kernel/linux.git/samples/kprobes, branch v6.6.132

samples/kprobes: Add LoongArch support

2023-02-25T14:12:17+00:00

Add LoongArch specific info in handler_pre() and handler_post(). Tested-by: Jeff Xie Signed-off-by: Tiezhu Yang Signed-off-by: Huacai Chen

samples: Use KSYM_NAME_LEN for kprobes

2022-07-12T20:36:45+00:00

It is better and enough to use KSYM_NAME_LEN for kprobes in samples, no need to define and use the other values. Link: https://lkml.kernel.org/r/1654651402-21552-1-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Tiezhu Yang Acked-by: Masami Hiramatsu (Google) Signed-off-by: Steven Rostedt (Google)

samples/kretprobes: Fix return value if register_kretprobe() failed

2021-10-26T21:23:46+00:00

Use the actual return value instead of always -1 if register_kretprobe() failed. E.g. without this patch: # insmod samples/kprobes/kretprobe_example.ko func=no_such_func insmod: ERROR: could not insert module samples/kprobes/kretprobe_example.ko: Operation not permitted With this patch: # insmod samples/kprobes/kretprobe_example.ko func=no_such_func insmod: ERROR: could not insert module samples/kprobes/kretprobe_example.ko: Unknown symbol in module Link: https://lkml.kernel.org/r/1635213091-24387-2-git-send-email-yangtiezhu@loongson.cn Fixes: 804defea1c02 ("Kprobes: move kprobe examples to samples/") Signed-off-by: Tiezhu Yang Acked-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware)

Merge tag 'docs-5.14' of git://git.lwn.net/linux

2021-06-28T23:53:05+00:00

Pull documentation updates from Jonathan Corbet: "This was a reasonably active cycle for documentation; this includes: - Some kernel-doc cleanups. That script is still regex onslaught from hell, but it has gotten a little better. - Improvements to the checkpatch docs, which are also used by the tool itself. - A major update to the pathname lookup documentation. - Elimination of :doc: markup, since our automarkup magic can create references from filenames without all the extra noise. - The flurry of Chinese translation activity continues. Plus, of course, the usual collection of updates, typo fixes, and warning fixes" * tag 'docs-5.14' of git://git.lwn.net/linux: (115 commits) docs: path-lookup: use bare function() rather than literals docs: path-lookup: update symlink description docs: path-lookup: update get_link() ->follow_link description docs: path-lookup: update WALK_GET, WALK_PUT desc docs: path-lookup: no get_link() docs: path-lookup: update i_op->put_link and cookie description docs: path-lookup: i_op->follow_link replaced with i_op->get_link docs: path-lookup: Add macro name to symlink limit description docs: path-lookup: remove filename_mountpoint docs: path-lookup: update do_last() part docs: path-lookup: update path_mountpoint() part docs: path-lookup: update path_to_nameidata() part docs: path-lookup: update follow_managed() part docs: Makefile: Use CONFIG_SHELL not SHELL docs: Take a little noise out of the build process docs: x86: avoid using ReST :doc:`foo` markup docs: virt: kvm: s390-pv-boot.rst: avoid using ReST :doc:`foo` markup docs: userspace-api: landlock.rst: avoid using ReST :doc:`foo` markup docs: trace: ftrace.rst: avoid using ReST :doc:`foo` markup docs: trace: coresight: coresight.rst: avoid using ReST :doc:`foo` markup ...

kprobes: Remove kprobe::fault_handler

2021-06-01T14:00:08+00:00

The reason for kprobe::fault_handler(), as given by their comment: * We come here because instructions in the pre/post * handler caused the page_fault, this could happen * if handler tries to access user space by * copy_from_user(), get_user() etc. Let the * user-specified handler try to fix it first. Is just plain bad. Those other handlers are ran from non-preemptible context and had better use _nofault() functions. Also, there is no upstream usage of this. Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Christoph Hellwig Acked-by: Masami Hiramatsu Link: https://lore.kernel.org/r/20210525073213.561116662@infradead.org

samples/kprobes: Fix typo in handler_post()

2021-05-20T20:03:47+00:00

It should use post_handler instead of pre_handler in handler_post(). As Joe Perches suggested, it would be better to use pr_fmt and remove all the embedded pre/post/fault strings. This would change the style of the output through. Fixes: e16c5dd5157e ("samples/kprobes: Add s390 case in kprobe example module") Suggested-by: Joe Perches Signed-off-by: Tiezhu Yang Acked-by: Marc Koderer Acked-by: Masami Hiramatsu Link: https://lore.kernel.org/r/1621218083-23519-3-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Jonathan Corbet

samples/kprobes: Fix typo in handler_fault()

2021-05-20T20:02:54+00:00

Fix a defective format in handler_fault() ending with an 'n' that should be '\n'. Suggested-by: Joe Perches Signed-off-by: Tiezhu Yang Acked-by: Masami Hiramatsu Link: https://lore.kernel.org/r/1621218083-23519-2-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Jonathan Corbet

samples/kprobes: Add riscv support

2021-04-26T15:25:03+00:00

Add riscv specific info dump in both handler_pre() and handler_post(). Signed-off-by: Jisheng Zhang Acked-by: Masami Hiramatsu Signed-off-by: Palmer Dabbelt

samples/kprobes: Add ARM support

2021-01-18T20:24:18+00:00

Plenty of architectures are already supported and this adds ARM support. Signed-off-by: Marc Koderer Acked-by: Masami Hiramatsu Link: https://lore.kernel.org/r/20210112154054.17138-1-marc@koderer.com Signed-off-by: Jonathan Corbet

samples/kprobes: Remove misleading comment

2021-01-11T20:33:06+00:00

The example file supports many architectures not only x86 and PPC. Signed-off-by: Marc Koderer Cc: trivial@kernel.org Link: https://lore.kernel.org/r/20201228060415.2194-1-marc@koderer.com Signed-off-by: Jonathan Corbet