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9f339e7028
linux/arch/x86
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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
..
boot x86 setup: fix asm constraints in vesa_store_edid 2009-01-30 23:55:25 +01:00
configs eeprom: More consistent symbol names 2009-01-26 21:19:57 +01:00
crypto crypto: crc32c-intel - Switch to shash 2008-12-25 11:01:37 +11:00
ia32 x86: introducing asm/sys_ia32.h 2008-12-29 13:18:40 +01:00
include/asm x86: fix math_emu register frame access 2009-02-10 00:39:14 +01:00
kernel x86, ptrace, mm: fix double-free on race 2009-02-11 15:44:20 +01:00
kvm KVM: change KVM to use IOMMU API 2009-01-03 14:11:07 +01:00
lguest lguest: typos fix 2009-01-30 11:34:10 +10:30
lib x86: use early clobbers in usercopy*.c 2009-01-21 09:43:17 +01:00
mach-default x86/Voyager: make it build and boot 2009-01-31 18:26:07 +01:00
mach-generic x86: rename all fields of mpc_table mpc_X to X 2009-01-05 14:08:34 +01:00
mach-rdc321x removed unused #include <linux/version.h>'s 2008-08-23 12:14:12 -07:00
mach-voyager x86/Voyager: make it build and boot 2009-01-31 18:26:07 +01:00
math-emu x86: fix math_emu register frame access 2009-02-10 00:39:14 +01:00
mm Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-01-26 09:47:28 -08:00
oprofile Merge branch 'oprofile/ring_buffer' into oprofile/oprofile-for-tip 2009-01-08 14:27:34 +01:00
pci PCI: irq and pci_ids patch for Intel Tigerpoint DeviceIDs 2009-01-27 09:46:08 -08:00
power x86, hibernate: fix breakage on x86_32 with CONFIG_NUMA set 2008-11-12 23:28:51 +01:00
vdso Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6 2008-12-28 12:33:21 -08:00
video
xen xen: disable interrupts before saving in percpu 2009-02-03 17:22:40 -08:00
Kconfig x86: disable intel_iommu support by default 2009-02-05 16:48:38 +01:00
Kconfig.cpu x86/Kconfig.cpu: make Kconfig help readable in the console 2009-02-04 22:19:27 +01:00
Kconfig.debug Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2008-12-28 12:21:10 -08:00
Makefile x86, um: ... and asm-x86 move 2008-10-22 22:55:20 -07:00
Makefile_32.cpu x86: merge winchip-2 and winchip-2a cpu choices 2008-10-13 10:22:48 +02:00