On Thu, Jan 22, 2015 at 03:05:17PM -0800, a...@linux-foundation.org wrote:
> The mm-of-the-moment snapshot 2015-01-22-15-04 has been uploaded to
> 
>    http://www.ozlabs.org/~akpm/mmotm/
> 
qemu:sh fails to shut down.

bisect log:

# bad: [03586ad04b2170ee816e6936981cc7cd2aeba129] pci: test for unexpectedly 
disabled bridges
# good: [ec6f34e5b552fb0a52e6aae1a5afbbb1605cc6cc] Linux 3.19-rc5
git bisect start 'HEAD' 'v3.19-rc5'
# bad: [d113ba21d15c7d3615fd88490d1197615bb39fc0] mm: remove lock validation 
check for MADV_FREE
git bisect bad d113ba21d15c7d3615fd88490d1197615bb39fc0
# good: [17351d1625a5030fa16f1346b77064c03b51f107] mm:add KPF_ZERO_PAGE flag 
for /proc/kpageflags
git bisect good 17351d1625a5030fa16f1346b77064c03b51f107
# good: [ad18ad1fce6f241a9cbd4adfd6b16c9283181e39] memcg: add BUILD_BUG_ON() 
for string tables
git bisect good ad18ad1fce6f241a9cbd4adfd6b16c9283181e39
# bad: [aa7e7cbfa43b74f6faef04ff730b5098544a4f77] mm/compaction: enhance 
tracepoint output for compaction begin/end
git bisect bad aa7e7cbfa43b74f6faef04ff730b5098544a4f77
# good: [a40d0d2cf21e2714e9a6c842085148c938bf36ab] mm: memcontrol: remove 
unnecessary soft limit tree node test
git bisect good a40d0d2cf21e2714e9a6c842085148c938bf36ab
# good: [4ec4aa2e07c1d6eee61f6cace29401c6febcb6c5] mm: make FIRST_USER_ADDRESS 
unsigned long on all archs
git bisect good 4ec4aa2e07c1d6eee61f6cace29401c6febcb6c5
# bad: [22310c209483224a64436a6e815a86feda681659] mm: account pmd page tables 
to the process
git bisect bad 22310c209483224a64436a6e815a86feda681659
# good: [19a41261b1dcd8d12372d9c57c2035144608a599] arm: define 
__PAGETABLE_PMD_FOLDED for !LPAE
git bisect good 19a41261b1dcd8d12372d9c57c2035144608a599
# first bad commit: [22310c209483224a64436a6e815a86feda681659] mm: account pmd 
page tables to the process

---

qemu:microblaze generates warnings to the console.

WARNING: CPU: 0 PID: 32 at mm/mmap.c:2858 exit_mmap+0x184/0x1a4()

with various call stacks. See
http://server.roeck-us.net:8010/builders/qemu-microblaze-mmotm/builds/15/steps/qemubuildcommand/logs/stdio
for details.

bisect log:

# bad: [03586ad04b2170ee816e6936981cc7cd2aeba129] pci: test for unexpectedly 
disabled bridges
# good: [ec6f34e5b552fb0a52e6aae1a5afbbb1605cc6cc] Linux 3.19-rc5
git bisect start 'HEAD' 'v3.19-rc5'
# bad: [d113ba21d15c7d3615fd88490d1197615bb39fc0] mm: remove lock validation 
check for MADV_FREE
git bisect bad d113ba21d15c7d3615fd88490d1197615bb39fc0
# good: [17351d1625a5030fa16f1346b77064c03b51f107] mm:add KPF_ZERO_PAGE flag 
for /proc/kpageflags
git bisect good 17351d1625a5030fa16f1346b77064c03b51f107
# good: [ad18ad1fce6f241a9cbd4adfd6b16c9283181e39] memcg: add BUILD_BUG_ON() 
for string tables
git bisect good ad18ad1fce6f241a9cbd4adfd6b16c9283181e39
# bad: [aa7e7cbfa43b74f6faef04ff730b5098544a4f77] mm/compaction: enhance 
tracepoint output for compaction begin/end
git bisect bad aa7e7cbfa43b74f6faef04ff730b5098544a4f77
# good: [a40d0d2cf21e2714e9a6c842085148c938bf36ab] mm: memcontrol: remove 
unnecessary soft limit tree node test
git bisect good a40d0d2cf21e2714e9a6c842085148c938bf36ab
# good: [4ec4aa2e07c1d6eee61f6cace29401c6febcb6c5] mm: make FIRST_USER_ADDRESS 
unsigned long on all archs
git bisect good 4ec4aa2e07c1d6eee61f6cace29401c6febcb6c5
# bad: [22310c209483224a64436a6e815a86feda681659] mm: account pmd page tables 
to the process
git bisect bad 22310c209483224a64436a6e815a86feda681659
# good: [19a41261b1dcd8d12372d9c57c2035144608a599] arm: define 
__PAGETABLE_PMD_FOLDED for !LPAE
git bisect good 19a41261b1dcd8d12372d9c57c2035144608a599
# first bad commit: [22310c209483224a64436a6e815a86feda681659] mm: account pmd 
page tables to the process

If there is anything I can do to help debugging, please let me know.

Guenter
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