On 12/22/2015 4:06 AM, Sebastian Andrzej Siewior wrote:
* Yang Shi | 2015-12-14 15:06:44 [-0800]:
Mainline kernel commit 959274753857efe9c5f1ba35fe727f51e9aa128d
("x86, traps: Track entry into and exit from IST context"), introduced
ist_enter which disables preemption uncondiontionally for both
* Yang Shi | 2015-12-14 15:06:44 [-0800]:
>Mainline kernel commit 959274753857efe9c5f1ba35fe727f51e9aa128d
>("x86, traps: Track entry into and exit from IST context"), introduced
>ist_enter which disables preemption uncondiontionally for both x86-64 and
>x86-32. However, x86-32 does not have an IS
When running some ptrace single step tests on x86-32 machine, the below problem
is triggered:
BUG: sleeping function called from invalid context at
linux-rt/kernel/locking/rtmutex.c:917
in_atomic(): 1, irqs_disabled(): 0, pid: 1041, name: dummy2
INFO: lockdep is turned off.
Preemption disabled at
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