From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CBEB11C08 for ; Wed, 28 Dec 2022 16:46:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 478C6C433D2; Wed, 28 Dec 2022 16:46:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672245990; bh=zC6lvUdZEtVn13IPbikSY5Yln/XTvATTCPY+B0G6TfE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EFYdWSXTpo0cw8BB1Fsv1wr5LMwtlxr6nldiE+qXUV/CEo3muEzBq0W4eIdDo/ITB Ghv9EvrbUXDnDrkNNq2Oq5/MY8DE9Y/bwKJILsCRnuXrPkR1zW71SEvuW1Onbhu9DS ej8zA38jA9G9EaHforGOptae4FIiV5P/6XTBqiOg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhang Xiaoxu , Mike Marshall , Sasha Levin Subject: [PATCH 6.0 0992/1073] orangefs: Fix kmemleak in orangefs_sysfs_init() Date: Wed, 28 Dec 2022 15:43:00 +0100 Message-Id: <20221228144355.056123088@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221228144328.162723588@linuxfoundation.org> References: <20221228144328.162723588@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Zhang Xiaoxu [ Upstream commit 1f2c0e8a587bcafad85019a2d80f158d8d41a868 ] When insert and remove the orangefs module, there are kobjects memory leaked as below: unreferenced object 0xffff88810f95af00 (size 64): comm "insmod", pid 783, jiffies 4294813439 (age 65.512s) hex dump (first 32 bytes): a0 83 af 01 81 88 ff ff 08 af 95 0f 81 88 ff ff ................ 08 af 95 0f 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000031ab7788>] kmalloc_trace+0x27/0xa0 [<000000005a6e4dfe>] orangefs_sysfs_init+0x42/0x3a0 [<00000000722645ca>] 0xffffffffa02780fe [<000000004232d9f7>] do_one_initcall+0x87/0x2a0 [<0000000054f22384>] do_init_module+0xdf/0x320 [<000000003263bdea>] load_module+0x2f98/0x3330 [<0000000052cd4153>] __do_sys_finit_module+0x113/0x1b0 [<00000000250ae02b>] do_syscall_64+0x35/0x80 [<00000000f11c03c7>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 unreferenced object 0xffff88810f95ae80 (size 64): comm "insmod", pid 783, jiffies 4294813439 (age 65.512s) hex dump (first 32 bytes): c8 90 0f 02 81 88 ff ff 88 ae 95 0f 81 88 ff ff ................ 88 ae 95 0f 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000031ab7788>] kmalloc_trace+0x27/0xa0 [<000000001a4841fa>] orangefs_sysfs_init+0xc7/0x3a0 [<00000000722645ca>] 0xffffffffa02780fe [<000000004232d9f7>] do_one_initcall+0x87/0x2a0 [<0000000054f22384>] do_init_module+0xdf/0x320 [<000000003263bdea>] load_module+0x2f98/0x3330 [<0000000052cd4153>] __do_sys_finit_module+0x113/0x1b0 [<00000000250ae02b>] do_syscall_64+0x35/0x80 [<00000000f11c03c7>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 unreferenced object 0xffff88810f95ae00 (size 64): comm "insmod", pid 783, jiffies 4294813440 (age 65.511s) hex dump (first 32 bytes): 60 87 a1 00 81 88 ff ff 08 ae 95 0f 81 88 ff ff `............... 08 ae 95 0f 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000031ab7788>] kmalloc_trace+0x27/0xa0 [<000000005915e797>] orangefs_sysfs_init+0x12b/0x3a0 [<00000000722645ca>] 0xffffffffa02780fe [<000000004232d9f7>] do_one_initcall+0x87/0x2a0 [<0000000054f22384>] do_init_module+0xdf/0x320 [<000000003263bdea>] load_module+0x2f98/0x3330 [<0000000052cd4153>] __do_sys_finit_module+0x113/0x1b0 [<00000000250ae02b>] do_syscall_64+0x35/0x80 [<00000000f11c03c7>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 unreferenced object 0xffff88810f95ad80 (size 