Uladzislau Rezki (Sony) 817662f9bd rcu: Return early if callback is not specified ...

[ Upstream commit 33b6a1f155d627f5bd80c7485c598ce45428f74f ]

Currently the call_rcu() API does not check whether a callback
pointer is NULL. If NULL is passed, rcu_core() will try to invoke
it, resulting in NULL pointer dereference and a kernel crash.

To prevent this and improve debuggability, this patch adds a check
for NULL and emits a kernel stack trace to help identify a faulty
caller.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-07-10 16:03:17 +02:00

..

Kconfig

rcu: Employ jiffies-based backstop to callback time limit

2023-05-11 13:42:39 -07:00

Kconfig.debug

rcu: Allow up to five minutes expedited RCU CPU stall-warning timeouts

2023-01-09 12:09:52 -08:00

Makefile

rcuperf: Change rcuperf to rcuscale

2020-08-24 18:39:24 -07:00

rcu_segcblist.c

rcu: Throttle callback invocation based on number of ready callbacks

2023-01-03 17:28:34 -08:00

rcu_segcblist.h

rcu: Throttle callback invocation based on number of ready callbacks

2023-01-03 17:28:34 -08:00

rcu.h

rcu: Dump memory object info if callback function is invalid

2024-08-29 17:33:23 +02:00

rcuscale.c

rcuscale: Do a proper cleanup if kfree_scale_init() fails

2024-12-09 10:31:50 +01:00

rcutorture.c

rcutorture: Fix rcu_torture_fwd_cb_cr() data race

2024-08-14 13:58:41 +02:00

refscale.c

refscale: Add a "jiffies" test

2023-07-14 15:01:04 -07:00

srcutiny.c

rcu: Dump memory object info if callback function is invalid

2024-08-29 17:33:23 +02:00

srcutree.c

rcu: Dump memory object info if callback function is invalid

2024-08-29 17:33:23 +02:00

sync.c

rcu/sync: Use call_rcu_hurry() instead of call_rcu

2022-11-29 14:04:33 -08:00

tasks.h

rcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()

2024-11-08 16:28:22 +01:00

tiny.c

rcu: Dump memory object info if callback function is invalid

2024-08-29 17:33:23 +02:00

tree_exp.h

rcu/exp: Handle RCU expedited grace period kworker allocation failure

2024-03-26 18:19:17 -04:00

tree_nocb.h

rcu/nocb: Fix rcuog wake-up from offline softirq

2024-10-17 15:24:30 +02:00

tree_plugin.h

rcu: handle unstable rdp in rcu_read_unlock_strict()

2025-06-04 14:42:13 +02:00

tree_stall.h

rcu/cpu_stall_cputime: fix the hardirq count for x86 architecture

2025-06-19 15:28:03 +02:00

tree.c

rcu: Return early if callback is not specified

2025-07-10 16:03:17 +02:00

tree.h

rcu/cpu_stall_cputime: fix the hardirq count for x86 architecture

2025-06-19 15:28:03 +02:00

update.c

Merge branch 'stall.2023.01.09a' into HEAD

2023-02-02 16:40:07 -08:00