Workaround bad locking design:
do not try to lock/unlock destroyed/non-existsing mutex. PR: kern/103569 Reviewed by: guido Approved by: glebius (mentor) Silence from: darrenr MFC: 2 week
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=163027
@ -481,7 +481,8 @@ int mode;
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}
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SPL_NET(s);
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READ_ENTER(&ipf_global);
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if (fr_running > 0)
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READ_ENTER(&ipf_global);
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error = fr_ioctlswitch(unit, data, cmd, mode);
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if (error != -1) {
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@ -514,7 +515,10 @@ int mode;
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else
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(void) ipldetach();
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} else {
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error = ipldetach();
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if (fr_running <= 0)
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error = 0;
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else
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error = ipldetach();
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if (error == 0)
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fr_running = -1;
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}
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@ -627,7 +631,9 @@ int mode;
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break;
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}
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RWLOCK_EXIT(&ipf_global);
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if (fr_running > 0)
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if (mtx_owned(&(&ipf_global)->ipf_lk))
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RWLOCK_EXIT(&ipf_global);
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SPL_X(s);
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return error;
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