Crashes with DEADLOCK error when launched using --debug option

[gurjeet]

Describe the bug

lazygit crashes when run with the --debug output.

It happened twice, and I have the partial logs from only one of the instances; other logs were overwritten by my next execution of lazygit.

To Reproduce

Steps to reproduce the behavior:

$ lazygit --debug
POTENTIAL DEADLOCK: Inconsistent locking. saw this ordering in one goroutine:
happened before
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:453 helpers.(*RefreshHelper).refreshBranches ??? <<<<<
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:452 helpers.(*RefreshHelper).refreshBranches ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:130 helpers.(*RefreshHelper).Refresh.func2.3 ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:114 helpers.(*RefreshHelper).Refresh.func2.1.2 ???
github.com/jesseduffield/lazygit/pkg/utils/utils.go:68 helpers.(*RefreshHelper).Refresh.func2.1.gowrap1.Safe.1 ???
github.com/jesseduffield/lazygit/pkg/utils/utils.go:81 utils.SafeWithError ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:110 helpers.(*RefreshHelper).Refresh.func2.1.gowrap1 ???

happened after
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:705 helpers.(*RefreshHelper).refreshStatus ??? <<<<<
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:704 helpers.(*RefreshHelper).refreshStatus ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:504 helpers.(*RefreshHelper).refreshBranches ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:130 helpers.(*RefreshHelper).Refresh.func2.3 ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:114 helpers.(*RefreshHelper).Refresh.func2.1.2 ???
github.com/jesseduffield/lazygit/pkg/utils/utils.go:68 helpers.(*RefreshHelper).Refresh.func2.1.gowrap1.Safe.1 ???
github.com/jesseduffield/lazygit/pkg/utils/utils.go:81 utils.SafeWithError ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:110 helpers.(*RefreshHelper).Refresh.func2.1.gowrap1 ???

in another goroutine: happened before
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:705 helpers.(*RefreshHelper).refreshStatus ??? <<<<<
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:704 helpers.(*RefreshHelper).refreshStatus ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:190 helpers.(*RefreshHelper).Refresh.func2 ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:206 helpers.(*RefreshHelper).Refresh ???
github.com/jesseduffield/lazygit/pkg/gui/gui.go:352 gui.(*Gui).onNewRepo.func1 ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/gui.go:869 gocui.(*Gui).handleEvent ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/gui.go:869 gocui.(*Gui).handleEvent ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/gui.go:816 gocui.(*Gui).processEvent ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/gui.go:796 gocui.(*Gui).MainLoop ???
github.com/jesseduffield/lazygit/pkg/gui/gui.go:857 gui.(*Gui).Run ???
github.com/jesseduffield/lazygit/pkg/gui/gui.go:863 gui.(*Gui).RunAndHandleError.func1 ???
github.com/jesseduffield/lazygit/pkg/utils/utils.go:81 utils.SafeWithError ???
github.com/jesseduffield/lazygit/pkg/gui/gui.go:862 gui.(*Gui).RunAndHandleError ???
github.com/jesseduffield/lazygit/pkg/app/app.go:50 app.Run ???
github.com/jesseduffield/lazygit/pkg/app/app.go:47 app.Run ???
github.com/jesseduffield/lazygit/pkg/app/entry_point.go:172 app.Start ???
github.com/jesseduffield/lazygit/main.go:23 main.main ???
internal/runtime/atomic/types.go:193 atomic.(*Uint32).Load ???

happened after
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:453 helpers.(*RefreshHelper).refreshBranches ??? <<<<<
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:452 helpers.(*RefreshHelper).refreshBranches ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:130 helpers.(*RefreshHelper).Refresh.func2.3 ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:106 helpers.(*RefreshHelper).Refresh.func2.1.1 ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/gui.go:722 gocui.(*Gui).onWorkerAux ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/task.go:22 gocui.(*TaskImpl).Done ???

Other goroutines holding locks:
<output truncated>

Expected behavior

The TUI should not crash.

Screenshots

None.

Version info:

$ which git lazygit
/opt/homebrew/bin/git
/opt/homebrew/bin/lazygit

$ lazygit --version
commit=, build date=, build source=Homebrew, version=0.55.1, os=darwin, arch=arm64, git version=2.50.0

$ git --version
git version 2.50.0

Additional context

Git and lazygit are installed using Homebrew.

[gurjeet]

The very next execution of the command after I created this bug crashed, so below is the complete output from that crash. I was also running lazygit --logs command in the other terminal, so the relevant section from that is also pasted below.

