path: root/meta/recipes-kernel/lttng/lttng-modules/0001-Update-for-kernel-5.7-use-vmalloc_sync_mappings-on-k.patch

From a2cc0e06330e55eefe668f7d6370de6d3177a907 Mon Sep 17 00:00:00 2001
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Tue, 5 May 2020 13:38:31 -0400
Subject: [PATCH] Update for kernel 5.7: use vmalloc_sync_mappings on kernels
 >= 5.7

Upstream-Status: Backport [https://github.com/lttng/lttng-modules/commit/da0fcb1497ff2437407883647a8a0bba12bd0f91]

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
---
 lib/ringbuffer/ring_buffer_backend.c |  4 +--
 lttng-abi.c                          |  4 +--
 lttng-context-callstack.c            |  2 +-
 lttng-context-cgroup-ns.c            |  2 +-
 lttng-context-cpu-id.c               |  2 +-
 lttng-context-egid.c                 |  2 +-
 lttng-context-euid.c                 |  2 +-
 lttng-context-gid.c                  |  2 +-
 lttng-context-hostname.c             |  2 +-
 lttng-context-interruptible.c        |  2 +-
 lttng-context-ipc-ns.c               |  2 +-
 lttng-context-migratable.c           |  2 +-
 lttng-context-mnt-ns.c               |  2 +-
 lttng-context-need-reschedule.c      |  2 +-
 lttng-context-net-ns.c               |  2 +-
 lttng-context-nice.c                 |  2 +-
 lttng-context-perf-counters.c        |  2 +-
 lttng-context-pid-ns.c               |  2 +-
 lttng-context-pid.c                  |  2 +-
 lttng-context-ppid.c                 |  2 +-
 lttng-context-preemptible.c          |  2 +-
 lttng-context-prio.c                 |  2 +-
 lttng-context-procname.c             |  2 +-
 lttng-context-sgid.c                 |  2 +-
 lttng-context-suid.c                 |  2 +-
 lttng-context-tid.c                  |  2 +-
 lttng-context-uid.c                  |  2 +-
 lttng-context-user-ns.c              |  2 +-
 lttng-context-uts-ns.c               |  2 +-
 lttng-context-vegid.c                |  2 +-
 lttng-context-veuid.c                |  2 +-
 lttng-context-vgid.c                 |  2 +-
 lttng-context-vpid.c                 |  2 +-
 lttng-context-vppid.c                |  2 +-
 lttng-context-vsgid.c                |  2 +-
 lttng-context-vsuid.c                |  2 +-
 lttng-context-vtid.c                 |  2 +-
 lttng-context-vuid.c                 |  2 +-
 lttng-context.c                      |  2 +-
 lttng-events.c                       | 10 +++---
 lttng-ring-buffer-client.h           |  4 +--
 lttng-ring-buffer-metadata-client.h  |  4 +--
 lttng-syscalls.c                     |  2 +-
 probes/lttng-kprobes.c               |  2 +-
 probes/lttng-kretprobes.c            |  2 +-
 probes/lttng-tracepoint-event-impl.h |  4 +--
 probes/lttng-uprobes.c               |  2 +-
 probes/lttng.c                       |  2 +-
 tests/probes/lttng-test.c            |  2 +-
 wrapper/vmalloc.h                    | 49 ++++++++++++++++++++++++++--
 50 files changed, 104 insertions(+), 61 deletions(-)

diff --git a/lib/ringbuffer/ring_buffer_backend.c b/lib/ringbuffer/ring_buffer_backend.c
index d4bec25..d232b7f 100644
--- a/lib/ringbuffer/ring_buffer_backend.c
+++ b/lib/ringbuffer/ring_buffer_backend.c
@@ -17,7 +17,7 @@
 #include <linux/vmalloc.h>
 
