| commit | 21cc684a31ef5f9290aaef48b1c9146b019d987d | |
| author | Masami Hiramatsu <mhiramat@kernel.org> | |
| Sun, 13 May 2018 04:04:29 +0000 (13 05:04 +0100) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Tue, 22 May 2018 14:57:58 +0000 (22 16:57 +0200) | ||
| tree | a945908e789cde7131eaeef5a5a235847b443d14 | treesnapshot (tar.gz zip) |
| parent | b1690451d93fcd8af8edfa3b7fc6b966d330b0a8 | commitdiff |
ARM: 8772/1: kprobes: Prohibit kprobes on get_user functions
commit 0d73c3f8e7f6ee2aab1bb350f60c180f5ae21a2c upstream.
Since do_undefinstr() uses get_user to get the undefined
instruction, it can be called before kprobes processes
recursive check. This can cause an infinit recursive
exception.
Prohibit probing on get_user functions.
Fixes: 24ba613c9d6c ("ARM kprobes: core code")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 0d73c3f8e7f6ee2aab1bb350f60c180f5ae21a2c upstream.
Since do_undefinstr() uses get_user to get the undefined
instruction, it can be called before kprobes processes
recursive check. This can cause an infinit recursive
exception.
Prohibit probing on get_user functions.
Fixes: 24ba613c9d6c ("ARM kprobes: core code")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| arch/arm/include/asm/assembler.h | diffblobblamehistory | |
| arch/arm/lib/getuser.S | diffblobblamehistory |