That is strange. Are you doing it from within your home path when in the Terminal? Finally hit on the right combination to Google an answer! Removed the component, and I am back in business! Turns out it was a problem with an old version of Instant Hijack a component of the Audio Hijack application. It was doing some "bad" kernel patching. I tried to post this before with a link to the article where I found the answer, but that post went into "waiting for approval"-land, so I'm leaving the link out this time in hopes that it will post.
Bus errors are rare nowadays on x86 and occur when your processor cannot even attempt the memory access requested, typically:. Segmentation faults occur when accessing memory which does not belong to your process.
They are very common and are typically the result of:. PS: To be more precise, it is not manipulating the pointer itself that will cause issues. It's accessing the memory it points to dereferencing. A segfault is accessing memory that you're not allowed to access. It's read-only, you don't have permission, etc A bus error is trying to access memory that can't possibly be there. You've used an address that's meaningless to the system, or the wrong kind of address for that operation.
The mmap spec says that:. References within the address range starting at pa and continuing for len bytes to whole pages following the end of an object shall result in delivery of a SIGBUS signal.
This was mentioned at: What is a bus error? SA0 fields, I have summarized the related docs a bit further here. I think that since most[? From: Here. A BUS error need not arise from the instructions within the program's code. This can happen when you are running a binary and during the execution, the binary is modified overwritten by a build or deleted, etc.
A simple way to check if this is the cause is by launching a couple of instances of the same binary form a build output directory, and running a build after they start. Both the running instances would crash with a SIGBUS error shortly after the build has finished and replaced the binary the one that both the instances are currently running. This is because OS swaps memory pages and in some cases, the binary might not be entirely loaded in memory. These crashes would occur when the OS tries to fetch the next page from the same binary, but the binary has changed since the last time it was read.
For instance:. This snippet tries to write the bit integer value 0xdeadf00d to an address that is most likely not properly aligned, and will generate a bus error on architectures that are "picky" in this regard. The Intel x86 is, by the way, not such an architecture.
It would allow the access albeit execute it more slowly. In case you don't remember the docs strcat appends the second argument to the first by changing the first argument flip the arguments and it works fine. On linux this gives a segmentation fault as expected , but on OS X it gives a bus error. I really don't know. An attempt to access memory that isn't physically present would also give a bus error, but you won't see this if you're using a processor with an MMU and an OS that's not buggy, because you won't have any non-existent memory mapped to your process's address space.
In general, it means the CPU bus could not complete a command, or suffered a conflict, but that could mean a whole range of things, depending on the environment and code being run. This worked well in one thread, but when using openMP this drives to bus error, because Mac OS X has very limited stack size for non-main threads.
Generally we can say that. A SIGBUS is when the memory mapping succeeds and you hit an issue with the underlying memory system out of memory, No memory at that location, alignment, smmu prevents access, etc.. Hmm both machines are almost clean installations of Ubuntu I'm now using the command I started with.. That's weird. I should have tested if it works right before adding my user to docker group..
I guess it's not a CPU issue after all Hey man! Interesting bug, first new bug I've seen in ages! I will test this shortly thank you for reporting. Ahh just in case, by "the same host system" I meant the same distro with the same version Same error.
Them I rebooted to normal boot. Backup hung at approx 50Gb. A few iterations left out. Anyone in Apple Land have a clue? More Less. Reply I have this question too 48 I have this question too Me too 48 Me too.
All replies Drop Down menu. Loading page content. User profile for user: Linc Davis Linc Davis. Jul 25, AM in response to NuTachyon In response to NuTachyon Almost certainly the startup drive is failing, or there is some other internal hardware fault. Keeping your confidential data secure during hardware repair Apple also recommends that you deauthorize a device in the iTunes Store before having it serviced. Reply Helpful Thread reply - more options Link to this Post.
Is it documented anywhere what a Bus error 10 means? Reply Helpful 2 Thread reply - more options Link to this Post. User profile for user: William H. Magill1 William H.
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