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| author | Sergei Trofimovich <slyfox@gentoo.org> | 2021-03-25 07:37:38 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-10 14:01:57 +0300 |
| commit | 0fad0c7f7ef7d62331fd5d0f8f0147a261aa82b7 (patch) | |
| tree | 6cfa3fc83c4ad0383167608ec0eeb9f9d3dd5ed2 | |
| parent | db4394a3dc55199afa724d653555c5bd1e746dd8 (diff) | |
| download | linux-0fad0c7f7ef7d62331fd5d0f8f0147a261aa82b7.tar.xz | |
ia64: mca: allocate early mca with GFP_ATOMIC
[ Upstream commit f2a419cf495f95cac49ea289318b833477e1a0e2 ]
The sleep warning happens at early boot right at secondary CPU
activation bootup:
smp: Bringing up secondary CPUs ...
BUG: sleeping function called from invalid context at mm/page_alloc.c:4942
in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 0, name: swapper/1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.12.0-rc2-00007-g79e228d0b611-dirty #99
..
Call Trace:
show_stack+0x90/0xc0
dump_stack+0x150/0x1c0
___might_sleep+0x1c0/0x2a0
__might_sleep+0xa0/0x160
__alloc_pages_nodemask+0x1a0/0x600
alloc_page_interleave+0x30/0x1c0
alloc_pages_current+0x2c0/0x340
__get_free_pages+0x30/0xa0
ia64_mca_cpu_init+0x2d0/0x3a0
cpu_init+0x8b0/0x1440
start_secondary+0x60/0x700
start_ap+0x750/0x780
Fixed BSP b0 value from CPU 1
As I understand interrupts are not enabled yet and system has a lot of
memory. There is little chance to sleep and switch to GFP_ATOMIC should
be a no-op.
Link: https://lkml.kernel.org/r/20210315085045.204414-1-slyfox@gentoo.org
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/ia64/kernel/mca.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c index 2889412e03eb..0d5b64ddcdd1 100644 --- a/arch/ia64/kernel/mca.c +++ b/arch/ia64/kernel/mca.c @@ -1858,7 +1858,7 @@ ia64_mca_cpu_init(void *cpu_data) data = mca_bootmem(); first_time = 0; } else - data = (void *)__get_free_pages(GFP_KERNEL, + data = (void *)__get_free_pages(GFP_ATOMIC, get_order(sz)); if (!data) panic("Could not allocate MCA memory for cpu %d\n", |