[Bug 230785] Page fault when if_ath module is unloaded
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230785 Adrian Chadd changed: What|Removed |Added CC||adr...@freebsd.org --- Comment #2 from Adrian Chadd --- yeah I noticed this again recently. I think I messed up when I did the initial transition thing with the if_ath modules. Lemme go see if there's an easy way to fix this or not.. -- You are receiving this mail because: You are the assignee for the bug. ___ freebsd-wireless@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-wireless To unsubscribe, send any mail to "freebsd-wireless-unsubscr...@freebsd.org"
[Bug 230785] Page fault when if_ath module is unloaded
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230785
--- Comment #1 from Ali Abdallah ---
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 0x802f5a4b in db_dump (dummy=, dummy2=, dummy3=, dummy4=) at
/usr/src/sys/ddb/db_command.c:574
#3 0x802f5819 in db_command (last_cmdp=,
cmd_table=, dopager=1) at /usr/src/sys/ddb/db_command.c:481
#4 0x802f5594 in db_command_loop () at
/usr/src/sys/ddb/db_command.c:534
#5 0x802f87ef in db_trap (type=, code=)
at /usr/src/sys/ddb/db_main.c:252
#6 0x80431e2a in kdb_trap (type=3, code=0, tf=0xfe003d985100) at
/usr/src/sys/kern/subr_kdb.c:693
#7 0x806d59dc in trap (frame=0xfe003d985100) at
/usr/src/sys/amd64/amd64/trap.c:621
#8
#9 kdb_enter (why=0x8079127e "panic", msg=) at
/usr/src/sys/kern/subr_kdb.c:479
#10 0x803e586a in vpanic (fmt=, ap=) at
/usr/src/sys/kern/kern_shutdown.c:866
#11 0x803e56a3 in panic (fmt=0x80865248
"m\201y\200\377\377\377\377") at /usr/src/sys/kern/kern_shutdown.c:804
#12 0x8067fae7 in vm_fault_hold (map=0xf80002001000,
vaddr=, fault_type=4 '\004', fault_flags=,
m_hold=0x0)
at /usr/src/sys/vm/vm_fault.c:614
#13 0x8067d4b0 in vm_fault (map=0xf80002001000, vaddr=, fault_type=4 '\004', fault_flags=0) at /usr/src/sys/vm/vm_fault.c:562
#14 0x806d5ff4 in trap_pfault (frame=0xfe003d985590, usermode=0) at
/usr/src/sys/amd64/amd64/trap.c:846
#15 0x806d54cf in trap (frame=0xfe003d985590) at
/usr/src/sys/amd64/amd64/trap.c:443
#16
#17 0x811bf0c0 in ?? ()
#18 0x810b157a in ath_intr (arg=0xfe3e4000) at
/usr/src/sys/dev/ath/if_ath.c:2106
#19 0x803af284 in intr_event_execute_handlers (p=,
ie=) at /usr/src/sys/kern/kern_intr.c:1129
#20 ithread_execute_handlers (p=, ie=) at
/usr/src/sys/kern/kern_intr.c:1142
#21 ithread_loop (arg=) at /usr/src/sys/kern/kern_intr.c:1222
#22 0x803abdc3 in fork_exit (callout=0x803af0b0 ,
arg=0xf800027e94c0, frame=0xfe003d985ac0) at
/usr/src/sys/kern/kern_fork.c:1065
#23
(kgdb) frame 18
#18 0x810b157a in ath_intr (arg=0xfe3e4000) at
/usr/src/sys/dev/ath/if_ath.c:2106
l
2106if (!ath_hal_intrpend(ah)) {/* shared irq, not for
us */
(kgdb) print ah->ah_isInterruptPending
$1 = (HAL_BOOL (*)(struct ath_hal *)) 0x811bf0c0
# kldstat
Id Refs AddressSize Name
1 79 0x8020 e81700 kernel
4 11 0x810890001c890 ath_hal.ko
53 0x810a600060c40 ath_main.ko
63 0x81107000 1c20 ath_dfs.ko
79 0x81109000aea68 wlan.ko
83 0x811b8000 6688 ath_rate.ko
92 0x811bf0008ad98 ath_hal_ar9300.ko
102 0x8124a00052058 ath_hal_ar5416.ko
113 0x8129d00039578 ath_hal_ar5212.ko
122 0x812d700015d38 ath_hal_ar5211.ko
132 0x812ed00010938 ath_hal_ar5210.ko
The 0x811bf0c0 (ar9300_is_interrupt_pending) belongs to the module
(ath_hal_ar9300) that has been just unloaded.
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[Bug 230785] Page fault when if_ath module is unloaded
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230785 Andriy Voskoboinyk changed: What|Removed |Added Keywords||panic -- You are receiving this mail because: You are the assignee for the bug. ___ freebsd-wireless@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-wireless To unsubscribe, send any mail to "freebsd-wireless-unsubscr...@freebsd.org"
[Bug 230785] Page fault when if_ath module is unloaded
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230785 Bug ID: 230785 Summary: Page fault when if_ath module is unloaded Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: wireless Assignee: wirel...@freebsd.org Reporter: ali...@gmail.com When compiling if_ath as a module. kldload if_ath followed by kldunload if_ath causes a page fault. The chip is AR9380. [ath] unloaded [ar5210] unloaded [ar5211] unloaded [ar5416] unloaded [ar5212] unloaded [ar9300] unloaded Kernel page fault with the following non-sleepable locks held: exclusive sleep mutex ath0 (ath0) r = 0 (0xfe004eea0190) locked @ /usr/src/sys/dev/ath/if_ath.c:1423 stack backtrace: #0 0x8044a2b3 at witness_debugger+0x73 #1 0x8044b691 at witness_warn+0x461 #2 0x806ce093 at trap_pfault+0x53 #3 0x806cd6aa at trap+0x2ba #4 0x806a84a5 at calltrap+0x8 #5 0x81d4c745 at ath_pci_detach+0x95 #6 0x80416d27 at device_detach+0x167 #7 0x8041629f at devclass_driver_deleted+0x4f #8 0x804161ad at devclass_delete_driver+0x8d #9 0x8041bc9f at driver_module_handler+0x10f #10 0x803c3c52 at module_unload+0x32 #11 0x803b65cb at linker_file_unload+0x23b #12 0x803b695c at linker_file_unload+0x5cc #13 0x803b782d at kern_kldunload+0xcd #14 0x806ce9c1 at amd64_syscall+0x281 #15 0x806a8d8d at fast_syscall_common+0x101 Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x81cb3180 fault code = supervisor read instruction, page not present instruction pointer = 0x20:0x81cb3180 stack pointer = 0x28:0xfe004e249708 frame pointer = 0x28:0xfe004e249730 code segment= base 0x0, limit 0xf, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags= interrupt enabled, resume, IOPL = 0 current process = 701 (kldunload) -- You are receiving this mail because: You are the assignee for the bug. ___ freebsd-wireless@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-wireless To unsubscribe, send any mail to "freebsd-wireless-unsubscr...@freebsd.org"
