objtool: Fix stack offset tracking for indirect CFAs
stable inclusion from stable-v4.19.238 commit 9fbfc77d0f5e04a7434fa6d32112036e2a41bc6e category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I53TS3 CVE: NA -------------------------------- commit d8dd25a4 upstream. When the current frame address (CFA) is stored on the stack (i.e., cfa->base == CFI_SP_INDIRECT), objtool neglects to adjust the stack offset when there are subsequent pushes or pops. This results in bad ORC data at the end of the ENTER_IRQ_STACK macro, when it puts the previous stack pointer on the stack and does a subsequent push. This fixes the following unwinder warning: WARNING: can't dereference registers at 00000000f0a6bdba for ip interrupt_entry+0x9f/0xa0 Fixes: 627fce14 ("objtool: Add ORC unwind table generation") Reported-by:Vince Weaver <vincent.weaver@maine.edu> Reported-by:
Dave Jones <dsj@fb.com> Reported-by:
Steven Rostedt <rostedt@goodmis.org> Reported-by:
Vegard Nossum <vegard.nossum@oracle.com> Reported-by:
Joe Mario <jmario@redhat.com> Reviewed-by:
Miroslav Benes <mbenes@suse.cz> Signed-off-by:
Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Jann Horn <jannh@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/853d5d691b29e250333332f09b8e27410b2d9924.1587808742.git.jpoimboe@redhat.com Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Zou Yipeng <zouyipeng@huawei.com> Reviewed-by:
Zhang Jianhua <chris.zjh@huawei.com> Signed-off-by:
Yongqiang Liu <liuyongqiang13@huawei.com>
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