It looks like this might indeed be the case:
read(12, "\335\27\10H\0\0\0\0\374L\1\0\0\0\0\0\0\0\0\0\1\0\0\0", 1024) = 24
read(12, 0x6115a0, 1024) = -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=4, events=POLLIN}, {fd=5, events=POLLIN}, {fd=7, events=POLLIN},
{fd=8, events=POLLIN}, {fd=9, events=POLLIN}, {fd=10, events=POLLIN}, {fd=11,
events=POLLIN}, {fd=6, events=POLLIN}, {fd=3, events=POLLIN, revents=POLLIN},
{fd=12, events=POLLIN}], 10, -1) = 1
read(3, "l\1\0\1\3\3\0\0\27\0\0\0\204\0\0\0\1\1o\0#\0\0\0/org/f"..., 2048) = 923
read(3, 0x60cca0, 2048) = -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=4, events=POLLIN}, {fd=5, events=POLLIN}, {fd=7, events=POLLIN},
{fd=8, events=POLLIN}, {fd=9, events=POLLIN}, {fd=10, events=POLLIN}, {fd=11,
events=POLLIN}, {fd=6, events=POLLIN}, {fd=12, events=POLLIN}, {fd=3,
events=POLLIN}], 10, 0) = 0
close(12) = 0
writev(3, [{"l\2\1\1\0\0\0\0\27\0\0\0\10\0\0\0\5\1u\0\27\0\0\0", 24}, {"", 0}],
2) = 24
poll([{fd=4, events=POLLIN}, {fd=5, events=POLLIN}, {fd=7, events=POLLIN},
{fd=8, events=POLLIN}, {fd=9, events=POLLIN}, {fd=10, events=POLLIN}, {fd=11,
events=POLLIN}, {fd=6, events=POLLIN}, {fd=12, events=POLLIN,
revents=POLLNVAL}, {fd=3, events=POLLIN}], 10, -1) = 1
fd 12 is closed via remove_device() but not removed from poll's fdset.
Therefore poll continues to return with the POLLNVAL code but it is
never handled. The POLLNVAL should be handled by adding G_IO_NVAL to
the g_io_add_watch_full() event mask and then also included in the error
condition at the top of event_io().
--
hald-addon-inpu making 100%-cpu-usage
https://bugs.launchpad.net/bugs/203679
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