Date: Sun, 25 Dec 2011 05:51:05 -0800 (PST) From: Raphael Kubo da Costa <rakuco@FreeBSD.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/163608: [lor] Two seemingly vfs-related LORs Message-ID: <4ef72a49.0c5a650a.0d53.0a50@mx.google.com> Resent-Message-ID: <201112251420.pBPEK9n4029966@freefall.freebsd.org>
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>Number: 163608 >Category: kern >Synopsis: [lor] Two seemingly vfs-related LORs >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Dec 25 14:20:09 UTC 2011 >Closed-Date: >Last-Modified: >Originator: Raphael Kubo da Costa >Release: FreeBSD 8.2-STABLE amd64 >Organization: >Environment: System: FreeBSD gibbon 8.2-STABLE FreeBSD 8.2-STABLE #37: Sun Dec 25 11:10:40 BRST 2011 root@gibbon:/usr/obj/usr/src/sys/GIBBON amd64 >Description: After updating my 8-STABLE installation today, I get some LOR messages after logging in and using the machine as usual. lock order reversal: 1st 0xffffff0004957c48 filedesc structure (filedesc structure) @ /usr/src/sys/kern/kern_descrip.c:1135 2nd 0xffffff0004b0b448 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:4201 KDB: stack backtrace: db_trace_self_wrapper() at 0xffffffff801d488a = db_trace_self_wrapper+0x2a kdb_backtrace() at 0xffffffff80349e07 = kdb_backtrace+0x37 _witness_debugger() at 0xffffffff8035a72c = _witness_debugger+0x2c witness_checkorder() at 0xffffffff8035b771 = witness_checkorder+0x651 __lockmgr_args() at 0xffffffff803086b8 = __lockmgr_args+0xb98 ffs_lock() at 0xffffffff805039fc = ffs_lock+0x8c VOP_LOCK1_APV() at 0xffffffff80592442 = VOP_LOCK1_APV+0x52 _vn_lock() at 0xffffffff803afef7 = _vn_lock+0x47 knlist_remove_kq() at 0xffffffff802eddfe = knlist_remove_kq+0x7e knote_fdclose() at 0xffffffff802eeee7 = knote_fdclose+0x157 kern_close() at 0xffffffff802ea399 = kern_close+0xe9 amd64_syscall() at 0xffffffff80550a4b = amd64_syscall+0x11b Xfast_syscall() at 0xffffffff8053a56c = Xfast_syscall+0xfc --- syscall (6, FreeBSD ELF64, close), rip = 0x80118759c, rsp = 0x7fffffffe838, rbp = 0x8030506d0 --- lock order reversal: 1st 0xffffff80f37a9250 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2636 2nd 0xffffff0004528600 dirhash (dirhash) @ /usr/src/sys/ufs/ufs/ufs_dirhash.c:285 KDB: stack backtrace: db_trace_self_wrapper() at 0xffffffff801d488a = db_trace_self_wrapper+0x2a kdb_backtrace() at 0xffffffff80349e07 = kdb_backtrace+0x37 _witness_debugger() at 0xffffffff8035a72c = _witness_debugger+0x2c witness_checkorder() at 0xffffffff8035b771 = witness_checkorder+0x651 _sx_xlock() at 0xffffffff80323d34 = _sx_xlock+0x34 ufsdirhash_acquire() at 0xffffffff805057e3 = ufsdirhash_acquire+0x33 ufsdirhash_add() at 0xffffffff80505d39 = ufsdirhash_add+0x19 ufs_direnter() at 0xffffffff805083af = ufs_direnter+0x82f ufs_makeinode() at 0xffffffff8050d705 = ufs_makeinode+0x245 VOP_CREATE_APV() at 0xffffffff80592d84 = VOP_CREATE_APV+0x44 vn_open_cred() at 0xffffffff803afb2a = vn_open_cred+0x44a kern_openat() at 0xffffffff803ab9ff = kern_openat+0x17f amd64_syscall() at 0xffffffff80550a4b = amd64_syscall+0x11b Xfast_syscall() at 0xffffffff8053a56c = Xfast_syscall+0xfc --- syscall (5, FreeBSD ELF64, open), rip = 0x802c5072c, rsp = 0x7fffffffdb08, rbp = 0x8078041c0 --- >How-To-Repeat: Log in and use the system. >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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