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SubjectRe: input0: bad kobj_uevent_env content in show_uevent()
On Sun, 2 Sep 2012 16:34:02 +0800, Fengguang Wu wrote:
> It's more than the input device that can trigger the panic.
> Here is another trace which panics on accessing dmi/id/uevent:
>
> [ 32.380795] sysfs_read_file: /sys/devices/virtual/dmi/id/uevent
> [ 32.399379] dmi id: uevent 73 env[1677721600]: id/.../id
> [ 32.400780] uevent 0 env[0]: (null)
> [ 32.401695] uevent 7 env[1]: (null)
> ...
> [ 32.478415] general protection fault: 0000 [#1] PREEMPT
> [ 32.479953] CPU 0
> [ 32.480433] Pid: 114, comm: trinity-child0 Not tainted 3.6.0-rc4-bisect2-00001-gb6d86d3-dirty #26 Bochs Bochs
> [ 32.482995] RIP: 0010:[<ffffffff81266c33>] [<ffffffff81266c33>] strnlen+0x23/0x70
> ...
> [ 32.486234] Call Trace:
> [ 32.486234] [<ffffffff81268d5c>] string.isra.4+0x4c/0x120
> [ 32.486234] [<ffffffff81269f19>] vsnprintf+0x2c9/0x900
> [ 32.486234] [<ffffffff8126a9c9>] vscnprintf+0x19/0x50
> [ 32.486234] [<ffffffff8105f8c7>] vprintk_emit+0xe7/0x750
> [ 32.486234] [<ffffffff81a49ba9>] printk+0x4f/0x58
> [ 32.486234] [<ffffffff8150522b>] show_uevent+0x1cb/0x220
> [ 32.486234] [<ffffffff81501dcb>] dev_attr_show+0x2b/0x90
> [ 32.486234] [<ffffffff81174bea>] ? sysfs_read_file+0x18a/0x320
> [ 32.486234] [<ffffffff810f2974>] ? __get_free_pages+0x24/0xc0
> [ 32.486234] [<ffffffff81174c2d>] sysfs_read_file+0x1cd/0x320

I can't reproduce this, sorry, so I can't look into it. If it takes
special steps to reproduce, please tell me, as I wasn't part of the
original discussion.

--
Jean Delvare


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