| commit | 203592a0390a38f65c5ca941c389ca470d73eeeb | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Fri, 19 May 2017 17:51:55 +0000 (19 10:51 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Fri, 19 May 2017 17:51:55 +0000 (19 10:51 -0700) | ||
| tree | c2e0aa45c0b2cf718485168e5e265783efed94de | treesnapshot (tar.gz zip) |
| parent | cb803e4d0614c524dad992c101826e49ef276726 | commitdiff |
kernel - Fix excessive call stack depth on stuck interrupt
* Fix an issue where a stuck level interrupt can result in an excessively
deep call-stack and possible panic.
* Fixed by disallow thread preemption when curthread->td_nest_count
is >= 2. The critical section count test is not sufficient for the
fast-interrupt unpend -> preemption case.
* Fix an issue where a stuck level interrupt can result in an excessively
deep call-stack and possible panic.
* Fixed by disallow thread preemption when curthread->td_nest_count
is >= 2. The critical section count test is not sufficient for the
fast-interrupt unpend -> preemption case.
| sys/kern/kern_intr.c | diffblobblamehistory | |
| sys/kern/lwkt_thread.c | diffblobblamehistory |