update to 5.8.10, add patches to revert some fbcon stuff so bootsplash still...

update to 5.8.10, add patches to revert some fbcon stuff so bootsplash still works and remove the STRICT MODULE patch, since that should now be fixed upstream
parent ef5b1365
Pipeline #879 failed with stage
in 4 minutes
--- b/drivers/video/fbdev/core/bitblit.c
+++ a/drivers/video/fbdev/core/bitblit.c
@@ -234,7 +234,7 @@
}
static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode,
+ int softback_lines, int fg, int bg)
- int fg, int bg)
{
struct fb_cursor cursor;
struct fbcon_ops *ops = info->fbcon_par;
@@ -247,6 +247,15 @@
cursor.set = 0;
+ if (softback_lines) {
+ if (y + softback_lines >= vc->vc_rows) {
+ mode = CM_ERASE;
+ ops->cursor_flash = 0;
+ return;
+ } else
+ y += softback_lines;
+ }
+
c = scr_readw((u16 *) vc->vc_pos);
attribute = get_attribute(info, c);
src = vc->vc_font.data + ((c & charmask) * (w * vc->vc_font.height));
--- b/drivers/video/fbdev/core/fbcon.c
+++ a/drivers/video/fbdev/core/fbcon.c
@@ -394,7 +394,7 @@
c = scr_readw((u16 *) vc->vc_pos);
mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
CM_ERASE : CM_DRAW;
+ ops->cursor(vc, info, mode, 0, get_color(vc, info, c, 1),
- ops->cursor(vc, info, mode, get_color(vc, info, c, 1),
get_color(vc, info, c, 0));
console_unlock();
}
@@ -1345,7 +1345,7 @@
ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
+ ops->cursor(vc, info, mode, 0, get_color(vc, info, c, 1),
- ops->cursor(vc, info, mode, get_color(vc, info, c, 1),
get_color(vc, info, c, 0));
}
--- b/drivers/video/fbdev/core/fbcon.h
+++ a/drivers/video/fbdev/core/fbcon.h
@@ -62,7 +62,7 @@
void (*clear_margins)(struct vc_data *vc, struct fb_info *info,
int color, int bottom_only);
void (*cursor)(struct vc_data *vc, struct fb_info *info, int mode,
+ int softback_lines, int fg, int bg);
- int fg, int bg);
int (*update_start)(struct fb_info *info);
int (*rotate_font)(struct fb_info *info, struct vc_data *vc);
struct fb_var_screeninfo var; /* copy of the current fb_var_screeninfo */
--- b/drivers/video/fbdev/core/fbcon_ccw.c
+++ a/drivers/video/fbdev/core/fbcon_ccw.c
@@ -219,7 +219,7 @@
}
static void ccw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
+ int softback_lines, int fg, int bg)
- int fg, int bg)
{
struct fb_cursor cursor;
struct fbcon_ops *ops = info->fbcon_par;
@@ -236,6 +236,15 @@
cursor.set = 0;
+ if (softback_lines) {
+ if (y + softback_lines >= vc->vc_rows) {
+ mode = CM_ERASE;
+ ops->cursor_flash = 0;
+ return;
+ } else
+ y += softback_lines;
+ }
+
c = scr_readw((u16 *) vc->vc_pos);
attribute = get_attribute(info, c);
src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.width));
--- b/drivers/video/fbdev/core/fbcon_cw.c
+++ a/drivers/video/fbdev/core/fbcon_cw.c
@@ -202,7 +202,7 @@
}
static void cw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
+ int softback_lines, int fg, int bg)
- int fg, int bg)
{
struct fb_cursor cursor;
struct fbcon_ops *ops = info->fbcon_par;
@@ -219,6 +219,15 @@
cursor.set = 0;
+ if (softback_lines) {
+ if (y + softback_lines >= vc->vc_rows) {
+ mode = CM_ERASE;
+ ops->cursor_flash = 0;
+ return;
+ } else
+ y += softback_lines;
+ }
+
c = scr_readw((u16 *) vc->vc_pos);
