[BUG?] dev_close() is called with locks held

[Kirill Korotaev]

Hello,

looks like a bug in 2.4/2.6 kernels:

1. dev_close() function is blocking. it calls schedule() inside and 
calls blocking dev_deactivate() function.

2. But... call chain
dev_ioctl() -> dev_ifsioc() -> dev_change_flags() calls dev_close() 
under read_lock(&dev_base_lock)...

Bug?

Kirill

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