 #include <wrapper/mm.h>
-#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_all() */
+#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_mappings() */
 #include <wrapper/ringbuffer/config.h>
 #include <wrapper/ringbuffer/backend.h>
 #include <wrapper/ringbuffer/frontend.h>
@@ -156,7 +156,7 @@ int lib_ring_buffer_backend_allocate(const struct lib_ring_buffer_config *config
 	 * If kmalloc ever uses vmalloc underneath, make sure the buffer pages
 	 * will not fault.
 	 */
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	wrapper_clear_current_oom_origin();
 	vfree(pages);
 	return 0;
diff --git a/lttng-abi.c b/lttng-abi.c
index b63e376..826ecab 100644
--- a/lttng-abi.c
+++ b/lttng-abi.c
@@ -30,7 +30,7 @@
 #include <linux/uaccess.h>
 #include <linux/slab.h>
 #include <linux/err.h>
-#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_all() */
+#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_mappings() */
 #include <wrapper/ringbuffer/vfs.h>
 #include <wrapper/ringbuffer/backend.h>
 #include <wrapper/ringbuffer/frontend.h>
@@ -1938,7 +1938,7 @@ int __init lttng_abi_init(void)
 {
 	int ret = 0;
 
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	lttng_clock_ref();
 
 	ret = lttng_tp_mempool_init();
diff --git a/lttng-context-callstack.c b/lttng-context-callstack.c
index 195990a..ba35a39 100644
--- a/lttng-context-callstack.c
+++ b/lttng-context-callstack.c
@@ -141,7 +141,7 @@ int __lttng_add_callstack_generic(struct lttng_ctx **ctx,
 	field->record = lttng_callstack_record;
 	field->priv = fdata;
 	field->destroy = lttng_callstack_destroy;
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 
 error_create:
diff --git a/lttng-context-cgroup-ns.c b/lttng-context-cgroup-ns.c
index 81486e5..f324b7e 100644
--- a/lttng-context-cgroup-ns.c
+++ b/lttng-context-cgroup-ns.c
@@ -97,7 +97,7 @@ int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx)
 	field->record = cgroup_ns_record;
 	field->get_value = cgroup_ns_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_cgroup_ns_to_ctx);
diff --git a/lttng-context-cpu-id.c b/lttng-context-cpu-id.c
index 3778225..6e2f3f4 100644
--- a/lttng-context-cpu-id.c
+++ b/lttng-context-cpu-id.c
@@ -68,7 +68,7 @@ int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx)
 	field->record = cpu_id_record;
 	field->get_value = cpu_id_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_cpu_id_to_ctx);
diff --git a/lttng-context-egid.c b/lttng-context-egid.c
index 51536e2..bdcebb9 100644
--- a/lttng-context-egid.c
+++ b/lttng-context-egid.c
@@ -70,7 +70,7 @@ int lttng_add_egid_to_ctx(struct lttng_ctx **ctx)
 	field->record = egid_record;
 	field->get_value = egid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_egid_to_ctx);
diff --git a/lttng-context-euid.c b/lttng-context-euid.c
index 1bcd53f..c2b8dcd 100644
--- a/lttng-context-euid.c
+++ b/lttng-context-euid.c
@@ -70,7 +70,7 @@ int lttng_add_euid_to_ctx(struct lttng_ctx **ctx)
 	field->record = euid_record;
 	field->get_value = euid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_euid_to_ctx);
diff --git a/lttng-context-gid.c b/lttng-context-gid.c
index da54207..c355e8c 100644
--- a/lttng-context-gid.c
+++ b/lttng-context-gid.c
@@ -70,7 +70,7 @@ int lttng_add_gid_to_ctx(struct lttng_ctx **ctx)
 	field->record = gid_record;
 	field->get_value = gid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_gid_to_ctx);
diff --git a/lttng-context-hostname.c b/lttng-context-hostname.c
index e485aa9..17dbd57 100644
--- a/lttng-context-hostname.c
+++ b/lttng-context-hostname.c
@@ -101,7 +101,7 @@ int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx)
 	field->record = hostname_record;
 	field->get_value = hostname_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_hostname_to_ctx);
diff --git a/lttng-context-interruptible.c b/lttng-context-interruptible.c
index f3da199..8bd279a 100644
--- a/lttng-context-interruptible.c
+++ b/lttng-context-interruptible.c
@@ -75,7 +75,7 @@ int lttng_add_interruptible_to_ctx(struct lttng_ctx **ctx)
 	field->record = interruptible_record;
 	field->get_value = interruptible_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_interruptible_to_ctx);
diff --git a/lttng-context-ipc-ns.c b/lttng-context-ipc-ns.c
index 78d5966..40b901b 100644
--- a/lttng-context-ipc-ns.c
+++ b/lttng-context-ipc-ns.c
@@ -96,7 +96,7 @@ int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx)
 	field->record = ipc_ns_record;
 	field->get_value = ipc_ns_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_ipc_ns_to_ctx);
diff --git a/lttng-context-migratable.c b/lttng-context-migratable.c
index e3d8ede..65154b8 100644
--- a/lttng-context-migratable.c
+++ b/lttng-context-migratable.c
@@ -68,7 +68,7 @@ int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx)
 	field->record = migratable_record;
 	field->get_value = migratable_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_migratable_to_ctx);
diff --git a/lttng-context-mnt-ns.c b/lttng-context-mnt-ns.c
index b5bb955..cb59776 100644
--- a/lttng-context-mnt-ns.c
+++ b/lttng-context-mnt-ns.c
@@ -98,7 +98,7 @@ int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx)
 	field->record = mnt_ns_record;
 	field->get_value = mnt_ns_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_mnt_ns_to_ctx);
diff --git a/lttng-context-need-reschedule.c b/lttng-context-need-reschedule.c
index f29fb28..94efaa5 100644
--- a/lttng-context-need-reschedule.c
+++ b/lttng-context-need-reschedule.c
@@ -68,7 +68,7 @@ int lttng_add_need_reschedule_to_ctx(struct lttng_ctx **ctx)
 	field->record = need_reschedule_record;
 	field->get_value = need_reschedule_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_need_reschedule_to_ctx);
diff --git a/lttng-context-net-ns.c b/lttng-context-net-ns.c
index 6694037..37de09f 100644
--- a/lttng-context-net-ns.c
+++ b/lttng-context-net-ns.c
@@ -97,7 +97,7 @@ int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx)
 	field->record = net_ns_record;
 	field->get_value = net_ns_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_net_ns_to_ctx);
diff --git a/lttng-context-nice.c b/lttng-context-nice.c
index 563e805..acaba85 100644
--- a/lttng-context-nice.c
+++ b/lttng-context-nice.c
@@ -68,7 +68,7 @@ int lttng_add_nice_to_ctx(struct lttng_ctx **ctx)
 	field->record = nice_record;
 	field->get_value = nice_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_nice_to_ctx);
diff --git a/lttng-context-perf-counters.c b/lttng-context-perf-counters.c
index 43c4077..6b04d12 100644
--- a/lttng-context-perf-counters.c
+++ b/lttng-context-perf-counters.c
@@ -321,7 +321,7 @@ int lttng_add_perf_counter_to_ctx(uint32_t type,
 	field->u.perf_counter = perf_field;
 	lttng_context_update(*ctx);
 