$ lazygit --debug
POTENTIAL DEADLOCK: Inconsistent locking. saw this ordering in one goroutine:
happened before
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:318 helpers.(*RefreshHelper).refreshCommitsWithLimit ??? <<<<<
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:317 helpers.(*RefreshHelper).refreshCommitsWithLimit ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:273 helpers.(*RefreshHelper).refreshCommitsAndCommitFiles ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:106 helpers.(*RefreshHelper).Refresh.func2.1.1 ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/gui.go:722 gocui.(*Gui).onWorkerAux ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/task.go:22 gocui.(*TaskImpl).Done ???

happened after
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:453 helpers.(*RefreshHelper).refreshBranches ??? <<<<<
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:452 helpers.(*RefreshHelper).refreshBranches ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:130 helpers.(*RefreshHelper).Refresh.func2.3 ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:106 helpers.(*RefreshHelper).Refresh.func2.1.1 ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/gui.go:722 gocui.(*Gui).onWorkerAux ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/task.go:22 gocui.(*TaskImpl).Done ???

in another goroutine: happened before
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:453 helpers.(*RefreshHelper).refreshBranches ??? <<<<<
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:452 helpers.(*RefreshHelper).refreshBranches ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:130 helpers.(*RefreshHelper).Refresh.func2.3 ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:106 helpers.(*RefreshHelper).Refresh.func2.1.1 ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/gui.go:722 gocui.(*Gui).onWorkerAux ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/task.go:22 gocui.(*TaskImpl).Done ???

happened after
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:500 helpers.(*RefreshHelper).refreshBranches ??? <<<<<
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:499 helpers.(*RefreshHelper).refreshBranches ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:130 helpers.(*RefreshHelper).Refresh.func2.3 ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:106 helpers.(*RefreshHelper).Refresh.func2.1.1 ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/gui.go:722 gocui.(*Gui).onWorkerAux ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/task.go:22 gocui.(*TaskImpl).Done ???

Other goroutines holding locks:
goroutine 0 lock 0x1400003329c
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:453 helpers.(*RefreshHelper).refreshBranches ??? <<<<<
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:452 helpers.(*RefreshHelper).refreshBranches ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:130 helpers.(*RefreshHelper).Refresh.func2.3 ???
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/refresh_helper.go:106 helpers.(*RefreshHelper).Refresh.func2.1.1 ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/gui.go:722 gocui.(*Gui).onWorkerAux ???
github.com/jesseduffield/gocui@v0.3.1-0.20250711082438-4aa4fd0b4d22/task.go:22 gocui.(*TaskImpl).Done ???