attribute = get_attribute(info, c);
src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.width));
--- b/drivers/video/fbdev/core/fbcon_ud.c
+++ a/drivers/video/fbdev/core/fbcon_ud.c
@@ -249,7 +249,7 @@
}
static void ud_cursor(struct vc_data *vc, struct fb_info *info, int mode,
+ int softback_lines, int fg, int bg)
- int fg, int bg)
{
struct fb_cursor cursor;
struct fbcon_ops *ops = info->fbcon_par;
@@ -267,6 +267,15 @@
cursor.set = 0;
+ if (softback_lines) {
+ if (y + softback_lines >= vc->vc_rows) {
+ mode = CM_ERASE;
+ ops->cursor_flash = 0;
+ return;
+ } else
+ y += softback_lines;
+ }
+
c = scr_readw((u16 *) vc->vc_pos);
attribute = get_attribute(info, c);
src = ops->fontbuffer + ((c & charmask) * (w * vc->vc_font.height));
--- b/drivers/video/fbdev/core/tileblit.c
+++ a/drivers/video/fbdev/core/tileblit.c
@@ -80,7 +80,7 @@
}
static void tile_cursor(struct vc_data *vc, struct fb_info *info, int mode,
+ int softback_lines, int fg, int bg)
- int fg, int bg)
{
struct fb_tilecursor cursor;
int use_sw = (vc->vc_cursor_type & 0x10);
From 967815bc635b33aed70cb3f7d0c2aaba2252131c Mon Sep 17 00:00:00 2001
From: Dan Johansen <strit@manjaro.org>
Date: Sat, 29 Aug 2020 10:28:47 +0200
Subject: [PATCH] revert: module: Harden STRICT_MODULE_RWX
---
kernel/module.c | 24 ------------------------
1 file changed, 24 deletions(-)
diff --git a/kernel/module.c b/kernel/module.c
index 1c5cff34d9f2..a47ce4c5e4b1 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2089,28 +2089,9 @@ static void module_enable_nx(const struct module *mod)
frob_writable_data(&mod->init_layout, set_memory_nx);
}
-static int module_enforce_rwx_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
- char *secstrings, struct module *mod)
-{
- const unsigned long shf_wx = SHF_WRITE|SHF_EXECINSTR;
- int i;
-
- for (i = 0; i < hdr->e_shnum; i++) {
- if ((sechdrs[i].sh_flags & shf_wx) == shf_wx)
- return -ENOEXEC;
- }
-
- return 0;
-}
-
#else /* !CONFIG_STRICT_MODULE_RWX */
static void module_enable_nx(const struct module *mod) { }
static void module_enable_ro(const struct module *mod, bool after_init) {}
-static int module_enforce_rwx_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
- char *secstrings, struct module *mod)
-{
- return 0;
-}
#endif /* CONFIG_STRICT_MODULE_RWX */
#ifdef CONFIG_LIVEPATCH
@@ -3451,11 +3432,6 @@ static struct module *layout_and_allocate(struct load_info *info, int flags)
if (err < 0)
return ERR_PTR(err);
- err = module_enforce_rwx_sections(info->hdr, info->sechdrs,
- info->secstrings, info->mod);
- if (err < 0)
- return ERR_PTR(err);
-
/* We will do a special allocation for per-cpu sections later. */
info->sechdrs[info->index.pcpu].sh_flags &= ~(unsigned long)SHF_ALLOC;
--
2.28.0
--- b/drivers/video/fbdev/core/fbcon.c
+++ a/drivers/video/fbdev/core/fbcon.c
@@ -122,6 +122,12 @@
/* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
enums. */
static int logo_shown = FBCON_LOGO_CANSHOW;
+/* Software scrollback */
+static int fbcon_softback_size = 32768;
+static unsigned long softback_buf, softback_curr;
+static unsigned long softback_in;
+static unsigned long softback_top, softback_end;
+static int softback_lines;
/* console mappings */
