Re: RPi4 Status and xorg behavior (FreeBSD debug kernel panics for USB storage devices)
Mark Millard via freebsd-arm <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.arm |
|---|---|
| Message-ID | <[email protected]> |
There is a known FreeBSD error exposed by recent debug kernels that panic with backtraces like the following when USB storage is present or plugged in, not just on aarch64 or armv7/6 but in general: panic: malloc(M_WAITOK) with sleeping prohibited cpuid = 0 time = 1615452946 KDB: stack backtrace: db_trace_self() at db_trace_self db_trace_self_wrapper() at db_trace_self_wrapper+0x30 vpanic() at vpanic+0x184 panic() at panic+0x44 malloc_dbg() at malloc_dbg+0xf8 malloc() at malloc+0x30 disk_alloc() at disk_alloc+0x1c daregister() at daregister+0x3b8 cam_periph_alloc() at cam_periph_alloc+0x528 daasync() at daasync+0x260 xpt_async_process_dev() at xpt_async_process_dev+0x194 xpt_async_process() at xpt_async_process+0x3a0 xpt_done_process() at xpt_done_process+0x314 xpt_done_td() at xpt_done_td+0xd8 fork_exit() at fork_exit+0x74 fork_trampoline() at fork_trampoline+0x14 It turns out that the snapshot: FreeBSD-14.0-CURRENT-arm64-aarch64-RPI-20210311-15565e0a217-257277.img.xz Is an example of having this problem. So are the other "20210311" snapshots with debug kernels. Recent https://artifact.ci.freebsd.org/snapshot/ materials will also have the problem (debug kernels). The http://ftp3.freebsd.org/pub/FreeBSD/releases/ material do not have debug kernels and so will not panic and should work as long as various memory allocations do not fail. https://reviews.freebsd.org/D29210/ is for a patch in review for the issue. Various folks have used it to get debug kernels going for their activities. === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar) _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-arm To unsubscribe, send any mail to "[email protected]"