From mboxrd@z Thu Jan 1 00:00:00 1970 From: Valdis Kletnieks Subject: next-20160314 - crash in i2c_dev_init/bus_register_notifier at boot Date: Thu, 17 Mar 2016 10:59:51 -0400 Message-ID: <5769.1458226791@turing-police.cc.vt.edu> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1458226791_2528P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Return-path: Received: from outbound.smtp.vt.edu ([198.82.183.121]:33208 "EHLO omr2.cc.vt.edu" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932879AbcCQPAB (ORCPT ); Thu, 17 Mar 2016 11:00:01 -0400 Sender: linux-i2c-owner@vger.kernel.org List-Id: linux-i2c@vger.kernel.org To: Wolfram Sang Cc: linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org --==_Exmh_1458226791_2528P Content-Type: text/plain; charset=us-ascii Seeing this consistent crash on next-20160314. Sorry for shortened traceback, hand-transcribed as the crash doesn't get logged to /sys/fs/pstore as expected. next-20160307 works just fine. BUG: unable to handle kernel NULL pointer dereference at 000000000260 IP: blocking_notifier_chain_register+0x37/0xd0 ... Call Trace: bus_register_notifier+0x1c/0x20 i2c_dev_init+0x9c/0xf2 do_one_initcall_+0x99/0x210 ? set_debug_rodata+0x12/0x12 kernel_init_freeable+0x1b3/0x240 kernel_init+0x3/0x100 'git blame' doesn't seem to find anything relevant and recent in kernel/notifier.c or drivers/i2c/i2c-dev.c. Does this ring any bells, or is it time to bisect? --==_Exmh_1458226791_2528P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Exmh version 2.5 07/13/2001 iQIVAwUBVurGZwdmEQWDXROgAQKJDg/8D++dVdosjqpej2Gx6ePkKJEtrQGzwDQ1 wOmIOCkASffDqIqy+XKsQjy+L9JgTIKzxKP+C4A50NdNpq6aE2NJMbzkGm80ltZR Xh6DORHFI8BtY60lLkwysXFCTSJJO9BGO/J+iTZkffcGlG4tqzIY+4i63sAhU2v9 VlI2yEbiV0pMdqj0/1ecc5i7mK3yLn478WEHe57zpD1N4fbQltnbCZYEd/b9Gyzo FQRykcFUpXS0gFh1uWffrEM95jpf2sY97aHBFvmMBbs+qA/dRWGf7q95Emib3vKp yo8ySXVWj4d8hWCZ9s4q4dAaZUggEOoUnnAb9Ji9GxuvE145IKUBXLRkpen6K+G/ RDOuboNA9KmbL4DNaQeUeWFjI5kL6mf12bXpLZoKmqUj+w3DdTXJMwQ/R/yGURxI D+OwK4+WxbAfhEhRSV3IAa5lhc1IqEHwLxYl8ost7pfny981M2cvZXWC1jflk1Bi RLNgMl7IVKY/Da3qQrHlOdpCNPbiDTZ8nD+zeGIHiUbUqJkz/dTXRM3gDA2dUkH6 pZ6iI+B8UGcne1gtT6v120U48hIPGge7+uUbRbzIm7C0KjQVPnJyb5a643uSqtlP H++BM27v+4xElkpwOlHytCIdT2eXAgwF+fSkzqzE9N0BzRGeUmeLoLBIkq6hVHAT KUDTfQ4rKVI= =W9HE -----END PGP SIGNATURE----- --==_Exmh_1458226791_2528P--