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| author | Dan Williams <dan.j.williams@intel.com> | 2012-04-06 22:41:15 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-10 23:48:51 +0200 |
| commit | 282029c005e65ffdce3aa9f8220f88a8bbbc4dae (patch) | |
| tree | 48d488d453def3bd1c408aed1bd4bb4e18115b4c /drivers | |
| parent | sysfs: handle 'parent deleted before child added' (diff) | |
| download | linux-282029c005e65ffdce3aa9f8220f88a8bbbc4dae.tar.xz linux-282029c005e65ffdce3aa9f8220f88a8bbbc4dae.zip | |
kobject: provide more diagnostic info for kobject_add_internal() failures
1/ convert open-coded KERN_ERR+dump_stack() to WARN(), so that automated
tools pick up this warning.
2/ include the 'child' and 'parent' kobject names. This information was
useful for tracking down the case where scsi invoked device_del() on a
parent object and subsequently invoked device_add() on a child. Now the
warning looks like:
kobject_add_internal failed for target8:0:16 (error: -2 parent: end_device-8:0:24)
Pid: 2942, comm: scsi_scan_8 Not tainted 3.3.0-rc7-isci+ #2
Call Trace:
[<ffffffff8125e551>] kobject_add_internal+0x1c1/0x1f3
[<ffffffff81075149>] ? trace_hardirqs_on+0xd/0xf
[<ffffffff8125e659>] kobject_add_varg+0x41/0x50
[<ffffffff8125e723>] kobject_add+0x64/0x66
[<ffffffff8131124b>] device_add+0x12d/0x63a
[<ffffffff8125e0ef>] ? kobject_put+0x4c/0x50
[<ffffffff8132f370>] scsi_sysfs_add_sdev+0x4e/0x28a
[<ffffffff8132dce3>] do_scan_async+0x9c/0x145
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: James Bottomley <JBottomley@parallels.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions