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Date: Thu, 27 Aug 2009 22:25:57 -0700
From: "Luis R. Rodriguez" <mcgrof@...il.com>
To: linux-kernel@...r.kernel.org
Subject: memleaks, acpi + ext4 + tty
I have an assorted collection of kmemleak reports for acpi, ext4 and
tty, not sure how to read these yet to fix so figure I'd at least post
them. To reproduce I can just dd=/dev/zero to some big file and played
some video.
unreferenced object 0xffff88003e0015c0 (size 64):
comm "swapper", pid 1, jiffies 4294892352
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81118a03>] kmem_cache_alloc_node+0x193/0x200
[<ffffffff8152509e>] process_zones+0x70/0x1cd
[<ffffffff81525230>] pageset_cpuup_callback+0x35/0x92
[<ffffffff8152c9b7>] notifier_call_chain+0x47/0x90
[<ffffffff81078549>] __raw_notifier_call_chain+0x9/0x10
[<ffffffff81523f25>] _cpu_up+0x75/0x130
[<ffffffff8152403a>] cpu_up+0x5a/0x6a
[<ffffffff8181969e>] kernel_init+0xcc/0x1ba
[<ffffffff810130ca>] child_rip+0xa/0x20
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff88003cb5f700 (size 64):
comm "swapper", pid 1, jiffies 4294892459
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff812bb549>] kzalloc+0xf/0x11
[<ffffffff812bbb53>] acpi_add_single_object+0x58e/0xd3c
[<ffffffff812bc51c>] acpi_bus_scan+0x125/0x1af
[<ffffffff81842361>] acpi_scan_init+0xc8/0xe9
[<ffffffff8184211c>] acpi_init+0x21f/0x265
[<ffffffff8100a05b>] do_one_initcall+0x4b/0x1b0
[<ffffffff81819736>] kernel_init+0x164/0x1ba
[<ffffffff810130ca>] child_rip+0xa/0x20
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff88003cb5f740 (size 64):
comm "swapper", pid 1, jiffies 4294892460
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff812bb549>] kzalloc+0xf/0x11
[<ffffffff812bbb53>] acpi_add_single_object+0x58e/0xd3c
[<ffffffff812bc51c>] acpi_bus_scan+0x125/0x1af
[<ffffffff81842361>] acpi_scan_init+0xc8/0xe9
[<ffffffff8184211c>] acpi_init+0x21f/0x265
[<ffffffff8100a05b>] do_one_initcall+0x4b/0x1b0
[<ffffffff81819736>] kernel_init+0x164/0x1ba
[<ffffffff810130ca>] child_rip+0xa/0x20
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff88003cb5f780 (size 64):
comm "swapper", pid 1, jiffies 4294892463
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff812bb549>] kzalloc+0xf/0x11
[<ffffffff812bbb53>] acpi_add_single_object+0x58e/0xd3c
[<ffffffff812bc51c>] acpi_bus_scan+0x125/0x1af
[<ffffffff81842361>] acpi_scan_init+0xc8/0xe9
[<ffffffff8184211c>] acpi_init+0x21f/0x265
[<ffffffff8100a05b>] do_one_initcall+0x4b/0x1b0
[<ffffffff81819736>] kernel_init+0x164/0x1ba
[<ffffffff810130ca>] child_rip+0xa/0x20
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff88003cb5f7c0 (size 64):
comm "swapper", pid 1, jiffies 4294892465
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff812bb549>] kzalloc+0xf/0x11
[<ffffffff812bbb53>] acpi_add_single_object+0x58e/0xd3c
[<ffffffff812bc51c>] acpi_bus_scan+0x125/0x1af
[<ffffffff81842361>] acpi_scan_init+0xc8/0xe9
[<ffffffff8184211c>] acpi_init+0x21f/0x265
[<ffffffff8100a05b>] do_one_initcall+0x4b/0x1b0
[<ffffffff81819736>] kernel_init+0x164/0x1ba
[<ffffffff810130ca>] child_rip+0xa/0x20
