This was on the new(er) laptop with which I have been experimenting; it uses iichid to controll/access the built-in mouse/touchpad. The machine was running: FreeBSD g1-48.catwhisker.org 14.0-CURRENT FreeBSD 14.0-CURRENT #252 main-n246951-38e7025a60b2: Wed May 26 04:56:25 PDT 2021 root_at_g1-48.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY amd64 1400017 1400017 at the time. Note that the reboot after building the above (yesterday) was without issue, and the reboot after the panic was also without issue -- so this would seem to have elements of timing/racing involved. (And it's likely to be distinctly unpleasant to debug, as it seems that reproduction may be rather "iffy.") I took a photo of the displayed backtrace; it's at https://www.catwhisker.org/~david/FreeBSD/head/n246951/device_unbusy.jpg Here's a slightly-abbreviated hand-transcribed version: panic: device_unbusy: called for non-busy device iichid0 cpuid = 8 time = 1622113818 KDB: stack backtrace: db_trace_self_wrapper() vpanic() panic() device_unbusy() iicbus_release_bus() iichid_intr() ithread-loop() fork_exit() fork_trampoline() --- trap 0, rip = 0, rsp = 0, rbp = 0 --- KDB: enter: panic [ thread pid 12 tid 100170 ] Stopped at 0xffffffff80c36867 = kdb_enter+ 0x37: $0,0x12a0b9e(%rip) db> Peace, david -- David H. Wolfskill david_at_catwhisker.org Republican Congressional leaders are giving support to those who took up arms against the government of the United States on 06 January 2021. See https://www.catwhisker.org/~david/publickey.gpg for my public key.
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