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| author | Rusty Russell <rusty@rustcorp.com.au> | 2015-07-29 05:52:14 +0930 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2015-07-29 06:13:22 +0930 |
| commit | fe0d34d242fa1e0dec059e774d146a705420bc9a (patch) | |
| tree | a6e1fcef9810938b32af5079207143fe72bdbd5e /fs/char_dev.c | |
| parent | d61be4b3f2684b6d76ef8c1d28ecdeb9bb20fa8f (diff) | |
| download | op-kernel-dev-fe0d34d242fa1e0dec059e774d146a705420bc9a.zip op-kernel-dev-fe0d34d242fa1e0dec059e774d146a705420bc9a.tar.gz | |
module: weaken locking assertion for oops path.
We don't actually hold the module_mutex when calling find_module_all
from module_kallsyms_lookup_name: that's because it's used by the oops
code and we don't want to deadlock.
However, access to the list read-only is safe if preempt is disabled,
so we can weaken the assertion. Keep a strong version for external
callers though.
Fixes: 0be964be0d45 ("module: Sanitize RCU usage and locking")
Reported-by: He Kuang <hekuang@huawei.com>
Cc: stable@kernel.org
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'fs/char_dev.c')
0 files changed, 0 insertions, 0 deletions
