linux-stable/arch
Markus Metzger 9f339e7028 x86, ptrace, mm: fix double-free on race
Ptrace_detach() races with __ptrace_unlink() if the traced task is
reaped while detaching. This might cause a double-free of the BTS
buffer.

Change the ptrace_detach() path to only do the memory accounting in
ptrace_bts_detach() and leave the buffer free to ptrace_bts_untrace()
which will be called from __ptrace_unlink().

The fix follows a proposal from Oleg Nesterov.

Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-11 15:44:20 +01:00
..
alpha alpha: fix the BUG() macro 2009-01-29 18:04:44 -08:00
arm mmc: Add a MX2/MX3 specific SDHC driver 2009-02-02 20:57:05 +01:00
avr32
blackfin
cris
frv
h8300
ia64 Documentation: move DMA-mapping.txt to Doc/PCI/ 2009-01-29 18:19:29 -08:00
m32r
m68k
m68knommu
mips MIPS: Alchemy: time.c build fix 2009-01-30 21:33:01 +00:00
mn10300
parisc Documentation: move DMA-mapping.txt to Doc/PCI/ 2009-01-29 18:19:29 -08:00
powerpc powerpc: Fix oops on some machines due to incorrect pr_debug() 2009-02-02 17:08:25 +11:00
s390
sh
sparc
um
x86 x86, ptrace, mm: fix double-free on race 2009-02-11 15:44:20 +01:00
xtensa
.gitignore
Kconfig