[Bug 261707] panic: vm_page_free_prep: freeing mapped page 0xfffffe0006f80170 on 14-Current(master-n252892-e30fceb89b7)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261707

Aleksander Slomka <alex@alexslomka.xyz> changed:

           What    |Removed                     |Added
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                 CC|                            |alex@alexslomka.xyz

--- Comment #1 from Aleksander Slomka <alex@alexslomka.xyz> ---
I have a similar issue on 14-CURRENT(main-n253047-a35bdd4489b)
The panic usually happens when the system has high CPU usage i.e. when running
stress-ng or when compiling a large port.

(kgdb) backtrace
#0  __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:55
#1  doadump (textdump=textdump@entry=1) at
/usr/src/sys/kern/kern_shutdown.c:399
#2  0xffffffff80c14143 in kern_reboot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:487
#3  0xffffffff80c145ae in vpanic (fmt=0xffffffff812b9325 "vm_page_free_prep:
freeing mapped page %p", ap=<optimized out>)
    at /usr/src/sys/kern/kern_shutdown.c:920
#4  0xffffffff80c14303 in panic (fmt=<unavailable>) at
/usr/src/sys/kern/kern_shutdown.c:844
#5  0xffffffff80fac7ac in vm_page_free_prep (m=m@entry=0xfffffe000c358148) at
/usr/src/sys/vm/vm_page.c:3865
#6  0xffffffff80fa4262 in vm_page_free_toq (m=m@entry=0xfffffe000c358148) at
/usr/src/sys/vm/vm_page.c:3918
#7  0xffffffff80fa424b in vm_page_free (m=<unavailable>,
m@entry=0xfffffe000c358148) at /usr/src/sys/vm/vm_page.c:1330
#8  0xffffffff80fb0435 in vm_pageout_scan_inactive
(vmd=vmd@entry=0xffffffff81fb5540 <vm_dom>, page_shortage=3344)
    at /usr/src/sys/vm/vm_pageout.c:1637
#9  0xffffffff80fae50e in vm_pageout_inactive_dispatch (vmd=0xffffffff81fb5540
<vm_dom>, shortage=4456)
    at /usr/src/sys/vm/vm_pageout.c:1698
#10 vm_pageout_inactive (vmd=0xffffffff81fb5540 <vm_dom>, shortage=<optimized
out>, addl_shortage=<optimized out>)
    at /usr/src/sys/vm/vm_pageout.c:1747
#11 vm_pageout_worker (arg=<optimized out>, arg@entry=0x0) at
/usr/src/sys/vm/vm_pageout.c:2187
#12 0xffffffff80fadf47 in vm_pageout () at /usr/src/sys/vm/vm_pageout.c:2420
#13 0xffffffff80bcbb60 in fork_exit (callout=0xffffffff80fadd80 <vm_pageout>,
arg=0x0, frame=0xfffffe00837ccf40)
    at /usr/src/sys/kern/kern_fork.c:1102
#14 <signal handler called>
#15 0x009c693f3f3f3f52 in ?? ()

Link to core dump:
https://drive.google.com/file/d/1bxR2vFYpwh55UMebKqOontz7I9KBXGcg/view?usp=sharing

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