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Date: Mon, 7 Sep 2015 00:54:15 +0100 From: Russell King - ARM Linux <linux@....linux.org.uk> To: Robert Jarzmik <robert.jarzmik@...e.fr> Cc: Dave Martin <Dave.Martin@....com>, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org Subject: Re: [PATCH] ARM: fix alignement of __bug_table section entries On Sun, Sep 06, 2015 at 11:31:34PM +0200, Robert Jarzmik wrote: > Russell King - ARM Linux <linux@....linux.org.uk> writes: > > >> [1] Approach 1 : translation table sync > >> ======================================= > ... > > The important place is in arch/arm/include/asm/domain.h, which is where > > we manipulate the DACR within probe_kernel_address(). > > Gah, silly me. But even with [1], I still get an error [2]. I have a > confirmation that I have a "Page Permission" fault on the > probe_kernel_address(). Hmm, that's not right. If it's the DACR, then it should be a page domain fault, not a page permission fault. > [2] Oops > ======== > # insmod /tmp/unalign.ko > RJK1: fsr=23 far=e1c23643 dacr=51 > RJK2: fsr=23 far=e1c23643 dacr=51 > RJK3: fsr=2f far=bf00202c dacr=51 > RJK: fault=4 instr=0x00000000 instrptr=bf00202c Can you add a show_pte(current->mm, instrptr) to dump those page table entries please? -- FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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