static int first_fb_vc;
static int last_fb_vc = MAX_NR_CONSOLES - 1;
@@ -161,6 +167,8 @@
static const struct consw fb_con;
+#define CM_SOFTBACK (8)
+
#define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
static int fbcon_set_origin(struct vc_data *);
@@ -365,6 +373,18 @@
return color;
}
+static void fbcon_update_softback(struct vc_data *vc)
+{
+ int l = fbcon_softback_size / vc->vc_size_row;
+
+ if (l > 5)
+ softback_end = softback_buf + l * vc->vc_size_row;
+ else
+ /* Smaller scrollback makes no sense, and 0 would screw
+ the operation totally */
+ softback_top = 0;
+}
+
static void fb_flashcursor(struct work_struct *work)
{
struct fb_info *info = container_of(work, struct fb_info, queue);
@@ -394,7 +414,7 @@
c = scr_readw((u16 *) vc->vc_pos);
mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
CM_ERASE : CM_DRAW;
+ ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
- ops->cursor(vc, info, mode, 0, get_color(vc, info, c, 1),
get_color(vc, info, c, 0));
console_unlock();
}
@@ -451,7 +471,13 @@
}
if (!strncmp(options, "scrollback:", 11)) {
+ options += 11;
+ if (*options) {
+ fbcon_softback_size = simple_strtoul(options, &options, 0);
+ if (*options == 'k' || *options == 'K') {
+ fbcon_softback_size *= 1024;
+ }
+ }
- pr_warn("Ignoring scrollback size option\n");
continue;
}
@@ -996,6 +1022,31 @@
set_blitting_type(vc, info);
+ if (info->fix.type != FB_TYPE_TEXT) {
+ if (fbcon_softback_size) {
+ if (!softback_buf) {
+ softback_buf =
+ (unsigned long)
+ kvmalloc(fbcon_softback_size,
+ GFP_KERNEL);
+ if (!softback_buf) {
+ fbcon_softback_size = 0;
+ softback_top = 0;
+ }
+ }
+ } else {
+ if (softback_buf) {
+ kvfree((void *) softback_buf);
+ softback_buf = 0;
+ softback_top = 0;
+ }
+ }
+ if (softback_buf)
+ softback_in = softback_top = softback_curr =
+ softback_buf;
+ softback_lines = 0;
+ }
+
/* Setup default font */
if (!p->fontdata && !vc->vc_font.data) {
if (!fontname[0] || !(font = find_font(fontname)))
@@ -1169,6 +1220,9 @@
if (logo)
fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
+ if (vc == svc && softback_buf)
+ fbcon_update_softback(vc);
+
if (ops->rotate_font && ops->rotate_font(info, vc)) {
ops->rotate = FB_ROTATE_UR;
set_blitting_type(vc, info);
@@ -1331,6 +1385,7 @@
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_ops *ops = info->fbcon_par;
+ int y;
int c = scr_readw((u16 *) vc->vc_pos);
ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
@@ -1344,8 +1399,16 @@
fbcon_add_cursor_timer(info);
ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
+ if (mode & CM_SOFTBACK) {
+ mode &= ~CM_SOFTBACK;
+ y = softback_lines;
+ } else {
+ if (softback_lines)
+ fbcon_set_origin(vc);
+ y = 0;
+ }
+ ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
- ops->cursor(vc, info, mode, 0, get_color(vc, info, c, 1),
get_color(vc, info, c, 0));
}
@@ -1416,6 +1479,8 @@
if (con_is_visible(vc)) {
update_screen(vc);
+ if (softback_buf)
+ fbcon_update_softback(vc);
}
}
@@ -1553,6 +1618,99 @@
scrollback_current = 0;
}
+static void fbcon_redraw_softback(struct vc_data *vc, struct fbcon_display *p,
+ long delta)
+{
+ int count = vc->vc_rows;
+ unsigned short *d, *s;
+ unsigned long n;
+ int line = 0;
