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Wed, 15 May 2024 13:17:24 +0000 Date: Wed, 15 May 2024 15:17:19 +0200 From: Petr Vorel To: Andrea Cervesato Message-ID: <20240515131719.GB220651@pevik> References: <20240503081647.18253-1-andrea.cervesato@suse.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20240503081647.18253-1-andrea.cervesato@suse.de> X-Rspamd-Action: no action X-Rspamd-Queue-Id: E661033BAA X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Result: default: False [-3.71 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_RHS_NOT_FQDN(0.50)[]; HAS_REPLYTO(0.30)[pvorel@suse.cz]; R_DKIM_ALLOW(-0.20)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_HAS_DN(0.00)[]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; TO_DN_SOME(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; MISSING_XM_UA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; DKIM_TRACE(0.00)[suse.cz:+]; REPLYTO_EQ_FROM(0.00)[] X-Virus-Scanned: clamav-milter 1.0.3 at in-7.smtp.seeweb.it X-Virus-Status: Clean Subject: Re: [LTP] [PATCH v6] Refactor fork14 using new LTP API X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Petr Vorel Cc: ltp@lists.linux.it Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Hi Andrea, ... > +/*\ > + * [Description] > * > * This test is a reporducer for this patch: s/reporducer/reproducer/ > + * https://lore.kernel.org/lkml/1335289853-2923-1-git-send-email-siddhesh.poyarekar@gmail.com/ > * Since vma length in dup_mmap is calculated and stored in a unsigned > * int, it will overflow when length of mmaped memory > 16 TB. When > + * overflow occurs, fork will incorrectly succeed. The patch above fixed it. > + */ nit: this has been merged to mainline long time ago (kernel 3.5). I'll change before merge to: /*\ * [Description] * * This test is a reproducer for kernel 3.5: * 7edc8b0ac16c ("mm/fork: fix overflow in vma length when copying mmap on clone") * * Since VMA length in dup_mmap() is calculated and stored in a unsigned * int, it will overflow when length of mmaped memory > 16 TB. When * overflow occurs, fork will incorrectly succeed. The patch above fixed it. */ Kind regards, Petr -- Mailing list info: https://lists.linux.it/listinfo/ltp