Roel Kluin
Email: roel.kluin@gmail.com)
I wrote a few tools to do a multiline (git-)grep. You have to source [wiki:roelkluin/cvars cvars] to use it. Do the searches in your git Linux kernel directory.
see [wiki:roelkluin/cvars_howto gres howto] for more examples.
Some functions' return codes should be audited, the scripts below searches for code sections where this lacks.
Z="request_region kmalloc vmalloc kzalloc scsi_register create_proc_entry" for z in $Z; do echo "---[ $z ]---" gres -B1 -A20 "^((.* (@w) =)? (\( @V \** \) )*)? $z \(" \ "@Q2(\**@w) = (\**@w = )*(\( @V \** \) )* $z \(...\) ;.* (return|[&|(]) (\1 [=\!]= NULL|\!? \1|NULL [=\!]= \1) [&|)?;]" \ "@Q2(\**@w = )+(\( @V \** \) )* $z \(...\) ;" done | less Z="request_irq register_netdev misc_register create_proc_profile kernel_thread do_fork" for z in $Z; do echo "---[ $z ]---" gres -B1 -A20 "^((.* (@w) =)? (\( @V \** \) )*)? $z \(" \ "@Q2(\**@w) = (\**@w = )*(\( @V \** \) )* $z \(...\) ;.* (return|[&|(]) (\1 (<|[\!>=]=) 0|\!? \1|0 (>|[\!<=]=) \1) [)&|?;]" \ "@Q2(\**@w = )+(\( @V \** \) )* $z \(...\) ;" done | less