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| author | Martin Sperl <kernel@martin.sperl.org> | 2015-05-10 07:50:45 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-05-11 19:05:27 +0100 |
| commit | 8e76ef88f607174082023f50b87fe12dcdbe5db5 (patch) | |
| tree | 080e56d5f05011b769a1b64db8ac0a5d76c6eea1 /scripts/link-vmlinux.sh | |
| parent | f8bb820da4ae863c676156627973a950129559fb (diff) | |
| download | lwn-8e76ef88f607174082023f50b87fe12dcdbe5db5.tar.gz lwn-8e76ef88f607174082023f50b87fe12dcdbe5db5.zip | |
spi: fix race freeing dummy_tx/rx before it is unmapped
Fix a race (with some kernel configurations) where a queued
master->pump_messages runs and frees dummy_tx/rx before
spi_unmap_msg is running (or is finished).
This results in the following messages:
BUG: Bad page state in process
page:db7ba030 count:0 mapcount:0 mapping: (null) index:0x0
flags: 0x200(arch_1)
page dumped because: PAGE_FLAGS_CHECK_AT_PREP flag set
...
Reported-by: Noralf Trønnes <noralf@tronnes.org>
Suggested-by: Noralf Trønnes <noralf@tronnes.org>
Tested-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'scripts/link-vmlinux.sh')
0 files changed, 0 insertions, 0 deletions