[Bug 268832] panics in check_uidgid() for outgoing packets
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Date: Tue, 10 Jan 2023 11:34:15 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268832
Alexander V. Chernikov <melifaro@FreeBSD.org> changed:
What |Removed |Added
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Assignee|bugs@FreeBSD.org |net@FreeBSD.org
--- Comment #2 from Alexander V. Chernikov <melifaro@FreeBSD.org> ---
The following set of conditions leads to this:
* tcp_respond() does not propagate inpcb pointer if the connection is reset
(TH_RST)
* On the output path, ipfw_chk is called
* ipfw may run check_uidgid() to verify jail/uid/gid ruleset opcodes
* check_uidgid() performs incpb lookup, requesting read lock
* As inpcb is already write-locked, the search results in the panic
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