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i3-compatible Wayland compositor https://swaywm.org
6,831 Commits 10 Branches 91 Tags 35 MiB
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Alexander Orzechowski 8a3026337f view: Fix null dereference 
There seems to be a null pointer access that can happen. I was able to
reproduce this by running the cemu emulator[1] with the new collabora
wine wayland driver[2] and opening and closing some sub menus.

Adding a trival null check seems to do the trick to stop sway from
crashing and returning to tty and everything else works normally.

[1]: http://cemu.info/
[2]: https://www.winehq.org/pipermail/wine-devel/2021-December/203035.html

Stack trace from lldb:

* thread #1, name = 'sway', stop reason = signal SIGSEGV: invalid address (fault address: 0xf8)
    frame #0: 0x00005555555c3fc3 sway`view_child_init(child=0x0000555555f67940, impl=0x00005555555ee030, view=0x00005555565bc590, surface=0x00005555565b6940) at view.c:1117:25
   1114		wl_signal_add(&view->events.unmap, &child->view_unmap);
   1115		child->view_unmap.notify = view_child_handle_view_unmap;
   1116	
-> 1117		struct sway_workspace *workspace = child->view->container->pending.workspace;
   1118		if (workspace) {
   1119			wlr_surface_send_enter(child->surface, workspace->output->wlr_output);
   1120		}
(lldb) up
error: sway {0x000342ab}: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x67) attribute, but range extraction failed (invalid range list offset 0x67), please file a bug and attach the file at the start of this error message
frame #1: 0x00005555555c39f8 sway`view_child_subsurface_create(child=0x00005555564a10d0, wlr_subsurface=0x0000555556586910) at view.c:985:2
   982 		}
   983 		subsurface->child.parent = child;
   984 		wl_list_insert(&child->children, &subsurface->child.link);
-> 985 		view_child_init(&subsurface->child, &subsurface_impl, child->view,
   986 			wlr_subsurface->surface);
   987 	
   988 		wl_signal_add(&wlr_subsurface->events.destroy, &subsurface->destroy);
(lldb) up
frame #2: 0x00005555555c3c2a sway`view_child_handle_surface_new_subsurface(listener=0x00005555564a1130, data=0x0000555556586910) at view.c:1031:2
   1028		struct sway_view_child *child =
   1029			wl_container_of(listener, child, surface_new_subsurface);
   1030		struct wlr_subsurface *subsurface = data;
-> 1031		view_child_subsurface_create(child, subsurface);
   1032	}
   1033	
   1034	static void view_child_handle_surface_destroy(struct wl_listener *listener,
(lldb) up
frame #3: 0x00007ffff78f4bfe libwlroots.so.10`wlr_signal_emit_safe(signal=0x00005555565b2470, data=0x0000555556586910) at signal.c:29:3
   26  			wl_list_remove(&cursor.link);
   27  			wl_list_insert(pos, &cursor.link);
   28  	
-> 29  			l->notify(l, data);
   30  		}
   31  	
   32  		wl_list_remove(&cursor.link);
(lldb) up
frame #4: 0x00007ffff78e5a41 libwlroots.so.10`subsurface_parent_commit(subsurface=0x0000555556586910) at wlr_surface.c:517:3
   514 	
   515 		if (!subsurface->added) {
   516 			subsurface->added = true;
-> 517 			wlr_signal_emit_safe(&subsurface->parent->events.new_subsurface,
   518 				subsurface);
   519 		}
   520 	}
(lldb) up
frame #5: 0x00007ffff78e56fa libwlroots.so.10`surface_commit_state(surface=0x00005555565b21b0, next=0x00005555565b2338) at wlr_surface.c:439:3
   436 			wl_list_insert(&surface->current.subsurfaces_above,
   437 				&subsurface->current.link);
   438 	
-> 439 			subsurface_parent_commit(subsurface);
   440 		}
   441 		wl_list_for_each_reverse(subsurface, &surface->pending.subsurfaces_below,
   442 				pending.link) {
(lldb) up
frame #6: 0x00007ffff78e5b88 libwlroots.so.10`surface_handle_commit(client=0x0000555556564c80, resource=0x0000555556599a20) at wlr_surface.c:555:3
   552 		if (surface->pending.cached_state_locks > 0 || !wl_list_empty(&surface->cached)) {
   553 			surface_cache_pending(surface);
   554 		} else {
-> 555 			surface_commit_state(surface, &surface->pending);
   556 		}
   557 	}
   558 	
(lldb) up
frame #7: 0x00007ffff7000d4a libffi.so.8`___lldb_unnamed_symbol118 + 82
libffi.so.8`___lldb_unnamed_symbol118:
->  0x7ffff7000d4a <+82>: leaq   0x18(%rbp), %rsp
    0x7ffff7000d4e <+86>: movq   (%rbp), %rcx
    0x7ffff7000d52 <+90>: movq   0x8(%rbp), %rdi
    0x7ffff7000d56 <+94>: movq   0x10(%rbp), %rbp
(lldb) up
frame #8: 0x00007ffff7000267 libffi.so.8`___lldb_unnamed_symbol115 + 439
libffi.so.8`___lldb_unnamed_symbol115:
->  0x7ffff7000267 <+439>: movq   -0x38(%rbp), %rax
    0x7ffff700026b <+443>: subq   %fs:0x28, %rax
    0x7ffff7000274 <+452>: jne    0x7ffff70004e7            ; <+1079>
    0x7ffff700027a <+458>: leaq   -0x28(%rbp), %rsp
(lldb) up
frame #9: 0x00007ffff795a173 libwayland-server.so.0`___lldb_unnamed_symbol271 + 371
libwayland-server.so.0`___lldb_unnamed_symbol271:
->  0x7ffff795a173 <+371>: movq   0x8(%r12), %rax
    0x7ffff795a178 <+376>: movq   0x8(%rax), %rdi
    0x7ffff795a17c <+380>: movl   (%r12), %eax
    0x7ffff795a180 <+384>: testl  %eax, %eax
(lldb) up
frame #10: 0x00007ffff795555c libwayland-server.so.0`___lldb_unnamed_symbol210 + 588
libwayland-server.so.0`___lldb_unnamed_symbol210:
->  0x7ffff795555c <+588>: jmp    0x7ffff7955435            ; <+293>
    0x7ffff7955561 <+593>: nopl   (%rax)
    0x7ffff7955568 <+600>: callq  *0xd76a(%rip)
    0x7ffff795556e <+606>: cmpl   $0xb, (%rax)
(lldb) up
frame #11: 0x00007ffff795804a libwayland-server.so.0`wl_event_loop_dispatch + 202
libwayland-server.so.0`wl_event_loop_dispatch:
->  0x7ffff795804a <+202>: addq   $0xc, %r15
    0x7ffff795804e <+206>: cmpq   %r15, %rbp
    0x7ffff7958051 <+209>: jne    0x7ffff7958038            ; <+184>
    0x7ffff7958053 <+211>: movq   0x8(%rsp), %rcx1
(lldb) up
frame #12: 0x00007ffff7955bc7 libwayland-server.so.0`wl_display_run + 39
libwayland-server.so.0`wl_display_run:
->  0x7ffff7955bc7 <+39>: movl   0x8(%rbx), %eax
    0x7ffff7955bca <+42>: testl  %eax, %eax
    0x7ffff7955bcc <+44>: jne    0x7ffff7955bb0            ; <+16>
    0x7ffff7955bce <+46>: popq   %rbx
(lldb) up
frame #13: 0x00005555555756eb sway`server_run(server=0x00005555555f0640) at server.c:296:2
   293 	void server_run(struct sway_server *server) {
   294 		sway_log(SWAY_INFO, "Running compositor on wayland display '%s'",
   295 				server->socket);
-> 296 		wl_display_run(server->wl_display);
   297 	}
(lldb) up
frame #14: 0x0000555555574947 sway`main(argc=1, argv=0x00007fffffffe8d8) at main.c:428:2
   425 			swaynag_show(&config->swaynag_config_errors);
   426 		}
   427 	
-> 428 		server_run(&server);
   429 	
   430 	shutdown:
   431 		sway_log(SWAY_INFO, "Shutting down sway");
(lldb) up
frame #15: 0x00007ffff761db25 libc.so.6`__libc_start_main + 213
libc.so.6`__libc_start_main:
->  0x7ffff761db25 <+213>: movl   %eax, %edi
    0x7ffff761db27 <+215>: callq  0x7ffff7635630            ; exit
    0x7ffff761db2c <+220>: movq   (%rsp), %rax
    0x7ffff761db30 <+224>: leaq   0x163929(%rip), %rdi
(lldb) up
frame #16: 0x00005555555656be sway`_start + 46
sway`_start:
->  0x5555555656be <+46>: hlt    
    0x5555555656bf:       nop    
sway`deregister_tm_clones:
    0x5555555656c0 <+0>:  leaq   0x8aeb9(%rip), %rdi       ; optind@GLIBC_2.2.5
    0x5555555656c7 <+7>:  leaq   0x8aeb2(%rip), %rax       ; optind@GLIBC_2.2.5

