linux-kernel - Re: [PATCH v3 1/7] staging: r8188eu: remove unused member free_bss

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Date:   Fri, 22 Apr 2022 19:13:35 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Jaehee Park <jhpark1013@...il.com>
Cc:     Pavel Skripkin <paskripkin@...il.com>, Larry.Finger@...inger.net,
        phil@...lpotter.co.uk, gregkh@...uxfoundation.org,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        outreachy@...ts.linux.dev
Subject: Re: [PATCH v3 1/7] staging: r8188eu: remove unused member
 free_bss_buf

On Wed, Apr 20, 2022 at 08:39:26PM +0300, Dan Carpenter wrote:
> > >    Another is idea is that when you have pnetwork++ and it's a NULL
> > >    pointer then print an error message.  Or even potentially NULL.
> > >    There are various heuristics to use which mean that "A reasonable
> > >    person would think this could be NULL".
> > > 

I wrote the check but it turns out none of the results are that
interesting after all.

drivers/atm/horizon.c:1844 hrz_init() warn: incrementing NULL pointer 'mem' rl='0'
drivers/scsi/qla2xxx/qla_iocb.c:665 qla24xx_build_scsi_type_6_iocbs() warn: incrementing NULL pointer 'cur_dsd' rl='4097-ptr_max'
drivers/scsi/be2iscsi/be_main.c:2686 beiscsi_init_wrb_handle() warn: incrementing NULL pointer 'pwrb' rl='0-u64max'
drivers/net/ethernet/nvidia/forcedeth.c:2304 nv_start_xmit() warn: incrementing NULL pointer 'tmp_tx_ctx' rl='0-u64max'
drivers/net/ethernet/nvidia/forcedeth.c:2482 nv_start_xmit_optimized() warn: incrementing NULL pointer 'tmp_tx_ctx' rl='0-u64max'
arch/x86/boot/cmdline.c:66 __cmdline_find_option() warn: incrementing NULL pointer 'opptr' rl='0,4096-ptr_max'
arch/x86/boot/compressed/../cmdline.c:66 __cmdline_find_option() warn: incrementing NULL pointer 'opptr' rl='0,4096-ptr_max'
arch/x86/lib/cmdline.c:84 __cmdline_find_option_bool() warn: incrementing NULL pointer 'opptr' rl='1295896293336907776,2458024882201202688,3889929980400390144,6141874131669250048,6180548506814574592,6275458169940578304,6344884530654208000'
arch/x86/lib/cmdline.c:167 __cmdline_find_option() warn: incrementing NULL pointer 'opptr' rl='0-u64max'

regards,
dan carpenter