Date: Tue, 18 Aug 2020 14:48:47 +0200 From: Mateusz Guzik <mjguzik@gmail.com> To: current@freebsd.org Subject: Re: "panic: malloc(M_WAITOK) in non-sleepable context" after r364296 -> r364341 Message-ID: <CAGudoHEEnZVaBwY1L-wjmDcrsHyP4pE3-0qyurh-kWsCO9Edhg@mail.gmail.com> In-Reply-To: <20200818124419.GO1394@albert.catwhisker.org> References: <20200818124419.GO1394@albert.catwhisker.org>
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see https://reviews.freebsd.org/D26027 On 8/18/20, David Wolfskill <david@catwhisker.org> wrote: > Just did a src update from r364296 -> r364341 on amd64 on my bild > machine (laptop is still working -- it built firefox earlier, which > takes some time). On initial reboot, the build machine panicked: > > umass0: SCSI over Bulk-Only; quirks = 0x4000 > umass0:6:0: Attached to scbus6 > (probe0:umass-sim0:0:0:0): Down reving Protocol Version from 2 to 0? > panic: malloc(M_WAITOK) in non-sleepable context > cpuid = 1 > time = 20 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame > 0xffffffff8218d440 > vpanic() at vpanic+0x182/frame 0xffffffff8218d490 > panic() at panic+0x43/frame 0xffffffff8218d4f0 > malloc() at malloc+0x20c/frame 0xffffffff8218d540 > devfs_alloc() at devfs_alloc+0x28/frame 0xffffffff8218d570 > make_dev_sv() at make_dev_sv+0x97/frame 0xffffffff8218d600 > make_dev_s() at make_dev_s+0x3b/frame 0xffffffff8218d660 > passregister() at passregister+0x3e7/frame 0xffffffff8218d8b0 > cam_periph_alloc() at cam_periph_alloc+0x57b/frame 0xffffffff8218d980 > passasync() at passasync+0x5c/frame 0xffffffff8218d9c0 > xpt_async_process_dev() at xpt_async_process_dev+0x152/frame > 0xffffffff8218da10 > xpt_async_process() at xpt_async_process+0x334/frame 0xffffffff8218db20 > xpt_done_process() at xpt_done_process+0x3a3/frame 0xffffffff8218db60 > xpt_done_td() at xpt_done_td+0xf5/frame 0xffffffff8218dbb0 > fork_exit() at fork_exit+0x80/frame 0xffffffff8218dbf0 > fork_trampoline() at fork_trampoline+0xe/frame 0xffffffff8218dbf0 > --- trap 0, rip = 0, rsp = 0, rbp = 0 --- > KDB: enter: panic > [ thread pid 16 tid 100068 ] > Stopped at kdb_enter+0x37: movq $0,0x10b70f6(%rip) > db> > > > So -- it's at the debugger prompt; given sufficient hints, I'm happy > to poke at it & report back. > > Yesterday's (r364296) verbose dmesg.boot is at > http://www.catwhisker.org/~david/FreeBSD/history/freebeast.13_dmesg.txt > (in case that's useful). > > Peace, > david > -- > David H. Wolfskill david@catwhisker.org > Donald Trump is either ignorant of how to govern or is refusing to do so. > > See http://www.catwhisker.org/~david/publickey.gpg for my public key. > -- Mateusz Guzik <mjguzik gmail.com>
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