Masami Hiramatsu (Google) b69f577308 kprobes/x86: Use copy_from_kernel_nofault() to read from unsafe address ... [ Upstream commit 4e51653d5d ] Read from an unsafe address with copy_from_kernel_nofault() in arch_adjust_kprobe_addr() because this function is used before checking the address is in text or not. Syzcaller bot found a bug and reported the case if user specifies inaccessible data area, arch_adjust_kprobe_addr() will cause a kernel panic. [ mingo: Clarified the comment. ] Fixes: cc66bb9145 ("x86/ibt,kprobes: Cure sym+0 equals fentry woes") Reported-by: Qiang Zhang <zzqq0103.hey@gmail.com> Tested-by: Jinghao Jia <jinghao7@illinois.edu> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/171042945004.154897.2221804961882915806.stgit@devnote2 Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-04-03 15:32:34 +02:00
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Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
common.h	x86,rethook,kprobes: Replace kretprobe with rethook on x86	2022-03-28 19:38:51 -07:00
core.c	kprobes/x86: Use copy_from_kernel_nofault() to read from unsafe address	2024-04-03 15:32:34 +02:00
ftrace.c	ftrace: disable preemption when recursion locked	2021-10-27 11:21:49 -04:00
opt.c	x86/retpoline,kprobes: Skip optprobe check for indirect jumps with retpolines and IBT	2023-08-14 11:46:51 +02:00