Messages in this thread Patch in this message | | | Date | Wed, 08 Jul 2020 21:28:05 +0200 | From | Thomas Gleixner <> | Subject | [patch 1/3] x86/traps: Disable interrupts in exc_aligment_check() |
| |
exc_alignment_check() fails to disable interrupts before returning to the entry code.
Fixes: ca4c6a9858c2 ("x86/traps: Make interrupt enable/disable symmetric in C code") Reported-by: syzbot+0889df9502bc0f112b31@syzkaller.appspotmail.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- arch/x86/kernel/traps.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -303,6 +303,8 @@ DEFINE_IDTENTRY_ERRORCODE(exc_alignment_ do_trap(X86_TRAP_AC, SIGBUS, "alignment check", regs, error_code, BUS_ADRALN, NULL); + + local_irq_disable(); } #ifdef CONFIG_VMAP_STACK
| |