[
https://issues.apache.org/jira/browse/MYNEWT-708?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Christopher Collins updated MYNEWT-708:
---------------------------------------
Description:
Now that main() runs after the OS is started, tasks may preempt the main task
as soon as they are created. If such a task expects all packages to have been
initialized, then a crash or other unpredictable behavior will occur.
Here is an example crash that happens when the BLE link layer task runs before
the host package is fully initialized:
{noformat}
Program received signal SIGTRAP, Trace/breakpoint trap.
__assert_func (file=<optimized out>, line=<optimized out>, func=<optimized
out>, e=<optimized out>) at kernel/os/src/arch/cortex_m4/os_fault.c:137
137 asm("bkpt");
(gdb) whe
#0 __assert_func (file=<optimized out>, line=<optimized out>, func=<optimized
out>, e=<optimized out>) at kernel/os/src/arch/cortex_m4/os_fault.c:137
#1 0x00019f2e in ble_hci_trans_ll_evt_tx (hci_ev=<optimized out>) at
net/nimble/transport/ram/src/ble_hci_ram.c:91
#2 0x0000ea5e in ble_ll_hci_send_noop () at
net/nimble/controller/src/ble_ll_hci.c:106
#3 0x0000a438 in ble_ll_task (arg=<optimized out>) at
net/nimble/controller/src/ble_ll.c:1008
#4 0x00000000 in ?? ()
{noformat}
was:
Now that main() runs after the OS is started, tasks may preempt the main task
as soon as they are created. If such a task expects all packages to have been
initialized, then a crash or other unpredictable behavior will occur.
Here is an example crash that happens when the BLE link layer task runs before
the host package is fully initialized:
{noformat}
Program received signal SIGTRAP, Trace/breakpoint trap.
__assert_func (file=<optimized out>, line=<optimized out>, func=<optimized
out>, e=<optimized out>) at kernel/os/src/arch/cortex_m4/os_fault.c:137
137 asm("bkpt");
(gdb) whe
#0 __assert_func (file=<optimized out>, line=<optimized out>, func=<optimized
out>, e=<optimized out>) at kernel/os/src/arch/cortex_m4/os_fault.c:137
#1 0x00019f2e in ble_hci_trans_ll_evt_tx (hci_ev=<optimized out>) at
net/nimble/transport/ram/src/ble_hci_ram.c:91
#2 0x0000ea5e in ble_ll_hci_send_noop () at
net/nimble/controller/src/ble_ll_hci.c:106
#3 0x0000a438 in ble_ll_task (arg=<optimized out>) at
net/nimble/controller/src/ble_ll.c:1008
#4 0x00000000 in ?? ()
(gdb)
#0 __assert_func (file=<optimized out>, line=<optimized out>, func=<optimized
out>, e=<optimized out>) at kernel/os/src/arch/cortex_m4/os_fault.c:137
#1 0x00019f2e in ble_hci_trans_ll_evt_tx (hci_ev=<optimized out>) at
net/nimble/transport/ram/src/ble_hci_ram.c:91
#2 0x0000ea5e in ble_ll_hci_send_noop () at
net/nimble/controller/src/ble_ll_hci.c:106
#3 0x0000a438 in ble_ll_task (arg=<optimized out>) at
net/nimble/controller/src/ble_ll.c:1008
#4 0x00000000 in ?? ()
{noformat}
> Lock scheduler during init
> --------------------------
>
> Key: MYNEWT-708
> URL: https://issues.apache.org/jira/browse/MYNEWT-708
> Project: Mynewt
> Issue Type: Bug
> Reporter: Christopher Collins
> Fix For: v1_1_0_rel
>
>
> Now that main() runs after the OS is started, tasks may preempt the main task
> as soon as they are created. If such a task expects all packages to have
> been initialized, then a crash or other unpredictable behavior will occur.
> Here is an example crash that happens when the BLE link layer task runs
> before the host package is fully initialized:
> {noformat}
> Program received signal SIGTRAP, Trace/breakpoint trap.
> __assert_func (file=<optimized out>, line=<optimized out>, func=<optimized
> out>, e=<optimized out>) at kernel/os/src/arch/cortex_m4/os_fault.c:137
> 137 asm("bkpt");
> (gdb) whe
> #0 __assert_func (file=<optimized out>, line=<optimized out>,
> func=<optimized out>, e=<optimized out>) at
> kernel/os/src/arch/cortex_m4/os_fault.c:137
> #1 0x00019f2e in ble_hci_trans_ll_evt_tx (hci_ev=<optimized out>) at
> net/nimble/transport/ram/src/ble_hci_ram.c:91
> #2 0x0000ea5e in ble_ll_hci_send_noop () at
> net/nimble/controller/src/ble_ll_hci.c:106
> #3 0x0000a438 in ble_ll_task (arg=<optimized out>) at
> net/nimble/controller/src/ble_ll.c:1008
> #4 0x00000000 in ?? ()
> {noformat}
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