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
diff --git a/lttng-context-pid-ns.c b/lttng-context-pid-ns.c
index f039f26..ccf629d 100644
--- a/lttng-context-pid-ns.c
+++ b/lttng-context-pid-ns.c
@@ -98,7 +98,7 @@ int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx)
 	field->record = pid_ns_record;
 	field->get_value = pid_ns_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_pid_ns_to_ctx);
diff --git a/lttng-context-pid.c b/lttng-context-pid.c
index b3caabb..326eabe 100644
--- a/lttng-context-pid.c
+++ b/lttng-context-pid.c
@@ -68,7 +68,7 @@ int lttng_add_pid_to_ctx(struct lttng_ctx **ctx)
 	field->record = pid_record;
 	field->get_value = pid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_pid_to_ctx);
diff --git a/lttng-context-ppid.c b/lttng-context-ppid.c
index ef84ad1..ff25288 100644
--- a/lttng-context-ppid.c
+++ b/lttng-context-ppid.c
@@ -90,7 +90,7 @@ int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx)
 	field->record = ppid_record;
 	field->get_value = ppid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_ppid_to_ctx);
diff --git a/lttng-context-preemptible.c b/lttng-context-preemptible.c
index 328f2a4..867805b 100644
--- a/lttng-context-preemptible.c
+++ b/lttng-context-preemptible.c
@@ -86,7 +86,7 @@ int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx)
 	field->record = preemptible_record;
 	field->get_value = preemptible_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_preemptible_to_ctx);
diff --git a/lttng-context-prio.c b/lttng-context-prio.c
index b5d21e7..367f7bd 100644
--- a/lttng-context-prio.c
+++ b/lttng-context-prio.c
@@ -89,7 +89,7 @@ int lttng_add_prio_to_ctx(struct lttng_ctx **ctx)
 	field->record = prio_record;
 	field->get_value = prio_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_prio_to_ctx);
diff --git a/lttng-context-procname.c b/lttng-context-procname.c
index 54007d1..8f18ca2 100644
--- a/lttng-context-procname.c
+++ b/lttng-context-procname.c
@@ -72,7 +72,7 @@ int lttng_add_procname_to_ctx(struct lttng_ctx **ctx)
 	field->record = procname_record;
 	field->get_value = procname_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_procname_to_ctx);
diff --git a/lttng-context-sgid.c b/lttng-context-sgid.c
index 61c8d53..2a58cbd 100644
--- a/lttng-context-sgid.c
+++ b/lttng-context-sgid.c
@@ -70,7 +70,7 @@ int lttng_add_sgid_to_ctx(struct lttng_ctx **ctx)
 	field->record = sgid_record;
 	field->get_value = sgid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_sgid_to_ctx);
diff --git a/lttng-context-suid.c b/lttng-context-suid.c
index 66d3ef5..ab3e2a9 100644
--- a/lttng-context-suid.c
+++ b/lttng-context-suid.c
@@ -70,7 +70,7 @@ int lttng_add_suid_to_ctx(struct lttng_ctx **ctx)
 	field->record = suid_record;
 	field->get_value = suid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_suid_to_ctx);
diff --git a/lttng-context-tid.c b/lttng-context-tid.c
index d2a20e6..f6defc4 100644
--- a/lttng-context-tid.c
+++ b/lttng-context-tid.c
@@ -71,7 +71,7 @@ int lttng_add_tid_to_ctx(struct lttng_ctx **ctx)
 	field->record = tid_record;
 	field->get_value = tid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_tid_to_ctx);
diff --git a/lttng-context-uid.c b/lttng-context-uid.c
index 5f11de2..5593852 100644
--- a/lttng-context-uid.c
+++ b/lttng-context-uid.c
@@ -70,7 +70,7 @@ int lttng_add_uid_to_ctx(struct lttng_ctx **ctx)
 	field->record = uid_record;
 	field->get_value = uid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_uid_to_ctx);
diff --git a/lttng-context-user-ns.c b/lttng-context-user-ns.c
index 746e4d9..0ed62e3 100644
--- a/lttng-context-user-ns.c
+++ b/lttng-context-user-ns.c
@@ -82,7 +82,7 @@ int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx)
 	field->record = user_ns_record;
 	field->get_value = user_ns_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_user_ns_to_ctx);
