From: Alexey Fisher <bug-track@fisher-privat.net>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: Kernel Testers List <kernel-testers@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: [kmemleak] 60 wornings on sysfs_new_dirent+0x10c
Date: Sat, 18 Jul 2009 22:29:52 +0200 [thread overview]
Message-ID: <4A6230C0.6000509@fisher-privat.net> (raw)
In-Reply-To: <1247564356.28240.30.camel@pc1117.cambridge.arm.com>
I getting a lot of sysfs_new_dirent warnings with latest ARM git.
this message come if my usb-cardreader is attached.
this are first sysfs_new_dirent warnings:
======================================================
unreferenced object 0xffff880133c580a0 (size 8):
comm "khubd", pid 218, jiffies 4294893605
hex dump (first 8 bytes):
31 2d 36 00 01 88 ff ff 1-6.....
backtrace:
[<ffffffff814a3115>] kmemleak_alloc+0x25/0x60
[<ffffffff810f36ab>] __kmalloc_track_caller+0x10b/0x200
[<ffffffff810d4480>] kstrdup+0x40/0x70
[<ffffffff8115ebdc>] sysfs_new_dirent+0x10c/0x120
[<ffffffff8115f9fd>] create_dir+0x3d/0xb0
[<ffffffff8115faa4>] sysfs_create_dir+0x34/0x50
[<ffffffff8121ea37>] kobject_add_internal+0xb7/0x200
[<ffffffff8121eca8>] kobject_add_varg+0x38/0x60
[<ffffffff8121ed84>] kobject_add+0x44/0x70
[<ffffffff812f8408>] device_add+0x118/0x5d0
[<ffffffff8134914d>] usb_new_device+0x6d/0xe0
[<ffffffff8134adf8>] hub_thread+0x878/0x1280
[<ffffffff810644f6>] kthread+0x96/0xa0
[<ffffffff8100c69a>] child_rip+0xa/0x20
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff880133c653c0 (size 80):
comm "khubd", pid 218, jiffies 4294893605
hex dump (first 32 bytes):
01 00 00 00 00 00 00 80 10 2e 1c 34 01 88 ff ff ...........4....
00 00 00 00 00 00 00 00 a0 80 c5 33 01 88 ff ff ...........3....
backtrace:
[<ffffffff814a3115>] kmemleak_alloc+0x25/0x60
[<ffffffff810f2aeb>] kmem_cache_alloc+0xfb/0x180
[<ffffffff8115eb0c>] sysfs_new_dirent+0x3c/0x120
[<ffffffff8115f9fd>] create_dir+0x3d/0xb0
[<ffffffff8115faa4>] sysfs_create_dir+0x34/0x50
[<ffffffff8121ea37>] kobject_add_internal+0xb7/0x200
[<ffffffff8121eca8>] kobject_add_varg+0x38/0x60
[<ffffffff8121ed84>] kobject_add+0x44/0x70
[<ffffffff812f8408>] device_add+0x118/0x5d0
[<ffffffff8134914d>] usb_new_device+0x6d/0xe0
[<ffffffff8134adf8>] hub_thread+0x878/0x1280
[<ffffffff810644f6>] kthread+0x96/0xa0
[<ffffffff8100c69a>] child_rip+0xa/0x20
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff880133c580e8 (size 8):
comm "khubd", pid 218, jiffies 4294893605
hex dump (first 8 bytes):
31 2d 36 3a 31 2e 30 00 1-6:1.0.
backtrace:
[<ffffffff814a3115>] kmemleak_alloc+0x25/0x60
[<ffffffff810f36ab>] __kmalloc_track_caller+0x10b/0x200
[<ffffffff810d4480>] kstrdup+0x40/0x70
[<ffffffff8115ebdc>] sysfs_new_dirent+0x10c/0x120
[<ffffffff8115f9fd>] create_dir+0x3d/0xb0
[<ffffffff8115faa4>] sysfs_create_dir+0x34/0x50
[<ffffffff8121ea37>] kobject_add_internal+0xb7/0x200
[<ffffffff8121eca8>] kobject_add_varg+0x38/0x60
[<ffffffff8121ed84>] kobject_add+0x44/0x70
[<ffffffff812f8408>] device_add+0x118/0x5d0
[<ffffffff81351054>] usb_set_configuration+0x444/0x740
[<ffffffff8135aba2>] generic_probe+0x32/0xb0
[<ffffffff81351425>] usb_probe_device+0x25/0x30
[<ffffffff812faec6>] driver_probe_device+0x86/0x180
[<ffffffff812fb0ab>] __device_attach+0x4b/0x50
[<ffffffff812fa048>] bus_for_each_drv+0x68/0x90
unreferenced object 0xffff880133cf2b40 (size 80):
comm "khubd", pid 218, jiffies 4294893605
hex dump (first 32 bytes):
01 00 00 00 00 00 00 80 c0 53 c6 33 01 88 ff ff .........S.3....
