diff options
| author |   Sebastian Ott <sebott@linux.ibm.com> | 2018-10-18 11:11:08 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-12-13 10:42:26 +0100 |
| commit | 98dfd32620e970eb576ebce5ea39d905cb005e72 (patch) | |
| tree | 2b4b41e5990056e27343d9fd1cdf80f96fbfa95a /arch/s390/pci/pci_clp.c | |
| parent | s390/pci: remove bit_lock usage in interrupt handler (diff) | |
| download | linux-dev-98dfd32620e970eb576ebce5ea39d905cb005e72.tar.xz linux-dev-98dfd32620e970eb576ebce5ea39d905cb005e72.zip | |
s390/pci: fix sleeping in atomic during hotplug
When triggered by pci hotplug (PEC 0x306) clp_get_state is called
with spinlocks held resulting in the following warning:
zpci: n/a: Event 0x306 reconfigured PCI function 0x0
BUG: sleeping function called from invalid context at mm/page_alloc.c:4324
in_atomic(): 1, irqs_disabled(): 0, pid: 98, name: kmcheck
2 locks held by kmcheck/98:
Change the allocation to use GFP_ATOMIC.
Cc: stable@vger.kernel.org # 4.13+
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/pci/pci_clp.c')
| -rw-r--r-- | arch/s390/pci/pci_clp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c index 19b2d2a9b43d..eeb7450db18c 100644 --- a/arch/s390/pci/pci_clp.c +++ b/arch/s390/pci/pci_clp.c @@ -436,7 +436,7 @@ int clp_get_state(u32 fid, enum zpci_state *state) struct clp_state_data sd = {fid, ZPCI_FN_STATE_RESERVED}; int rc; - rrb = clp_alloc_block(GFP_KERNEL); + rrb = clp_alloc_block(GFP_ATOMIC); if (!rrb) return -ENOMEM; |