https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230785
--- Comment #1 from Ali Abdallah <ali.abdal...@suse.com> ---
I had a closer look into the issue I'm having. The detaching order of the
various if_ath* and ath* modules is broken.
#0 __curthread () at /usr/src/sys/amd64/include/pcpu.h:234
#1 doadump (textdump=0) at /usr/src/sys/kern/kern_shutdown.c:371
#2 0xffffffff802f5a4b in db_dump (dummy=<optimized out>, dummy2=<optimized
out>, dummy3=<unavailable>, dummy4=<unavailable>) at
/usr/src/sys/ddb/db_command.c:574
#3 0xffffffff802f5819 in db_command (last_cmdp=<optimized out>,
cmd_table=<optimized out>, dopager=1) at /usr/src/sys/ddb/db_command.c:481
#4 0xffffffff802f5594 in db_command_loop () at
/usr/src/sys/ddb/db_command.c:534
#5 0xffffffff802f87ef in db_trap (type=<optimized out>, code=<optimized out>)
at /usr/src/sys/ddb/db_main.c:252
#6 0xffffffff80431e2a in kdb_trap (type=3, code=0, tf=0xfffffe003d985100) at
/usr/src/sys/kern/subr_kdb.c:693
#7 0xffffffff806d59dc in trap (frame=0xfffffe003d985100) at
/usr/src/sys/amd64/amd64/trap.c:621
#8 <signal handler called>
#9 kdb_enter (why=0xffffffff8079127e "panic", msg=<optimized out>) at
/usr/src/sys/kern/subr_kdb.c:479
#10 0xffffffff803e586a in vpanic (fmt=<optimized out>, ap=<optimized out>) at
/usr/src/sys/kern/kern_shutdown.c:866
#11 0xffffffff803e56a3 in panic (fmt=0xffffffff80865248 <vt_conswindow+16>
"m\201y\200\377\377\377\377") at /usr/src/sys/kern/kern_shutdown.c:804
#12 0xffffffff8067fae7 in vm_fault_hold (map=0xfffff80002001000,
vaddr=<optimized out>, fault_type=4 '\004', fault_flags=<optimized out>,
m_hold=0x0)
at /usr/src/sys/vm/vm_fault.c:614
#13 0xffffffff8067d4b0 in vm_fault (map=0xfffff80002001000, vaddr=<optimized
out>, fault_type=4 '\004', fault_flags=0) at /usr/src/sys/vm/vm_fault.c:562
#14 0xffffffff806d5ff4 in trap_pfault (frame=0xfffffe003d985590, usermode=0) at
/usr/src/sys/amd64/amd64/trap.c:846
#15 0xffffffff806d54cf in trap (frame=0xfffffe003d985590) at
/usr/src/sys/amd64/amd64/trap.c:443
#16 <signal handler called>
#17 0xffffffff811bf0c0 in ?? ()
#18 0xffffffff810b157a in ath_intr (arg=0xfffffe00003e4000) at
/usr/src/sys/dev/ath/if_ath.c:2106
#19 0xffffffff803af284 in intr_event_execute_handlers (p=<optimized out>,
ie=<optimized out>) at /usr/src/sys/kern/kern_intr.c:1129
#20 ithread_execute_handlers (p=<optimized out>, ie=<optimized out>) at
/usr/src/sys/kern/kern_intr.c:1142
#21 ithread_loop (arg=<optimized out>) at /usr/src/sys/kern/kern_intr.c:1222
#22 0xffffffff803abdc3 in fork_exit (callout=0xffffffff803af0b0 <ithread_loop>,
arg=0xfffff800027e94c0, frame=0xfffffe003d985ac0) at
/usr/src/sys/kern/kern_fork.c:1065
#23 <signal handler called>
(kgdb) frame 18
#18 0xffffffff810b157a in ath_intr (arg=0xfffffe00003e4000) at
/usr/src/sys/dev/ath/if_ath.c:2106
l
2106 if (!ath_hal_intrpend(ah)) { /* shared irq, not for
us */
(kgdb) print ah->ah_isInterruptPending
$1 = (HAL_BOOL (*)(struct ath_hal *)) 0xffffffff811bf0c0
# kldstat
Id Refs Address Size Name
1 79 0xffffffff80200000 e81700 kernel
4 11 0xffffffff81089000 1c890 ath_hal.ko
5 3 0xffffffff810a6000 60c40 ath_main.ko
6 3 0xffffffff81107000 1c20 ath_dfs.ko
7 9 0xffffffff81109000 aea68 wlan.ko
8 3 0xffffffff811b8000 6688 ath_rate.ko
9 2 0xffffffff811bf000 8ad98 ath_hal_ar9300.ko
10 2 0xffffffff8124a000 52058 ath_hal_ar5416.ko
11 3 0xffffffff8129d000 39578 ath_hal_ar5212.ko
12 2 0xffffffff812d7000 15d38 ath_hal_ar5211.ko
13 2 0xffffffff812ed000 10938 ath_hal_ar5210.ko
The 0xffffffff811bf0c0 (ar9300_is_interrupt_pending) belongs to the module
(ath_hal_ar9300) that has been just unloaded.
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