https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276426
Bug ID: 276426
Summary: amd64: microcode update caused a page fault trying to
send data to the logger
Product: Base System
Version: 13.2-STABLE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: misc
Assignee: b...@freebsd.org
Reporter: lini...@freebsd.org
(bugmeister note: I am forking this PR from 266730. They may, or may not, be
related.)
Originally from John F. Carr 2023-07-25 00:46:35 UTC:
I saw what may be the same crash on amd64 running 12.4-CURRENT, first boot
after upgrading from 12.3. I started the microcode_update service and the
system promptly crashed.
#4 0xffffffff810d66af in trap_fatal (frame=<value optimized out>,
eva=<value optimized out>) at /data/freebsd/12/sys/amd64/amd64/trap.c:921
#5 0xffffffff810d66ff in trap_pfault (frame=0xfffffe002f78f9e0,
signo=<value optimized out>, ucode=<value optimized out>) at pcpu_aux.h:55
#6 0xffffffff810aec68 in calltrap ()
at /data/freebsd/12/sys/amd64/amd64/exception.S:289
#7 0xffffffff810d2b73 in copyout_nosmap_std ()
at /data/freebsd/12/sys/amd64/amd64/support.S:805
#8 0xffffffff80c29f2d in uiomove_faultflag (cp=0xfffffe002686a000, n=98,
uio=0xfffffe002f78fba0, nofault=<value optimized out>)
at /data/freebsd/12/sys/kern/subr_uio.c:254
#9 0xffffffff80c32333 in pipe_read (fp=0xfffff80012598550,
uio=0xfffffe002f78fba0, active_cred=<value optimized out>,
flags=<value optimized out>, td=<value optimized out>)
at /data/freebsd/12/sys/kern/sys_pipe.c:712
#10 0xffffffff80c2f3a5 in dofileread (td=<value optimized out>, fd=0,
fp=<value optimized out>, auio=0xfffffe002f78fba0,
offset=<value optimized out>, flags=<value optimized out>) at file.h:317
#11 0xffffffff80c2ef20 in sys_read (td=0xfffff8001cade740, uap=Unhandled dwarf
expression opcode 0xa3
)
at /data/freebsd/12/sys/kern/sys_generic.c:289
#12 0xffffffff810d7267 in amd64_syscall (td=0xfffff8001cade740, traced=0)
at subr_syscall.c:144
#13 0xffffffff810af58e in fast_syscall_common ()
at /data/freebsd/12/sys/amd64/amd64/exception.S:582
The active process was "logger".
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