diff --git a/lttng-context-uts-ns.c b/lttng-context-uts-ns.c
index 7352a3d..283bc73 100644
--- a/lttng-context-uts-ns.c
+++ b/lttng-context-uts-ns.c
@@ -96,7 +96,7 @@ int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx)
 	field->record = uts_ns_record;
 	field->get_value = uts_ns_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_uts_ns_to_ctx);
diff --git a/lttng-context-vegid.c b/lttng-context-vegid.c
index 604da2a..1431dac 100644
--- a/lttng-context-vegid.c
+++ b/lttng-context-vegid.c
@@ -70,7 +70,7 @@ int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx)
 	field->record = vegid_record;
 	field->get_value = vegid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_vegid_to_ctx);
diff --git a/lttng-context-veuid.c b/lttng-context-veuid.c
index 983ae6a..a1b5b70 100644
--- a/lttng-context-veuid.c
+++ b/lttng-context-veuid.c
@@ -70,7 +70,7 @@ int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx)
 	field->record = veuid_record;
 	field->get_value = veuid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_veuid_to_ctx);
diff --git a/lttng-context-vgid.c b/lttng-context-vgid.c
index e08c77d..0eed24e 100644
--- a/lttng-context-vgid.c
+++ b/lttng-context-vgid.c
@@ -70,7 +70,7 @@ int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx)
 	field->record = vgid_record;
 	field->get_value = vgid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_vgid_to_ctx);
diff --git a/lttng-context-vpid.c b/lttng-context-vpid.c
index 982ce55..b5b6ce0 100644
--- a/lttng-context-vpid.c
+++ b/lttng-context-vpid.c
@@ -83,7 +83,7 @@ int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx)
 	field->record = vpid_record;
 	field->get_value = vpid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_vpid_to_ctx);
diff --git a/lttng-context-vppid.c b/lttng-context-vppid.c
index 66d6382..347ac63 100644
--- a/lttng-context-vppid.c
+++ b/lttng-context-vppid.c
@@ -112,7 +112,7 @@ int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx)
 	field->record = vppid_record;
 	field->get_value = vppid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_vppid_to_ctx);
diff --git a/lttng-context-vsgid.c b/lttng-context-vsgid.c
index aca5eda..3daf889 100644
--- a/lttng-context-vsgid.c
+++ b/lttng-context-vsgid.c
@@ -70,7 +70,7 @@ int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx)
 	field->record = vsgid_record;
 	field->get_value = vsgid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_vsgid_to_ctx);
diff --git a/lttng-context-vsuid.c b/lttng-context-vsuid.c
index 66c1300..d7fb0db 100644
--- a/lttng-context-vsuid.c
+++ b/lttng-context-vsuid.c
@@ -70,7 +70,7 @@ int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx)
 	field->record = vsuid_record;
 	field->get_value = vsuid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_vsuid_to_ctx);
diff --git a/lttng-context-vtid.c b/lttng-context-vtid.c
index 8fd68a8..e81ba0e 100644
--- a/lttng-context-vtid.c
+++ b/lttng-context-vtid.c
@@ -83,7 +83,7 @@ int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx)
 	field->record = vtid_record;
 	field->get_value = vtid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_vtid_to_ctx);
diff --git a/lttng-context-vuid.c b/lttng-context-vuid.c
index 6ae575f..33e22d3 100644
--- a/lttng-context-vuid.c
+++ b/lttng-context-vuid.c
@@ -70,7 +70,7 @@ int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx)
 	field->record = vuid_record;
 	field->get_value = vuid_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_vuid_to_ctx);
diff --git a/lttng-context.c b/lttng-context.c
index eb4534c..a6d4ee6 100644
--- a/lttng-context.c
+++ b/lttng-context.c
@@ -11,7 +11,7 @@
 #include <linux/list.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
-#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_all() */
+#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_mappings() */
 #include <lttng-events.h>
 #include <lttng-tracer.h>
 
