Date: Sun, 28 Aug 2005 15:21:29 +0100 From: David Reid <david@jetnet.co.uk> To: FreeBSD AMD64 Mailing List <freebsd-amd64@FreeBSD.org> Subject: Witness output Message-ID: <4311C869.4000909@jetnet.co.uk>
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Aug 27 17:27:44 draak kernel: lock order reversal Aug 27 17:27:44 draak kernel: 1st 0xffffff007b7dea80 pcm0:play:0 (pcm play channel) @ /usr/src/sys/dev/sound/pcm/channel.c:1134 Aug 27 17:27:44 draak kernel: 2nd 0xffffffff806e3080 kernel environment (kernel environment) @ /usr/src/sys/kern/subr_hints.c:117 Aug 27 17:27:44 draak kernel: KDB: stack backtrace: Aug 27 17:27:44 draak kernel: witness_checkorder() at witness_checkorder+0x4af Aug 27 17:27:44 draak kernel: _sx_slock() at _sx_slock+0x4d Aug 27 17:27:44 draak kernel: res_find() at res_find+0x41a Aug 27 17:27:44 draak kernel: resource_find() at resource_find+0x7e Aug 27 17:27:44 draak kernel: resource_int_value() at resource_int_value+0x63 Aug 27 17:27:44 draak kernel: vchan_create() at vchan_create+0x2d8 Aug 27 17:27:44 draak kernel: sysctl_hw_snd_maxautovchans() at sysctl_hw_snd_maxautovchans+0x1b4 Aug 27 17:27:44 draak kernel: sysctl_root() at sysctl_root+0xa0 Aug 27 17:27:44 draak kernel: userland_sysctl() at userland_sysctl+0x11c Aug 27 17:27:44 draak kernel: __sysctl() at __sysctl+0xcd Aug 27 17:27:44 draak kernel: syscall() at syscall+0x4b2 Aug 27 17:27:44 draak kernel: Xfast_syscall() at Xfast_syscall+0xa8 Aug 27 17:27:44 draak kernel: --- syscall (202, FreeBSD ELF64, __sysctl), rip = 0x8006daa5c, rsp = 0x7fffffffe518, rbp = 0x3 --- Is it worth reporting these when they occur and if it is, is this the correct place? david
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