Date: Sat, 11 Jun 2022 21:34:40 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 264257] [tcp] Panic: Fatal trap 12: page fault while in kernel mode (if_io_tqg_4) - m_copydata ... at /usr/src/sys/kern/uipc_mbuf.c:659 Message-ID: <bug-264257-7501-cPjSONFcjC@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-264257-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-264257-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264257 --- Comment #37 from Richard Scheffenegger <rscheff@freebsd.org> --- Can you provide the vmcore (and kernel.debug) files? Or check f 10 p *tp p *tp->sackhint.nexthole p tp->snd_una + tp->t_inpcb->inp_socket->so_snd.sb_ccc p/x tp->t_flags p/x tp->t_flags2 p *tp->t_timers So far, this seems to be the signature: t_state == 8 (LAST_ACK) snd_max == snd_una + so_snd.sb_ccc + 2 (! should be one to account for the FIN) snd_fack < sackhole.end (rescue retransmission - this is new in fbsd13) t_rxtshift == 6..12 (many retransmission timeouts, indicating the client disappeared - temporarily) t_rtseq == snd_una + so_snd.sb_ccc snd_recover == snd_max (indicating the double-accounting for FIN happend prior of entering loss recovery, or "many" packets prior of the actual panic) t_flags = 0x20100274 (TF_CONGRECOVERY, TF_FASTRECOVERY, TF_SACK_PERMIT, TF_SENTFIN, TF_REQ_SCALE, TF_RCVD_SCALE, TF_NODELAY, TF_ACKNOW) -- You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.
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