diff --git a/lttng-events.c b/lttng-events.c
index a1c8445..401f646 100644
--- a/lttng-events.c
+++ b/lttng-events.c
@@ -30,7 +30,7 @@
 #include <linux/uuid.h>
 #include <linux/dmi.h>
 
-#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_all() */
+#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_mappings() */
 #include <wrapper/random.h>
 #include <wrapper/tracepoint.h>
 #include <wrapper/list.h>
@@ -2753,9 +2753,9 @@ end:
  * Registers a transport which can be used as output to extract the data out of
  * LTTng. The module calling this registration function must ensure that no
  * trap-inducing code will be executed by the transport functions. E.g.
- * vmalloc_sync_all() must be called between a vmalloc and the moment the memory
+ * vmalloc_sync_mappings() must be called between a vmalloc and the moment the memory
  * is made visible to the transport function. This registration acts as a
- * vmalloc_sync_all. Therefore, only if the module allocates virtual memory
+ * vmalloc_sync_mappings. Therefore, only if the module allocates virtual memory
  * after its registration must it synchronize the TLBs.
  */
 void lttng_transport_register(struct lttng_transport *transport)
@@ -2763,9 +2763,9 @@ void lttng_transport_register(struct lttng_transport *transport)
 	/*
 	 * Make sure no page fault can be triggered by the module about to be
 	 * registered. We deal with this here so we don't have to call
-	 * vmalloc_sync_all() in each module's init.
+	 * vmalloc_sync_mappings() in each module's init.
 	 */
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 
 	mutex_lock(&sessions_mutex);
 	list_add_tail(&transport->node, &lttng_transport_list);
diff --git a/lttng-ring-buffer-client.h b/lttng-ring-buffer-client.h
index d5c512c..ff62830 100644
--- a/lttng-ring-buffer-client.h
+++ b/lttng-ring-buffer-client.h
@@ -10,7 +10,7 @@
 #include <linux/module.h>
 #include <linux/types.h>
 #include <lib/bitfield.h>
-#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_all() */
+#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_mappings() */
 #include <wrapper/trace-clock.h>
 #include <lttng-events.h>
 #include <lttng-tracer.h>
@@ -766,7 +766,7 @@ static int __init lttng_ring_buffer_client_init(void)
 	 * This vmalloc sync all also takes care of the lib ring buffer
 	 * vmalloc'd module pages when it is built as a module into LTTng.
 	 */
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	lttng_transport_register(&lttng_relay_transport);
 	return 0;
 }
diff --git a/lttng-ring-buffer-metadata-client.h b/lttng-ring-buffer-metadata-client.h
index 17ffd75..a098b8d 100644
--- a/lttng-ring-buffer-metadata-client.h
+++ b/lttng-ring-buffer-metadata-client.h
@@ -9,7 +9,7 @@
 
