[Bug]: Crash with 1.8.3 last version

[RobertusIT]

Describe the bug

Crash randomly about teldrive docker.

Repoduction

random

Expected behavior

not crash

Version

1.8.3 last

Which Platform are you using?

Linux

Additional context

panic: runtime error: slice bounds out of range [:36965] with capacity 0

goroutine 240 [running]:
github.com/tgdrive/teldrive/internal/reader.(*tgMultiReader).fillBatch.func1()
github.com/tgdrive/teldrive/internal/reader/tg_reader.go:186 +0x378
golang.org/x/sync/errgroup.(*Group).Go.func1()
golang.org/x/sync@v0.19.0/errgroup/errgroup.go:93 +0x50
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 287
golang.org/x/sync@v0.19.0/errgroup/errgroup.go:78 +0x95
panic: runtime error: slice bounds out of range [36864:0]

goroutine 239 [running]:
github.com/tgdrive/teldrive/internal/reader.(*tgMultiReader).fillBatch.func1()
github.com/tgdrive/teldrive/internal/reader/tg_reader.go:184 +0x37d
golang.org/x/sync/errgroup.(*Group).Go.func1()
golang.org/x/sync@v0.19.0/errgroup/errgroup.go:93 +0x50
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 287
golang.org/x/sync@v0.19.0/errgroup/errgroup.go:78 +0x95

[RobertusIT]

another:

panic: runtime error: index out of range [2] with length 2

goroutine 101 [running]:
github.com/tgdrive/teldrive/internal/reader.(*Reader).getPartReader(0x3f515e0?)
github.com/tgdrive/teldrive/internal/reader/reader.go:136 +0x498
github.com/tgdrive/teldrive/internal/reader.(*Reader).initializeReader(...)
github.com/tgdrive/teldrive/internal/reader/reader.go:117
github.com/tgdrive/teldrive/internal/reader.NewReader({0x28983e0, 0x255eb79b3350}, 0x255eb7c04e20, {0x2898450, 0x255eb7ac28a0}, 0x255eb79959a0, {0x255ebaf244b0, 0x2, 0x2}, 0x10606c000, ...)
github.com/tgdrive/teldrive/internal/reader/reader.go:82 +0x3d6
github.com/tgdrive/teldrive/pkg/services.(*extendedService).FilesStream.func2()
github.com/tgdrive/teldrive/pkg/services/file.go:972 +0x165
github.com/tgdrive/teldrive/pkg/services.(*extendedService).FilesStream.func3({0x2897e50?, 0x255ebaf804b0?})
github.com/tgdrive/teldrive/pkg/services/file.go:1002 +0x13
github.com/tgdrive/teldrive/pkg/services.(*extendedService).FilesStream.RunWithAuth.func4({0x2897e50, 0x255ebaf804b0})
github.com/tgdrive/teldrive/internal/tgc/run.go:17 +0x51
github.com/gotd/td/telegram.(*Client).Run.func3({0x2897e50, 0x255ebaf804b0})
github.com/gotd/td@v0.136.0/telegram/connect.go:173 +0xb6
github.com/gotd/td/telegram.(*Client).Run.(*CancellableGroup).Go.func6()
github.com/gotd/td@v0.136.0/tdsync/cancel_group.go:48 +0x23
golang.org/x/sync/errgroup.(*Group).Go.func1()
golang.org/x/sync@v0.19.0/errgroup/errgroup.go:93 +0x50
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 64
golang.org/x/sync@v0.19.0/errgroup/errgroup.go:78 +0x95

and

panic: runtime error: index out of range [2] with length 2

goroutine 100 [running]:
github.com/tgdrive/teldrive/internal/reader.(*Reader).getPartReader(0x3f515e0?)
github.com/tgdrive/teldrive/internal/reader/reader.go:136 +0x498
github.com/tgdrive/teldrive/internal/reader.(*Reader).initializeReader(...)
github.com/tgdrive/teldrive/internal/reader/reader.go:117
github.com/tgdrive/teldrive/internal/reader.NewReader({0x28983e0, 0x2c56642ce2a0}, 0x2c5663ed9970, {0x2898450, 0x2c5664342030}, 0x2c566407b220, {0x2c56677de320, 0x2, 0x2}, 0x10606c000, ...)
github.com/tgdrive/teldrive/internal/reader/reader.go:82 +0x3d6
github.com/tgdrive/teldrive/pkg/services.(*extendedService).FilesStream.func2()
github.com/tgdrive/teldrive/pkg/services/file.go:972 +0x165
github.com/tgdrive/teldrive/pkg/services.(*extendedService).FilesStream.func3({0x2897e50?, 0x2c5667682190?})
github.com/tgdrive/teldrive/pkg/services/file.go:1002 +0x13
github.com/tgdrive/teldrive/pkg/services.(*extendedService).FilesStream.RunWithAuth.func4({0x2897e50, 0x2c5667682190})
github.com/tgdrive/teldrive/internal/tgc/run.go:17 +0x51
github.com/gotd/td/telegram.(*Client).Run.func3({0x2897e50, 0x2c5667682190})
github.com/gotd/td@v0.136.0/telegram/connect.go:173 +0xb6
github.com/gotd/td/telegram.(*Client).Run.(*CancellableGroup).Go.func6()
github.com/gotd/td@v0.136.0/tdsync/cancel_group.go:48 +0x23
golang.org/x/sync/errgroup.(*Group).Go.func1()
golang.org/x/sync@v0.19.0/errgroup/errgroup.go:93 +0x50
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 25
golang.org/x/sync@v0.19.0/errgroup/errgroup.go:78 +0x95

[RobertusIT]

another crash, is possible to fix?

panic: runtime error: slice bounds out of range [36864:0]

goroutine 204813 [running]:
github.com/tgdrive/teldrive/internal/reader.(*tgMultiReader).fillBatch.func1()
        github.com/tgdrive/teldrive/internal/reader/tg_reader.go:184 +0x37d
golang.org/x/sync/errgroup.(*Group).Go.func1()
        golang.org/x/sync@v0.19.0/errgroup/errgroup.go:93 +0x50
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 204843
        golang.org/x/sync@v0.19.0/errgroup/errgroup.go:78 +0x95

[D0nnieD4rk0]

looks like a docker issue, less so a project issue. go ahead and download a binary from the releases tab and just run that instead. have the config.toml in same folder and it should just work. less hassles in general

[RobertusIT]

looks like a docker issue, less so a project issue. go ahead and download a binary from the releases tab and just run that instead. have the config.toml in same folder and it should just work. less hassles in general

Hi,

thanks to reply, but is not a docker issue.

I tried right now and same issue.

panic: runtime error: index out of range [0] with length 0

goroutine 7164 [running]:
github.com/tgdrive/teldrive/internal/reader.NewLinearReader({0x2833f90?, 0xc005ae1bc0?}, 0xff?, {0x2831350?, 0xc0002b8180?}, 0x3a2df80?, {0x3a50080?, 0x0?, 0x20c0656?}, 0x0, ...)
github.com/tgdrive/teldrive/internal/reader/reader.go:62 +0x44f
github.com/tgdrive/teldrive/pkg/services.(*extendedService).FilesStream.func2()
github.com/tgdrive/teldrive/pkg/services/file.go:848 +0x135
github.com/tgdrive/teldrive/pkg/services.(*extendedService).FilesStream.func3({0x20baf8f?, 0x20c0656?})
github.com/tgdrive/teldrive/pkg/services/file.go:865 +0x13
github.com/tgdrive/teldrive/pkg/services.(*extendedService).FilesStream.RunWithAuth.func8({0x2833af0, 0xc004183720})
github.com/tgdrive/teldrive/internal/tgc/run.go:40 +0x5a4
github.com/gotd/td/telegram.(*Client).Run.func3({0x2833af0, 0xc004183720})
github.com/gotd/td@v0.132.0/telegram/connect.go:173 +0xb4
github.com/gotd/td/telegram.(*Client).Run.(*CancellableGroup).Go.func6()
github.com/gotd/td@v0.132.0/tdsync/cancel_group.go:48 +0x23
golang.org/x/sync/errgroup.(*Group).Go.func1()
golang.org/x/sync@v0.17.0/errgroup/errgroup.go:93 +0x50
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 7184
golang.org/x/sync@v0.17.0/errgroup/errgroup.go:78 +0x95

[RobertusIT]

uploading this:

2026-08-25 14:49:36  ✗  ERROR  [UPLOAD] upload.failed  file_name=Myfile.mkv part_name=fa036ec6f5820af6c067ab4a5f0a0a3d part_no=1 size=1879048192 file_name=Myfile.mkv part_name=fa036ec6f5820af6c067ab4a5f0a0a3d part_no=1 error=group: task readLoop: read: read: read intermediate: read length: EOF
2026-08-25 14:49:36  ✗  ERROR  [API] request.failed  error=group: task readLoop: read: read: read intermediate: read length: EOF
2026-08-25 14:49:36  ✗  ERROR  [HTTP]   status=500 method=POST path=/api/uploads/49fa317de287b08802a2608cf76b0ece query=channelId=0&encrypted=true&fileName=Myfile.mkv&hashing=true&partName=fa036ec6f5820af6c067ab4a5f0a0a3d&partNo=1 ip=127.0.0.1:64436 latency=15m28.3439909s user-agent=rclone/v1.73.1 request_size=1879048192 response_size=46

and crash like this:

panic: runtime error: slice bounds out of range [:37775] with capacity 0

goroutine 175822 [running]:
github.com/tgdrive/teldrive/internal/reader.(*tgMultiReader).fillBatch.func1()
        github.com/tgdrive/teldrive/internal/reader/tg_reader.go:186 +0x378
golang.org/x/sync/errgroup.(*Group).Go.func1()
        golang.org/x/sync@v0.19.0/errgroup/errgroup.go:93 +0x50
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 175890
        golang.org/x/sync@v0.19.0/errgroup/errgroup.go:78 +0x95

became impossible to use it

[acdcjavier]

Hi
I got a similar issue to try to add new bots:

2026-08-31 18:07:48  ✗  ERROR  [TG] auth.bot_failed  error=context canceled
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x1b1d581]

goroutine 303 [running]:
github.com/tgdrive/teldrive/internal/tgc.GetBotInfo({0x2897e50, 0x997c3052aa0}, 0x997c25db410, {0x2898450, 0x997c25da630}, 0x997c22b6130, {0x997c21d6ff0, 0x2e})
	github.com/tgdrive/teldrive/internal/tgc/helpers.go:207 +0x261
github.com/tgdrive/teldrive/internal/tgc.(*ChannelManager).AddBotsToChannel.func1.1.1()
	github.com/tgdrive/teldrive/internal/tgc/channel_manager.go:280 +0x6f
github.com/cenkalti/backoff/v4.RetryNotifyWithTimer.Operation.withEmptyData.func1()
	github.com/cenkalti/backoff/v4@v4.3.0/retry.go:18 +0x13
github.com/cenkalti/backoff/v4.doRetryNotify[...](0x997c3091e78?, {0x28908a8, 0x997c2770c00}, 0x0, {0x0, 0x0?})
	github.com/cenkalti/backoff/v4@v4.3.0/retry.go:88 +0x11c
github.com/cenkalti/backoff/v4.RetryNotifyWithTimer(0x0?, {0x28908a8?, 0x997c2770c00?}, 0x0?, {0x0?, 0x0?})
	github.com/cenkalti/backoff/v4@v4.3.0/retry.go:61 +0x56
github.com/cenkalti/backoff/v4.RetryNotify(...)
	github.com/cenkalti/backoff/v4@v4.3.0/retry.go:49
github.com/tgdrive/teldrive/internal/tgc.(*ChannelManager).AddBotsToChannel.func1.1()
	github.com/tgdrive/teldrive/internal/tgc/channel_manager.go:278 +0x145
golang.org/x/sync/errgroup.(*Group).Go.func1()
	golang.org/x/sync@v0.19.0/errgroup/errgroup.go:93 +0x50
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 271
	golang.org/x/sync@v0.19.0/errgroup/errgroup.go:78 +0x95

[acdcjavier]

Is it project abandoned?

[yatin-ys]

Is it project abandoned?

I don't think so. There’s another branch, v2, that’s being pushed to frequently, so I guess the maintainer is still working on it.

[RobertusIT]

Is it project abandoned?

I don't think so. There’s another branch, v2, that’s being pushed to frequently, so I guess the maintainer is still working on it.

But I guess is in beta, so better to don't tr for now, and I guess that is not fixed this issue