64): comm "insmod", pid 783, jiffies 4294813440 (age 65.511s) hex dump (first 32 bytes): 78 90 0f 02 81 88 ff ff 88 ad 95 0f 81 88 ff ff x............... 88 ad 95 0f 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000031ab7788>] kmalloc_trace+0x27/0xa0 [<000000007a14eb35>] orangefs_sysfs_init+0x1ac/0x3a0 [<00000000722645ca>] 0xffffffffa02780fe [<000000004232d9f7>] do_one_initcall+0x87/0x2a0 [<0000000054f22384>] do_init_module+0xdf/0x320 [<000000003263bdea>] load_module+0x2f98/0x3330 [<0000000052cd4153>] __do_sys_finit_module+0x113/0x1b0 [<00000000250ae02b>] do_syscall_64+0x35/0x80 [<00000000f11c03c7>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 unreferenced object 0xffff88810f95ac00 (size 64): comm "insmod", pid 783, jiffies 4294813440 (age 65.531s) hex dump (first 32 bytes): e0 ff 67 02 81 88 ff ff 08 ac 95 0f 81 88 ff ff ..g............. 08 ac 95 0f 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000031ab7788>] kmalloc_trace+0x27/0xa0 [<000000001f38adcb>] orangefs_sysfs_init+0x291/0x3a0 [<00000000722645ca>] 0xffffffffa02780fe [<000000004232d9f7>] do_one_initcall+0x87/0x2a0 [<0000000054f22384>] do_init_module+0xdf/0x320 [<000000003263bdea>] load_module+0x2f98/0x3330 [<0000000052cd4153>] __do_sys_finit_module+0x113/0x1b0 [<00000000250ae02b>] do_syscall_64+0x35/0x80 [<00000000f11c03c7>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 unreferenced object 0xffff88810f95ab80 (size 64): comm "insmod", pid 783, jiffies 4294813441 (age 65.530s) hex dump (first 32 bytes): 50 bf 2f 02 81 88 ff ff 88 ab 95 0f 81 88 ff ff P./............. 88 ab 95 0f 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000031ab7788>] kmalloc_trace+0x27/0xa0 [<000000009cc7d95b>] orangefs_sysfs_init+0x2f5/0x3a0 [<00000000722645ca>] 0xffffffffa02780fe [<000000004232d9f7>] do_one_initcall+0x87/0x2a0 [<0000000054f22384>] do_init_module+0xdf/0x320 [<000000003263bdea>] load_module+0x2f98/0x3330 [<0000000052cd4153>] __do_sys_finit_module+0x113/0x1b0 [<00000000250ae02b>] do_syscall_64+0x35/0x80 [<00000000f11c03c7>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 Should add release function for each kobject_type to free the memory. Signed-off-by: Zhang Xiaoxu Signed-off-by: Mike Marshall Signed-off-by: Sasha Levin --- fs/orangefs/orangefs-sysfs.c | 71 ++++++++++++++++++++++++++++++++---- 1 file changed, 63 insertions(+), 8 deletions(-) diff --git a/fs/orangefs/orangefs-sysfs.c b/fs/orangefs/orangefs-sysfs.c index de80b62553bb..be4ba03a01a0 100644 --- a/fs/orangefs/orangefs-sysfs.c +++ b/fs/orangefs/orangefs-sysfs.c @@ -896,9 +896,18 @@ static struct attribute *orangefs_default_attrs[] = { }; ATTRIBUTE_GROUPS(orangefs_default); +static struct kobject *orangefs_obj; + +static void orangefs_obj_release(struct kobject *kobj) +{ + kfree(orangefs_obj); + orangefs_obj = NULL; +} + static struct kobj_type orangefs_ktype = { .sysfs_ops = &orangefs_sysfs_ops, .default_groups = orangefs_default_groups, + .release = orangefs_obj_release, }; static struct orangefs_attribute acache_hard_limit_attribute = @@ -934,9 +943,18 @@ static struct attribute *acache_orangefs_default_attrs[] = { }; ATTRIBUTE_GROUPS(acache_orangefs_default); +static struct kobject *acache_orangefs_obj; + +static void acache_orangefs_obj_release(struct kobject *kobj) +{ + kfree(acache_orangefs_obj); + acache_orangefs_obj = NULL; +} + static struct kobj_type acache_orangefs_ktype = { .sysfs_ops = &orangefs_sysfs_ops, .default_groups = acache_orangefs_default_groups, + .release = acache_orangefs_obj_release, }; static struct orangefs_attribute capcache_hard_limit_attribute = @@ -972,9 +990,18 @@ static struct attribute *capcache_orangefs_default_attrs[] = { }; ATTRIBUTE_GROUPS(capcache_orangefs_default); +static struct kobject *capcache_orangefs_obj; + +static void capcache_orangefs_obj_release(struct kobject *kobj) +{ + kfree(capcache_orangefs_obj); + capcache_orangefs_obj = NULL; +} + static struct kobj_type capcache_orangefs_ktype = { .sysfs_ops = &orangefs_sysfs_ops, .default_groups = capcache_orangefs_default_groups, + .release = capcache_orangefs_obj_release, }; static struct orangefs_attribute ccache_hard_limit_attribute = @@ -1010,9 +1037,18 @@ static struct attribute *ccache_orangefs_default_attrs[] = { }; ATTRIBUTE_GROUPS(ccache_orangefs_default); +static struct kobject *ccache_orangefs_obj; + +static void ccache_orangefs_obj_release(struct kobject *kobj) +{ + kfree(ccache_orangefs_obj); + ccache_orangefs_obj = NULL; +} + static struct kobj_type ccache_orangefs_ktype = { .sysfs_ops = &orangefs_sysfs_ops, .default_groups = ccache_orangefs_default_groups, + .release = ccache_orangefs_obj_release, }; static struct orangefs_attribute ncache_hard_limit_attribute = @@ -1048,9 +1084,18 @@ static struct attribute *ncache_orangefs_default_attrs[] = { }; ATTRIBUTE_GROUPS(ncache_orangefs_default); +static struct kobject *ncache_orangefs_obj; + +static void ncache_orangefs_obj_release(struct kobject *kobj) +{ + kfree(ncache_orangefs_obj); + ncache_orangefs_obj = NULL; +} + static struct kobj_type ncache_orangefs_ktype = { .sysfs_ops = &orangefs_sysfs_ops, .default_groups = ncache_orangefs_default_groups, + .release = ncache_orangefs_obj_release, }; static struct orangefs_attribute pc_acache_attribute = @@ -1079,9 +1124,18 @@ static struct attribute *pc_orangefs_default_attrs[] = { }; ATTRIBUTE_GROUPS(pc_orangefs_default); +static struct kobject *pc_orangefs_obj; + +static void pc_orangefs_obj_release(struct kobject *kobj) +{ + kfree(pc_orangefs_obj); + pc_orangefs_obj = NULL; +} + static struct kobj_type pc_orangefs_ktype = { .sysfs_ops = &orangefs_sysfs_ops, .default_groups = pc_orangefs_default_groups, + .release = pc_orangefs_obj_release, }; static struct orangefs_attribute stats_reads_attribute = @@ -1103,19 +1157,20 @@ static struct attribute *stats_orangefs_default_attrs[] = { }; ATTRIBUTE_GROUPS(stats_orangefs_default); +static struct kobject *stats_orangefs_obj; + +static void stats_orangefs_obj_release(struct kobject *kobj) +{ + kfree(stats_orangefs_obj); + stats_orangefs_obj = NULL; +} + static struct kobj_type stats_orangefs_ktype = { .sysfs_ops = &orangefs_sysfs_ops, .default_groups = stats_orangefs_default_groups, + .release = stats_orangefs_obj_release, }; -static struct kobject *orangefs_obj; -static struct kobject *acache_orangefs_obj; -static struct kobject *capcache_orangefs_obj; -static struct kobject *ccache_orangefs_obj; -static struct kobject *ncache_orangefs_obj; -static struct kobject *pc_orangefs_obj; -static struct kobject *stats_orangefs_obj; - int orangefs_sysfs_init(void) { int rc = -EINVAL; -- 2.35.1