lkml.org 
[lkml]   [2007]   [Aug]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 2.6.23-rc2-mm1: sleeping function called from invalid context at kernel/mutex.c:86

* Andrew Morton <akpm@linux-foundation.org> wrote:

> We seem to have made a mess in there. timer_list_show() ends up
> calling lookup_module_symbol_name(), which takes a mutex. However
> print_symbol() (which is called at oops time, interrupt time, etc)
> calls module_address_lookup(), which is basically the same, only it
> doesn't take the mutex.

hm, current upstream does:

static void print_name_offset(struct seq_file *m, void *sym)
{
char symname[KSYM_NAME_LEN];

if (lookup_symbol_name((unsigned long)sym, symname) < 0)

why was that changed? I think symbol lookups for debug purposes have to
be lockless, fundamentally.

Ingo
-
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/

\
 
 \ /
  Last update: 2007-08-10 09:43    [W:0.060 / U:0.136 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site