Date: Sun, 7 Dec 2014 21:57:25 +0100 (CET) From: Wojciech Puchar <wojtek@puchar.net> To: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: freebsd crash under I/O - got error messages part 4 Message-ID: <alpine.BSF.2.11.1412072156540.11295@laptop> In-Reply-To: <alpine.BSF.2.11.1412072136220.685@laptop> References: <alpine.BSF.2.11.1412072119390.663@laptop> <alpine.BSF.2.11.1412072123460.682@laptop> <alpine.BSF.2.11.1412072136220.685@laptop>
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even without UFS_DIRHASH there are still errors under heavier I/O load. lock order reversal: 1st 0xfffff800182c9068 ufs (ufs) @ kern/vfs_subr.c:2137 2nd 0xfffffe00612443d0 bufwait (bufwait) @ ufs/ffs/ffs_vnops.c:262 3rd 0xfffff8004a877418 ufs (ufs) @ kern/vfs_subr.c:2137 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe007870ae20 kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe007870aed0 witness_checkorder() at witness_checkorder+0xdc2/frame 0xfffffe007870af60 __lockmgr_args() at __lockmgr_args+0x9ea/frame 0xfffffe007870b0a0 ffs_lock() at ffs_lock+0x84/frame 0xfffffe007870b0f0 VOP_LOCK1_APV() at VOP_LOCK1_APV+0xd9/frame 0xfffffe007870b120 _vn_lock() at _vn_lock+0xaa/frame 0xfffffe007870b190 vget() at vget+0x67/frame 0xfffffe007870b1d0 vfs_hash_get() at vfs_hash_get+0xe1/frame 0xfffffe007870b220 ffs_vgetf() at ffs_vgetf+0x40/frame 0xfffffe007870b2b0 softdep_sync_buf() at softdep_sync_buf+0x3b3/frame 0xfffffe007870b390 ffs_syncvnode() at ffs_syncvnode+0x286/frame 0xfffffe007870b410 ffs_truncate() at ffs_truncate+0x614/frame 0xfffffe007870b600 ufs_direnter() at ufs_direnter+0x722/frame 0xfffffe007870b6c0 ufs_mkdir() at ufs_mkdir+0x4d0/frame 0xfffffe007870b850 VOP_MKDIR_APV() at VOP_MKDIR_APV+0xd1/frame 0xfffffe007870b880 kern_mkdirat() at kern_mkdirat+0x1be/frame 0xfffffe007870baa0 amd64_syscall() at amd64_syscall+0x216/frame 0xfffffe007870bbb0 Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe007870bbb0 --- syscall (136, FreeBSD ELF64, sys_mkdir), rip = 0x800c0e93a, rsp = 0x7fffffffd3f8, rbp = 0x7fffffffd520 ---
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