Geert Uytterhoeven 2f5af4ab7d lightnvm: fix uninitialized pointer in nvm_remove_tgt() ...

With gcc 4.1:

    drivers/lightnvm/core.c: In function ‘nvm_remove_tgt’:
    drivers/lightnvm/core.c:510: warning: ‘t’ is used uninitialized in this function

Indeed, if no NVM devices have been registered, t will be an
uninitialized pointer, and may be dereferenced later.  A call to
nvm_remove_tgt() can be triggered from userspace by issuing the
NVM_DEV_REMOVE ioctl on the lightnvm control device.

Fix this by preinitializing t to NULL.

Fixes: 843f2edbdd ("lightnvm: do not remove instance under global lock")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2019-06-21 03:14:30 -06:00

30 KiB

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