From nobody Sun Nov 24 09:25:03 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=suse.de ARC-Seal: i=1; a=rsa-sha256; t=1724173727; cv=none; d=zohomail.com; s=zohoarc; b=GYpNJ/YQy0ItNxktXl/52RitJ/6EE0ft+CxQDcJGJsQM8vtqJZfJpiezFiRinvu57L0xvShuUxbWxHrIaeErtAUjrfUO1LcchX9jhKYcxv/QLujlwYVvZJfoaHa1pBMwlIpJjyO7JfilhzdPuIgmwUhgabpmRpykoIesdP/eKu0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1724173727; h=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; bh=XLw0kKg9KVAuTkembzTxqyMpoF7BRWSo5aG/NLnlwpM=; b=BFazbsOol7TkBGpRo0+/ukkNiDYdNekAk46YebXvhGG4VcDUOtOo/6IDl3fUD9ufrFQ+Oe87qlbpI8IOYMjoXe8xuCsQ+CRxwWm6EdZjoAY3ZgpiT201w0+KVPRgU6sdtjJVz/YgSw51cEnXBEIM1pV/pfr+U56CvaWKHQ+CEtU= ARC-Authentication-Results: i=1; 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 header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1724173727713265.67702657982295; Tue, 20 Aug 2024 10:08:47 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sgSLF-0003nf-No; Tue, 20 Aug 2024 13:08:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sgSKz-0003ln-MU; Tue, 20 Aug 2024 13:08:07 -0400 Received: from smtp-out2.suse.de ([2a07:de40:b251:101:10:150:64:2]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sgSKv-0007bQ-NG; Tue, 20 Aug 2024 13:08:04 -0400 Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 73FE02001C; Tue, 20 Aug 2024 17:07:59 +0000 (UTC) Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id CED4B13770; Tue, 20 Aug 2024 17:07:57 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id gMTcJG3NxGZfUwAAD6G6ig (envelope-from ); Tue, 20 Aug 2024 17:07:57 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1724173679; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XLw0kKg9KVAuTkembzTxqyMpoF7BRWSo5aG/NLnlwpM=; b=OrzpHgqe02If0yDulW04EoFSjsXt6A9QZSqw0elFsMU49Q6tgOINh10oC1UswCTn0vY2vE R39nWah0abN/bbwkBRGdbHGSud+tFB3i46/OEx8kR/pYWSI7gcLghh2jW95beQPQjM6Ipt wziN7ddcFZvPVbFIzW7jCXIzs/kkLqI= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1724173679; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XLw0kKg9KVAuTkembzTxqyMpoF7BRWSo5aG/NLnlwpM=; b=qvQPnR3Tc/vrh0jqvAvOW+hvJTDn9osdIMAVD4cA+W/Zvm/RjHZAgqeZZawKpO9s7uOIqi MSbml0oA7FkwAYCA== Authentication-Results: smtp-out2.suse.de; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=OrzpHgqe; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=qvQPnR3T DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1724173679; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XLw0kKg9KVAuTkembzTxqyMpoF7BRWSo5aG/NLnlwpM=; b=OrzpHgqe02If0yDulW04EoFSjsXt6A9QZSqw0elFsMU49Q6tgOINh10oC1UswCTn0vY2vE R39nWah0abN/bbwkBRGdbHGSud+tFB3i46/OEx8kR/pYWSI7gcLghh2jW95beQPQjM6Ipt wziN7ddcFZvPVbFIzW7jCXIzs/kkLqI= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1724173679; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XLw0kKg9KVAuTkembzTxqyMpoF7BRWSo5aG/NLnlwpM=; b=qvQPnR3Tc/vrh0jqvAvOW+hvJTDn9osdIMAVD4cA+W/Zvm/RjHZAgqeZZawKpO9s7uOIqi MSbml0oA7FkwAYCA== From: Fabiano Rosas To: qemu-devel@nongnu.org Cc: Peter Xu , Richard Henderson , Peter Maydell , qemu-stable@nongnu.org