+
+ d = (u16 *) softback_curr;
+ if (d == (u16 *) softback_in)
+ d = (u16 *) vc->vc_origin;
+ n = softback_curr + delta * vc->vc_size_row;
+ softback_lines -= delta;
+ if (delta < 0) {
+ if (softback_curr < softback_top && n < softback_buf) {
+ n += softback_end - softback_buf;
+ if (n < softback_top) {
+ softback_lines -=
+ (softback_top - n) / vc->vc_size_row;
+ n = softback_top;
+ }
+ } else if (softback_curr >= softback_top
+ && n < softback_top) {
+ softback_lines -=
+ (softback_top - n) / vc->vc_size_row;
+ n = softback_top;
+ }
+ } else {
+ if (softback_curr > softback_in && n >= softback_end) {
+ n += softback_buf - softback_end;
+ if (n > softback_in) {
+ n = softback_in;
+ softback_lines = 0;
+ }
+ } else if (softback_curr <= softback_in && n > softback_in) {
+ n = softback_in;
+ softback_lines = 0;
+ }
+ }
+ if (n == softback_curr)
+ return;
+ softback_curr = n;
+ s = (u16 *) softback_curr;
+ if (s == (u16 *) softback_in)
+ s = (u16 *) vc->vc_origin;
+ while (count--) {
+ unsigned short *start;
+ unsigned short *le;
+ unsigned short c;
+ int x = 0;
+ unsigned short attr = 1;
+
+ start = s;
+ le = advance_row(s, 1);
+ do {
+ c = scr_readw(s);
+ if (attr != (c & 0xff00)) {
+ attr = c & 0xff00;
+ if (s > start) {
+ fbcon_putcs(vc, start, s - start,
+ line, x);
+ x += s - start;
+ start = s;
+ }
+ }
+ if (c == scr_readw(d)) {
+ if (s > start) {
+ fbcon_putcs(vc, start, s - start,
+ line, x);
+ x += s - start + 1;
+ start = s + 1;
+ } else {
+ x++;
+ start++;
+ }
+ }
+ s++;
+ d++;
+ } while (s < le);
+ if (s > start)
+ fbcon_putcs(vc, start, s - start, line, x);
+ line++;
+ if (d == (u16 *) softback_end)
+ d = (u16 *) softback_buf;
+ if (d == (u16 *) softback_in)
+ d = (u16 *) vc->vc_origin;
+ if (s == (u16 *) softback_end)
+ s = (u16 *) softback_buf;
+ if (s == (u16 *) softback_in)
+ s = (u16 *) vc->vc_origin;
+ }
+}
+
static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p,
int line, int count, int dy)
{
@@ -1692,6 +1850,31 @@
}
}
+static inline void fbcon_softback_note(struct vc_data *vc, int t,
+ int count)
+{
+ unsigned short *p;
+
+ if (vc->vc_num != fg_console)
+ return;
+ p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
+
+ while (count) {
+ scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
+ count--;
+ p = advance_row(p, 1);
+ softback_in += vc->vc_size_row;
+ if (softback_in == softback_end)
+ softback_in = softback_buf;
+ if (softback_in == softback_top) {
+ softback_top += vc->vc_size_row;
+ if (softback_top == softback_end)
+ softback_top = softback_buf;
+ }
+ }
+ softback_curr = softback_in;
+}
+
static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
enum con_scroll dir, unsigned int count)
{
@@ -1714,6 +1897,8 @@
case SM_UP:
if (count > vc->vc_rows) /* Maximum realistic size */
count = vc->vc_rows;
+ if (softback_top)
+ fbcon_softback_note(vc, t, count);
if (logo_shown >= 0)
goto redraw_up;
switch (p->scrollmode) {
@@ -2084,6 +2269,14 @@
info = registered_fb[con2fb_map[vc->vc_num]];
ops = info->fbcon_par;
+ if (softback_top) {
+ if (softback_lines)
+ fbcon_set_origin(vc);
+ softback_top = softback_curr = softback_in = softback_buf;
+ softback_lines = 0;
+ fbcon_update_softback(vc);
