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migration: Unlock mutex in error case

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We were not unlocking bitmap mutex on the error case.  To fix it
forever change to enclose the code with WITH_QEMU_LOCK_GUARD().
Coverity CID 1523750.

Fixes: a2326705e5 ("migration: Stop migration immediately in RDMA error paths")
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231103074245.55166-1-quintela@redhat.com>
This commit is contained in:
Juan Quintela 2023-11-03 08:42:45 +01:00
parent ceddc48278
commit 0983125b40
1 changed files with 55 additions and 55 deletions
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4
migration/ram.c
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@ -3030,7 +3030,7 @@ static int ram_save_iterate(QEMUFile *f, void *opaque)
* MAX_WAIT (if curious, further see commit 4508bd9ed8053ce) below, which
* guarantees that we'll at least released it in a regular basis.
*/
qemu_mutex_lock(&rs->bitmap_mutex);
WITH_QEMU_LOCK_GUARD(&rs->bitmap_mutex) {
WITH_RCU_READ_LOCK_GUARD() {
if (ram_list.version != rs->last_version) {
ram_state_reset(rs);
@ -3094,7 +3094,7 @@ static int ram_save_iterate(QEMUFile *f, void *opaque)
i++;
}
}
qemu_mutex_unlock(&rs->bitmap_mutex);
}
/*
* Must occur before EOS (or any QEMUFile operation)