https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238113
Bug ID: 238113
Summary: snd_hda(4) NULL dereference in attach when loaded as
module on powerpc64
Product: Base System
Version: CURRENT
Hardware: powerpc
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Loading snd_hda(4) on powerpc64 as a module causes a NULL dereference in
hdaa_attach() on powerpc64. It works fine when built into the kernel, and
loads correctly as a module on powerpc(32) and powerpcspe.
The backtrace points to hdac_if.h:43, which is in HDAC_CODEC_COMMAND().
It appears the KOBJLOOKUP() fails, returning a NULL pointer. There may be a
bug in the module loading on powerpc64.
A workaround was committed in r348250, compiling snd_hda(4) into GENERIC64,
just as is done in amd64's GENERIC.
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