Relevant section from lazygit --logs

Oct 23 12:53:22 |DEBU| RunCommand command="git --version"
Oct 23 12:53:22 |INFO| git --version (10.127375ms)
Oct 23 12:53:22 |DEBU| RunCommand command="git -C /Users/gurjeet.singh/Workspace/redacted rev-parse --path-format=absolute --show-toplevel --absolute-git-dir --git-common-dir --is-bare-repository --show-superproject-working-tree"
Oct 23 12:53:22 |INFO| git -C /Users/gurjeet.singh/Workspace/redacted rev-parse --path-format=absolute --show-toplevel --absolute-git-dir --git-common-dir --is-bare-repository --show-superproject-working-tree (25.434375ms)
Oct 23 12:53:22 |DEBU| RunCommand command="git -C /Users/gurjeet.singh/Workspace/redacted rev-parse --path-format=absolute --show-toplevel --absolute-git-dir --git-common-dir --is-bare-repository --show-superproject-working-tree"
Oct 23 12:53:22 |INFO| git -C /Users/gurjeet.singh/Workspace/redacted rev-parse --path-format=absolute --show-toplevel --absolute-git-dir --git-common-dir --is-bare-repository --show-superproject-working-tree (20.791416ms)
Oct 23 12:53:22 |INFO| starting main loop
Oct 23 12:53:22 |INFO| Binary is not built with the buildBinary flag so we won't check for an update
Oct 23 12:53:22 |INFO| refreshing all scopes in async mode
Oct 23 12:53:22 |INFO| Refresh took 34.416µs
Oct 23 12:53:22 |DEBU| RunCommand command="git fetch --all --no-write-fetch-head"
Oct 23 12:53:22 |DEBU| RunCommand command="git tag --list -n --sort=-creatordate"
Oct 23 12:53:22 |DEBU| RunCommand command="git branch --show-current"
Oct 23 12:53:22 |DEBU| RunCommand command="git for-each-ref --sort=-committerdate --format=%(HEAD)%00%(refname:short)%00%(upstream:short)%00%(upstream:track)%00%(push:track)%00%(subject)%00%(objectname)%00%(committerdate:unix) refs/heads"
Oct 23 12:53:22 |DEBU| RunCommand command="git stash list -z --pretty=%H|%ct|%gs"
Oct 23 12:53:23 |INFO| git branch --show-current (12.41725ms)
Oct 23 12:53:23 |DEBU| RunCommand command="git rev-parse --symbolic-full-name main@{u}"
Oct 23 12:53:23 |DEBU| RunCommand command="git rev-parse --symbolic-full-name master@{u}"
Oct 23 12:53:23 |DEBU| Error getting git config value for key: rebase.updateRefs. Error: the key is not found for [git config --get --null rebase.updateRefs]
Oct 23 12:53:23 |INFO| git rev-parse --symbolic-full-name main@{u} (17.151792ms)
Oct 23 12:53:23 |INFO| git tag --list -n --sort=-creatordate (30.002584ms)
Oct 23 12:53:23 |INFO| postRefreshUpdate for tags took 8.125µs
Oct 23 12:53:23 |INFO| git stash list -z --pretty=%H|%ct|%gs (30.430291ms)
Oct 23 12:53:23 |INFO| postRefreshUpdate for stash took 4.417µs
Oct 23 12:53:23 |ERRO| fatal: no such branch: 'master'
 command="git rev-parse --symbolic-full-name master@{u}"
Oct 23 12:53:23 |INFO| git rev-parse --symbolic-full-name master@{u} (18.566ms)
Oct 23 12:53:23 |DEBU| RunCommand command="git rev-parse --verify --quiet refs/remotes/origin/master"
Oct 23 12:53:23 |DEBU| RunCommand command="git status --untracked-files=no --porcelain -z --find-renames=50%"
Oct 23 12:53:23 |ERRO| <no msg> command="git rev-parse --verify --quiet refs/remotes/origin/master"
Oct 23 12:53:23 |INFO| git rev-parse --verify --quiet refs/remotes/origin/master (7.387417ms)
Oct 23 12:53:23 |DEBU| RunCommand command="git rev-parse --verify --quiet refs/heads/master"
Oct 23 12:53:23 |ERRO| <no msg>
Oct 23 12:53:23 |INFO| git rev-parse --verify --quiet refs/heads/master (7.614208ms)
Oct 23 12:53:23 |DEBU| RunCommand command="git rev-list refs/heads/main ^main@{u} ^refs/remotes/origin/main"
Oct 23 12:53:23 |DEBU| RunCommand command="git rev-list HEAD ^refs/remotes/origin/main"
Oct 23 12:53:23 |INFO| git for-each-ref --sort=-committerdate --format=%(refname) refs/remotes (48.00675ms)
Oct 23 12:53:23 |INFO| postRefreshUpdate for remotes took 210.791µs
Oct 23 12:53:23 |INFO| postRefreshUpdate for remoteBranches took 6.625µs
Oct 23 12:53:23 |INFO| git for-each-ref --sort=-committerdate --format=%(HEAD)%00%(refname:short)%00%(upstream:short)%00%(upstream:track)%00%(push:track)%00%(subject)%00%(objectname)%00%(committerdate:unix) refs/heads (48.893417ms)
Oct 23 12:53:23 |DEBU| RunCommand command="git worktree list --porcelain"
Oct 23 12:53:23 |INFO| git rev-list refs/heads/main ^main@{u} ^refs/remotes/origin/main (9.800667ms)
Oct 23 12:53:23 |INFO| git rev-list HEAD ^refs/remotes/origin/main (9.89025ms)
Oct 23 12:53:23 |INFO| git worktree list --porcelain (8.0775ms)
Oct 23 12:53:23 |DEBU| RunCommand command="git -C /Users/gurjeet.singh/Workspace/redacted rev-parse --path-format=absolute --absolute-git-dir"
Oct 23 12:53:23 |DEBU| RunCommand command="git -C /Users/gurjeet.singh/Workspace/redacted rev-parse --path-format=absolute --absolute-git-dir"
Oct 23 12:53:23 |INFO| git log HEAD --topo-order --oneline --pretty=format:+%H%x00%at%x00%aN%x00%ae%x00%P%x00%m%x00%D%x00%s --abbrev=40 -300 --no-show-signature -- (45.97ms)
Oct 23 12:53:23 |DEBU| using cache for key rebase.updateRefs
Oct 23 12:53:23 |INFO| git -c log.showSignature=false log -g --format=+%H%x00%ct%x00%gs%x00%P (60.32725ms)
Oct 23 12:53:23 |INFO| postRefreshUpdate for commits took 1.790084ms
Oct 23 12:53:23 |DEBU| using cache for key rebase.updateRefs
Oct 23 12:53:23 |INFO| git -C /Users/gurjeet.singh/Workspace/redacted rev-parse --path-format=absolute --absolute-git-dir (7.232458ms)
Oct 23 12:53:23 |INFO| git status --untracked-files=no --porcelain -z --find-renames=50% (33.114792ms)
Oct 23 12:53:23 |INFO| git -C /Users/gurjeet.singh/Workspace/redacted rev-parse --path-format=absolute --absolute-git-dir (7.479625ms)
Oct 23 12:53:23 |INFO| postRefreshUpdate for worktrees took 99.416µs
Oct 23 12:53:23 |INFO| postRefreshUpdate for localBranches took 877.083µs

[stefanhaller]

This is already fixed on master, just not released yet. See #4910.