Wainer dos Santos Moschetta Subject: [PATCH v2 2/4] linux-user/flatload: Take mmap_lock in load_flt_binary() Date: Thu, 22 Aug 2024 11:50:43 +0200 Message-ID: <20240822095045.72643-3-philmd@linaro.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240822095045.72643-1-philmd@linaro.org> References: <20240822095045.72643-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::32f; envelope-from=philmd@linaro.org; helo=mail-wm1-x32f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1724320301398116600 load_flt_binary() calls load_flat_file() -> page_set_flags(). page_set_flags() must be called with the mmap_lock held, otherwise it aborts: $ qemu-arm -L stm32/lib/ stm32/bin/busybox qemu-arm: ../accel/tcg/user-exec.c:505: page_set_flags: Assertion `have_m= map_lock()' failed. Aborted (core dumped) Fix by taking the lock in load_flt_binary(). Fixes: fbd3c4cff6 ("linux-user/arm: Mark the commpage executable") Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2525 Suggested-by: Richard Henderson Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson --- linux-user/flatload.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/linux-user/flatload.c b/linux-user/flatload.c index 04d8138d12..0e4be5bf44 100644 --- a/linux-user/flatload.c +++ b/linux-user/flatload.c @@ -487,7 +487,10 @@ int load_flt_binary(struct linux_binprm *bprm, struct = image_info *info) stack_len +=3D (bprm->envc + 1) * 4; /* the envp array */ =20 =20 + mmap_lock(); res =3D load_flat_file(bprm, libinfo, 0, &stack_len); + mmap_unlock(); + if (is_error(res)) { return res; } --=20 2.45.2 From nobody Sun Nov 24 09:43:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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Fixes: 816d4201ea ("tests/avocado: Move LinuxTest ...") Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Thomas Huth Reviewed-by: Richard Henderson --- tests/avocado/avocado_qemu/__init__.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/avocado/avocado_qemu/__init__.py b/tests/avocado/avocado= _qemu/__init__.py index ef935614cf..0d57addfea 100644 --- a/tests/avocado/avocado_qemu/__init__.py +++ b/tests/avocado/avocado_qemu/__init__.py @@ -17,7 +17,7 @@ import uuid =20 import avocado -from avocado.utils import ssh +from avocado.utils import process, ssh from avocado.utils.path import find_command =20 from qemu.machine import QEMUMachine --=20 2.45.2 From nobody Sun Nov 24 09:43:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1724320351; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::332; envelope-from=philmd@linaro.org; helo=mail-wm1-x332.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1724320351797116600 When this test was added in commit 8011837a01, self.workdir was set to the test directory. As of this commit, it is not set anymore. Rather than using a full path to the busybox binary, we can run it in the current directory, effectively kludging the fact that self.workdir is not set. Good enough to run the test: Fetching asset from tests/avocado/load_bflt.py:LoadBFLT.test_stm32 JOB ID : 020d317281b042f46ad99013530d29df0f1d7eb7 JOB LOG : tests/results/job-2024-08-22T10.17-020d317/job.log (1/1) tests/avocado/load_bflt.py:LoadBFLT.test_stm32: PASS (0.09 s) RESULTS : PASS 1 | ERROR 0 | FAIL 0 | SKIP 0 | WARN 0 | INTERRUPT 0 | = CANCEL 0 JOB TIME : 0.62 s Reported-by: Thomas Huth Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson Reviewed-by: Thomas Huth --- tests/avocado/load_bflt.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/avocado/load_bflt.py b/tests/avocado/load_bflt.py index bb50cec1ee..264489ee25 100644 --- a/tests/avocado/load_bflt.py +++ b/tests/avocado/load_bflt.py @@ -41,7 +41,7 @@ def test_stm32(self): 'Stm32_mini_rootfs.cpio.bz2') rootfs_hash =3D '9f065e6ba40cce7411ba757f924f30fcc57951e6' rootfs_path_bz2 =3D self.fetch_asset(rootfs_url, asset_hash=3Droot= fs_hash) - busybox_path =3D os.path.join(self.workdir, "/bin/busybox") + busybox_path =3D os.path.join(self.workdir, "bin/busybox") =20 self.extract_cpio(rootfs_path_bz2) =20 --=20 2.45.2