summaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
authorAndrey Ryabinin <aryabinin@virtuozzo.com>2016-12-12 16:44:17 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 18:55:08 -0800
commit8d5341a6260a59cf15c4ae0efbf0bcd8e1b8a6bb (patch)
tree3e2b001858455d3344ea4430548e28d9085dbaf4 /arch
parent0f110a9b956c1678b53986b003d59794604807ba (diff)
downloadlinux-8d5341a6260a59cf15c4ae0efbf0bcd8e1b8a6bb.tar.bz2
x86/ldt: use vfree_atomic() to free ldt entries
vfree() is going to use sleeping lock. free_ldt_struct() may be called with disabled preemption, therefore we must use vfree_atomic() here. E.g. call trace: vfree() free_ldt_struct() destroy_context_ldt() __mmdrop() finish_task_switch() schedule_tail() ret_from_fork() Link: http://lkml.kernel.org/r/1479474236-4139-7-git-send-email-hch@lst.de Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Joel Fernandes <joelaf@google.com> Cc: Jisheng Zhang <jszhang@marvell.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: John Dias <joaodias@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/ldt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index 6707039b9032..4d12cdf2b453 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -93,7 +93,7 @@ static void free_ldt_struct(struct ldt_struct *ldt)
paravirt_free_ldt(ldt->entries, ldt->size);
if (ldt->size * LDT_ENTRY_SIZE > PAGE_SIZE)
- vfree(ldt->entries);
+ vfree_atomic(ldt->entries);
else
free_page((unsigned long)ldt->entries);
kfree(ldt);