Memory leaks in Samsung's kernel

[Michał Nykiel]

Well, I'm not sure. But after further analyse, I think that crypto creates
some data on boot which are destroyed only when device is powering off, so
it may be false positive.


2013/5/30 Matthias Brugger <matthias.bgg at gmail.com>

>
> El 28/05/2013 19:16, "Michał Akaanonim" <michak.ny at gmail.com> va escriure:
>
> >
> > Hi,
> > I'm developing custom kernel for my Samsung Galaxy Ace 2 phone.
> > First, I'd like to check if there are any bugs, so I built kernel with
> kmemleak enabled and I get 10 entries, for example:
> >
> > unreferenced object 0xce2a2000 (size 8192):
> >   comm "vold", pid 1855, jiffies 4294942835 (age 1394.240s)
> >   hex dump (first 32 bytes):
> >     00 00 00 00 24 7e 50 c0 d0 7d 50 c0 7c 7d 50 c0  ....$~P..}P.|}P.
> >     00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
> >   backtrace:
> >     [<c03f4a00>] create_object+0x10c/0x24c
> >     [<c08e99f0>] kmemleak_alloc+0x6c/0xd0
> >     [<c03f1a54>] __kmalloc+0x178/0x27c
> >     [<c0507988>] __crypto_alloc_tfm+0x4c/0x140
> >     [<c05086b8>] crypto_spawn_tfm+0x78/0xcc
> >     [<c0511dc0>] crypto_cbc_init_tfm+0x2c/0x44
> >     [<c05079dc>] __crypto_alloc_tfm+0xa0/0x140
> >     [<c05086b8>] crypto_spawn_tfm+0x78/0xcc
> >     [<c050b968>] skcipher_geniv_init+0x2c/0x54
> >     [<c050cd68>] eseqiv_init+0x50/0x54
> >     [<c05079dc>] __crypto_alloc_tfm+0xa0/0x140
> >     [<c050aee0>] crypto_alloc_ablkcipher+0x68/0xa8
> >     [<c06b82b0>] crypt_ctr+0x294/0x8a0
> >     [<c06b08c8>] dm_table_add_target+0xf8/0x260
> >     [<c06b3ffc>] table_load+0x114/0x2c4
> >     [<c06b37d4>] dm_ctl_ioctl+0x1d0/0x2cc
> >
> > I noticed that in 6 of 10 entries there are dm_ctl_ioctl, table_load and
> dm_table_add_target functions. So I think something is wrong with MD driver
> but I compared source of this driver with other find on net and there
> aren't any differences.
> > Source code of my kernel can be found here:
> https://github.com/hckk/GT-I8160_Kernel
> >
> > Thanks for any help.
>
> Could it be false positives?
>
> Regards,
> Matthias
>
> > Greetings, Michal.
> >
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> >
>
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