linux/kernel/kprobes.c, branch v2.6.19

[PATCH] kretprobe spinlock deadlock patch

2006-10-02T14:57:16Z

kprobe_flush_task() possibly calls kfree function during holding kretprobe_lock spinlock, if kfree function is probed by kretprobe that will incur spinlock deadlock. This patch moves kfree function out scope of kretprobe_lock. Signed-off-by: bibo, mao Signed-off-by: Ananth N Mavinakayanahalli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] kprobe whitespace cleanup

2006-10-02T14:57:16Z

Whitespace is used to indent, this patch cleans up these sentences by kernel coding style. Signed-off-by: bibo, mao Signed-off-by: Ananth N Mavinakayanahalli Cc: "Luck, Tony" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] Kprobes: Make kprobe modules more portable

2006-10-02T14:57:16Z

In an effort to make kprobe modules more portable, here is a patch that: o Introduces the "symbol_name" field to struct kprobe. The symbol->address resolution now happens in the kernel in an architecture agnostic manner. 64-bit powerpc users no longer have to specify the ".symbols" o Introduces the "offset" field to struct kprobe to allow a user to specify an offset into a symbol. o The legacy mechanism of specifying the kprobe.addr is still supported. However, if both the kprobe.addr and kprobe.symbol_name are specified, probe registration fails with an -EINVAL. o The symbol resolution code uses kallsyms_lookup_name(). So CONFIG_KPROBES now depends on CONFIG_KALLSYMS o Apparantly kprobe modules were the only legitimate out-of-tree user of the kallsyms_lookup_name() EXPORT. Now that the symbol resolution happens in-kernel, remove the EXPORT as suggested by Christoph Hellwig o Modify tcp_probe.c that uses the kprobe interface so as to make it work on multiple platforms (in its earlier form, the code wouldn't work, say, on powerpc) Signed-off-by: Ananth N Mavinakayanahalli Signed-off-by: Prasanna S Panchamukhi Signed-off-by: Christoph Hellwig Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] IA64: kprobe invalidate icache of jump buffer

2006-07-31T20:28:38Z

Kprobe inserts breakpoint instruction in probepoint and then jumps to instruction slot when breakpoint is hit, the instruction slot icache must be consistent with dcache. Here is the patch which invalidates instruction slot icache area. Without this patch, in some machines there will be fault when executing instruction slot where icache content is inconsistent with dcache. Signed-off-by: bibo,mao Acked-by: "Luck, Tony" Acked-by: Keshavamurthy Anil S Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] Notify page fault call chain

2006-06-26T16:58:22Z

With this patch Kprobes now registers for page fault notifications only when their is an active probe registered. Once all the active probes are unregistered their is no need to be notified of page faults and kprobes unregisters itself from the page fault notifications. Hence we will have ZERO side effects when no probes are active. Signed-off-by: Anil S Keshavamurthy Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] Kprobes registers for notify page fault

2006-06-26T16:58:22Z

Kprobes now registers for page fault notifications. Signed-off-by: Anil S Keshavamurthy Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] Kprobe: multi kprobe posthandler for booster

2006-06-26T16:58:22Z

If there are multi kprobes on the same probepoint, there will be one extra aggr_kprobe on the head of kprobe list. The aggr_kprobe has aggr_post_handler/aggr_break_handler whether the other kprobe post_hander/break_handler is NULL or not. This patch modifies this, only when there is one or more kprobe in the list whose post_handler is not NULL, post_handler of aggr_kprobe will be set as aggr_post_handler. [soshima@redhat.com: !CONFIG_PREEMPT fix] Signed-off-by: bibo, mao Cc: Masami Hiramatsu Cc: Ananth N Mavinakayanahalli Cc: "Keshavamurthy, Anil S" Cc: Prasanna S Panchamukhi Cc: Jim Keniston Cc: Yumiko Sugita Cc: Hideo Aoki Signed-off-by: Satoshi Oshima Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] kprobes: NULL out non-relevant fields in struct kretprobe

2006-04-20T14:54:03Z

In cases where a struct kretprobe's *_handler fields are non-NULL, it is possible to cause a system crash, due to the possibility of calls ending up in zombie functions. Documentation clearly states that unused *_handlers should be set to NULL, but kprobe users sometimes fail to do so. Fix it by setting the non-relevant fields of the struct kretprobe to NULL. Signed-off-by: Ananth N Mavinakayanahalli Acked-by: Jim Keniston Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] kretprobe instance recycled by parent process

2006-03-26T16:57:04Z

When kretprobe probes the schedule() function, if the probed process exits then schedule() will never return, so some kretprobe instances will never be recycled. In this patch the parent process will recycle retprobe instances of the probed function and there will be no memory leak of kretprobe instances. Signed-off-by: bibo mao Cc: Masami Hiramatsu Cc: Prasanna S Panchamukhi Cc: Ananth N Mavinakayanahalli Cc: Anil S Keshavamurthy Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] sem2mutex: kprobes

2006-03-23T15:38:12Z

Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by: Ingo Molnar Acked-by: Anil S Keshavamurthy Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds