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| author | Sebastian Ott <sebott@linux.ibm.com> | 2018-10-18 12:11:08 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-09 19:14:48 +0300 |
| commit | e1f2a8b377b0578c7dff162c084059f915900aa8 (patch) | |
| tree | c688fc47739414462928bbe9931a4dce508a1579 /arch | |
| parent | df088bbe01e1234b14d8366416d98fde99bbd81e (diff) | |
| download | linux-e1f2a8b377b0578c7dff162c084059f915900aa8.tar.xz | |
s390/pci: fix sleeping in atomic during hotplug
commit 98dfd32620e970eb576ebce5ea39d905cb005e72 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -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 93cd0f1ca12b..d8dfd645bf02 100644 --- a/arch/s390/pci/pci_clp.c +++ b/arch/s390/pci/pci_clp.c @@ -437,7 +437,7 @@ 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; |