00 00 00 00 00 00 00 00 e8 80 c5 33 01 88 ff ff ...........3....
backtrace:
[<ffffffff814a3115>] kmemleak_alloc+0x25/0x60
[<ffffffff810f2aeb>] kmem_cache_alloc+0xfb/0x180
[<ffffffff8115eb0c>] sysfs_new_dirent+0x3c/0x120
[<ffffffff8115f9fd>] create_dir+0x3d/0xb0
[<ffffffff8115faa4>] sysfs_create_dir+0x34/0x50
[<ffffffff8121ea37>] kobject_add_internal+0xb7/0x200
[<ffffffff8121eca8>] kobject_add_varg+0x38/0x60
[<ffffffff8121ed84>] kobject_add+0x44/0x70
[<ffffffff812f8408>] device_add+0x118/0x5d0
[<ffffffff81351054>] usb_set_configuration+0x444/0x740
[<ffffffff8135aba2>] generic_probe+0x32/0xb0
[<ffffffff81351425>] usb_probe_device+0x25/0x30
[<ffffffff812faec6>] driver_probe_device+0x86/0x180
[<ffffffff812fb0ab>] __device_attach+0x4b/0x50
[<ffffffff812fa048>] bus_for_each_drv+0x68/0x90
[<ffffffff812fb166>] device_attach+0x86/0x90
===================================================================
dump:
==================================================================
[ 604.393175] kmemleak: Object 0xffff880133c580a0 (size 8):
[ 604.393179] kmemleak: comm "khubd", pid 218, jiffies 4294893605
[ 604.393180] kmemleak: min_count = 1
[ 604.393182] kmemleak: count = 0
[ 604.393183] kmemleak: flags = 0x3
[ 604.393184] kmemleak: backtrace:
[ 604.393186] [<ffffffff814a3115>] kmemleak_alloc+0x25/0x60
[ 604.393193] [<ffffffff810f36ab>] __kmalloc_track_caller+0x10b/0x200
[ 604.393198] [<ffffffff810d4480>] kstrdup+0x40/0x70
[ 604.393201] [<ffffffff8115ebdc>] sysfs_new_dirent+0x10c/0x120
[ 604.393206] [<ffffffff8115f9fd>] create_dir+0x3d/0xb0
[ 604.393209] [<ffffffff8115faa4>] sysfs_create_dir+0x34/0x50
[ 604.393212] [<ffffffff8121ea37>] kobject_add_internal+0xb7/0x200
[ 604.393217] [<ffffffff8121eca8>] kobject_add_varg+0x38/0x60
[ 604.393220] [<ffffffff8121ed84>] kobject_add+0x44/0x70
[ 604.393223] [<ffffffff812f8408>] device_add+0x118/0x5d0
[ 604.393227] [<ffffffff8134914d>] usb_new_device+0x6d/0xe0
[ 604.393232] [<ffffffff8134adf8>] hub_thread+0x878/0x1280
[ 604.393235] [<ffffffff810644f6>] kthread+0x96/0xa0
[ 604.393240] [<ffffffff8100c69a>] child_rip+0xa/0x20
[ 604.393243] [<ffffffffffffffff>] 0xffffffffffffffff
===========================================================================
gdb:
==========================================================
(gdb) l *(sysfs_new_dirent+0x10c)
0xffffffff8115ebdc is in sysfs_new_dirent (fs/sysfs/dir.c:315).
310 {
311 char *dup_name = NULL;
312 struct sysfs_dirent *sd;
313
314 if (type & SYSFS_COPY_NAME) {
315 name = dup_name = kstrdup(name, GFP_KERNEL);
316 if (!name)
317 return NULL;
318 }
319
=======================================================
prev parent reply other threads:[~2009-07-18 20:29 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-14 6:08 60 memory leaks.. or is it some thing wrong with kmemleak? Alexey Fisher
2009-07-14 7:19 ` Pekka Enberg
2009-07-14 8:28 ` Alexey Fisher
2009-07-14 9:39 ` Catalin Marinas
2009-07-14 9:52 ` [PATCH] x86: _edata should include all .data.* sections on X86_64 Catalin Marinas
2009-07-14 10:13 ` Alexey Fisher
2009-07-14 10:31 ` Catalin Marinas
2009-07-14 10:37 ` Alexey Fisher
2009-07-14 12:26 ` ext4 memory leak (was Re: [PATCH] x86: _edata should include all .data.* sections on X86_64) Catalin Marinas
2009-07-15 8:03 ` Aneesh Kumar K.V
2009-07-15 8:54 ` Alexey Fisher
2009-07-18 11:55 ` Ingo Molnar
2009-07-18 13:30 ` Alexey Fisher
2009-07-18 22:44 ` Catalin Marinas
2009-07-18 22:33 ` Catalin Marinas
2009-07-15 10:33 ` Catalin Marinas
2009-07-14 12:42 ` [PATCH] x86: _edata should include all .data.* sections on X86_64 Catalin Marinas
2009-07-16 20:23 ` Sam Ravnborg
2009-07-18 12:06 ` [tip:x86/urgent] x86: Include all of .data.* sections in _edata on 64-bit tip-bot for Catalin Marinas
2009-07-18 20:29 ` Alexey Fisher [this message]
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