Go to file
Dominique Martinet e5ece5f8b3 swaynag: fix use-after-free in wl_display_dispatch
When destroying swaynag from within wl_display_dispatch, we cannot
disconnect the display as that will free the queue's event_list.
Free it after running the loop instead.

Fixes this use-after-free:
==7312==ERROR: AddressSanitizer: heap-use-after-free on address 0x612000000110 at pc 0x000000412a9f bp 0x7ffd4e811760 sp 0x7ffd4e811750
READ of size 8 at 0x612000000110 thread T0
    #0 0x412a9e in wl_list_empty ../common/list.c:206
    #1 0x7f5b58f0d42f in dispatch_queue src/wayland-client.c:1572
    #2 0x7f5b58f0d42f in wl_display_dispatch_queue_pending src/wayland-client.c:1815
    #3 0x40f465 in swaynag_run ../swaynag/swaynag.c:390
    #4 0x407576 in main ../swaynag/main.c:123
    #5 0x7f5b58bb9412 in __libc_start_main ../csu/libc-start.c:308
    #6 0x404a3d in _start (/opt/wayland/bin/swaynag+0x404a3d)

0x612000000110 is located 208 bytes inside of 320-byte region [0x612000000040,0x612000000180)
freed by thread T0 here:
    #0 0x7f5b594ab480 in free (/lib64/libasan.so.5+0xef480)
    #1 0x40faff in swaynag_destroy ../swaynag/swaynag.c:454
    #2 0x40cbb4 in layer_surface_closed ../swaynag/swaynag.c:82
    #3 0x7f5b583e1acd in ffi_call_unix64 (/lib64/libffi.so.6+0x6acd)

previously allocated by thread T0 here:
    #0 0x7f5b594aba50 in __interceptor_calloc (/lib64/libasan.so.5+0xefa50)
    #1 0x7f5b58f0c902 in wl_display_connect_to_fd src/wayland-private.h:236

(you need a wayland compiled with asan, my wl_list hack, or running
with valgrind to see this trace)
2018-10-07 16:35:10 +09:00
assets Recompressed PNG files 2017-01-05 21:49:28 -05:00
client Change _XOPEN_SOURCE defines to _POSIX_C_SOURCE 2018-09-03 09:08:49 +02:00
common swaybg: fix increasingly smaller bg on hotplug 2018-09-23 15:17:36 -04:00
completions added untested files 2018-08-26 18:53:51 +03:00
include swaylock: Support keyboard and pointer disconnects and reconnects 2018-10-06 09:38:12 +10:00
protocols Update for swaywm/wlroots#1243 2018-09-14 19:21:44 +02:00
security.d delete references to swaygrab 2018-07-30 16:24:46 +01:00
sway ipc: set "type" of floating containers to "floating_con" 2018-10-06 18:11:05 +01:00
swaybar swaybar: fix binding to wl_pointer multiple times 2018-10-06 19:13:44 +02:00
swaybg Add support for installing binaries with DT_RPATH 2018-09-30 15:37:01 +03:00
swayidle Add support for installing binaries with DT_RPATH 2018-09-30 15:37:01 +03:00
swaylock Fix swaylock w/shadow on glibc, improve security 2018-10-06 12:20:12 -04:00
swaymsg Add support for installing binaries with DT_RPATH 2018-09-30 15:37:01 +03:00
swaynag swaynag: fix use-after-free in wl_display_dispatch 2018-10-07 16:35:10 +09:00
.build.yml Add scdoc to .build.yml 2018-05-11 21:40:52 -04:00
.clang-format Update .clang-format - not entirely usable yet 2017-01-10 23:30:34 -05:00
.editorconfig Create .editorconfig 2016-07-04 14:12:32 +02:00
.gitignore Add subprojects to gitignore 2018-03-28 12:22:28 -04:00
config.in config.in: nag user on exit 2018-08-02 15:42:43 +01:00
CONTRIBUTING.md Update CONTRIBUTING.md 2018-10-06 11:52:28 -04:00
LICENSE MIT license 2017-01-06 13:45:48 -05:00
meson.build Fix swaylock w/shadow on glibc, improve security 2018-10-06 12:20:12 -04:00
meson_options.txt Add support for installing binaries with DT_RPATH 2018-09-30 15:37:01 +03:00
README.bg.md spellcheck and help add. 2018-08-28 17:06:15 +03:00
README.de.md Remove setcap instructions 2018-08-08 11:40:33 -04:00
README.el.md Remove setcap instructions 2018-08-08 11:40:33 -04:00
README.fr.md Remove setcap instructions 2018-08-08 11:40:33 -04:00
README.it.md Remove setcap instructions 2018-08-08 11:40:33 -04:00
README.ja.md stabilityに関する注記を更新 2018-09-21 23:26:01 +09:00
README.md Update stability notice in README 2018-09-21 08:51:50 -04:00
README.pt.md delete references to swaygrab 2018-07-30 16:24:46 +01:00
README.ru.md delete references to swaygrab 2018-07-30 16:24:46 +01:00
README.uk.md delete references to swaygrab 2018-07-30 16:24:46 +01:00
sway.desktop Add Wayland and Xorg session files 2015-08-20 23:12:34 +02:00

sway

English - 日本語 - Deutsch - Ελληνικά - Français - Українська - Italiano - Português - Русский - Български

"SirCmpwn's Wayland compositor" is a work in progress i3-compatible Wayland compositor. Read the FAQ. Join the IRC channel (#sway on irc.freenode.net).

Notice: work is well underway to port sway to wlroots. This is unstable and unsupported - we accept patches, but are not fond of bug reports. We are no longer accepting bugs for 0.15.

If you'd like to support sway development, please contribute to SirCmpwn's Patreon page.

Release Signatures

Releases are signed with B22DA89A and published on GitHub.

Status

Installation

From Packages

Sway is available in many distributions. Try installing the "sway" package for yours. If it's not available, check out this wiki page for information on installation for your distributions.

If you're interested in packaging sway for your distribution, stop by the IRC channel or shoot an email to sir@cmpwn.com for advice.

Compiling from Source

Install dependencies:

  • meson
  • wlroots
  • wayland
  • xwayland
  • libinput >= 1.6.0
  • libcap
  • pcre
  • json-c >= 0.13
  • pango
  • cairo
  • gdk-pixbuf2 *
  • pam **
  • dbus >= 1.10 ***
  • scdoc (required for man pages)

*Only required for swaybar, swaybg, and swaylock

**Only required for swaylock

***Only required for tray support

Run these commands:

meson build
ninja -C build
sudo ninja -C build install

On systems without logind, you need to suid the sway binary:

sudo chmod a+s /usr/local/bin/sway

Sway will drop root permissions shortly after startup.

Configuration

If you already use i3, then copy your i3 config to ~/.config/sway/config and it'll work out of the box. Otherwise, copy the sample configuration file to ~/.config/sway/config. It is usually located at /etc/sway/config. Run man 5 sway for information on the configuration.

Running

Run sway from a TTY. Some display managers may work but are not supported by sway (gdm is known to work fairly well).