Date: Thu, 8 Jun 2023 21:57:12 -0700 From: Gleb Smirnoff <glebius@freebsd.org> To: current@freebsd.org Cc: mm@freebsd.org Subject: Re: panic(s) in ZFS on CURRENT Message-ID: <ZIKxKOtpI3q8j0mI@FreeBSD.org> In-Reply-To: <ZIKUx4Mhp4yrhd-y@FreeBSD.org>
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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.
--
Gleb Smirnoff
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