[Bug 291625] panic: vm_page.c:3776: _vm_page_pqstate_commit_requeue: Bad tailq NEXT(0xc000000004389ca0->tqh_last) != NULL

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291625

            Bug ID: 291625
           Summary: panic: vm_page.c:3776:
                    _vm_page_pqstate_commit_requeue: Bad tailq
                    NEXT(0xc000000004389ca0->tqh_last) != NULL
           Product: Base System
           Version: 16.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Keywords: crash
          Severity: Affects Only Me
          Priority: ---
         Component: powerpc
          Assignee: ppc@FreeBSD.org
          Reporter: ivy@FreeBSD.org

while building ports, with no other system activity:

panic: /src/bsd/main/sys/vm/vm_page.c:3776: _vm_page_pqstate_commit_requeue:
Bad tailq NEXT(0xc000000004389ca0->tqh_last) != NULL
cpuid = 100
time = 1765625991
KDB: stack backtrace:
0xc0080006524cbec0: at vpanic+0x1ac
0xc0080006524cbf70: at panic+0x40
0xc0080006524cbfa0: at vm_page_pqbatch_submit+0x988
0xc0080006524cc0a0: at vm_page_pqbatch_submit+0x2bc
0xc0080006524cc150: at vm_page_pqstate_commit+0x134
0xc0080006524cc1d0: at vm_page_activate+0xbc
0xc0080006524cc260: at vm_fault+0x1aa0
0xc0080006524cc4d0: at vm_fault_trap+0x8c
0xc0080006524cc570: at trap+0xb34
0xc0080006524cc620: at trap+0x3b0
0xc0080006524cc750: at powerpc_interrupt+0x1cc
0xc0080006524cc7e0: user DSI read trap @ 0x8013e8000 by 0x801089960:
srr1=0x900000000280f933
            r1=0xfffffbfffd510 cr=0x28200a00 xer=0 ctr=0 r2=0x8010bfe30
sr=0x40000 frame=0xc0080006524cc810
KDB: enter: panic
[ thread pid 30199 tid 110323 ]
Stopped at      kdb_enter+0x70: ori     r0, r0, 0x0
db>

hardware is a Raptor Talos II, 44 cores x 4-way SMT (176 threads).

src is a16fdef54c10d887381ab9e56bc09f6dd42d6fea from 2025-12-12, GENERIC64LE
(debug) kernel.

i'll see if i can get kgdb installed to get more information from the dump.

-- 
You are receiving this mail because:
You are the assignee for the bug.