It could cause deadlock because of the spin lock of uart.
CPU0:
(gdb) bt
#0 0x402805ac in rspin_lock (lock=0x414cfd50 <g_uart0port+76>) at nuttx/include/nuttx/spinlock.h:692
#1 rspin_lock_irqsave (lock=0x414cfd50 <g_uart0port+76>) at nuttx/include/nuttx/spinlock.h:705
#2 rspin_lock_irqsave_nopreempt (lock=0x414cfd50 <g_uart0port+76>) at nuttx/include/nuttx/spinlock.h:724
#3 uart_spinlock (dev=dev@entry=0x414cfd04 <g_uart0port>, nopreempt=nopreempt@entry=true) at serial/serial.c:2046
#4 0x40221350 in up_putc (ch=91) at chip/r528_serial.c:1318
#5 0x402bfd38 in up_nputs (str=0x450a4ca9 "26/01/04 09:51:39] [CPU1] [657] [ap] mm_map_destroy: Driver munmap failed\n@\210٤A8٤A\215\263+@", str@entry=0x450a4ca8 "[26/01/04 09:51:39] [CPU1] [657] [ap] mm_map_destroy: Driver munmap failed\n@\210٤A8٤A\215\263+@", len=73, len@entry=74) at common/arm_nputs.c:44
#6 0x40283e86 in syslog_default_write (channel=<optimized out>, buffer=0x450a4ca8 "[26/01/04 09:51:39] [CPU1] [657] [ap] mm_map_destroy: Driver munmap failed\n@\210٤A8٤A\215\263+@", buflen=74) at syslog/syslog_channel.c:351
#7 0x402a2e00 in syslog_write_foreach (buffer=buffer@entry=0x450a4ca8 "[26/01/04 09:51:39] [CPU1] [657] [ap] mm_map_destroy: Driver munmap failed\n@\210٤A8٤A\215\263+@", buflen=buflen@entry=75, force=false) at syslog/syslog_write.c:148
#8 0x402a2ec2 in syslog_write (buffer=buffer@entry=0x450a4ca8 "[26/01/04 09:51:39] [CPU1] [657] [ap] mm_map_destroy: Driver munmap failed\n@\210٤A8٤A\215\263+@", buflen=buflen@entry=75) at syslog/syslog_write.c:253
#9 0x402b17a2 in syslograwstream_flush (self=self@entry=0x450a4c90) at stream/lib_syslograwstream.c:74
#10 0x402b196e in lib_syslograwstream_close (stream=stream@entry=0x450a4c90) at stream/lib_syslograwstream.c:330
#11 0x40283d90 in nx_vsyslog (priority=<optimized out>, fmt=0x4111c81c "%s: Driver munmap failed\n", ap=ap@entry=0x450a4ecc) at syslog/vsyslog.c:275
#12 0x402b2772 in vsyslog (priority=priority@entry=3, fmt=fmt@entry=0x450a4ee8 "L\266,A", ap=..., ap@entry=...) at syslog/lib_syslog.c:82
#13 0x402b278a in syslog (priority=priority@entry=3, fmt=0x4111c81c "%s: Driver munmap failed\n") at syslog/lib_syslog.c:115
#14 0x402bd504 in mm_map_destroy (mm=mm@entry=0x422605f8) at map/mm_map.c:172
#15 0x4026e87a in group_release (ttype=0, group=0x42260558) at group/group_leave.c:101
#16 group_leave (tcb=tcb@entry=0x42260450) at group/group_leave.c:193
#17 0x40271e7e in nxtask_exithook (tcb=tcb@entry=0x42260450, status=status@entry=0) at task/task_exithook.c:485
#18 0x4026c826 in _exit (status=80, status@entry=1109787728) at task/exit.c:106
#19 0x402aec9c in exit (status=1109787728) at stdlib/lib_exit.c:126
CPU1:
(gdb) bt
#0 0x4026a1a8 in rspin_lock (lock=<optimized out>) at nuttx/include/nuttx/spinlock.h:692