 #include <linux/module.h>
 #include <linux/types.h>
-#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_all() */
+#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_mappings() */
 #include <lttng-events.h>
 #include <lttng-tracer.h>
 
@@ -428,7 +428,7 @@ static int __init lttng_ring_buffer_client_init(void)
 	 * This vmalloc sync all also takes care of the lib ring buffer
 	 * vmalloc'd module pages when it is built as a module into LTTng.
 	 */
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	lttng_transport_register(&lttng_relay_transport);
 	return 0;
 }
diff --git a/lttng-syscalls.c b/lttng-syscalls.c
index fb14f6b..97f1ba9 100644
--- a/lttng-syscalls.c
+++ b/lttng-syscalls.c
@@ -760,7 +760,7 @@ int lttng_syscalls_register(struct lttng_channel *chan, void *filter)
 	struct lttng_kernel_event ev;
 	int ret;
 
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 
 	if (!chan->sc_table) {
 		/* create syscall table mapping syscall to events */
diff --git a/probes/lttng-kprobes.c b/probes/lttng-kprobes.c
index c0a15e4..a44eaa1 100644
--- a/probes/lttng-kprobes.c
+++ b/probes/lttng-kprobes.c
@@ -132,7 +132,7 @@ int lttng_kprobes_register(const char *name,
 	 * Well.. kprobes itself puts the page fault handler on the blacklist,
 	 * but we can never be too careful.
 	 */
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 
 	ret = register_kprobe(&event->u.kprobe.kp);
 	if (ret)
diff --git a/probes/lttng-kretprobes.c b/probes/lttng-kretprobes.c
index 4b18d46..ab98ff2 100644
--- a/probes/lttng-kretprobes.c
+++ b/probes/lttng-kretprobes.c
@@ -221,7 +221,7 @@ int lttng_kretprobes_register(const char *name,
 	 * Well.. kprobes itself puts the page fault handler on the blacklist,
 	 * but we can never be too careful.
 	 */
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 
 	ret = register_kretprobe(&lttng_krp->krp);
 	if (ret)
diff --git a/probes/lttng-tracepoint-event-impl.h b/probes/lttng-tracepoint-event-impl.h
index 321cdfa..77b8638 100644
--- a/probes/lttng-tracepoint-event-impl.h
+++ b/probes/lttng-tracepoint-event-impl.h
@@ -15,7 +15,7 @@
 #include <probes/lttng.h>
 #include <probes/lttng-types.h>
 #include <probes/lttng-probe-user.h>
-#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_all() */
+#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_mappings() */
 #include <wrapper/ringbuffer/frontend_types.h>
 #include <wrapper/ringbuffer/backend.h>
 #include <wrapper/rcu.h>
@@ -1391,7 +1391,7 @@ static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = {
 #ifndef TP_MODULE_NOINIT
 static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void)
 {
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM));
 }
 
diff --git a/probes/lttng-uprobes.c b/probes/lttng-uprobes.c
index 64d8237..bc10128 100644
--- a/probes/lttng-uprobes.c
+++ b/probes/lttng-uprobes.c
@@ -161,7 +161,7 @@ int lttng_uprobes_add_callsite(struct lttng_event *event,
 	}
 
