Date: Wed, 30 Dec 2015 01:26:00 +0100 From: Oliver Pinter <oliver.pinter@hardenedbsd.org> To: stable@freebsd.org Subject: new LORs on 10-STABLE Message-ID: <CAPQ4ffuLLX4d--EGEDg0wnGxUnMg5uD0yzupTaa-Nn%2Bsan=tJA@mail.gmail.com>
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Hi All! I get these new LORs with a recent 10-STABLE (~10-stable from today) branch: LOR1: [12] lock order reversal: [12] 1st 0xfffff8000d1ea7c8 ufs (ufs) @ /usr/src/sys/kern/vfs_mount.c:1224 [12] 2nd 0xfffff8000d1eb240 devfs (devfs) @ /usr/src/sys/kern/vfs_subr.c:2192 [12] KDB: stack backtrace: [12] db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0465ef9170 [12] kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe0465ef9220 [12] witness_checkorder() at witness_checkorder+0xe12/frame 0xfffffe0465ef92b0 [12] __lockmgr_args() at __lockmgr_args+0x9ea/frame 0xfffffe0465ef93f0 [12] vop_stdlock() at vop_stdlock+0x3c/frame 0xfffffe0465ef9410 [12] VOP_LOCK1_APV() at VOP_LOCK1_APV+0xd9/frame 0xfffffe0465ef9440 [12] _vn_lock() at _vn_lock+0xaa/frame 0xfffffe0465ef94b0 [12] vget() at vget+0x67/frame 0xfffffe0465ef94f0 [12] devfs_allocv() at devfs_allocv+0xfd/frame 0xfffffe0465ef9540 [12] devfs_root() at devfs_root+0x43/frame 0xfffffe0465ef9570 [12] vflush() at vflush+0x78/frame 0xfffffe0465ef96c0 [12] devfs_unmount() at devfs_unmount+0x38/frame 0xfffffe0465ef96f0 [12] dounmount() at dounmount+0x524/frame 0xfffffe0465ef9770 [12] sys_unmount() at sys_unmount+0x3c6/frame 0xfffffe0465ef98a0 [12] amd64_syscall() at amd64_syscall+0x2a8/frame 0xfffffe0465ef99b0 [12] Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe0465ef99b0 [12] --- syscall (22, FreeBSD ELF64, sys_unmount), rip = 0x102e573755a, rsp = 0x62a395ff4318, rbp = 0x62a395ff4470 --- LOR2: [13] lock order reversal: [13] 1st 0xfffff8000d3feb78 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2192 [13] 2nd 0xfffffe03df2460d8 bufwait (bufwait) @ /usr/src/sys/ufs/ffs/ffs_vnops.c:262 [13] 3rd 0xfffff8000d33a5f0 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2192 [13] KDB: stack backtrace: [13] db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0465ed0b30 [13] kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe0465ed0be0 [13] witness_checkorder() at witness_checkorder+0xe12/frame 0xfffffe0465ed0c70 [13] __lockmgr_args() at __lockmgr_args+0x9ea/frame 0xfffffe0465ed0db0 [13] ffs_lock() at ffs_lock+0x84/frame 0xfffffe0465ed0e00 [13] VOP_LOCK1_APV() at VOP_LOCK1_APV+0xd9/frame 0xfffffe0465ed0e30 [13] _vn_lock() at _vn_lock+0xaa/frame 0xfffffe0465ed0ea0 [13] vget() at vget+0x67/frame 0xfffffe0465ed0ee0 [13] vfs_hash_get() at vfs_hash_get+0xe1/frame 0xfffffe0465ed0f30 [13] ffs_vgetf() at ffs_vgetf+0x40/frame 0xfffffe0465ed0fc0 [13] softdep_sync_buf() at softdep_sync_buf+0xac0/frame 0xfffffe0465ed10a0 [13] ffs_syncvnode() at ffs_syncvnode+0x286/frame 0xfffffe0465ed1120 [13] ffs_truncate() at ffs_truncate+0x6ad/frame 0xfffffe0465ed1300 [13] ufs_direnter() at ufs_direnter+0x81a/frame 0xfffffe0465ed13c0 [13] ufs_makeinode() at ufs_makeinode+0x576/frame 0xfffffe0465ed1570 [13] ufs_create() at ufs_create+0x2d/frame 0xfffffe0465ed1590 [13] VOP_CREATE_APV() at VOP_CREATE_APV+0xcb/frame 0xfffffe0465ed15c0 [13] vn_open_cred() at vn_open_cred+0x2c3/frame 0xfffffe0465ed1720 [13] kern_openat() at kern_openat+0x26d/frame 0xfffffe0465ed18a0 [13] amd64_syscall() at amd64_syscall+0x2a8/frame 0xfffffe0465ed19b0 [13] Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe0465ed19b0 [13] --- syscall (499, FreeBSD ELF64, sys_openat), rip = 0x29173acbbaa, rsp = 0x6a7c0c683d08, rbp = 0x6a7c0c683de0 ---
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