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Wed, 9 Mar 2022 02:03:04 +0000 From: "xuyang2018.jy@fujitsu.com" To: Martin Doucha Thread-Topic: [LTP] [PATCH] syscalls/setsockopt09: Add another linux git Thread-Index: AQHYLtx4CjNbvmY4GEm3jKnRYeFwH6ytsXoAgADfuQCABsQqgIABAMMA Date: Wed, 9 Mar 2022 02:03:04 +0000 Message-ID: <62280B08.3010502@fujitsu.com> References: <1646297678-2141-1-git-send-email-xuyang2018.jy@fujitsu.com> <6221869A.9040109@fujitsu.com> <3c946010-2f96-e8bb-e7ee-0d48d482d729@suse.cz> In-Reply-To: <3c946010-2f96-e8bb-e7ee-0d48d482d729@suse.cz> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=fujitsu.com; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 85c9e46e-57af-4cc6-3838-08da0170f2b0 x-ms-traffictypediagnostic: TY1PR01MB1642:EE_ x-microsoft-antispam-prvs: x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Hi Martin > On 04. 03. 22 4:24, xuyang2018.jy@fujitsu.com wrote: >> Hi Petr >>> Hi Xu, >>> >>>> On centos7.9ga, I still hit another crash problem because of use-after-free in >>>> prb_retire_rx_blk_timer_expired(). Since we free it when timer expired, so this >>>> case will crash after we print TPASS info. >>> >>> Reviewed-by: Petr Vorel >>> >>> LGTM. >>> I tested two old kernels, the one with patch survives, the other got reboot. >>> >>> BTW funny enough the affected system manages to print "TPASS: Nothing bad >>> happened, probably" before reboot :). >> Yes, it crash when timer expired, so it will print TPASS before reboot. >> Also, I try sleep 10ms, but it still print TPASS and reboot after serval >> seconds. > > The timeout is controlled by req.tp_retire_blk_tov and the value is in > milliseconds. So usleep(req.tp_retire_blk_tov * 3000) should be enough. I tested this on my vm, it still can't ensure hit the old crash before print PASS log. Best Regards Yang Xu > -- Mailing list info: https://lists.linux.it/listinfo/ltp