For a fairly rare case of a client doing an ExchangeID after a hard reboot,
the old confirmed clientid still exists, but some clients use a new
co_verifier. For this case, the server was not freeing up the sessions on
the old confirmed clientid.
This patch fixes this case. It also adds two LIST_INIT() macros, which are
actually no-ops, since the structure is malloc()d with M_ZERO so the pointer
is already set to NULL.
It should have minimal impact, since the only way I could exercise this
code path was by doing a hard power cycle (pulling the plus) on a machine
running Linux with a NFSv4.1 mount on the server.
Originally spotted during testing of the ESXi 6.5 client.
Tested by: andreas.nagy@frequentis.com
MFC after: 2 months
When an NFSv4.1 session is busy due to a callback being in progress,
nfsrv_freesession() should return NFSERR_BACKCHANBUSY instead of NFS_OK.
The only effect this has is that the DestroySession operation will report
the failure for this case and this probably has little or no effect on a
client. Spotted by inspection and no failures related to this have been
reported.
MFC after: 2 months
- Create getblkx(9) variant of getblk(9) which can return error.
- Add GB_NOSPARSE flag for getblk()/getblkx() which requests that BMAP
was performed before the buffer is created, and EJUSTRETURN returned
in case the requested block does not exist.
- Make ffs_read() use GB_NOSPARSE to avoid instantiating buffer (and
allocating the pages for it), copying from zero_region instead.
The end result is less page allocations and buffer recycling when a
hole is read, which is important for some benchmarks.
Requested and reviewed by: jeff
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D14917
It appears that domain information is set correctly independent
of whether or not NUMA is defined. However, there is no memory
backing secondary domains leading to allocation failure.
Reported by: pho@, np@
Approved by: sbruno@
unwind_frame() may be instrumented by FBT, leading to recursion into
dtrace_probe(). Manually inline unwind_frame() as we do with stack
unwinding code for other architectures.
Submitted by: Domagoj Stolfa
Reviewed by: manu
MFC after: 1 week
Sponsored by: DARPA / AFRL
Differential Revision: https://reviews.freebsd.org/D15359
According to the Intel SDM (Volme 3, 9.11.7) the BIOS signature MSR
should be zeroed before executing cpuid (although in practice it does
not seem to matter).
PR: 192487
Submitted by: Dan Lukes
Reported by: Henrique de Moraes Holschuh
MFC after: 3 days
Don't enable regulator on attach but dealt with them on power_up/power_off
Only set the voltage for the signaling regulator since I don't have boards
that can change the supply voltage.
Enable 1.8v signaling voltage.
Only do a reset of the controller at attach and init it at power_up.
We use to enable some interrupts in reset, only enable the interrupts
we are interested in when doing a request.
While here remove the regulators handling in power_on as it is very wrong
and will be dealt with in another commit.
Tested on: A31, A64
I've been holding back on this because 1.7.0 requires OpenSSL 1.1.0 or
newer for full DANE support. But we can't wait forever, and nothing in
base uses DANE anyway, so here we go.
is executed on the right stack already. No copy from the entry stack
to the kstack must be performed for vm86 bios call code to function.
To access the pcb flags on kernel entry, unconditionally switch to
kernel address space if vm86 mode is detected.
This fixes very early vm86 bios calls, typically done when boot is
performed by boot2 without loader, and kernel falls back to BIOS calls
to get SMAP.
Reported by: bde
Sponsored by: The FreeBSD Foundation
PCB_VM86CALL pcb flag not set should be treated same as return to
userspace.
Most important, the address space must be switched. This fixes
usermode vm86 operations after the 4/4 split.
Sponsored by: The FreeBSD Foundation
exception code is copied to the trampoline.
The correct value is then copied to trampoline automatically, so
tramp_idleptd_reloced can be eliminated.
This will allow to use the same exception entry code to handle traps
from vm86 bios calls on early boot stage, as after the trampoline is
configured.
Sponsored by: The FreeBSD Foundation
Record common_tssd, the descriptor to be written in GDT to point to
the common TSS, before LTR is executed. The LTR instruction sets the
loaded descriptor type to 386 TSS busy, which traps on reloads.
Sponsored by: The FreeBSD Foundation
The profile for send(2)/recv(2) observation has been refactored to
eliminate alloca() in favor of translations available in HEAD.
Sponsored by: Smule, Inc.
Knowing the value of execname during these probes is of some value even
if it is commonly the interrupt kernel thread (intr[12]) -- quite often
it is not, but that depends on the probe.
Sponsored by: Smule, Inc.
