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Jim Keniston 8bf1101bd5 [PATCH] kprobes: Fix return probes on sys_execve ... Fix a bug in kprobes that can cause an Oops or even a crash when a return probe is installed on one of the following functions: sys_execve, do_execve, load_*_binary, flush_old_exec, or flush_thread. The fix is to remove the call to kprobe_flush_task() in flush_thread(). This fix has been tested on all architectures for which the return-probes feature has been implemented (i386, x86_64, ppc64, ia64). Please apply. BACKGROUND Up to now, we have called kprobe_flush_task() under two situations: when a task exits, and when it execs. Flushing kretprobe_instances on exit is correct because (a) do_exit() doesn't return, and (b) one or more return-probed functions may be active when a task calls do_exit(). Neither is the case for sys_execve() and its callees. Initially, the mistaken call to kprobe_flush_task() on exec was harmless because we put the "real" return address of each active probed function back in the stack, just to be safe, when we recycled its kretprobe_instance. When support for ppc64 and ia64 was added, this safety measure couldn't be employed, and was eventually dropped even for i386 and x86_64. sys_execve() and its callees were informally blacklisted for return probes until this fix was developed. Acked-by: Prasanna S Panchamukhi <prasanna@in.ibm.com> Signed-off-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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acpi	[PATCH] x86-64: more gratitious linux/irq.h includes	20 years ago
cpufreq	…
Makefile	[PATCH] x86_64: Support for AMD specific MCE Threshold.	19 years ago
aperture.c	[PATCH] x86_64: Fix gcc 4 warning in aperture.c	19 years ago
apic.c	[PATCH] x86_64: Support for AMD specific MCE Threshold.	19 years ago
asm-offsets.c	[PATCH] x86-64: Some cleanup and optimization to the processor data area.	20 years ago
crash.c	…
e820.c	[PATCH] x86_64: Only use asm/sections.h to declare section symbols	19 years ago
early_printk.c	[PATCH] x86-64: Add simnow console	20 years ago
entry.S	[PATCH] x86_64: Support for AMD specific MCE Threshold.	19 years ago
genapic.c	…
genapic_cluster.c	…
genapic_flat.c	…
head.S	[PATCH] x86_64: Unmap NULL during early bootup	19 years ago
head64.c	[PATCH] x86_64: Only use asm/sections.h to declare section symbols	19 years ago
i387.c	…
i8259.c	Merge x86-64 update from Andi	19 years ago
init_task.c	…
io_apic.c	[PATCH] i386/x86-64: Share interrupt vectors when there is a large number of interrupt sources	19 years ago
ioport.c	…
irq.c	…
kprobes.c	[PATCH] Kprobes: preempt_disable/enable() simplification	20 years ago
ldt.c	…
machine_kexec.c	…
mce.c	[PATCH] x86_64: Log machine checks from boot on Intel systems	19 years ago
mce_amd.c	[PATCH] x86_64: Support for AMD specific MCE Threshold.	19 years ago
mce_intel.c	…
module.c	[PATCH] uml: kludgy compilation fixes for x86-64 subarch modules support	20 years ago
mpparse.c	[PATCH] x86_64: Increase the maximum number of local APICs to the maximum	19 years ago
nmi.c	…
pci-dma.c	…
pci-gart.c	[PATCH] x86_64: Use the DMA32 zone for dma_alloc_coherent()/pci_alloc_consistent	19 years ago
pci-nommu.c	…
pmtimer.c	…
process.c	[PATCH] kprobes: Fix return probes on sys_execve	19 years ago
ptrace.c	[PATCH] consolidate sys_ptrace()	20 years ago
reboot.c	[PATCH] x86_64: Reduce number of retries for reset through keyboard controller	19 years ago
relocate_kernel.S	[PATCH] kexec: x86_64 kexec implementation	20 years ago
setup.c	[PATCH] x86_64: Fix sparse mem	19 years ago
setup64.c	[PATCH] x86_64: Unmap NULL during early bootup	19 years ago
signal.c	[PATCH] x86_64: Save/restore CS in 64bit signal handlers and force __USER_CS for CS	19 years ago
smp.c	[PATCH] x86_64: Don't enable interrupt unconditionally in reboot path	19 years ago
smpboot.c	Merge x86-64 update from Andi	19 years ago
suspend.c	…
suspend_asm.S	…
sys_x86_64.c	[PATCH] x86_64: Use common sys_time64	19 years ago
syscall.c	Linux-2.6.12-rc2	20 years ago
time.c	…
trampoline.S	…
traps.c	[PATCH] x86_64: Remove CONFIG_CHECKING and add command line option for pagefault tracing	19 years ago
vmlinux.lds.S	[PATCH] x86_64: Only use asm/sections.h to declare section symbols	19 years ago
vsyscall.c	…
x8664_ksyms.c	[PATCH] x86_64: Allow modular build of ia32 aout loader	19 years ago