On 16 May 2017, at 19:58, Andriy Gapon wrote:
On 16/05/2017 16:49, Kristof Provost wrote:
On 16 May 2017, at 15:41, Andriy Gapon wrote:
On 10/05/2017 12:37, Kristof Provost wrote:
I have a reproducible panic on CURRENT (r318136) doing
(jupiter) # zfs send -R -v zroot/var@before-kernel-2017-04-26 | nc dual 1234
(dual) # nc -l 1234 | zfs recv -v -F tank/jupiter/var

For clarity, the receiving machine is CURRENT r318136, the sending machine is
running a somewhat older CURRENT version.

The receiving machine panics a few seconds in:

receiving full stream of zroot/var@before-kernel-2017-04-03 into
tank/jupiter/var@before-kernel-2017-04-03
panic: solaris assert: dbuf_is_metadata(db) == arc_is_metadata(buf) (0x0 == 0x1), file: /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c,
line: 2007

could you please try to revert commits related to the compressed send and see if that helps? I assume that the sending machine does not have (does not use) the
feature while the target machine is capable of the feature.

The commits are: r317648 and r317414. Mot that I really suspect that change,
but just to eliminate the possibility.

Those commits appear to be the trigger.
I’ve not changed the sender, but with those reverted I don’t see the panic any
more.

Thank you for testing.
Do you still have the old kernel / module and the crash dump?
It would interesting to poke around in frame 14.


This contains the kernel and crash files:
https://www.sigsegv.be/files/zfs_recv_kernel_crash.tar.bz2

I was running r318356 at the time of this panic.

Regards,
Kristof
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