tail: fix SEGV on "tail -N"

config system: clarify PREFER_APPLETS/SH_STANDALONE effects in help text

1 files changed, 7 insertions, 2 deletions

diff --git a/Config.in b/Config.in
index 94ed109cb..a04e11b5c 100644
--- a/Config.in
+++ b/Config.in
@@ -244,8 +244,13 @@ config FEATURE_PREFER_APPLETS
         help
           This is an experimental option which directs applets about to
           call 'exec' to try and find an applicable busybox applet before
-          searching the PATH. This may affect shell, find -exec, xargs and
-          similar programs.
+          searching the PATH. This is typically done by exec'ing
+          /proc/self/exe.
+          This may affect shell, find -exec, xargs and similar applets.
+          They will use applets even if /bin/<applet> -> busybox link
+          is missing (or is not a link to busybox). However, this causes
+          problems in chroot jails without mounted /proc and with ps/top
+          (command name can be shown as 'exe' for applets started this way).
 
 config BUSYBOX_EXEC_PATH
         string "Path to BusyBox executable"