 	/* Ensure the memory we just allocated don't trigger page faults. */
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 
 	uprobe_handler->event = event;
 	uprobe_handler->up_consumer.handler = lttng_uprobes_handler_pre;
diff --git a/probes/lttng.c b/probes/lttng.c
index 383202c..05bc138 100644
--- a/probes/lttng.c
+++ b/probes/lttng.c
@@ -116,7 +116,7 @@ int __init lttng_logger_init(void)
 {
 	int ret = 0;
 
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 
 	/* /dev/lttng-logger */
 	ret = misc_register(&logger_dev);
diff --git a/tests/probes/lttng-test.c b/tests/probes/lttng-test.c
index e347639..b450e7d 100644
--- a/tests/probes/lttng-test.c
+++ b/tests/probes/lttng-test.c
@@ -97,7 +97,7 @@ int __init lttng_test_init(void)
 	int ret = 0;
 
 	(void) wrapper_lttng_fixup_sig(THIS_MODULE);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	lttng_test_filter_event_dentry =
 			proc_create_data(LTTNG_TEST_FILTER_EVENT_FILE,
 				S_IRUGO | S_IWUGO, NULL,
diff --git a/wrapper/vmalloc.h b/wrapper/vmalloc.h
index 0c3eb86..54715b5 100644
--- a/wrapper/vmalloc.h
+++ b/wrapper/vmalloc.h
@@ -21,8 +21,35 @@
 #include <linux/kallsyms.h>
 #include <wrapper/kallsyms.h>
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0))
+
+static inline
+void wrapper_vmalloc_sync_mappings(void)
+{
+	void (*vmalloc_sync_mappings_sym)(void);
+
+	vmalloc_sync_mappings_sym = (void *) kallsyms_lookup_funcptr("vmalloc_sync_mappings");
+	if (vmalloc_sync_mappings_sym) {
+		vmalloc_sync_mappings_sym();
+	} else {
+#ifdef CONFIG_X86
+		/*
+		 * Only x86 needs vmalloc_sync_mappings to make sure LTTng does not
+		 * trigger recursive page faults.
+		 */
+		printk_once(KERN_WARNING "LTTng: vmalloc_sync_mappings symbol lookup failed.\n");
+		printk_once(KERN_WARNING "Page fault handler and NMI tracing might trigger faults.\n");
+#endif
+	}
+}
+
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0)) */
+
+/*
+ * Map vmalloc_sync_mappings to vmalloc_sync_all() on kernels before 5.7.
+ */
 static inline
-void wrapper_vmalloc_sync_all(void)
+void wrapper_vmalloc_sync_mappings(void)
 {
 	void (*vmalloc_sync_all_sym)(void);
 
@@ -40,13 +67,29 @@ void wrapper_vmalloc_sync_all(void)
 #endif
 	}
 }
+
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0)) */
+
 #else
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0))
+
+static inline
+void wrapper_vmalloc_sync_mappings(void)
+{
+	return vmalloc_sync_mappings();
+}
+
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0)) */
+
 static inline
-void wrapper_vmalloc_sync_all(void)
+void wrapper_vmalloc_sync_mappings(void)
 {
 	return vmalloc_sync_all();
 }
+
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0)) */
+
 #endif
 
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0))
@@ -61,7 +104,7 @@ void *lttng_kvmalloc_node(unsigned long size, gfp_t flags, int node)
 		 * Make sure we don't trigger recursive page faults in the
 		 * tracing fast path.
 		 */
-		wrapper_vmalloc_sync_all();
+		wrapper_vmalloc_sync_mappings();
 	}
 	return ret;
 }
-- 
2.17.1