12.1-RELEASE-p7 panic in zio_free_issue_4_6

[Christian Kratzer]

Hi,

On Thu, 29 Oct 2020, Andriy Gapon wrote:
> Okay, let's see if we can get a vmcore.
> Otherwise, this is just a guess-work on my part.
> The problem could be very different from my initial impression.

got the data off the pool in ro and mounted again RW

Fatal trap 12: page fault while in kernel mode
cpuid = 7; apic id = 11
fault virtual address   = 0x30
fault code              = supervisor write data, page not present
instruction pointer     = 0x20:0xffffffff824b89e4
stack pointer           = 0x28:0xfffffe012d6c7be0
frame pointer           = 0x28:0xfffffe012d6c7be0
code segment            = base 0x0, limit 0xfffff, type 0x1b
                         = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 3185 (zio_free_issue_6_3)
trap number             = 12
panic: page fault
cpuid = 7
time = 1603989616
KDB: stack backtrace:
#0 0xffffffff80c0a8f5 at kdb_backtrace+0x65
#1 0xffffffff80bbeb1b at vpanic+0x17b
#2 0xffffffff80bbe993 at panic+0x43
#3 0xffffffff8108f911 at trap_fatal+0x391
#4 0xffffffff8108f96f at trap_pfault+0x4f
#5 0xffffffff8108efb6 at trap+0x286
#6 0xffffffff81066f38 at calltrap+0x8
#7 0xffffffff8255e672 at zio_ddt_free+0x52
#8 0xffffffff8255ba2c at zio_execute+0xac
#9 0xffffffff80c1cee4 at taskqueue_run_locked+0x144
#10 0xffffffff80c1e2d6 at taskqueue_thread_loop+0xb6
#11 0xffffffff80b8044e at fork_exit+0x7e
#12 0xffffffff81067f6e at fork_trampoline+0xe
Uptime: 1h13m32s
Dumping 8797 out of 131020 MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%
Dump complete
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...
cpu_reset: Restarting BSP
cpu_reset_proxy: Stopped CPU 7


This is on 12.2-RELEASE now and debug symbols are in place.

I will be archiving the artefacts and will get back with proper tracebacks shortly.

Let me know what you need and how you would like to receive it.

Greetings
Christian

-- 
Christian Kratzer                   CK Software GmbH
Email:   ck at cksoft.de               Wildberger Weg 24/2
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