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Wed, 20 Mar 2024 06:26:40 +0000 (UTC) Received: from dovecot-director2.suse.de ([10.150.64.162]) by imap1.dmz-prg2.suse.org with ESMTPSA id Yj7aDqCB+mVuGQAAD6G6ig (envelope-from ); Wed, 20 Mar 2024 06:26:40 +0000 Date: Wed, 20 Mar 2024 07:26:39 +0100 Message-ID: <87wmpxto4g.wl-tiwai@suse.de> From: Takashi Iwai To: Mirsad Todorovac Cc: linux-sound@vger.kernel.org, Jaroslav Kysela , Takashi Iwai , Curtis Malainey , linux-kernel@vger.kernel.org Subject: Re: [BUG] alsa: KMEMLEAK in pulseaudio and alsa-sink-ALC89 In-Reply-To: References: User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/27.2 Mule/6.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Spam-Level: Authentication-Results: smtp-out1.suse.de; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=fNUr1Rq2; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=Vh1NHMWJ X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Result: default: False [-1.54 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCPT_COUNT_FIVE(0.00)[6]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; DKIM_TRACE(0.00)[suse.de:+]; MX_GOOD(-0.01)[]; MID_CONTAINS_FROM(1.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; NEURAL_HAM_SHORT(-0.20)[-0.976]; RCVD_TLS_ALL(0.00)[]; BAYES_HAM(-1.03)[87.54%] X-Spam-Score: -1.54 X-Rspamd-Queue-Id: 7DED12253D X-Spam-Flag: NO On Wed, 20 Mar 2024 02:13:08 +0100, Mirsad Todorovac wrote: > > Hi, > > On Ubuntu 22.04 LTS, with the torvalds tree kernel vanilla v6.8-11167-g4438a810f396, > there is like 660K memory leaks sized 2048 bytes (1.35 GB) > > unreferenced object 0xffff919c43c7c800 (size 2048): > unreferenced object 0xffff919c43c78000 (size 2048): > unreferenced object 0xffff919c43c79800 (size 2048): > root@defiant:/home/marvin/linux/kernel/linux_torvalds# grep size ~marvin/linux/kernel_bugs/v6.8-11167/kmemleak.log | wc -l > 663265 > root@defiant:/home/marvin/linux/kernel/linux_torvalds# > > Please find the .config attached. > > The kmemleak output is: > > unreferenced object 0xffff9199526ba800 (size 2048): > comm "pulseaudio", pid 2533, jiffies 4294900352 > hex dump (first 32 bytes): > 04 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 ................ > 49 45 43 39 35 38 20 50 6c 61 79 62 61 63 6b 20 IEC958 Playback > backtrace (crc 87c1dcdc): > [] kmemleak_alloc+0x4b/0x90 > [] __kmalloc_node_track_caller+0x3c7/0x530 > [] memdup_user+0x2b/0xb0 > [] snd_ctl_ioctl+0x726/0x860 [snd] > [] __x64_sys_ioctl+0x9d/0xe0 > [] do_syscall_64+0x83/0x150 > [] entry_SYSCALL_64_after_hwframe+0x6c/0x74 Thanks for the report. This was indeed an overlooked marking of __free(kfree). I'll submit the fix patch. Takashi