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author | 2016-05-23 16:25:36 -0700 | |
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committer | 2016-05-23 17:04:14 -0700 | |
commit | 864778b154233d3a673c520aa9606777589ecee7 (patch) | |
tree | 422b045224098ec95b23b1da8a441e25ee52288e /Documentation | |
parent | mm: make vm_munmap killable (diff) | |
download | linux-864778b154233d3a673c520aa9606777589ecee7.tar.gz linux-864778b154233d3a673c520aa9606777589ecee7.tar.bz2 linux-864778b154233d3a673c520aa9606777589ecee7.zip |
mm, aout: handle vm_brk failures
vm_brk is allowed to fail but load_aout_binary simply ignores the error
and happily continues. I haven't noticed any problem from that in real
life but later patches will make the failure more likely because vm_brk
will become killable (resp. mmap_sem for write waiting will become
killable) so we should be more careful now.
The error handling should be quite straightforward because there are
calls to vm_mmap which check the error properly already. The only
notable exception is set_brk which is called after beyond_if label. But
nothing indicates that we cannot move it above set_binfmt as the two do
not depend on each other and fail before we do set_binfmt and alter
reference counting.
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions