PuTTY bug nonexistent-channel

summary: `nonexistent channel -1' crashes
class: bug: This is clearly an actual problem we want fixed.
priority: high: This should be fixed in the next release.
present-in: 0.52 2002-03-14 2002-07-04 2002-09-07
fixed-in: 2002-09-16 0.53 (0.54) (0.55) (0.56) (0.57) (0.58) (0.59) (0.60) (0.61) (0.62)

We're getting occasional reports of PuTTY sessions dying with messages like "Server sent disconnect message: received data for nonexistent channel -1". Reports so far:

OpenSSH-1.2.3 on Debian potato, 0.52 on W2K, port forwarding "mapping port 993 to 3993" (don't know which way)
"Server sent disconnect message: received data for nonexistent channel -1"
"SSH-1.99-OpenSSH_2.9.9p2", 2002-03-14 on XP Pro
"Server sent disconnect message. Received ieof for nonexistent channel -1"

Update: We believed this fixed as of 2002 May 18 (and have had one person report that our fix made their problem go away), but we've received reports that the `ieof' variant at least is still out there (in 2002-07-04 and 2002-09-07).

OAEBLEDJOCNMIAODAMHBOEHIFDAA.ewang@collectivebid.com
015601c2567e$edff1320$ef00000a@rop (with SSH packet dump)

Update 2002-09-15: We believe the last bug of this kind has been squashed as of 2002-09-16; no-one's confirmed this, but no-one's complained either. We've also put code in which will hopefully make catching any remaining problems easier.

Audit trail for this bug.

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(last revision of this bug record was at 2004-11-16 15:27:00 +0000)