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| author | Sven Wegener <sven.wegener@stealer.net> | 2008-08-10 09:14:05 +0000 |
|---|---|---|
| committer | Sven Wegener <sven.wegener@stealer.net> | 2008-08-11 11:44:38 +0200 |
| commit | bc0fde2fad007a81ecffceb25a893a6c3f1ed767 (patch) | |
| tree | 961823abcc7cabcfde900fdc58d8a19178c0c5a7 /net/ipv4 | |
| parent | 8123b421e8ed944671d7241323ed3198cccb4041 (diff) | |
| download | linux-bc0fde2fad007a81ecffceb25a893a6c3f1ed767.tar.gz linux-bc0fde2fad007a81ecffceb25a893a6c3f1ed767.tar.bz2 linux-bc0fde2fad007a81ecffceb25a893a6c3f1ed767.zip | |
ipvs: Fix possible deadlock in sync code
Commit 998e7a76804b7a273a0460c2cdd5a51fa9856717 ("ipvs: Use kthread_run()
instead of doing a double-fork via kernel_thread()") introduced a possible
deadlock in the sync code. We need to use the _bh versions for the lock, as the
lock is also accessed from a bottom half.
Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Acked-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/ipvs/ip_vs_sync.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/ipvs/ip_vs_sync.c b/net/ipv4/ipvs/ip_vs_sync.c index 45e9bd96c286..a652da2c3200 100644 --- a/net/ipv4/ipvs/ip_vs_sync.c +++ b/net/ipv4/ipvs/ip_vs_sync.c @@ -904,9 +904,9 @@ int stop_sync_thread(int state) * progress of stopping the master sync daemon. */ - spin_lock(&ip_vs_sync_lock); + spin_lock_bh(&ip_vs_sync_lock); ip_vs_sync_state &= ~IP_VS_STATE_MASTER; - spin_unlock(&ip_vs_sync_lock); + spin_unlock_bh(&ip_vs_sync_lock); kthread_stop(sync_master_thread); sync_master_thread = NULL; } else if (state == IP_VS_STATE_BACKUP) { |