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base repository: SagerNet/sing-tun
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head repository: itinghub/sing-tun
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compare: dev
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  • 1 commit
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Commits on Feb 11, 2026

  1. fix: treat EBADF/ENOTSOCK as closed in darwin BatchRead 

    During service reload (e.g. routing mode switch), NativeTun.Close()
calls stopFd.Stop() then tunFile.Close(). If the batchLoopDarwin
goroutine is actively processing packets (not blocked in kqueue),
SYS_RECVMSG_X hits the closed fd and returns EBADF. Since EBADF
bypasses the stopFd check path in BlockingRecvMMsgUntilStopped
(returned as n=0, errno=EBADF), BatchRead returns raw EBADF which
E.IsClosed() does not recognize, causing an infinite error loop
with ~30k log lines/sec.

Map EBADF and ENOTSOCK to os.ErrClosed in BatchRead so
batchLoopDarwin exits cleanly.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
    @dazuiba @claude
    dazuiba and claude committed Feb 11, 2026
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