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff88002e93da80 (size 192):
comm "swapper", pid 1, jiffies 4294892831
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff812e0f82>] acpi_processor_register_performance+0x2ad/0x3eb
[<ffffffff8102438d>] acpi_cpufreq_cpu_init+0xad/0x520
[<ffffffff81425b25>] cpufreq_add_dev+0x175/0x720
[<ffffffff81325fd6>] sysdev_driver_register+0xa6/0x130
[<ffffffff81424b10>] cpufreq_register_driver+0x80/0x170
[<ffffffff81823596>] acpi_cpufreq_init+0x92/0xc9
[<ffffffff8100a05b>] do_one_initcall+0x4b/0x1b0
[<ffffffff81819736>] kernel_init+0x164/0x1ba
[<ffffffff810130ca>] child_rip+0xa/0x20
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff88002e93df00 (size 192):
comm "swapper", pid 1, jiffies 4294892832
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff812e0f82>] acpi_processor_register_performance+0x2ad/0x3eb
[<ffffffff8102438d>] acpi_cpufreq_cpu_init+0xad/0x520
[<ffffffff81425b25>] cpufreq_add_dev+0x175/0x720
[<ffffffff81325fd6>] sysdev_driver_register+0xa6/0x130
[<ffffffff81424b10>] cpufreq_register_driver+0x80/0x170
[<ffffffff81823596>] acpi_cpufreq_init+0x92/0xc9
[<ffffffff8100a05b>] do_one_initcall+0x4b/0x1b0
[<ffffffff81819736>] kernel_init+0x164/0x1ba
[<ffffffff810130ca>] child_rip+0xa/0x20
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff880039571800 (size 1024):
comm "exe", pid 1168, jiffies 4294893410
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff811e1d71>] ext4_mb_init+0x1a1/0x590
[<ffffffff811d2da3>] ext4_fill_super+0x1df3/0x26c0
[<ffffffff8112774f>] get_sb_bdev+0x16f/0x1b0
[<ffffffff811c8fd3>] ext4_get_sb+0x13/0x20
[<ffffffff81127216>] vfs_kern_mount+0x76/0x180
[<ffffffff8112738d>] do_kern_mount+0x4d/0x130
[<ffffffff8113fc57>] do_mount+0x307/0x8b0
[<ffffffff8114028f>] sys_mount+0x8f/0xe0
[<ffffffff81011f02>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff880039571400 (size 1024):
comm "exe", pid 1168, jiffies 4294893410
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff811e1d71>] ext4_mb_init+0x1a1/0x590
[<ffffffff811d2da3>] ext4_fill_super+0x1df3/0x26c0
[<ffffffff8112774f>] get_sb_bdev+0x16f/0x1b0
[<ffffffff811c8fd3>] ext4_get_sb+0x13/0x20
[<ffffffff81127216>] vfs_kern_mount+0x76/0x180
[<ffffffff8112738d>] do_kern_mount+0x4d/0x130
[<ffffffff8113fc57>] do_mount+0x307/0x8b0
[<ffffffff8114028f>] sys_mount+0x8f/0xe0
[<ffffffff81011f02>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff880039570800 (size 1024):
comm "exe", pid 1168, jiffies 4294893410
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff811e1d71>] ext4_mb_init+0x1a1/0x590
[<ffffffff811d2da3>] ext4_fill_super+0x1df3/0x26c0
[<ffffffff8112774f>] get_sb_bdev+0x16f/0x1b0
[<ffffffff811c8fd3>] ext4_get_sb+0x13/0x20
[<ffffffff81127216>] vfs_kern_mount+0x76/0x180
[<ffffffff8112738d>] do_kern_mount+0x4d/0x130
[<ffffffff8113fc57>] do_mount+0x307/0x8b0
[<ffffffff8114028f>] sys_mount+0x8f/0xe0
[<ffffffff81011f02>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff880039572000 (size 1024):
comm "exe", pid 1168, jiffies 4294893410
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff811e1d71>] ext4_mb_init+0x1a1/0x590
[<ffffffff811d2da3>] ext4_fill_super+0x1df3/0x26c0
