git: 3e4fe9ca73be - stable/13 - MFC dfb33cb0ef48: Allocating the LinuxKPI current structure from a software interrupt thread must be done using the M_NOWAIT flag after 1ae20f7c70ea .

[Hans Petter Selasky]

The branch stable/13 has been updated by hselasky:

URL: https://cgit.FreeBSD.org/src/commit/?id=3e4fe9ca73be69ecec948b49f9d2ea5379b385b1

commit 3e4fe9ca73be69ecec948b49f9d2ea5379b385b1
Author:     Hans Petter Selasky <hselasky at FreeBSD.org>
AuthorDate: 2021-03-10 12:26:09 +0000
Commit:     Hans Petter Selasky <hselasky at FreeBSD.org>
CommitDate: 2021-03-23 10:54:01 +0000

    MFC dfb33cb0ef48:
    Allocating the LinuxKPI current structure from a software interrupt thread
    must be done using the M_NOWAIT flag after 1ae20f7c70ea .
    
    Sponsored by:   Mellanox Technologies // NVIDIA Networking
    
    (cherry picked from commit dfb33cb0ef48084da84072244e8ca486dfcf3a96)
---
 sys/compat/linuxkpi/common/src/linux_compat.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/sys/compat/linuxkpi/common/src/linux_compat.c b/sys/compat/linuxkpi/common/src/linux_compat.c
index 707c5e47512e..5f7e2664bee1 100644
--- a/sys/compat/linuxkpi/common/src/linux_compat.c
+++ b/sys/compat/linuxkpi/common/src/linux_compat.c
@@ -1913,9 +1913,15 @@ linux_timer_callback_wrapper(void *context)
 {
 	struct timer_list *timer;
 
-	linux_set_current(curthread);
-
 	timer = context;
+
+	if (linux_set_current_flags(curthread, M_NOWAIT)) {
+		/* try again later */
+		callout_reset(&timer->callout, 1,
+		    &linux_timer_callback_wrapper, timer);
+		return;
+	}
+
 	timer->function(timer->data);
 }