I will wait with my prepared merge until #14954 gets merged.
On 9. 6. 2023 15:59, Alexander Motin wrote:
Hi Gleb,
There are two probably related PRs upstream:
https://github.com/openzfs/zfs/pull/14939
https://github.com/openzfs/zfs/pull/14954
On 09.06.2023 00:57, Gleb Smirnoff wrote:
On Thu, Jun 08, 2023 at 07:56:07PM -0700, Gleb Smirnoff wrote:
T> I'm switching to INVARIANTS kernel right now and will see if that
panics earlier.
This is what I got with INVARIANTS:
panic: VERIFY3(dev->l2ad_hand <= dev->l2ad_evict) failed
(225142071296 <= 225142063104)
cpuid = 17
time = 1686286015
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2c/frame
0xfffffe0160dcea90
kdb_backtrace() at kdb_backtrace+0x46/frame 0xfffffe0160dceb40
vpanic() at vpanic+0x21f/frame 0xfffffe0160dcebe0
spl_panic() at spl_panic+0x4d/frame 0xfffffe0160dcec60
l2arc_write_buffers() at l2arc_write_buffers+0xcda/frame
0xfffffe0160dcedf0
l2arc_feed_thread() at l2arc_feed_thread+0x547/frame 0xfffffe0160dceec0
fork_exit() at fork_exit+0x122/frame 0xfffffe0160dcef30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0160dcef30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
Uptime: 1m4s
Dumping 5473 out of 65308
MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%
(kgdb) frame 4
#4 0xffffffff804342ea in l2arc_write_buffers
(spa=0xfffffe022e942000, dev=0xfffffe023116a000, target_sz=16777216)
at /usr/src/FreeBSD/sys/contrib/openzfs/module/zfs/arc.c:9445
9445 ASSERT3U(dev->l2ad_hand, <=, dev->l2ad_evict);
(kgdb) p dev
$1 = (l2arc_dev_t *) 0xfffffe023116a000
(kgdb) p dev->l2ad_hand
$2 = 225142071296
(kgdb) p dev->l2ad_evict
$3 = 225142063104
(kgdb) p *dev
value of type `l2arc_dev_t' requires 66136 bytes, which is more than
max-value-size
Never seen kgdb not being able to print a structure that reported to
be too big.
