Date: Mon, 25 Jun 2012 11:21:51 +0200 (CEST) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: freebsd-hackers@freebsd.org Subject: Re: reason for "magic" crashes. Message-ID: <alpine.BSF.2.00.1206251117500.78020@wojtek.tensor.gdynia.pl> In-Reply-To: <20120624190853.GB15899@dft-labs.eu> References: <20120623162415.303430@gmx.com> <alpine.BSF.2.00.1206231947160.40095@wojtek.tensor.gdynia.pl> <alpine.BSF.2.00.1206241856090.73001@wojtek.tensor.gdynia.pl> <20120624180526.GA15899@dft-labs.eu> <alpine.BSF.2.00.1206242049230.73675@wojtek.tensor.gdynia.pl> <20120624190853.GB15899@dft-labs.eu>
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thanks first for all suggestions. Now the (not really)funny part begins. After turning on all this checks in kernel the system crashes repeatable even before ending fully bootstrap sequence. Before this i've got tons of warning about lock order reversal. On seems strange as it is lock order reversal: 1st 0xffffff80f5c4ba80 bufwait (bufwait) @ kern/vfs_bio.c:2636 2nd 0xffffff0005cb0600 dirhash (dirhash) @ ufs/ufs/ufs_dirhash.c:285 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x2e witness_checkorder() at witness_checkorder+0x80a _sx_xlock() at _sx_xlock+0x5d ufsdirhash_acquire() at ufsdirhash_acquire+0x33 ufsdirhash_remove() at ufsdirhash_remove+0x16 ufs_dirremove() at ufs_dirremove+0x181 ufs_remove() at ufs_remove+0x85 VOP_REMOVE_APV() at VOP_REMOVE_APV+0x93 kern_unlinkat() at kern_unlinkat+0x211 amd64_syscall() at amd64_syscall+0x2e0 Xfast_syscall() at Xfast_syscall+0xfc --- syscall (10, FreeBSD ELF64, unlink), rip = 0xeede070c, rsp = 0x7fffffffdb08, rbp = 0x7fffffffef58 --- every now and then when files are deleted. The rest seems to be a problem with not really good and it sync 3-rd party kernel addons. After fixing that part i would post again. Still - what may be a cause of this messages?
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