Jared Kangas 74b6d260cb kasan: make report_lock a raw spinlock ... [ Upstream commit e30a0361b8515d424c73c67de1a43e45a13b8ba2 ] If PREEMPT_RT is enabled, report_lock is a sleeping spinlock and must not be locked when IRQs are disabled. However, KASAN reports may be triggered in such contexts. For example: char *s = kzalloc(1, GFP_KERNEL); kfree(s); local_irq_disable(); char c = *s; /* KASAN report here leads to spin_lock() */ local_irq_enable(); Make report_spinlock a raw spinlock to prevent rescheduling when PREEMPT_RT is enabled. Link: https://lkml.kernel.org/r/20241119210234.1602529-1-jkangas@redhat.com Fixes: 342a93247e ("locking/spinlock: Provide RT variant header: <linux/spinlock_rt.h>") Signed-off-by: Jared Kangas <jkangas@redhat.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-12-14 19:54:50 +01:00
..
common.c
generic.c
hw_tags.c
init.c
kasan_test_module.c
kasan_test.c
kasan.h
Makefile
quarantine.c
report_generic.c
report_hw_tags.c
report_sw_tags.c
report_tags.c
report.c	kasan: make report_lock a raw spinlock	2024-12-14 19:54:50 +01:00
shadow.c
sw_tags.c
tags.c