linux/kernel/rcu
Zqiang 98ea203287 rcutorture: Fix memory leak in rcu_test_debug_objects()
The kernel memory leak detector located the following:

unreferenced object 0xffff95d941135b50 (size 16):
  comm "swapper/0", pid 1, jiffies 4294667610 (age 1367.451s)
  hex dump (first 16 bytes):
    f0 c6 c2 bd d9 95 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000bc81d9b1>] kmem_cache_alloc_trace+0x2f6/0x500
    [<00000000d28be229>] rcu_torture_init+0x1235/0x1354
    [<0000000032c3acd9>] do_one_initcall+0x51/0x210
    [<000000003c117727>] kernel_init_freeable+0x205/0x259
    [<000000003961f965>] kernel_init+0x1a/0x120
    [<000000001998f890>] ret_from_fork+0x22/0x30

This is caused by the rcu_test_debug_objects() function allocating an
rcu_head structure, then failing to free it.  This commit therefore adds
the needed kfree() after the last use of this structure.

Signed-off-by: Zqiang <qiang1.zhang@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2022-06-21 15:57:04 -07:00
..
Kconfig Merge branch 'exp.2022.05.11a' into HEAD 2022-05-11 11:49:35 -07:00
Kconfig.debug Merge branch 'exp.2022.05.11a' into HEAD 2022-05-11 11:49:35 -07:00
Makefile rcuperf: Change rcuperf to rcuscale 2020-08-24 18:39:24 -07:00
rcu_segcblist.c rcu: Clarify fill-the-gap comment in rcu_segcblist_advance() 2022-04-11 17:28:48 -07:00
rcu_segcblist.h rcu: Mark writes to the rcu_segcblist structure's ->flags field 2022-02-14 10:36:58 -08:00
rcu.h sysctl changes for v5.19-rc1 2022-05-26 16:57:20 -07:00
rcuscale.c rcuscale: Allow rcuscale without RCU Tasks Rude/Trace 2022-04-20 16:53:19 -07:00
rcutorture.c rcutorture: Fix memory leak in rcu_test_debug_objects() 2022-06-21 15:57:04 -07:00
refscale.c refscale: Allow refscale without RCU Tasks Rude/Trace 2022-04-20 16:53:19 -07:00
srcutiny.c srcu: Prevent redundant __srcu_read_unlock() wakeup 2021-11-30 17:28:16 -08:00
srcutree.c srcu: Drop needless initialization of sdp in srcu_gp_start() 2022-05-03 10:20:57 -07:00
sync.c rcu_sync: Fix comment to properly reflect rcu_sync_exit() behavior 2022-04-20 16:51:11 -07:00
tasks.h rcu-tasks: Handle sparse cpu_possible_mask in rcu_tasks_invoke_cbs() 2022-04-11 17:06:43 -07:00
tiny.c srcu: Initialize SRCU after timers 2021-05-10 16:03:35 -07:00
tree_exp.h rcu: Move expedited grace period (GP) work to RT kthread_worker 2022-05-11 11:47:10 -07:00
tree_nocb.h rcu/nocb: Initialize nocb kthreads only for boot CPU prior SMP initialization 2022-04-11 17:05:58 -07:00
tree_plugin.h Merge branches 'docs.2022.04.20a', 'fixes.2022.04.20a', 'nocb.2022.04.11b', 'rcu-tasks.2022.04.11b', 'srcu.2022.05.03a', 'torture.2022.04.11b', 'torture-tasks.2022.04.20a' and 'torturescript.2022.04.20a' into HEAD 2022-05-03 10:21:40 -07:00
tree_stall.h printk changes for 5.19 2022-05-25 10:32:08 -07:00
tree.c Merge branch 'exp.2022.05.11a' into HEAD 2022-05-11 11:49:35 -07:00
tree.h Merge branch 'exp.2022.05.11a' into HEAD 2022-05-11 11:49:35 -07:00
update.c rcu: Introduce CONFIG_RCU_EXP_CPU_STALL_TIMEOUT 2022-05-11 11:38:50 -07:00