you are going to use a try and catch in the kernel? On 10/17/19 9:42 AM, Maria Neptune wrote: > On Thu, Oct 17, 2019, 09:42 Maria Neptune <maria.elysse.n@xxxxxxxxx> wrote: > >> I hate to say it but honestly in a kernel module, your solution is not to >> do null dereferences. It's hard but you gotta. >> Otherwise I've seen quite a bit of error handling done with gotos (if >> ptr==0 goto error), which I believe compiles to similar code as try/except >> blocks. Unsure how you'd handle stuff that sends a signal like null >> dereferences in that way though. >> >> On Thu, Oct 17, 2019, 09:37 Martin Galvan <omgalvan.86@xxxxxxxxx> wrote: >> >>> Hi all, >>> >>> I'm writing a kernel module, and am trying to implement some >>> exception-handling mechanism so that the system won't oops/panic if my >>> module does e.g. a NULL dereference. The (horribly hackish) way I'm >>> doing this right now is registering a die_notifier which will set the >>> 'panic_on_oops' variable to 0 if we detect that the current PID >>> corresponds to my module. However, this is ugly for many reasons. >>> >>> What would be the "standard" way of doing this? Is there something >>> like Window's try/except blocks, where I can get back control of the >>> execution flow, without having the process die? I'm aware of >>> _ASM_EXTABLE, but I understand this only works for a single >>> instruction and has other limitations. >>> >>> _______________________________________________ >>> Kernelnewbies mailing list >>> Kernelnewbies@xxxxxxxxxxxxxxxxx >>> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >>> >> > > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -- So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological proportions in the mind of the world - RI Safir 1998 http://www.mrbrklyn.com DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002 http://www.nylxs.com - Leadership Development in Free Software http://www.brooklyn-living.com Being so tracked is for FARM ANIMALS and extermination camps, but incompatible with living as a free human being. -RI Safir 2013 _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
