Date: Thu, 23 Jan 2020 08:44:19 -0800 From: bob prohaska <fbsd@www.zefox.net> To: freebsd-arm@freebsd.org Subject: panic: deadlres_td_sleep_q: possible deadlock detected on RPI3 Message-ID: <20200123164419.GA81833@www.zefox.net>
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My Pi3 running -current r356835 reported:
panic: deadlres_td_sleep_q: possible deadlock detected for 0xfffffd0000eff000, blocked for 1800305 ticks
cpuid = 0
time = 1579775738
KDB: stack backtrace:
db_trace_self() at db_trace_self_wrapper+0x28
pc = 0xffff0000007392dc lr = 0xffff000000106814
sp = 0xffff0000520ce580 fp = 0xffff0000520ce790
db_trace_self_wrapper() at vpanic+0x194
pc = 0xffff000000106814 lr = 0xffff00000040968c
sp = 0xffff0000520ce7a0 fp = 0xffff0000520ce850
vpanic() at panic+0x44
pc = 0xffff00000040968c lr = 0xffff000000409434
sp = 0xffff0000520ce860 fp = 0xffff0000520ce8e0
panic() at deadlkres+0x2f8
pc = 0xffff000000409434 lr = 0xffff0000003a480c
sp = 0xffff0000520ce8f0 fp = 0xffff0000520ce940
deadlkres() at fork_exit+0x7c
pc = 0xffff0000003a480c lr = 0xffff0000003c8a0c
sp = 0xffff0000520ce950 fp = 0xffff0000520ce980
fork_exit() at fork_trampoline+0x10
pc = 0xffff0000003c8a0c lr = 0xffff000000755b3c
sp = 0xffff0000520ce990 fp = 0x0000000000000000
KDB: enter: panic
[ thread pid 0 tid 100052 ]
Stopped at 0
db>
db> bt
Tracing pid 0 tid 100052 td 0xfffffd0000ce8560
db_trace_self() at db_stack_trace+0xf8
pc = 0xffff0000007392dc lr = 0xffff000000103c58
sp = 0xffff0000520ce150 fp = 0xffff0000520ce180
db_stack_trace() at db_command+0x228
pc = 0xffff000000103c58 lr = 0xffff0000001038d0
sp = 0xffff0000520ce190 fp = 0xffff0000520ce270
db_command() at db_command_loop+0x58
pc = 0xffff0000001038d0 lr = 0xffff000000103678
sp = 0xffff0000520ce280 fp = 0xffff0000520ce2a0
db_command_loop() at db_trap+0xf4
pc = 0xffff000000103678 lr = 0xffff00000010697c
sp = 0xffff0000520ce2b0 fp = 0xffff0000520ce4d0
db_trap() at kdb_trap+0x1d8
pc = 0xffff00000010697c lr = 0xffff000000450af8
sp = 0xffff0000520ce4e0 fp = 0xffff0000520ce590
kdb_trap() at do_el1h_sync+0xf4
pc = 0xffff000000450af8 lr = 0xffff000000755db8
sp = 0xffff0000520ce5a0 fp = 0xffff0000520ce5d0
do_el1h_sync() at handle_el1h_sync+0x78
pc = 0xffff000000755db8 lr = 0xffff00000073b878
sp = 0xffff0000520ce5e0 fp = 0xffff0000520ce6f0
handle_el1h_sync() at kdb_enter+0x34
pc = 0xffff00000073b878 lr = 0xffff000000450144
sp = 0xffff0000520ce700 fp = 0xffff0000520ce790
kdb_enter() at vpanic+0x1b0
pc = 0xffff000000450144 lr = 0xffff0000004096a8
sp = 0xffff0000520ce7a0 fp = 0xffff0000520ce850
vpanic() at panic+0x44
pc = 0xffff0000004096a8 lr = 0xffff000000409434
sp = 0xffff0000520ce860 fp = 0xffff0000520ce8e0
panic() at deadlkres+0x2f8
pc = 0xffff000000409434 lr = 0xffff0000003a480c
sp = 0xffff0000520ce8f0 fp = 0xffff0000520ce940
deadlkres() at fork_exit+0x7c
pc = 0xffff0000003a480c lr = 0xffff0000003c8a0c
sp = 0xffff0000520ce950 fp = 0xffff0000520ce980
fork_exit() at fork_trampoline+0x10
pc = 0xffff0000003c8a0c lr = 0xffff000000755b3c
sp = 0xffff0000520ce990 fp = 0x0000000000000000
db>
For now I'll reboot the old kernel, update sources and start over.
Thanks for reading,
bob prohaska
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