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linux/drivers/tty
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Nicolas Pitre 3ddbea7542 vt: resize saved unicode buffer on alt screen exit after resize 
Instead of discarding the saved unicode buffer when the console was
resized while in the alternate screen, resize it to the current
dimensions using vc_uniscr_copy_area() to preserve its content. This
properly restores the unicode screen on alt screen exit rather than
lazily rebuilding it from a lossy reverse glyph translation.

On allocation failure the stale buffer is freed and vc_uni_lines is
set to NULL so it gets lazily rebuilt via vc_uniscr_check() when next
needed.

Fixes: 40014493ce ("vt: discard stale unicode buffer on alt screen exit after resize")
Cc: stable <stable@kernel.org>
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Link: https://patch.msgid.link/3nsr334n-079q-125n-7807-n4nq818758ns@syhkavp.arg
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-03-30 17:39:44 +02:00
..
hvc Convert 'alloc_flex' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ipwireless Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
serdev Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
serial serial: 8250_dw: Ensure BUSY is deasserted 2026-03-12 15:34:29 +01:00
vt vt: resize saved unicode buffer on alt screen exit after resize 2026-03-30 17:39:44 +02:00
amiserial.c tty: amiserial: Fix namespace collision and startup() section placement with -ffunction-sections 2025-11-21 10:04:09 +01:00
ehv_bytechan.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
goldfish.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
Kconfig TTY/Serial driver updates for 6.15-rc1 2025-04-02 18:17:33 -07:00
Makefile tty: add rpmsg driver 2021-10-21 12:35:35 +02:00
mips_ejtag_fdc.c treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
moxa.c tty: moxa: use guard()s 2025-11-21 18:30:40 +01:00
mxser.c mxser: use guard()s 2025-08-17 12:46:26 +02:00
n_gsm.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
n_hdlc.c Convert 'alloc_flex' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
n_null.c tty: ldops: unify to u8 2023-08-11 21:12:47 +02:00
n_tty.c tty: n_tty: use guard()s 2025-11-21 18:30:40 +01:00
nozomi.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
pty.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
rpmsg_tty.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
synclink_gt.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
sysrq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
tty_audit.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
tty_baudrate.c tty: Fix comment style in tty_termios_input_baud_rate() 2022-08-30 14:22:34 +02:00
tty_buffer.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
tty_io.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
tty_ioctl.c tty: simplify throttling using guard()s 2025-04-25 13:46:30 +02:00
tty_jobctrl.c tty: tty_jobctrl: fix pid memleak in disassociate_ctty() 2023-09-18 11:14:43 +02:00
tty_ldisc.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
tty_ldsem.c tty/ldsem: Remove unused ldsem_down_write_trylock 2025-02-04 14:38:42 +01:00
tty_mutex.c tty: remove TTY_MAGIC 2022-09-22 16:12:34 +02:00
tty_port.c Revert "tty: tty_port: add workqueue to flip TTY buffer" 2026-01-27 13:58:21 +01:00
tty.h tty: convert THROTTLE constants into enum 2023-10-03 14:31:16 +02:00
ttynull.c tty: add missing MODULE_DESCRIPTION() macros 2024-06-24 16:10:11 +02:00
vcc.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00