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| author |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-07-31 09:39:56 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-07-31 09:39:56 +0200 |
| commit | fe3015748a905e08eb0e1750aa2928f520063d59 (patch) | |
| tree | d15524d1f7931e8e5964e9ff8368792d09282da5 /kernel/kprobes.c | |
| parent | parport_pc: add support for ASIX AX99100 (diff) | |
| parent | Linux 6.5-rc4 (diff) | |
| download | wireguard-linux-fe3015748a905e08eb0e1750aa2928f520063d59.tar.xz wireguard-linux-fe3015748a905e08eb0e1750aa2928f520063d59.zip | |
Merge 6.5-rc4 into tty-next
We need the serial/tty fixes in here as well for testing and future
development.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/kprobes.c')
| -rw-r--r-- | kernel/kprobes.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 1fc6095d502d..ca385b61d546 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -1545,6 +1545,17 @@ static int check_ftrace_location(struct kprobe *p) return 0; } +static bool is_cfi_preamble_symbol(unsigned long addr) +{ + char symbuf[KSYM_NAME_LEN]; + + if (lookup_symbol_name(addr, symbuf)) + return false; + + return str_has_prefix("__cfi_", symbuf) || + str_has_prefix("__pfx_", symbuf); +} + static int check_kprobe_address_safe(struct kprobe *p, struct module **probed_mod) { @@ -1563,7 +1574,8 @@ static int check_kprobe_address_safe(struct kprobe *p, within_kprobe_blacklist((unsigned long) p->addr) || jump_label_text_reserved(p->addr, p->addr) || static_call_text_reserved(p->addr, p->addr) || - find_bug((unsigned long)p->addr)) { + find_bug((unsigned long)p->addr) || + is_cfi_preamble_symbol((unsigned long)p->addr)) { ret = -EINVAL; goto out; } |