Fix pahole segfault with --show_reorg_steps option

[badcf00d]

This function call seems to mistakenly use conf directly rather than cconf which protects against conf being null:

dwarves/dwarves_fprintf.c

Line 1484 in c129fa7

struct conf_fprintf cconf = conf ? *conf : conf_fprintf__defaults;

This makes pahole segfault seemingly whenever --show_reorg_steps is used

[Sinamore]

@acmel sorry to bother you, but this segfault is still an issue. Could you merge it or advise what needs to be done, if merge is not possible?

[alan-maguire]

It looks like it will need to be merged with the latest "next" branch. Can you do that and send a patch to dwarves@vger.kernel.org ? We manage things through the mailing list rather than github PRs as per the linux kernel dev process. Archives including examples can be found at https://lore.kernel.org/dwarves . Thank you!

[badcf00d]

Hi there, yep can do

[badcf00d]

Patch available here: https://lore.kernel.org/dwarves/09ac48cbfa5425e618d793b919c129e1@pfrost.me/T/#u

[alan-maguire]

got it, thanks! one more thing - our process requires a Signed-off-by: Real Name <email address> ; could you resend a v2 with subject line "PATCH v2 dwarves: Fix pahole segfault with --show_reorg_steps option" with that included?

[alan-maguire]

v2 applied now to https://git.kernel.org/pub/scm/devel/pahole/pahole.git/