David van Moolenbroek 2109df2759 VM: fix race condition communicating with VM ...

After processing certain asynchronous requests from VFS, VM would send
an asynchronous reply without supplying the AMF_NOREPLY flag.  As a
result, this asynchronous reply could be taken as the result of an
ipc_sendrec() call, causing the entire VM/VFS communication to become
desynchronized.  The end result was a deadlock-induced panic during a
later request.

This bug was exposed because of the higher-than-usual concurrency
level in the NetBSD rc scripts.  The fix consists of properly setting
the AMF_NOREPLY flag for asynchronous replies.

Change-Id: Iafafe2fdd67f212ecbf27a53862cefba2e4cf7e8

2017-02-23 11:27:42 +00:00

..

arch

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acl.c

VM: hide harmless ACL warning for RS at startup

2015-09-17 17:14:58 +00:00

alloc.c

…

break.c

Retire env.h

2017-02-16 10:22:27 +00:00

cache.c

libfsdriver: support mmap on FSes with no device

2014-11-15 11:19:52 +00:00

cache.h

libfsdriver: support mmap on FSes with no device

2014-11-15 11:19:52 +00:00

cavl_if.h

…

cavl_impl.h

…

exit.c

Retire env.h

2017-02-16 10:22:27 +00:00

fdref.c

…

fdref.h

…

fork.c

Retire env.h

2017-02-16 10:22:27 +00:00

glo.h

Annotations and tweaks for live update

2015-09-17 17:13:38 +00:00

main.c

Retire env.h

2017-02-16 10:22:27 +00:00

Makefile

Preparations for PAE support

2016-08-04 09:24:42 +02:00

mem_anon_contig.c

vm: allow split of mem_anon_contig region

2014-09-01 15:31:19 +02:00

mem_anon.c

…

mem_cache.c

VM: allocate cache pages in mmap region

2015-09-17 14:09:06 +00:00

mem_directphys.c

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mem_file.c

libminixfs: better support for read errors and EOF

2015-08-14 18:39:26 +00:00

mem_shared.c

VM: mem_shared: allow re-pagefault

2014-09-03 14:32:54 +02:00

memlist.h

…

memtype.h

…

mmap.c

Retire env.h

2017-02-16 10:22:27 +00:00

pagefaults.c

VM: fix race condition communicating with VM

2017-02-23 11:27:42 +00:00

pagetable.c

Retire env.h

2017-02-16 10:22:27 +00:00

pb.c

…

phys_region.h

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proto.h

PM: generic process event publish/subscribe system

2016-01-16 14:04:10 +01:00

pt.h

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region.c

VM: report resource usage with VM usage info

2016-01-13 20:32:41 +01:00

region.h

vm: Improve live update support.

2015-09-16 11:06:41 +00:00

regionavl_defs.h

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regionavl.c

…

regionavl.h

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rs.c

Retire env.h

2017-02-16 10:22:27 +00:00

sanitycheck.h

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slaballoc.c

Retire env.h

2017-02-16 10:22:27 +00:00

unavl.h

…

util.h

…

utility.c

Retire env.h

2017-02-16 10:22:27 +00:00

vfs.c

Retire env.h

2017-02-16 10:22:27 +00:00

vm.h

vm: Improve live update support.

2015-09-16 11:06:41 +00:00

vmproc.h

PM: generic process event publish/subscribe system

2016-01-16 14:04:10 +01:00