[Bug 250423] sys.netipsec.tunnel.aesni_aes_gcm_128.v4 panics kernel after r366713

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250423

            Bug ID: 250423
           Summary: sys.netipsec.tunnel.aesni_aes_gcm_128.v4 panics kernel
                    after r366713
           Product: Base System
           Version: CURRENT
          Hardware: i386
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: tests
          Assignee: testing at FreeBSD.org
          Reporter: lwhsu at FreeBSD.org

Revision r366711 and r366712 are also in this build but r366713 looks mostly
related:

https://ci.freebsd.org/job/FreeBSD-head-i386-test/10945/consoleFull

sys/netipsec/tunnel/aesni_aes_gcm_128:v4  ->  aesni0:
<AES-CBC,AES-CCM,AES-GCM,AES-ICM,AES-XTS>
panic: System call sendto returning with kernel FPU ctx leaked
cpuid = 0
time = 1602724639
KDB: stack backtrace:
db_trace_self_wrapper(2,1487d700,1487d700,0,251b5388,...) at
db_trace_self_wrapper+0x28/frame 0x251b535c
vpanic(148c809,251b5394,251b5394,251b545c,13bc996,...) at vpanic+0x11a/frame
0x251b5374
panic(148c809,1432c1b,251b545c,1487d700,1487d990,...) at panic+0x14/frame
0x251b5388
syscall(251b5468,3b,3b,3b,68,...) at syscall+0x756/frame 0x251b545c
Xint0x80_syscall() at 0xffc033f9/frame 0x251b545c
--- syscall (133, FreeBSD ELF32, sys_sendto), eip = 0xffc01a98, esp =
0xffc07fe8, ebp = 0xffbf682c ---
KDB: enter: panic
[ thread pid 74925 tid 100114 ]
Stopped at      kdb_enter+0x35: movl    $0,kdb_why
db:0:kdb.enter.panic> show pcpu
cpuid        = 0
dynamic pcpu = 0x84e5c0
curthread    = 0x1487d700: pid 74925 tid 100114 critnest 1 "setkey"
curpcb       = 0x251b54c0
fpcurthread  = none
idlethread   = 0xb7e4e00: tid 100003 "idle: cpu0"
APIC ID      = 0
currentldt   = 0x50
trampstk     = 0xffc07ff0
kesp0        = 0x251b54b0
common_tssp  = 0xffc01130
tlb gen      = 1115928
curvnet      = 0
spin locks held:
db:0:kdb.enter.panic>

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