https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272401
Bug ID: 272401
Summary: 32 bit sysctl KERN_PROC_VM_LAYOUT hangs unkillable on
64 bit ARM
Product: Base System
Version: CURRENT
Hardware: arm64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Attachment #243288 text/plain
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Created attachment 243288
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sysctl hang test
Run the attached program compiled in a 32 bit chroot environment on 64 bit ARM.
It hangs unkillable in sysctl. It is so stuck that rebooting doesn't work
because the process won't die.
Tools are confused about whether the program is running or runnable. The
program does not accumulate CPU time.
The program runs fine as a native 64 bit application. Something in 32 to 64
bit translation must be broken.
Bug reported on mailing lists by Mark Millard. The original hang was in the
kern_copyin test, but sysctl was to blame.
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