Rishabh Bhatnagar <risbhat@xxxxxxxxxx> writes: > We are seeing deadlock in cifs code while updating volume in > cifs_reconnect. There are few fixes available in stable trees > already. This series backports some patches back to 5.4 stable. > > __schedule+0x268/0x6e0 > schedule+0x2f/0xa0 > schedule_preempt_disabled+0xa/0x10 > __mutex_lock.isra.7+0x20b/0x470 > ? dfs_cache_update_vol+0x45/0x2a0 [cifs] > dfs_cache_update_vol+0x45/0x2a0 [cifs] > cifs_reconnect+0x6f2/0xef0 [cifs] > cifs_handle_standard+0x18d/0x1b0 [cifs] > cifs_demultiplex_thread+0xa5c/0xc90 [cifs] > ? cifs_handle_standard+0x1b0/0x1b0 [cifs] > > Paulo Alcantara (SUSE) (5): > cifs: Clean up DFS referral cache > cifs: Get rid of kstrdup_const()'d paths > cifs: Introduce helpers for finding TCP connection > cifs: Merge is_path_valid() into get_normalized_path() > cifs: Fix potential deadlock when updating vol in cifs_reconnect() > > fs/cifs/dfs_cache.c | 701 +++++++++++++++++++++++--------------------- > 1 file changed, 372 insertions(+), 329 deletions(-) Looks good, thanks.