Signed-off-by: Alexander Orzechowski <orzechowski.alexander@gmail.com>
 		2021-12-13 14:51:13 +01:00
.builds Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
.github/ISSUE_TEMPLATE github: don't truncate debug logs 2021-10-17 21:28:51 +02:00
assets License wallpapers as CC-0 2019-12-16 14:35:58 -05:00
client cairo: Replace <cairo/cairo.h> by <cairo.h> 2021-05-10 10:28:32 +02:00
common Avoid unecessary font metric calculations 2021-09-20 09:25:47 +02:00
completions i3-compat: add GET_BINDING_STATE IPC command 2020-06-14 00:55:14 -04:00
contrib grimshot: Exit 1 on cancellation 2021-07-10 13:03:42 +02:00
include Add focused_tab_title 2021-12-10 16:09:29 +01:00
protocols build: subproject support for wayland-protocols 2021-09-08 08:19:40 +02:00
sway view: Fix null dereference 2021-12-13 14:51:13 +01:00
swaybar swaybar: signal status command's process group 2021-11-25 12:09:12 +01:00
swaymsg refactor: use JSON_MAX_DEPTH everywhere 2021-10-25 10:18:40 +02:00
swaynag swaynag: fix pointer button events on scaled outputs 2021-09-13 14:46:01 +02:00
.editorconfig Create .editorconfig 2016-07-04 14:12:32 +02:00
.gitignore Allocate minimum size necessary in pango text functions. (#3473) 2019-01-20 15:03:30 +01:00
CONTRIBUTING.md Fix IRC links in READMEs and templates 2021-05-26 08:25:13 +02:00
LICENSE MIT license 2017-01-06 13:45:48 -05:00
README.de.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.dk.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.es.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.fr.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.gr.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.hu.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.ir.md readme: use right-to-left marks in ir translation 2021-12-07 15:26:57 +01:00
README.ja.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.ko.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.nl.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.pl.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.pt.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.ro.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.ru.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.tr.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.uk.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.zh-CN.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
README.zh-TW.md Update URL to wlroots project (GitHub->GitLab) 2021-11-02 08:43:24 +01:00
config.in config.in: use swaynag -B instead of -b 2021-10-17 21:30:33 +02:00
meson.build build: use list for sdbus dep 2021-11-26 12:10:18 -06:00
meson_options.txt Add meson options to enable/disable swaybar and swaynag 2021-07-21 18:24:09 +02:00
sway.desktop Update language in sway.desktop & sway(1) 2019-03-10 15:09:52 -04:00

README.md

sway

English - 日本語 - Français - Українська - Español - Polski - 中文-简体 - Deutsch - Nederlands - Русский - 中文-繁體 - Português - Dansk - 한국어 - Română - Magyar - Türkçe - فارسی - Ελληνικά

sway is an i3-compatible Wayland compositor. Read the FAQ. Join the IRC channel (#sway on irc.libera.chat).

Release Signatures

Releases are signed with E88F5E48 and published on GitHub.

Installation

From Packages

Sway is available in many distributions. Try installing the "sway" package for yours.

Compiling from Source

Check out this wiki page if you want to build the HEAD of sway and wlroots for testing or development.

Install dependencies:

  • meson *
  • wlroots
  • wayland
  • wayland-protocols *
  • pcre
  • json-c
  • pango
  • cairo
  • gdk-pixbuf2 (optional: system tray)
  • scdoc (optional: man pages) *
  • git (optional: version info) *

* Compile-time dep

Run these commands:

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

On systems without logind nor seatd, 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).