path: root/arch/ia64
diff options
authorSergei Trofimovich <>2021-03-24 21:37:38 -0700
committerLinus Torvalds <>2021-03-25 09:22:55 -0700
commitf2a419cf495f95cac49ea289318b833477e1a0e2 (patch)
treea112834370fe548cc2f93139f2c444841df7a6e1 /arch/ia64
parent8b44ca2b634527151af07447a8090a5f3a043321 (diff)
ia64: mca: allocate early mca with GFP_ATOMIC
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: Signed-off-by: Sergei Trofimovich <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'arch/ia64')
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index d4cae2fc69ca..adf6521525f4 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -1824,7 +1824,7 @@ 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,
if (!data)
panic("Could not allocate MCA memory for cpu %d\n",