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| author |   Fuqian Huang <huangfq.daxian@gmail.com> | 2019-08-05 20:56:25 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-15 18:20:32 +0200 |
| commit | 672a749b4df68909e4a9dbb4ff7de3c795affd35 (patch) | |
| tree | 6bab02604716863f3c0a24fbc2849cab0d9148d3 /drivers/misc | |
| parent | sgi-xp: xpc_uv: Make structure xpc_arch_ops_uv constant (diff) | |
| download | linux-dev-672a749b4df68909e4a9dbb4ff7de3c795affd35.tar.xz linux-dev-672a749b4df68909e4a9dbb4ff7de3c795affd35.zip | |
sgi-xpc: Use GFP_ATOMIC for kmalloc in atomic context.
xpc_send_activate_IRQ_uv is called from
<-xpc_send_activate_IRQ_part_uv
<-xpc_indicate_partition_disengaged_uv
(xpc_arch_ops.indicate_partition_disengaged)
<-xpc_die_deactivate
<-xpc_system_die
xpc_system_die is registered by atomic_notifier_chain_register,
which indicates xpc_system_die may be called in atomic context.
So the kmalloc in xpc_send_activate_IRQ_uv may be in atomic context.
Use GFP_ATOMIC instead of GFP_KERNEL in kmalloc.
Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
Link: https://lore.kernel.org/r/20190805125625.24963-1-huangfq.daxian@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/sgi-xp/xpc_uv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/misc/sgi-xp/xpc_uv.c b/drivers/misc/sgi-xp/xpc_uv.c index 89c4b04337d3..7f34b97fd02e 100644 --- a/drivers/misc/sgi-xp/xpc_uv.c +++ b/drivers/misc/sgi-xp/xpc_uv.c @@ -694,7 +694,7 @@ again: if (gru_mq_desc == NULL) { gru_mq_desc = kmalloc(sizeof(struct gru_message_queue_desc), - GFP_KERNEL); + GFP_ATOMIC); if (gru_mq_desc == NULL) { ret = xpNoMemory; goto done; |