Date: Sat, 20 Jun 2020 01:28:09 +0300 From: Yuri Pankov <yuripv@yuripv.dev> To: current@freebsd.org Subject: uma_zalloc_debug warnings after r362231 Message-ID: <af614ad6-731d-271d-d309-7688fc4a281d@yuripv.dev>
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I've started getting the following after r362231 (I think) when plugging USB drive, not seeing any real issues though: ugen0.9: <Western Digital Elements 25A2> at usbus0 umass0 numa-domain 0 on uhub4 umass0: <Western Digital Elements 25A2, class 0/0, rev 2.10/10.26, addr 10> on usbus0 umass0: SCSI over Bulk-Only; quirks = 0xc101 umass0:2:0: Attached to scbus2 uma_zalloc_debug: zone "kenv" with the following non-sleepable locks held: exclusive sleep mutex CAM device lock (CAM device lock) r = 0 (0xfffff8000dcb6cd0) locked @ /usr/src/sys/cam/scsi/scsi_pass.c:674 stack backtrace: #0 0xffffffff80c32981 at witness_debugger+0x71 #1 0xffffffff80c3391d at witness_warn+0x40d #2 0xffffffff80efe426 at uma_zalloc_arg+0x46 #3 0xffffffff80b741da at getenv_string_buffer+0x3a #4 0xffffffff80b74907 at getenv_quad+0x17 #5 0xffffffff80b748d2 at getenv_int+0x12 #6 0xffffffff803a7f1a at daregister+0x1ea #7 0xffffffff8037445b at cam_periph_alloc+0x57b #8 0xffffffff803a7872 at daasync+0x2c2 #9 0xffffffff80381aa2 at xpt_async_process_dev+0x152 #10 0xffffffff8037d682 at xpt_async_process+0x312 #11 0xffffffff8037ddf2 at xpt_done_process+0x382 #12 0xffffffff8037fdb5 at xpt_done_td+0xf5 #13 0xffffffff80b831e0 at fork_exit+0x80 #14 0xffffffff810413ce at fork_trampoline+0xe da0 at umass-sim0 bus 0 scbus2 target 0 lun 0 da0: <WD Elements 25A2 1026> Fixed Direct Access SPC-4 SCSI device da0: Serial Number 575845314136394150553136 da0: 40.000MB/s transfers da0: 953837MB (1953458176 512 byte sectors) da0: quirks=0x2<NO_6_BYTE>
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