With the 12.0-BETA3 BEAGLEBONE image, I very often see this panic
when I plug a USB attached SSD disk in.
login: ugen1.2: <Seagate USB 2.0 Cable> at usbus1
umass0 on uhub0
umass0: <Seagate USB 2.0 Cable, class 0/0, rev 2.00/1.48, addr 2> on
usbus1
umass0: SCSI over Bulk-Only; quirks = 0x8100
umass0:0:0: Attached to scbus0
da0 at umass-sim0 bus 0 scbus0 target 0 lun 0
da0: <Seagate USB 2.0 Cable 0148> Fixed Direct Access SPC-2 SCSI device
da0: Serial Number 2HC015KJ
da0: 40.000MB/s transfers
da0: 38166MB (78165359 512 byte sectors)
da0: quirks=0x2<NO_6_BYTE>
panic: _mtx_lock_sleep: recursed on non-recursive mutex CAM device lock
@ /usr/src/sys/cam/scsi/scsi_da.c:2123
cpuid = 0
time = 1541273846
KDB: stack backtrace:
db_trace_self() at db_trace_self
pc = 0xc05c93f4 lr = 0xc0075dd8 (db_trace_self_wrapper+0x30)
sp = 0xc35dca40 fp = 0xc35dcb58
db_trace_self_wrapper() at db_trace_self_wrapper+0x30
pc = 0xc0075dd8 lr = 0xc029d624 (vpanic+0x16c)
sp = 0xc35dcb60 fp = 0xc35dcb80
r4 = 0x00000100 r5 = 0x00000001
r6 = 0xc06d2cde r7 = 0xc0a94fd8
vpanic() at vpanic+0x16c
pc = 0xc029d624 lr = 0xc029d404 (doadump)
sp = 0xc35dcb88 fp = 0xc35dcb8c
r4 = 0x00000000 r5 = 0xd1eb1474
r6 = 0xc06ff75f r7 = 0xc259b780
r8 = 0xd1eb1464 r9 = 0xc259b780
r10 = 0x0000084b
doadump() at doadump
pc = 0xc029d404 lr = 0xc0282c14 (__mtx_unlock_flags)
sp = 0xc35dcb94 fp = 0xc35dcbf0
r4 = 0xc029d404 r5 = 0xc35dcb94
__mtx_unlock_flags() at __mtx_unlock_flags
pc = 0xc0282c14 lr = 0xc0282538 (__mtx_lock_flags+0xec)
sp = 0xc35dcbf8 fp = 0xc35dcc20
r4 = 0x00000000 r5 = 0xd1eb1464
r6 = 0xc06ff75f r10 = 0x0000084b
__mtx_lock_flags() at __mtx_lock_flags+0xec
pc = 0xc0282538 lr = 0xc002f384 (daasync+0x5c)
sp = 0xc35dcc28 fp = 0xc35dcc70
r4 = 0xc0018574 r5 = 0xd375f940
r6 = 0x00000400 r7 = 0xc23ed900
r8 = 0x00000000 r9 = 0xc072ee95
r10 = 0xd375f940
daasync() at daasync+0x5c
pc = 0xc002f384 lr = 0xc000f6e4 (xpt_async_process_dev+0x220)
sp = 0xc35dcc78 fp = 0xc35dcca8
r4 = 0xc0018574 r5 = 0xd375f940
r6 = 0x00000400 r7 = 0xc002f328
r8 = 0xc2322320 r9 = 0xc072ee95
r10 = 0xc2322300
xpt_async_process_dev() at xpt_async_process_dev+0x220
pc = 0xc000f6e4 lr = 0xc000e614 (xptdevicetraverse+0xa4)
sp = 0xc35dccb0 fp = 0xc35dccd0
r4 = 0xd376994c r5 = 0xd1eb1474
r6 = 0xc072ee95 r7 = 0xd1eb1000
r8 = 0xd3769900 r9 = 0xd41a2800
r10 = 0xc000f4c4
xptdevicetraverse() at xptdevicetraverse+0xa4
pc = 0xc000e614 lr = 0xc000e3a0 (xpttargettraverse+0x7c)
sp = 0xc35dccd8 fp = 0xc35dccf8
r4 = 0xd3769900 r5 = 0xd376994c
r6 = 0xd3769800 r7 = 0xc091a140
r8 = 0xd41a2800 r9 = 0xc000f458
r10 = 0xd375f940
xpttargettraverse() at xpttargettraverse+0x7c
pc = 0xc000e3a0 lr = 0xc000b3f4 ($a.10+0x148)
sp = 0xc35dcd00 fp = 0xc35dcdc0
r4 = 0x00000000 r5 = 0x00000400
r6 = 0xd3769900 r7 = 0xc091a140
r8 = 0xd41a2800 r9 = 0xd375f944
r10 = 0xd375f940
$a.10() at $a.10+0x148
pc = 0xc000b3f4 lr = 0xc000bbe8 (xpt_done_process+0x3c4)
sp = 0xc35dcdc8 fp = 0xc35dcdd8
r4 = 0xd41a2800 r5 = 0xc258ca80
r6 = 0x00000000 r7 = 0xc091a140
r8 = 0x00000001 r9 = 0x00000100
r10 = 0xc35dcdfc
xpt_done_process() at xpt_done_process+0x3c4
pc = 0xc000bbe8 lr = 0xc000dac4 (xpt_done_td+0xec)
sp = 0xc35dcde0 fp = 0xc35dce20
r4 = 0xc091a100 r5 = 0xc06d60c2
r6 = 0x00000000 r7 = 0xc091a140
xpt_done_td() at xpt_done_td+0xec
pc = 0xc000dac4 lr = 0xc0262f88 (fork_exit+0xa0)
sp = 0xc35dce28 fp = 0xc35dce40
r4 = 0xc259b780 r5 = 0xc23f7390
r6 = 0xc000d9d8 r7 = 0xc091a100
r8 = 0xc35dce48 r9 = 0x00000000
r10 = 0x00000000
fork_exit() at fork_exit+0xa0
pc = 0xc0262f88 lr = 0xc05cbcd4 (swi_exit)
sp = 0xc35dce48 fp = 0x00000000
r4 = 0xc000d9d8 r5 = 0xc091a100
r6 = 0x00000000 r7 = 0x00000000
r8 = 0x00000000 r10 = 0x00000000
swi_exit() at swi_exit
pc = 0xc05cbcd4 lr = 0xc05cbcd4 (swi_exit)
sp = 0xc35dce48 fp = 0x00000000
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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