[<ffffffff8112774f>] get_sb_bdev+0x16f/0x1b0
[<ffffffff811c8fd3>] ext4_get_sb+0x13/0x20
[<ffffffff81127216>] vfs_kern_mount+0x76/0x180
[<ffffffff8112738d>] do_kern_mount+0x4d/0x130
[<ffffffff8113fc57>] do_mount+0x307/0x8b0
[<ffffffff8114028f>] sys_mount+0x8f/0xe0
[<ffffffff81011f02>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff880039573c00 (size 1024):
comm "exe", pid 1168, jiffies 4294893410
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff811e1d71>] ext4_mb_init+0x1a1/0x590
[<ffffffff811d2da3>] ext4_fill_super+0x1df3/0x26c0
[<ffffffff8112774f>] get_sb_bdev+0x16f/0x1b0
[<ffffffff811c8fd3>] ext4_get_sb+0x13/0x20
[<ffffffff81127216>] vfs_kern_mount+0x76/0x180
[<ffffffff8112738d>] do_kern_mount+0x4d/0x130
[<ffffffff8113fc57>] do_mount+0x307/0x8b0
[<ffffffff8114028f>] sys_mount+0x8f/0xe0
[<ffffffff81011f02>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff880039572800 (size 1024):
comm "exe", pid 1168, jiffies 4294893410
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff811e1d71>] ext4_mb_init+0x1a1/0x590
[<ffffffff811d2da3>] ext4_fill_super+0x1df3/0x26c0
[<ffffffff8112774f>] get_sb_bdev+0x16f/0x1b0
[<ffffffff811c8fd3>] ext4_get_sb+0x13/0x20
[<ffffffff81127216>] vfs_kern_mount+0x76/0x180
[<ffffffff8112738d>] do_kern_mount+0x4d/0x130
[<ffffffff8113fc57>] do_mount+0x307/0x8b0
[<ffffffff8114028f>] sys_mount+0x8f/0xe0
[<ffffffff81011f02>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff880006ce0400 (size 1024):
comm "mplayer", pid 5293, jiffies 4295366945
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff813021b0>] tty_buffer_request_room+0xc0/0x190
[<ffffffff8130244c>] tty_insert_flip_string+0x3c/0xb0
[<ffffffff81302f49>] pty_write+0x49/0x70
[<ffffffff812fd3b0>] n_tty_write+0x1c0/0x450
[<ffffffff812f9ec1>] tty_write+0x1a1/0x290
[<ffffffff81124518>] vfs_write+0xb8/0x1a0
[<ffffffff81124fcc>] sys_write+0x4c/0x80
[<ffffffff81011f02>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff880006ce1800 (size 1024):
comm "mplayer", pid 5293, jiffies 4295366970
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff813021b0>] tty_buffer_request_room+0xc0/0x190
[<ffffffff8130244c>] tty_insert_flip_string+0x3c/0xb0
[<ffffffff81302f49>] pty_write+0x49/0x70
[<ffffffff812fd3b0>] n_tty_write+0x1c0/0x450
[<ffffffff812f9ec1>] tty_write+0x1a1/0x290
[<ffffffff81124518>] vfs_write+0xb8/0x1a0
[<ffffffff81124fcc>] sys_write+0x4c/0x80
[<ffffffff81011f02>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff880006ce1400 (size 1024):
comm "mplayer", pid 5293, jiffies 4295367045
backtrace:
[<ffffffff81121fad>] create_object+0x13d/0x2d0
[<ffffffff81122265>] kmemleak_alloc+0x25/0x60
[<ffffffff81119f3b>] __kmalloc+0x16b/0x250
[<ffffffff813021b0>] tty_buffer_request_room+0xc0/0x190
[<ffffffff8130244c>] tty_insert_flip_string+0x3c/0xb0
[<ffffffff81302f49>] pty_write+0x49/0x70
[<ffffffff812fd3b0>] n_tty_write+0x1c0/0x450
[<ffffffff812f9ec1>] tty_write+0x1a1/0x290
[<ffffffff81124518>] vfs_write+0xb8/0x1a0
[<ffffffff81124fcc>] sys_write+0x4c/0x80
[<ffffffff81011f02>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
--
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