[bug] uters/routes/base.go:153:1() [E] PANIC: runtime error: invalid memory address or nil pointer dereference

[eveslage]

• Gitea version (or commit ref): 1.14.1
• Git version: 2.29.2
• Operating system:
  debian buster
• Database (use [x]):
  • MySQL
• Can you reproduce the bug at https://try.gitea.io:
  • No
• Log gist:
  2021/04/20 18:15:28 ...uters/routes/base.go:153:1() [E] PANIC: runtime error: invalid memory address or nil pointer dereference
  /usr/local/go/src/runtime/panic.go:212 (0x43de1a)
  /usr/local/go/src/runtime/signal_unix.go:734 (0x457b72)
  /source/models/user.go:1465 (0x1506c66)
  /source/routers/repo/commit.go:362 (0x2084bb5)
  /source/modules/web/route.go:53 (0x1f7de6b)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/vendor/github.com/go-chi/chi/mux.go:436 (0x1b3720a)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/modules/web/route.go:92 (0x1f7e3d6)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/modules/web/route.go:92 (0x1f7e3d6)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/modules/web/route.go:92 (0x1f7e3d6)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/vendor/github.com/go-chi/chi/middleware/get_head.go:37 (0x21ad921)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/modules/context/context.go:704 (0x1b563a1)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/routers/routes/base.go:94 (0x21b4d21)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/routers/routes/base.go:94 (0x21b4d21)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/modules/public/public.go:86 (0x13f4947)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/modules/public/public.go:86 (0x13f4947)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/routers/routes/base.go:199 (0x21b6910)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/vendor/gitea.com/go-chi/session/session.go:256 (0x154682e)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/vendor/github.com/go-chi/chi/mux.go:70 (0x1b34d6a)
  /source/vendor/github.com/go-chi/chi/mux.go:311 (0x1b3b15b)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/vendor/github.com/go-chi/chi/mux.go:436 (0x1b3720a)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/routers/routes/web.go:110 (0x21b7d5d)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/routers/routes/base.go:38 (0x21b399b)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/vendor/github.com/go-chi/chi/middleware/strip.go:30 (0x21ae227)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/vendor/github.com/chi-middleware/proxy/middleware.go:37 (0x21a988e)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/routers/routes/web.go:66 (0x21b789c)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /source/vendor/github.com/go-chi/chi/mux.go:87 (0x1b34af0)
  /source/modules/web/route.go:268 (0x1f7d3b3)
  /source/vendor/github.com/gorilla/context/context.go:141 (0x11b4b53)
  /usr/local/go/src/net/http/server.go:2069 (0x7bd0c3)
  /usr/local/go/src/net/http/server.go:2887 (0x7c0682)
  /usr/local/go/src/net/http/server.go:1952 (0x7bbbac)
  /usr/local/go/src/runtime/asm_amd64.s:1371 (0x47a4e0)

Description

getting a 500 error when opening a commit of a fairly large repo

git gc, git fsck all done, no issues detected

[zeripath]

The panic is coming from:

gitea/models/user.go

Line 1465 in 990c608

if c.Author == nil {

Implying that the c passed in is nil

That comes from L362:

gitea/routers/repo/commit.go

Lines 357 to 363 in 990c608

	note := &git.Note{}
	err = git.GetNote(ctx.Repo.GitRepo, commitID, note)
	if err == nil {
	ctx.Data["Note"] = string(charset.ToUTF8WithFallback(note.Message))
	ctx.Data["NoteCommit"] = note.Commit
	ctx.Data["NoteAuthor"] = models.ValidateCommitWithEmail(note.Commit)
	}

Which implies that the problem is in git.GetNote(...)

Are you using the go-git variant or plain git variant?

[eveslage]

tbh, I am not sure. I installed gitea as binary from the official repository. How would I notice the difference?

[zeripath]

No problem so this is a bug in the native git backend then.

Would it be possible to try the following patch?

From 88f39bfc3f9e139450cbfc1b88f054efe5c26362 Mon Sep 17 00:00:00 2001
From: Andrew Thornton <art27@cantab.net>
Date: Tue, 20 Apr 2021 21:12:30 +0100
Subject: [PATCH] Fix NPE on view commit with notes

Fix #15558

Signed-off-by: Andrew Thornton <art27@cantab.net>
---
 modules/git/notes_nogogit.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/modules/git/notes_nogogit.go b/modules/git/notes_nogogit.go
index 613efd2e0..1379e5085 100644
--- a/modules/git/notes_nogogit.go
+++ b/modules/git/notes_nogogit.go
@@ -8,6 +8,7 @@ package git
 
 import (
 	"io/ioutil"
+	"strings"
 )
 
 // GetNote retrieves the git-notes data for a given commit.
@@ -49,7 +50,13 @@ func GetNote(repo *Repository, commitID string, note *Note) error {
 	}
 	note.Message = d
 
-	lastCommits, err := GetLastCommitForPaths(notes, "", []string{path})
+	treePath := ""
+	if idx := strings.LastIndex(path, "/"); idx > -1 {
+		treePath = path[:idx]
+		path = path[idx+1:]
+	}
+
+	lastCommits, err := GetLastCommitForPaths(notes, treePath, []string{path})
 	if err != nil {
 		return err
 	}
-- 
2.25.1

[eveslage]

Do I have to build gitea for source to try out the patch?

[zeripath]

yes - but I can build a v1.14.x version for you if you tell me which architecture you need

[eveslage]

That would be nice. It's Debian buster x64

[zeripath]

temporary build is up at https://eldritchkitty.com/~andrew/gitea-v1.14.x-15558-linux-amd64.gz

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is a signature for the gz file.

gunzip it once you've got it.

[eveslage]

I will try the build tomorrow and keep you updated. Thanks

[eveslage]

fix confirmed, thanks for the quick help

[6543]

keep it open until it got merged :)