Jiri Olsa c09eb2e578 bpf: Adjust kprobe_multi entry_ip for CONFIG_X86_KERNEL_IBT ... Martynas reported bpf_get_func_ip returning +4 address when CONFIG_X86_KERNEL_IBT option is enabled. When CONFIG_X86_KERNEL_IBT is enabled we'll have endbr instruction at the function entry, which screws return value of bpf_get_func_ip() helper that should return the function address. There's short term workaround for kprobe_multi bpf program made by Alexei [1], but we need this fixup also for bpf_get_attach_cookie, that returns cookie based on the entry_ip value. Moving the fixup in the fprobe handler, so both bpf_get_func_ip and bpf_get_attach_cookie get expected function address when CONFIG_X86_KERNEL_IBT option is enabled. Also renaming kprobe_multi_link_handler entry_ip argument to fentry_ip so it's clearer this is an ftrace __fentry__ ip. [1] commit 7f0059b58f ("selftests/bpf: Fix kprobe_multi test.") Cc: Peter Zijlstra <peterz@infradead.org> Reported-by: Martynas Pumputis <m@lambda.lt> Acked-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/20220926153340.1621984-5-jolsa@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2022-09-26 20:30:39 -07:00
..
crypto/chacha20-s390	tools/testing/crypto: Use vzalloc instead of vmalloc+memset	2022-07-05 14:46:36 +02:00
cxl	cxl/hdm: Commit decoder state to hardware	2022-07-25 12:18:07 -07:00
fault-injection
ktest
kunit	kunit: tool: Enable virtio/PCI by default on UML	2022-07-08 11:22:29 -06:00
memblock	memblock updates for v5.20	2022-08-09 09:48:30 -07:00
nvdimm	dax: introduce DAX_RECOVERY_WRITE dax access mode	2022-05-16 13:35:56 -07:00
radix-tree	tools: Add kmem_cache_alloc_lru()	2022-04-22 14:24:28 -04:00
scatterlist	tools/testing/scatterlist: add missing defines	2022-01-30 09:56:58 +02:00
selftests	bpf: Adjust kprobe_multi entry_ip for CONFIG_X86_KERNEL_IBT	2022-09-26 20:30:39 -07:00
vsock	vsock_test: POLLIN + SO_RCVLOWAT test	2022-08-23 10:43:12 +02:00