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b=r9rvV2t5WoIHxigb2cix72h329s63gZYDKDU5khhtnMwxjPwCMp6MPzlIREJiMFhQ3uD yI8Bbars/Xc04amuo/P6AIPbwH+NG8OT3B+hCZrZ8I594puHmKXyY7gXaxYUrnWTYRiN RIZ1Z53Q3LL/Mk94JlAQcQz0FR1RfGRnX4Lhlzt2N3tCc2FBzdu+vh30mO6d+y/tQnYd mCYcbdGAw6bFzfsxRe6cqTaUCDyyCb3KNE2MpmTrMVSe0txOoNvWEsJioSeC15tohlZ/ lpESt1vi9QtdUNksG87r2svPvW+Qjuu48nqGoCL/1vc/uxFtxKqds1exMnWMiz/+/nF2 ag== From: Stefan Berger To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, =?UTF-8?q?Marc-Andr=DE=B8=20Lureau?= , qemu-stable@nongnu.org, Michael Tokarev , Stefan Berger Subject: [PULL v1 1/1] tpm: fix crash when FD >= 1024 Date: Tue, 12 Sep 2023 17:41:10 -0400 Message-ID: <20230912214110.482744-2-stefanb@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230912214110.482744-1-stefanb@linux.ibm.com> References: <20230912214110.482744-1-stefanb@linux.ibm.com> Content-Type: text/plain; charset="utf-8" X-TM-AS-GCONF: 00 X-Proofpoint-GUID: E8X4zVC5VBnmOCIjxb-kLBIHdUpKF3dB X-Proofpoint-ORIG-GUID: -TQpo7IcPbIIiGQSyQylU0gtUTJUBl8e Content-Transfer-Encoding: quoted-printable X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-09-12_20,2023-09-05_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 mlxlogscore=999 mlxscore=0 suspectscore=0 impostorscore=0 phishscore=0 malwarescore=0 clxscore=1011 priorityscore=1501 bulkscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309120183 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=148.163.158.5; envelope-from=stefanb@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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 @ibm.com) X-ZM-MESSAGEID: 1694554919020100001 From: Marc-Andr=DE=B8 Lureau Replace select() with poll() to fix a crash when QEMU has a large number of FDs. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=3D2020133 Cc: qemu-stable@nongnu.org Fixes: 56a3c24ffc ("tpm: Probe for connected TPM 1.2 or TPM 2") Signed-off-by: Marc-Andr=DE=B8 Lureau Reviewed-by: Michael Tokarev Reviewed-by: Stefan Berger Signed-off-by: Stefan Berger --- backends/tpm/tpm_util.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/backends/tpm/tpm_util.c b/backends/tpm/tpm_util.c index a6e6d3e72f..1856589c3b 100644 --- a/backends/tpm/tpm_util.c +++ b/backends/tpm/tpm_util.c @@ -112,12 +112,8 @@ static int tpm_util_request(int fd, void *response, size_t responselen) { - fd_set readfds; + GPollFD fds[1] =3D { {.fd =3D fd, .events =3D G_IO_IN } }; int n; - struct timeval tv =3D { - .tv_sec =3D 1, - .tv_usec =3D 0, - }; =20 n =3D write(fd, request, requestlen); if (n < 0) { @@ -127,11 +123,8 @@ static int tpm_util_request(int fd, return -EFAULT; } =20 - FD_ZERO(&readfds); - FD_SET(fd, &readfds); - /* wait for a second */ - n =3D select(fd + 1, &readfds, NULL, NULL, &tv); + n =3D RETRY_ON_EINTR(g_poll(fds, 1, 1000)); if (n !=3D 1) { return -errno; } --=20 2.41.0