Subject: [PULL 1/1] migration/multifd: Free MultiFDRecvParams::data Date: Tue, 20 Aug 2024 14:07:41 -0300 Message-Id: <20240820170741.27055-2-farosas@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240820170741.27055-1-farosas@suse.de> References: <20240820170741.27055-1-farosas@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 73FE02001C X-Spam-Score: -5.01 X-Rspamd-Action: no action X-Spamd-Result: default: False [-5.01 / 50.00]; BAYES_HAM(-3.00)[100.00%]; DWL_DNSWL_MED(-2.00)[suse.de:dkim]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-0.999]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FUZZY_BLOCKED(0.00)[rspamd.com]; TO_DN_SOME(0.00)[]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; DNSWL_BLOCKED(0.00)[2a07:de40:b281:106:10:150:64:167:received]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.de:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCPT_COUNT_FIVE(0.00)[5]; DBL_BLOCKED_OPENRESOLVER(0.00)[linaro.org:email, imap1.dmz-prg2.suse.org:rdns, imap1.dmz-prg2.suse.org:helo] X-Rspamd-Server: rspamd1.dmz-prg2.suse.org 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=2a07:de40:b251:101:10:150:64:2; envelope-from=farosas@suse.de; helo=smtp-out2.suse.de 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, 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 @suse.de) X-ZM-MESSAGEID: 1724173728716116600 Content-Type: text/plain; charset="utf-8" From: Peter Maydell In multifd_recv_setup() we allocate (among other things) * a MultiFDRecvData struct to multifd_recv_state::data * a MultiFDRecvData struct to each multfd_recv_state->params[i].data (Then during execution we might swap these pointers around.) But in multifd_recv_cleanup() we free multifd_recv_state->data in multifd_recv_cleanup_state() but we don't ever free the multifd_recv_state->params[i].data. This results in a memory leak reported by LeakSanitizer: (cd build/asan && \ ASAN_OPTIONS=3D"fast_unwind_on_malloc=3D0:strip_path_prefix=3D/mnt/nvmed= isk/linaro/qemu-from-laptop/qemu/build/asan/../../" \ QTEST_QEMU_BINARY=3D./qemu-system-x86_64 \ ./tests/qtest/migration-test --tap -k -p /x86_64/migration/multifd/file/= mapped-ram ) [...] Direct leak of 72 byte(s) in 3 object(s) allocated from: #0 0x561cc0afcfd8 in __interceptor_calloc (/mnt/nvmedisk/linaro/qemu-fr= om-laptop/qemu/build/asan/qemu-system-x86_64+0x218efd8) (BuildId: be72e086d= 4e47b172b0a72779972213fd9916466) #1 0x7f89d37acc50 in g_malloc0 debian/build/deb/../../../glib/gmem.c:16= 1:13 #2 0x561cc1e9c83c in multifd_recv_setup migration/multifd.c:1606:19 #3 0x561cc1e68618 in migration_ioc_process_incoming migration/migration= .c:972:9 #4 0x561cc1e3ac59 in migration_channel_process_incoming migration/chann= el.c:45:9 #5 0x561cc1e4fa0b in file_accept_incoming_migration migration/file.c:13= 2:5 #6 0x561cc30f2c0c in qio_channel_fd_source_dispatch io/channel-watch.c:= 84:12 #7 0x7f89d37a3c43 in g_main_dispatch debian/build/deb/../../../glib/gma= in.c:3419:28 #8 0x7f89d37a3c43 in g_main_context_dispatch debian/build/deb/../../../= glib/gmain.c:4137:7 #9 0x561cc3b21659 in glib_pollfds_poll util/main-loop.c:287:9 #10 0x561cc3b1ff93 in os_host_main_loop_wait util/main-loop.c:310:5 #11 0x561cc3b1fb5c in main_loop_wait util/main-loop.c:589:11 #12 0x561cc1da2917 in qemu_main_loop system/runstate.c:801:9 #13 0x561cc3796c1c in qemu_default_main system/main.c:37:14 #14 0x561cc3796c67 in main system/main.c:48:12 #15 0x7f89d163bd8f in __libc_start_call_main csu/../sysdeps/nptl/libc_s= tart_call_main.h:58:16 #16 0x7f89d163be3f in __libc_start_main csu/../csu/libc-start.c:392:3 #17 0x561cc0a79fa4 in _start (/mnt/nvmedisk/linaro/qemu-from-laptop/qem= u/build/asan/qemu-system-x86_64+0x210bfa4) (BuildId: be72e086d4e47b172b0a72= 779972213fd9916466) Direct leak of 24 byte(s) in 1 object(s) allocated from: #0 0x561cc0afcfd8 in __interceptor_calloc (/mnt/nvmedisk/linaro/qemu-fr= om-laptop/qemu/build/asan/qemu-system-x86_64+0x218efd8) (BuildId: be72e086d= 4e47b172b0a72779972213fd9916466) #1 0x7f89d37acc50 in g_malloc0 debian/build/deb/../../../glib/gmem.c:16= 1:13 #2 0x561cc1e9bed9 in multifd_recv_setup migration/multifd.c:1588:32 #3 0x561cc1e68618 in migration_ioc_process_incoming migration/migration= .c:972:9 #4 0x561cc1e3ac59 in migration_channel_process_incoming migration/chann= el.c:45:9 #5 0x561cc1e4fa0b in file_accept_incoming_migration migration/file.c:13= 2:5 #6 0x561cc30f2c0c in qio_channel_fd_source_dispatch io/channel-watch.c:= 84:12 #7 0x7f89d37a3c43 in g_main_dispatch debian/build/deb/../../../glib/gma= in.c:3419:28 #8 0x7f89d37a3c43 in g_main_context_dispatch debian/build/deb/../../../= glib/gmain.c:4137:7 #9 0x561cc3b21659 in glib_pollfds_poll util/main-loop.c:287:9 #10 0x561cc3b1ff93 in os_host_main_loop_wait util/main-loop.c:310:5 #11 0x561cc3b1fb5c in main_loop_wait util/main-loop.c:589:11 #12 0x561cc1da2917 in qemu_main_loop system/runstate.c:801:9 #13 0x561cc3796c1c in qemu_default_main system/main.c:37:14 #14 0x561cc3796c67 in main system/main.c:48:12 #15 0x7f89d163bd8f in __libc_start_call_main csu/../sysdeps/nptl/libc_s= tart_call_main.h:58:16 #16 0x7f89d163be3f in __libc_start_main csu/../csu/libc-start.c:392:3 #17 0x561cc0a79fa4 in _start (/mnt/nvmedisk/linaro/qemu-from-laptop/qem= u/build/asan/qemu-system-x86_64+0x210bfa4) (BuildId: be72e086d4e47b172b0a72= 779972213fd9916466) SUMMARY: AddressSanitizer: 96 byte(s) leaked in 4 allocation(s). Free the params[i].data too. Cc: qemu-stable@nongnu.org Fixes: d117ed0699d41 ("migration/multifd: Allow receiving pages without pac= kets") Signed-off-by: Peter Maydell Reviewed-by: Fabiano Rosas Signed-off-by: Fabiano Rosas --- migration/multifd.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/migration/multifd.c b/migration/multifd.c index 552f9723c8..a6db05502a 100644 --- a/migration/multifd.c +++ b/migration/multifd.c @@ -1357,6 +1357,8 @@ static void multifd_recv_cleanup_channel(MultiFDRecvP= arams *p) qemu_mutex_destroy(&p->mutex); qemu_sem_destroy(&p->sem_sync); qemu_sem_destroy(&p->sem); + g_free(p->data); + p->data =3D NULL; g_free(p->name); p->name =3D NULL; p->packet_len =3D 0; --=20 2.35.3