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  1. MariaDB Server
  2. MDEV-8164

Server crashes in pfs_mutex_enter_func after fil_crypt_is_closing or alike

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      enc2.opt

      --plugin-load-add=file_key_management.so --file_key_management_filename=/home/elenst/git/10.1/mysql-test/std_data/keys.txt

      enc2.test

      --source include/have_innodb.inc
      SET default_storage_engine = InnoDB;
       
      CREATE TABLE t1 (pk INT PRIMARY KEY, c VARCHAR(256));
      SET GLOBAL innodb_encrypt_tables = ON;
      SET GLOBAL innodb_encryption_threads = 1;
      CREATE TABLE t2 AS SELECT * FROM t1;
      SET GLOBAL innodb_encryption_rotation_iops = 100;
      SET GLOBAL innodb_encrypt_tables = OFF;
      CREATE OR REPLACE TABLE t2 AS SELECT * FROM t1;

      Run with --repeat=N (depends on the machine, e.g. it fails for me on 1st or 2nd attempt on my local box, but on ~10th attempt or so on perro).

      Stack trace from bb-10.1-serg commit 0dcce2bf + MDEV-8045 patch

      #3  <signal handler called>
      #4  0x00007f2f0cab113a in pfs_mutex_enter_func (mutex=0x78, file_name=0x7f2f0cccaf58 "storage/innobase/fil/fil0crypt.cc", line=972) at storage/innobase/include/sync0sync.ic:245
      #5  0x00007f2f0cab389f in fil_crypt_is_closing (space=5) at storage/innobase/fil/fil0crypt.cc:972
      #6  0x00007f2f0cab4e91 in fil_crypt_rotate_page (key_state=0x7f2efd7fedb0, state=0x7f2efd7fedc0) at storage/innobase/fil/fil0crypt.cc:1759
      #7  0x00007f2f0cab541d in fil_crypt_rotate_pages (key_state=0x7f2efd7fedb0, state=0x7f2efd7fedc0) at storage/innobase/fil/fil0crypt.cc:1926
      #8  0x00007f2f0cab5af3 in fil_crypt_thread (arg=0x0) at storage/innobase/fil/fil0crypt.cc:2143
      #9  0x00007f2f15776b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
      #10 0x00007f2f1380b95d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112

      You might get a slighly different stack trace or an assertion failure, it happened to me. Example:

      #3  <signal handler called>
      #4  0x00007fa6396b113a in pfs_mutex_enter_func (mutex=0x78, file_name=0x7fa6398caf58 "storage/innobase/fil/fil0crypt.cc", line=1565) at storage/innobase/include/sync0sync.ic:245
      #5  0x00007fa6396b490e in fil_crypt_find_page_to_rotate (key_state=0x7fa62a3fedb0, state=0x7fa62a3fedc0) at storage/innobase/fil/fil0crypt.cc:1565
      #6  0x00007fa6396b5b31 in fil_crypt_thread (arg=0x0) at storage/innobase/fil/fil0crypt.cc:2140
      #7  0x00007fa6422e1b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
      #8  0x00007fa64037695d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112

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            jplindst Jan Lindström (Inactive)
            elenst Elena Stepanova
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