Date: Thu, 10 May 2018 22:46:28 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Harry Schmalzbauer <freebsd@omnilan.de>, scsi@freebsd.org Subject: Re: camcontrol eject -> panic: sleep on wchan with sleeping prohibited Message-ID: <4ea0a7e1-a8b9-b465-cdc7-36ddad6b1293@FreeBSD.org> In-Reply-To: <5AF4800F.4030900@omnilan.de> References: <5AF4800F.4030900@omnilan.de>
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On 10/05/2018 20:23, Harry Schmalzbauer wrote: > Hello, > > HEAD panics reproducably if I eject cd-rom media: > > Unread portion of the kernel message buffer: > panic: sleepq_add: td 0xfffff800035ad560 to sleep on wchan > 0xfffff8000b015048 with sleeping prohibited See https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219857 Especially comment #1. > cpuid = 2 > time = 1525970358 > --- trap 0, rip = 0, rsp = 0, rbp = 0 --- > #2 0xffffffff803e6b79 in db_command (cmd_table=<value optimized out>) at > /usr/local/share/deploy-tools/HEAD/src/sys/ddb/db_command.c:481 > #3 0xffffffff803e68f4 in db_command_loop () at > /usr/local/share/deploy-tools/HEAD/src/sys/ddb/db_command.c:534 > #4 0xffffffff803e9b8f in db_trap (type=<value optimized out>, > code=<value optimized out>) at > /usr/local/share/deploy-tools/HEAD/src/sys/ddb/db_main.c:252 > #5 0xffffffff80811253 in kdb_trap (type=3, code=-61456, tf=<value > optimized out>) at > /usr/local/share/deploy-tools/HEAD/src/sys/kern/subr_kdb.c:697 > #6 0xffffffff80b0a83d in trap (frame=0xfffffe000048c500) at > /usr/local/share/deploy-tools/HEAD/src/sys/amd64/amd64/trap.c:601 > #7 0xffffffff80ae709c in calltrap () at > /usr/local/share/deploy-tools/HEAD/src/sys/amd64/amd64/exception.S:230 > #8 0xffffffff8081093b in kdb_enter (why=0xffffffff80c6eecf "panic", > msg=<value optimized out>) at cpufunc.h:65 > #9 0xffffffff807cafc0 in vpanic (fmt=<value optimized out>, > ap=0xfffffe000048c670) at > /usr/local/share/deploy-tools/HEAD/src/sys/kern/kern_shutdown.c:852 > #10 0xffffffff807cad70 in kassert_panic (fmt=<value optimized out>) at > /usr/local/share/deploy-tools/HEAD/src/sys/kern/kern_shutdown.c:749 > #11 0xffffffff8081f538 in sleepq_add (wchan=0xfffff8000b015048, > lock=0xfffff8000b013cd0, wmesg=0xffffffff80c4d180 "cbwait", flags=0, > queue=0) > at /usr/local/share/deploy-tools/HEAD/src/sys/kern/subr_sleepqueue.c:319 > #12 0xffffffff807d50f1 in _sleep (ident=<value optimized out>, > lock=<value optimized out>, priority=92, wmesg=0xffffffff80c4d180 "cbwait", > #13 0xffffffff802f4a7d in cam_periph_runccb (ccb=0xfffff8000b015000, > error_routine=0xffffffff8031ddd0 <cderror>, camflags=CAM_RETRY_SELTO, > sense_flags=3, > ds=0xfffff80003588000) at > /usr/local/share/deploy-tools/HEAD/src/sys/cam/cam_periph.c:1141 > #14 0xffffffff8031d69a in cdcheckmedia (periph=0xfffff8000b11c100) at > /usr/local/share/deploy-tools/HEAD/src/sys/cam/scsi/scsi_cd.c:808 > #15 0xffffffff80319cf5 in cdstrategy (bp=0xfffff800ccdd4300) at > /usr/local/share/deploy-tools/HEAD/src/sys/cam/scsi/scsi_cd.c:848 > #16 0xffffffff8070e274 in g_disk_start (bp=<value optimized out>) at > /usr/local/share/deploy-tools/HEAD/src/sys/geom/geom_disk.c:478 > #17 0xffffffff80712255 in g_io_schedule_down (tp=<value optimized out>) > at /usr/local/share/deploy-tools/HEAD/src/sys/geom/geom_io.c:893 > #18 0xffffffff80712a7d in g_down_procbody (arg=<value optimized out>) at > /usr/local/share/deploy-tools/HEAD/src/sys/geom/geom_kern.c:111 > #19 0xffffffff8078aa74 in fork_exit (callout=0xffffffff80712a10 > <g_down_procbody>, arg=0x0, frame=0xfffffe000048cac0) > at /usr/local/share/deploy-tools/HEAD/src/sys/kern/kern_fork.c:1039 > #20 0xffffffff80ae804e in fork_trampoline () at > /usr/local/share/deploy-tools/HEAD/src/sys/amd64/amd64/exception.S:971 > #21 0x0000000000000000 in ?? () > Current language: auto; currently minima > > Since I see many geom/cam issues show up here at scsi@, I thought this > was the right place to report. > Please correct me if wrong. > > Observed with r3333xx (HEAD from today and about two days back) – > haven't run HEAD before, so no indication of recent regression! -- Andriy Gapon
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