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RDMA/rtrs-srv: Do not unconditionally enable irq 

[ Upstream commit 3ee7ecd712048ade6482bea4b2f3dcaf039c0348 ]

When IO is completed, rtrs can be called in softirq context,
unconditionally enabling irq could cause panic.

To be on safe side, use spin_lock_irqsave and spin_unlock_irqrestore
instread.

Fixes: 9cb8374804 ("RDMA/rtrs: server: main functionality")
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Florian-Ewald Mueller <florian-ewald.mueller@ionos.com>
Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Signed-off-by: Grzegorz Prajsner <grzegorz.prajsner@ionos.com>
Link: https://lore.kernel.org/r/20231120154146.920486-2-haris.iqbal@ionos.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jack Wang 2023-11-20 16:41:38 +01:00 committed by Greg Kroah-Hartman
parent 4a8774a633
commit 1e46485045
1 changed files with 3 additions and 2 deletions
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5
drivers/infiniband/ulp/rtrs/rtrs-srv.c
View File

@ -63,8 +63,9 @@ static bool rtrs_srv_change_state(struct rtrs_srv_path *srv_path,
{
enum rtrs_srv_state old_state;
bool changed = false;
unsigned long flags;
spin_lock_irq(&srv_path->state_lock);
spin_lock_irqsave(&srv_path->state_lock, flags);
old_state = srv_path->state;
switch (new_state) {
case RTRS_SRV_CONNECTED:
@ -85,7 +86,7 @@ static bool rtrs_srv_change_state(struct rtrs_srv_path *srv_path,
}
if (changed)
srv_path->state = new_state;
spin_unlock_irq(&srv_path->state_lock);
spin_unlock_irqrestore(&srv_path->state_lock, flags);
return changed;
}