#1 rspin_lock_irqsave (lock=<optimized out>) at nuttx/include/nuttx/spinlock.h:705
#2 nxsem_post_slow (sem=sem@entry=0x414cfd20 <g_uart0port+28>) at semaphore/sem_post.c:145
#3 0x4027fc2e in nxsem_post (sem=<optimized out>) at nuttx/include/nuttx/semaphore.h:781
#4 uart_wakeup (sem=0x414cfd20 <g_uart0port+28>) at serial/serial.c:2026
#5 0x402828cc in uart_xmitchars (dev=dev@entry=0x414cfd04 <g_uart0port>) at serial/serial_io.c:121
#6 0x4022116a in uart_interrupt (irq=<optimized out>, context=<optimized out>, arg=0x414cfd04 <g_uart0port>) at chip/r528_serial.c:841
#7 0x40265dd8 in irq_dispatch (irq=irq@entry=34, context=context@entry=0x44194100) at irq/irq_dispatch.c:172
#8 0x4024ac3e in arm_doirq (irq=34, irq@entry=0, regs=0x44194100) at arm_a_r/arm_doirq.c:88
#9 0x40220246 in arm_decodeirq (regs=<optimized out>) at armv7-a/arm_gicv2.c:417
#10 0x40200118 in arm_vectorirq () at armv7-a/arm_vectors.S:242
#11 0x402bb916 in up_irq_restore (flags=31) at nuttx/include/arch/armv7-a/irq.h:438
#12 spin_unlock_irqrestore_notrace (flags=31, lock=0x44194150) at nuttx/include/nuttx/spinlock.h:923
#13 spin_unlock_irqrestore (flags=31, lock=0x44194150) at nuttx/include/nuttx/spinlock.h:961
#14 mempool_release (pool=0x44194100, blk=0x4261e810) at mempool/mempool.c:724
#15 0x402bca90 in mempool_multiple_free (mpool=<optimized out>, blk=<optimized out>, blk@entry=0x4261e810) at mempool/mempool_multiple.c:790
#16 0x402b8f6c in mm_forcefree (heap=0x41a4d4e8, mem=0x4261e810) at mm_heap/mm_free.c:118
#17 0x402b9394 in mm_free (heap=<optimized out>, mem=<optimized out>) at mm_heap/mm_free.c:285
#18 0x402ba2f0 in free (mem=<optimized out>) at umm_heap/umm_free.c:51
#19 0x40725dde in av_free (ptr=<optimized out>) at ffmpeg/libavutil/mem.c:243
#20 av_freep (arg=arg@entry=0x441942b4) at ffmpeg/libavutil/mem.c:253
#21 0x40722010 in av_frame_free (frame=frame@entry=0x441942b4) at ffmpeg/libavutil/frame.c:168
#22 0x40a194fc in media_player_on_event_cb (udata=0x441b3fc0, evt=<optimized out>, args=<optimized out>) at server/media_player.c:312
#23 0x406cbf7e in abufsrc_activate (ctx=0x41b1d0c0) at ffmpeg/libavfilter/asrc_abufsrc.c:329
#24 0x406cff04 in ff_filter_activate (filter=filter@entry=0x41b1d0c0) at ffmpeg/libavfilter/avfilter.c:1485
#25 0x40a25c2e in audio_graph_run_all (graph=0x41abca40) at server/audio_graph.c:635
#26 audio_graph_run_once (ctx=<optimized out>) at server/audio_graph.c:650
#27 0x40a17ede in mediad_main (argc=<optimized out>, argv=<optimized out>) at server/media_daemon.c:162
#28 0x402ad480 in nxtask_startup (entrypt=entrypt@entry=0x40a17c95 <mediad_main>, argc=<optimized out>, argv=<optimized out>) at sched/task_startup.c:66
#29 0x4026c194 in nxtask_start () at task/task_start.c:107
#30 0x00000000 in ?? ()
Signed-off-by: xuxingliang <xuxingliang@xiaomi.com>
4286f14ad7