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[222.155.6.212]) by smtp.gmail.com with ESMTPSA id 64sm14110478pfy.114.2021.08.22.21.04.52 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 22 Aug 2021 21:04:55 -0700 (PDT) Subject: Re: RFC: remove set_fs for m68k To: Christoph Hellwig References: <65a95ae0-4734-68ce-ef71-7491b5534718@gmail.com> <8f470389-fe8a-90b0-19a5-68f85526b30e@gmail.com> <20210721170529.GA14550@lst.de> <20210723051126.GA31274@lst.de> <8884e940-22e8-72a5-e9ec-f9b2628b6ef4@gmail.com> <251aa093-047a-b37c-4e88-d543c6fa8bc6@gmail.com> <20210815074236.GA23777@lst.de> <63c35a20-3eec-1825-fa18-5df28f5b6eaa@gmail.com> <20210816065851.GA26665@lst.de> <7517d306-21ad-daa1-a2fb-b273211cb588@gmail.com> Cc: Andreas Schwab , Geert Uytterhoeven , Greg Ungerer , linux-m68k@lists.linux-m68k.org, Linus Torvalds From: Michael Schmitz Message-ID: <2eb4981b-a3cf-b310-9ac0-2deadb209ca4@gmail.com> Date: Mon, 23 Aug 2021 16:04:11 +1200 User-Agent: Mozilla/5.0 (X11; Linux ppc64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <7517d306-21ad-daa1-a2fb-b273211cb588@gmail.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-m68k@vger.kernel.org On 23/08/21 07:33, Michael Schmitz wrote: > Got this overnight: > >> [536154.200000] *** FORMAT ERROR *** FORMAT=0 >> [536154.210000] Current process id is 4656 >> [536154.230000] BAD KERNEL TRAP: 00000000 >> [536154.240000] Modules linked in: atari_scsi ne 8390p [last >> unloaded: atari_scsi] >> [536154.260000] PC: [<00002a8c>] resume_userspace+0x14/0x16 >> [536154.270000] SR: 2208 SP: 977bd1be a2: 8009b5e8 >> [536154.290000] d0: 8009b5e8 d1: cfcfcfcf d2: 00000000 d3: >> ffffffff >> [536154.300000] d4: 00000000 d5: 00000000 a0: 8008a108 a1: >> 8009b7df >> [536154.320000] Process savelog (pid: 4656, task=e49aa246) >> [536154.330000] Frame format=0 >> [536154.340000] Stack from 00cc5fa4: >> [536154.340000] 02088004 3666b008 1c0eb209 007eb5e8 8006a2d0 >> efaec378 8004366c 61ff61ff >> [536154.340000] 8006a2d4 8006a2d2 00000000 030dfffb 0044fffa >> 0e000000 fffa1a00 fffa1c00 >> [536154.340000] fffa1e00 fffb0e40 fffb0e80 00049b66 00000040 >> 005f5800 00000001 >> [536154.460000] Call Trace: [<00049b66>] >> __handle_irq_event_percpu+0x38/0xce >> [536154.530000] >> [536154.540000] Code: 1029 0007 660c 4cdf 073e 201f 588f dfdf <4e73> >> 254f 0400 e308 660a 487a ffe0 60ff 002d 13c6 598f 48e7 031e 486f 001c >> 61ff >> [536154.630000] Disabling lock debugging due to kernel taint > FWIW - that's the 'rte' at the end of resume_userspace / ret_from_exception, which is on our interrupt return path. Stack smash?? Cheers, Michael