+ }
+
if (logo_shown >= 0) {
struct vc_data *conp2 = vc_cons[logo_shown].d;
@@ -2407,6 +2600,9 @@
int cnt;
char *old_data = NULL;
+ if (con_is_visible(vc) && softback_lines)
+ fbcon_set_origin(vc);
+
resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
if (p->userfont)
old_data = vc->vc_font.data;
@@ -2432,6 +2628,8 @@
cols /= w;
rows /= h;
vc_resize(vc, cols, rows);
+ if (con_is_visible(vc) && softback_buf)
+ fbcon_update_softback(vc);
} else if (con_is_visible(vc)
&& vc->vc_mode == KD_TEXT) {
fbcon_clear_margins(vc, 0);
@@ -2590,7 +2788,19 @@
static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
{
+ unsigned long p;
+ int line;
+
+ if (vc->vc_num != fg_console || !softback_lines)
+ return (u16 *) (vc->vc_origin + offset);
+ line = offset / vc->vc_size_row;
+ if (line >= softback_lines)
+ return (u16 *) (vc->vc_origin + offset -
+ softback_lines * vc->vc_size_row);
+ p = softback_curr + offset;
+ if (p >= softback_end)
+ p += softback_buf - softback_end;
+ return (u16 *) p;
- return (u16 *) (vc->vc_origin + offset);
}
static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
@@ -2604,7 +2814,22 @@
x = offset % vc->vc_cols;
y = offset / vc->vc_cols;
+ if (vc->vc_num == fg_console)
+ y += softback_lines;
ret = pos + (vc->vc_cols - x) * 2;
+ } else if (vc->vc_num == fg_console && softback_lines) {
+ unsigned long offset = pos - softback_curr;
+
+ if (pos < softback_curr)
+ offset += softback_end - softback_buf;
+ offset /= 2;
+ x = offset % vc->vc_cols;
+ y = offset / vc->vc_cols;
+ ret = pos + (vc->vc_cols - x) * 2;
+ if (ret == softback_end)
+ ret = softback_buf;
+ if (ret == softback_in)
+ ret = vc->vc_origin;
} else {
/* Should not happen */
x = y = 0;
@@ -2632,11 +2857,106 @@
a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
(((a) & 0x0700) << 4);
scr_writew(a, p++);
+ if (p == (u16 *) softback_end)
+ p = (u16 *) softback_buf;
+ if (p == (u16 *) softback_in)
+ p = (u16 *) vc->vc_origin;
+ }
+}
+
+static void fbcon_scrolldelta(struct vc_data *vc, int lines)
+{
+ struct fb_info *info = registered_fb[con2fb_map[fg_console]];
+ struct fbcon_ops *ops = info->fbcon_par;
+ struct fbcon_display *disp = &fb_display[fg_console];
+ int offset, limit, scrollback_old;
+
+ if (softback_top) {
+ if (vc->vc_num != fg_console)
+ return;
+ if (vc->vc_mode != KD_TEXT || !lines)
+ return;
+ if (logo_shown >= 0) {
+ struct vc_data *conp2 = vc_cons[logo_shown].d;
+
+ if (conp2->vc_top == logo_lines
+ && conp2->vc_bottom == conp2->vc_rows)
+ conp2->vc_top = 0;
+ if (logo_shown == vc->vc_num) {
+ unsigned long p, q;
+ int i;
+
+ p = softback_in;
+ q = vc->vc_origin +
+ logo_lines * vc->vc_size_row;
+ for (i = 0; i < logo_lines; i++) {
+ if (p == softback_top)
+ break;
+ if (p == softback_buf)
+ p = softback_end;
+ p -= vc->vc_size_row;
+ q -= vc->vc_size_row;
+ scr_memcpyw((u16 *) q, (u16 *) p,
+ vc->vc_size_row);
+ }
+ softback_in = softback_curr = p;
+ update_region(vc, vc->vc_origin,
+ logo_lines * vc->vc_cols);
+ }
+ logo_shown = FBCON_LOGO_CANSHOW;
+ }
+ fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
+ fbcon_redraw_softback(vc, disp, lines);
+ fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
+ return;
}
+