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| author | Paolo Bonzini <pbonzini@redhat.com> | 2015-08-11 11:33:24 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-09-09 15:34:56 +0200 |
| commit | 9fd1a94888cd6a559f95c3596ec1ac28b74838c1 (patch) | |
| tree | cecbe1ad9b5c5593e85b6ced7498f5d88f5078ad /util/cutils.c | |
| parent | 8fd19e6cfd5b6cdf028c6ac2ff4157ed831ea3a6 (diff) | |
cpu-exec: fix lock hierarchy for user-mode emulation
tb_lock has to be taken inside the mmap_lock (example:
tb_invalidate_phys_range is called by target_mmap), but
tb_link_page is taking the mmap_lock and it is called
with the tb_lock held.
To fix this, take the mmap_lock in tb_find_slow, not
in tb_link_page.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'util/cutils.c')
0 files changed, 0 insertions, 0 deletions