From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Hesse Subject: Re: unable to handle kernel NULL pointer dereference in get_free_stripe Date: Mon, 24 Aug 2015 17:26:49 +0200 Message-ID: <20150824172649.2cd87a30@leda.localdomain> References: <20150823230341.3dd46f66@leda.localdomain> <87pp2dnt9s.fsf@notabene.i-did-not-set--mail-host-address--so-tickle-me> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; boundary="Sig_/HXWjM+Eho76ux4q8w=gB1YP"; protocol="application/pgp-signature" Return-path: In-Reply-To: <87pp2dnt9s.fsf@notabene.i-did-not-set--mail-host-address--so-tickle-me> Sender: linux-raid-owner@vger.kernel.org To: Neil Brown Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_/HXWjM+Eho76ux4q8w=gB1YP Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Neil Brown on Mon, 2015/08/24 07:35: > Christian Hesse writes: >=20 > > Hello everybody, > > > > with linux 4.1.x I am hit by this issue with RAID5: > > > > BUG: unable to handle kernel NULL pointer dereference at (nul= l) > > IP: [] get_free_stripe+0x31/0xf0 [raid456] >=20 > Thank for the report. > Please add upstrem commit: >=20 > Commit: 49895bcc7e56 ("md/raid5: don't let shrink_slab shrink too far.") >=20 > fix it. My system is up for eight hours now, doing a lot of I/O without issue. Thanks a lot! --=20 Best regards, Chris --Sig_/HXWjM+Eho76ux4q8w=gB1YP Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJV2ze5AAoJEIlFIdfMgPR22LkIAJeRmHmt4f1T29/JgR3+go9u eVjTPXRHmqnXnxiqVZhiryd1xeJw6YZ4E+K7cACIwsV9euePNqFN28sdVHd3fKOP GyRL0Qxsr8+MRoLeGyvgrAEnxMFJ8G1YnTdp5aSo57mfRk/W+Dm3nXY5JV7rjCkI kk65GCWymHMcKzpwuNEuobeDSsX3TaQYIzc3n34nkFJttsJ6EWRNdHKauEOA1IQ/ iyuDAi43+3xw0fY59g35m2qBKYXolg2O+5qyYgU2Io7RyXn0kAfXrfjd3zzs794x Dd6oveimUJV1ErUkuZb4SMFz47n11w/l5g1/35beky4Hy7UxeOEcgzRv7GWAtcU= =ayKK -----END PGP SIGNATURE----- --Sig_/HXWjM+Eho76ux4q8w=gB1YP--