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(parent: 54a0151) | patch
asmlinkage_protect sys_io_getevents
authorRoland McGrath <roland@redhat.com>
Thu, 10 Apr 2008 22:38:45 +0000 (15:38 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 11 Apr 2008 00:28:26 +0000 (17:28 -0700)
commit598af051a79d05b751fe793f1fe09fcf74763e02
treec9adafd96ee316c3d05f2978697d3624547f9e84tree | snapshot
parent54a015104136974262afa4b8ddd943ea70dec8a2commit | diff
asmlinkage_protect sys_io_getevents

Use asmlinkage_protect in sys_io_getevents, because GCC for i386 with
CONFIG_FRAME_POINTER=n can decide to clobber an argument word on the
stack, i.e. the user struct pt_regs.  Here the problem is not a tail
call, but just the compiler's use of the stack when it inlines and
optimizes the body of the called function.  This seems to avoid it.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/aio.c diff | blob | history
Domain: System / Uncategorized;