upowerd is consuming 100% of CPU

[Dima Ryazanov]

It may have started when I plugged in an iPad 2.

Backtrace from gdb:

(gdb) bt
#0 0x00007ffa83c3467c in __libc_send (fd=<optimized out>, buf=<optimized out>, n=<optimized out>, flags=<optimized out>) at ../sysdeps/unix/sysv/linux/x86_64/send.c:33
#1 0x00007ffa816a3d2b in usbmuxd_send (sfd=<optimized out>, data=<optimized out>, len=37, sent_bytes=0x7fffd341761c) at /build/buildd/usbmuxd-1.0.7/libusbmuxd/libusbmuxd.c:853
#2 0x00007ffa830b013d in internal_connection_send (connection=<optimized out>, data=<optimized out>, len=<optimized out>, sent_bytes=<optimized out>) at idevice.c:274
#3 0x00007ffa830b021a in internal_ssl_write (transport=0x2250d60, buffer=0x22721f0 "\027\003", length=37) at idevice.c:508
#4 0x00007ffa81ad1508 in ?? () from /usr/lib/x86_64-linux-gnu/libgnutls.so.26
#5 0x00007ffa81acd9d9 in _gnutls_send_int () from /usr/lib/x86_64-linux-gnu/libgnutls.so.26
#6 0x00007ffa830b066e in idevice_connection_send (connection=<optimized out>, data=<optimized out>, len=4, sent_bytes=0x7fffd341781c) at idevice.c:305
#7 0x00007ffa830b1f65 in internal_plist_send (client=0x224c7e0, plist=0x225d380, binary=<optimized out>) at property_list_service.c:143
#8 0x00007ffa830b2e46 in lockdownd_send (client=<optimized out>, plist=<optimized out>) at lockdown.c:288
#9 0x00007ffa830b2f01 in lockdownd_stop_session (client=0x2253190, session_id=0x225b930 "39F72847-12C5-459B-874B-83345EEDBC17") at lockdown.c:161
#10 0x00007ffa830b39cc in lockdownd_client_free (client=0x2253190) at lockdown.c:201
#11 0x00000000004127a5 in ?? ()
#12 0x0000000000412864 in ?? ()
#13 0x00007ffa8330c23b in g_timeout_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3907
#14 0x00007ffa8330aa5d in g_main_dispatch (context=0x221ff30) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:2441
#15 g_main_context_dispatch (context=0x221ff30) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3011
#16 0x00007ffa8330b258 in g_main_context_iterate (context=0x221ff30, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3089
#17 0x00007ffa8330b792 in g_main_loop_run (loop=0x223d500) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3297
#18 0x0000000000406a2b in ?? ()
#19 0x00007ffa82b2230d in __libc_start_main (main=0x406730, argc=1, ubp_av=0x7fffd3417c68, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffd3417c58) at libc-start.c:226
#20 0x0000000000406b71 in ?? ()
#21 0x00007fffd3417c58 in ?? ()
#22 0x000000000000001c in ?? ()
#23 0x0000000000000001 in ?? ()
#24 0x00007fffd3418f46 in ?? ()
#25 0x0000000000000000 in ?? ()

strace:

write(2, "usbmuxd_send: Error -1 when send"..., 49) = 49
sendto(15, "\27\3\0\0 :\34i\rfEA>$\322+\37\6&\313\310\316\231\204\264;-\315hU=\306"..., 37, 0, NULL, 0) = -1 EPIPE (Broken pipe)
--- SIGPIPE (Broken pipe) @ 0 (0) ---
write(2, "usbmuxd_send: Error -1 when send"..., 49) = 49
sendto(15, "\27\3\0\0 :\34i\rfEA>$\322+\37\6&\313\310\316\231\204\264;-\315hU=\306"..., 37, 0, NULL, 0) = -1 EPIPE (Broken pipe)
--- SIGPIPE (Broken pipe) @ 0 (0) ---
write(2, "usbmuxd_send: Error -1 when send"..., 49) = 49
sendto(15, "\27\3\0\0 :\34i\rfEA>$\322+\37\6&\313\310\316\231\204\264;-\315hU=\306"..., 37, 0, NULL, 0) = -1 EPIPE (Broken pipe)
--- SIGPIPE (Broken pipe) @ 0 (0) ---

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: upower 0.9.13-1
Uname: Linux 3.3.0-rc3 x86_64
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Tue Mar 27 13:22:24 2012
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: upower
UpgradeStatus: Upgraded to oneiric on 2011-09-02 (206 days ago)

[Mike Myers (fristle)]

This may be the same issue as https://bugs.launchpad.net/ubuntu/+source/upower/+bug/861642

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.