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Date: Sat, 11 Nov 2006 20:54:19 -0500 (EST) From: Jon Lewis <jlewis@...is.org> To: linux-kernel@...r.kernel.org Subject: spin_trylock/spin_unlock panic in 2.6.9-42.0.3.EL I have a system running CentOS 4.4 (kernel 2.6.9-42.0.3.EL) which crashed several times in just over an hour a couple nights ago. Each time, the last messages / only indication of trouble was: net/ipv4/icmp.c:239: spin_trylock(net/core/sock.c:f7c27a60) already locked by net/ipv4/icmp.c/239 kernel panic - not syncing: net/ipv4/icmp.c:251:spin_unlock(net/core/sock.c:f7c27a60) not locked In irc, someone suggested this might be caused by bad hardware, but I have time believing that hardware going bad could cause the kernel to lose track of spinlocks, especially in exactly the same way repeatedly. The system is an old Tyan Tiger 200, single PIII-933, 1GB RAM, acting as both a mail/web server and a NAT router using the two built in Intel 825579 FE interfaces. This system has been in use and stable for several months prior to these crashes. ---------------------------------------------------------------------- Jon Lewis | I route Senior Network Engineer | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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