Date: Fri, 24 Mar 1995 10:47:42 -0500 From: Garrett Wollman <wollman@halloran-eldar.lcs.mit.edu> To: "Eric M. Busalacchi" <emb@herman.tiac.net> Cc: bugs@FreeBSD.org Subject: New Kernel, pppd crashing system. Message-ID: <9503241547.AA05073@halloran-eldar.lcs.mit.edu> In-Reply-To: <Pine.BSF.3.91.950324003802.443A-100000@herman.tiac.net> References: <Pine.BSF.3.91.950324003802.443A-100000@herman.tiac.net>
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<<On Fri, 24 Mar 1995 00:47:00 +0000 (), "Eric M. Busalacchi" <emb@herman.tiac.net> said: > kernel debugger, kernel tracing, and dodump, but the system chashes hard > and doesn't even go into a panic. It's in an infinite loop. If you had hit Ctl-Alt-Esc to get into the debugger, the `tr[ace]' command would have told you that you were in rn_walktree_from(). From there, you could have said `panic', which would put you back into the debugger, and then `cont' to take a crash dump. (Unfortunately, GDB for some reason would not have seen the rn_walktree_from() stack frame.) > I can't even reboot with the three > finger salute. Misconception here. Ctl-Alt-Del does NOT reboot the system. Rather, it sends a signal to the `init' program, which in FreeBSD gracefully shuts the machine down and then reboots. This is important! Ctl-Alt-Del only works in those situations where the `init' process is able to be scheduled, and therefore not when a user process has gotten stuck in the kernel. > At any rate, this is a major problem, because if the line > drops, the whole machine locks up. Any ideas? Fixed in -current. -GAWollman -- Garrett A. Wollman | Shashish is simple, it's discreet, it's brief. ... wollman@lcs.mit.edu | Shashish is the bonding of hearts in spite of distance. Opinions not those of| It is a bond more powerful than absence. We like people MIT, LCS, ANA, or NSA| who like Shashish. - Claude McKenzie + Florent Vollant
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