On martedì 11 settembre 2007, Christopher S. Aker wrote: > Jeff Dike wrote: > > On Thu, Sep 06, 2007 at 11:03:52AM -0400, Christopher S. Aker wrote: > >> 2.6.22.6-um > >> > >> init_new_context_skas - new_mm failed, errno = -24 > >> init_new_context_skas - new_mm failed, errno = -24 > >> init_new_context_skas - new_mm failed, errno = -24 > >> Kernel panic - not syncing: switch_mm_skas - PTRACE_SWITCH_MM failed, > >> errno = 9 > >> > >> Is this cause by a still-too-low max_map_count value? > > > > Could be - what was the host's max_map_count? > > > > Jeff
errno = 24 means EMFILE (too many open files).
And I read, in mm/mmap.c: do_mmap_pgoff():
/* Too many mappings? */
if (mm->map_count > sysctl_max_map_count)
return -ENOMEM;
While open_proc_mm only returns 0 or -ENOMEM.
So I'm 99% sure that you have indeed too many open files. There is a
differnence between EMFILE and ENFILE - I vaguely remember that the 2nd is
about ulimit while the first is about the total number of fd's. (man proc
should says how to increase it - it is under /proc/sys).
> [EMAIL PROTECTED]:~# cat /proc/sys/vm/max_map_count
> 500000
> [EMAIL PROTECTED]:~# free -g
> total used free shared buffers cached
> Mem: 23 8 15 0 0 7
> -/+ buffers/cache: 0 23
> Swap: 1 0 1
Btw, note this:
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--
"Doh!" (cit.), I've made another mistake!
Paolo Giarrusso, aka Blaisorblade
Linux registered user n. 292729
http://www.user-mode-linux.org/~blaisorblade
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