Are DDB custom function hooks broken in head?

[Sean Bruno]

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On 07/15/15 13:24, Sean Bruno wrote:
> 
> I added a couple of DDB_HOOKS to em(4) recently and they definitely
> used to work.  :-)
> 
> 
> KDB: enter: Break to debugger [ thread pid 11 tid 100006 ] Stopped
> at      kdb_alt_break_internal+0x197:   movq    $0,kdb_why db>
> help ahd_dump        ahd_in          ahd_out         ahd_pause 
> ahd_sunit       ahd_unpause     alltrace        b break
> bt              c               call capture         continue
> countfreebufs   d delete          dhwatch         dump
> dwatch em_dump_queue   em_reset_dev    examine         findstack 
> gdb             halt            hwatch          kill match
> next            p               panic print           ps
> reboot          reset run             s               script
> scripts search          set             show            step t
> textdump        thread          trace unscript        until
> w               watch watchdog        where           write
> x db> call em_dump_queue Symbol not found KDB: reentering KDB:
> stack backtrace: db_trace_self_wrapper() at
> db_trace_self_wrapper+0x2b/frame 0xfffffe00f7128160 kdb_reenter()
> at kdb_reenter+0x33/frame 0xfffffe00f7128170 db_term() at
> db_term+0x88/frame 0xfffffe00f7128190 db_unary() at
> db_unary+0x74/frame 0xfffffe00f71281b0 db_mult_expr() at
> db_mult_expr+0x1b/frame 0xfffffe00f71281f0 db_add_expr() at
> db_add_expr+0x1b/frame 0xfffffe00f7128230 db_expression() at
> db_expression+0x1d/frame 0xfffffe00f7128280 db_fncall() at
> db_fncall+0x17/frame 0xfffffe00f7128320 db_command() at
> db_command+0x361/frame 0xfffffe00f71283e0 db_command_loop() at
> db_command_loop+0x64/frame 0xfffffe00f71283f0 db_trap() at
> db_trap+0xdb/frame 0xfffffe00f7128480 kdb_trap() at
> kdb_trap+0x194/frame 0xfffffe00f7128510 trap() at trap+0x4a1/frame
> 0xfffffe00f7128720 calltrap() at calltrap+0x8/frame
> 0xfffffe00f7128720 --- trap 0x3, rip = 0xffffffff80716767, rsp =
> 0xfffffe00f71287e0, rbp = 0xfffffe00f7128810 --- 
> kdb_alt_break_internal() at kdb_alt_break_internal+0x197/frame 
> 0xfffffe00f7128810 kdb_alt_break() at kdb_alt_break+0xb/frame
> 0xfffffe00f7128820 uart_intr_rxready() at
> uart_intr_rxready+0x99/frame 0xfffffe00f7128850 uart_intr() at
> uart_intr+0x111/frame 0xfffffe00f7128890 intr_event_handle() at
> intr_event_handle+0x9c/frame 0xfffffe00f71288e0 
> intr_execute_handlers() at intr_execute_handlers+0x48/frame 
> 0xfffffe00f7128910 lapic_handle_intr() at
> lapic_handle_intr+0x68/frame 0xfffffe00f7128950 Xapic_isr1() at
> Xapic_isr1+0xba/frame 0xfffffe00f7128950 --- interrupt, rip =
> 0xffffffff80aa29f6, rsp = 0xfffffe00f7128a10, rbp =
> 0xfffffe00f7128a20 --- acpi_cpu_c1() at acpi_cpu_c1+0x6/frame
> 0xfffffe00f7128a20 acpi_cpu_idle() at acpi_cpu_idle+0x304/frame
> 0xfffffe00f7128a70 cpu_idle_acpi() at cpu_idle_acpi+0x3f/frame
> 0xfffffe00f7128a90 cpu_idle() at cpu_idle+0x92/frame
> 0xfffffe00f7128ab0 sched_idletd() at sched_idletd+0x4d5/frame
> 0xfffffe00f7128bb0 fork_exit() at fork_exit+0x84/frame
> 0xfffffe00f7128bf0 fork_trampoline() at fork_trampoline+0xe/frame
> 0xfffffe00f7128bf0 --- trap 0, rip = 0, rsp = 0xfffffe00f7128cb0,
> rbp = 0 ---
> 
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> 
> 


Or ... you know ... I could just type "em_dump_queue" without the
"call" in it ... if I wanted it to actually work.

Thanks to those of you poking me off list with my derpy-ness today.  :-)

sean
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