Messages in this thread | | | Date | Tue, 11 Jul 2006 18:02:59 +0200 | From | "Michal Piotrowski" <> | Subject | Re: [PATCH 00/10] Kernel memory leak detector 0.8 |
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On 11/07/06, Catalin Marinas <catalin.marinas@gmail.com> wrote: > > orphan pointer 0xc6113bec (size 28): > > c017392a: <__kmalloc_track_caller> > > c01631b1: <__kzalloc> > > c010b7d7: <legacy_init_iomem_resources> > > c010b89c: <request_standard_resources> > > c0100b8b: <do_initcalls> > > c0100c3d: <do_basic_setup> > > c0100cdb: <init> > > That's a real leak. I posted a patch last night that solves this issue > - http://lkml.org/lkml/2006/7/10/370
Thanks.
> > > This is most common > > orphan pointer 0xf5a6fd60 (size 39): > > c0173822: <__kmalloc> > > c01df500: <context_struct_to_string> > > c01df679: <security_sid_to_context> > > c01d7eee: <selinux_socket_getpeersec_dgram> > > f884f019: <unix_get_peersec_dgram> > > f8850698: <unix_dgram_sendmsg> > > c02a88c2: <sock_sendmsg> > > c02a9c7a: <sys_sendto> > > Looking at the call trace, the pointer to the memory allocated in > context_struct_to_string() is stored in the "cb" variable in struct > sk_buff (argument passed to selinux_socket_getpeersec_dgram from > unix_get_peersec_dgram). > > This pointer should be found when scanning the "struct sk_buff" > blocks, unless you also get a comparable number of "struct sk_buff" > reports (from __alloc_skb). If not, it might be a real leak.
So if we got 3970 orphan pointer 0xf5a6fd60 (size 39): c0173822: <__kmalloc> c01df500: <context_struct_to_string> c01df679: <security_sid_to_context> c01d7eee: <selinux_socket_getpeersec_dgram> f884f019: <unix_get_peersec_dgram> f8850698: <unix_dgram_sendmsg> c02a88c2: <sock_sendmsg> c02a9c7a: <sys_sendto>
and 4673 orphan pointer 0xf4249488 (size 29): c0173822: <__kmalloc> c01df500: <context_struct_to_string> c01df679: <security_sid_to_context> c01d7eee: <selinux_socket_getpeersec_dgram> f884f019: <unix_get_peersec_dgram> f8850698: <unix_dgram_sendmsg> c02a8d68: <do_sock_write> c02a8e85: <sock_aio_write>
It's not a memleak?
http://www.stardust.webpages.pl/files/o_bugs/kml/ml3.txt
> > -- > Catalin >
Regards, Michal
-- Michal K. K. Piotrowski LTG - Linux Testers Group (http://www.stardust.webpages.pl/ltg/wiki/) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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