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Fri, 16 Jul 2021 10:02:00 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id EEAAE1E087D; Fri, 16 Jul 2021 12:01:59 +0200 (CEST) Date: Fri, 16 Jul 2021 12:01:59 +0200 From: Jan Kara To: Will Deacon Cc: CKI Project , skt-results-master@redhat.com, catalin.marinas@arm.com, linux-arm-kernel@lists.infradead.org, Fendy Tjahjadi , Memory Management , Jan Stancek , guro@fb.com, willy@infradead.org, tj@kernel.org, dennis@kernel.org, jack@suse.cz, linux-mm@kvack.org Subject: Re: =?utf-8?B?4p2MIEZBSUw=?= =?utf-8?Q?=3A?= Test report for kernel 5.14.0-rc1 (arm-next, e6f85cbe) Message-ID: <20210716100159.GE31920@quack2.suse.cz> References: <20210716090324.GA2543@willie-the-truck> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20210716090324.GA2543@willie-the-truck> User-Agent: Mutt/1.10.1 (2018-07-13) Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=lYDOLNS3; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b="dgj2TUO/"; spf=pass (imf11.hostedemail.com: domain of jack@suse.cz designates 195.135.220.29 as permitted sender) smtp.mailfrom=jack@suse.cz; dmarc=none X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: A5726F000233 X-Stat-Signature: t34puyp65fg4wbqc6kdfj8uk5dnk6ac8 X-HE-Tag: 1626429721-77884 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri 16-07-21 10:03:25, Will Deacon wrote: > On Thu, Jul 15, 2021 at 11:55:34PM -0000, CKI Project wrote: > > All kernel binaries, config files, and logs are available for downloa= d here: > >=20 > > https://arr-cki-prod-datawarehouse-public.s3.amazonaws.com/index.ht= ml?prefix=3Ddatawarehouse-public/2021/07/15/337870374 > >=20 > > One or more kernel tests failed: > >=20 > > aarch64: > > =F0=9F=92=A5 Podman system integration test - as user >=20 > This is a NULL pointer dereference in the recently introduced > cleanup_offline_cgwbs_workfn() function [c22d70a162d3 ("writeback, cgro= up: > release dying cgwbs by switching attached inodes")]. Adding some of tho= se > folks to CC. Thanks for report! This bug was already reported here [1] and Roman alrea= dy has a tenative fix. Stay tuned :) [1] https://lore.kernel.org/linux-fsdevel/YO5kCzI133B/fHiS@carbon.dhcp.th= efacebook.com Honza > addr2line gives: >=20 > | linux/./include/linux/atomic-arch-fallback.h:2265 > | linux/./include/linux/atomic-arch-fallback.h:2290 > | linux/./include/asm-generic/atomic-instrumented.h:1149 > | linux/./include/asm-generic/atomic-long.h:491 > | linux/percpu-refcount.h:247 > | linux/percpu-refcount.h:266 > | linux/backing-dev-defs.h:227 > | linux/mm/backing-dev.c:679 >=20 > and the crash (this is an arm64 machine) is: >=20 > [ 4794.406516] Unable to handle kernel NULL pointer dereference at virt= ual address 0000000000000000=20 > [ 4794.415307] Mem abort info:=20 > [ 4794.418088] ESR =3D 0x96000004=20 > [ 4794.421130] EC =3D 0x25: DABT (current EL), IL =3D 32 bits=20 > [ 4794.426428] SET =3D 0, FnV =3D 0=20 > [ 4794.429470] EA =3D 0, S1PTW =3D 0=20 > [ 4794.432597] FSC =3D 0x04: level 0 translation fault=20 > [ 4794.437461] Data abort info:=20 > [ 4794.440329] ISV =3D 0, ISS =3D 0x00000004=20 > [ 4794.444151] CM =3D 0, WnR =3D 0=20 > [ 4794.447105] user pgtable: 4k pages, 48-bit VAs, pgdp=3D00000009072be= 000=20 > [ 4794.453534] [0000000000000000] pgd=3D0000000000000000, p4d=3D0000000= 000000000=20 > [ 4794.460312] Internal error: Oops: 96000004 [#1] SMP=20 > [ 4794.465179] Modules linked in: xt_nat xt_addrtype xt_mark nft_chain_= nat xt_MASQUERADE nf_nat xt_comment veth bridge stp llc loop tun af_key c= rypto_user scsi_transport_iscsi xt_multiport ip_gre ip_tunnel gre overlay= xt_CONNSECMARK xt_SECMARK nft_counter xt_state xt_conntrack nft_compat a= h6 ah4 nft_objref nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_ta= bles nfnetlink jfs sctp ip6_udp_tunnel udp_tunnel dm_log_writes dm_flakey= rfkill mlx5_ib ib_uverbs ib_core sunrpc coresight_etm4x i2c_smbus coresi= ght_replicator coresight_tpiu coresight_tmc joydev mlx5_core acpi_ipmi ml= xfw ipmi_ssif psample ipmi_devintf ipmi_msghandler coresight_funnel cores= ight thunderx2_pmu vfat fat fuse zram ip_tables xfs crct10dif_ce ast ghas= h_ce i2c_algo_bit drm_vram_helper drm_kms_helper syscopyarea sysfillrect = sysimgblt fb_sys_fops cec drm_ttm_helper ttm drm gpio_xlp i2c_xlp9xx uas = usb_storage aes_neon_bs [last unloaded: raid10]=20 > [ 4794.545404] CPU: 86 PID: 1121023 Comm: kworker/u513:9 Tainted: G = OE 5.14.0-rc1 #1=20 > [ 4794.554090] Hardware name: HPE Apollo 70 /C01_APACHE_MB = , BIOS L50_5.13_1.15 05/08/2020=20 > [ 4794.563817] Workqueue: events_unbound cleanup_offline_cgwbs_workfn=20 > [ 4794.569990] pstate: 004000c9 (nzcv daIF +PAN -UAO -TCO BTYPE=3D--)=20 > [ 4794.575985] pc : cleanup_offline_cgwbs_workfn+0x2d8/0x350=20 > [ 4794.581372] lr : cleanup_offline_cgwbs_workfn+0xc8/0x350=20 > [ 4794.586672] sp : ffff800043ae3d40=20 > [ 4794.589973] x29: ffff800043ae3d40 x28: 0000000000000000 x27: 0000000= 000000001=20 > [ 4794.597097] x26: 0000000000000000 x25: 00000000000000e0 x24: ffff800= 011f01438=20 > [ 4794.604221] x23: ffff800043ae3db0 x22: ffff800011f01428 x21: ffff800= 01228c5f0=20 > [ 4794.611345] x20: ffff000817299800 x19: ffff000817299a80 x18: 0000000= 00000000e=20 > [ 4794.618469] x17: 0000000079c37e0f x16: 0000000000010000 x15: fffffc0= 02084ac02=20 > [ 4794.625593] x14: 0000000000000000 x13: 0000000000000030 x12: 0000000= 000000040=20 > [ 4794.632716] x11: ffff000812333d98 x10: ffff000812333d9a x9 : ffff800= 0102dfd84=20 > [ 4794.639840] x8 : ffff000812331b88 x7 : 0000000000000000 x6 : ffff000= 812331d48=20 > [ 4794.646964] x5 : 0000000000000000 x4 : ffff00086f2a4a80 x3 : 0000000= 000000000=20 > [ 4794.654088] x2 : ffff800043ae3db0 x1 : ffff00086f2a4a80 x0 : 0000000= 000000003=20 > [ 4794.661212] Call trace:=20 > [ 4794.663646] cleanup_offline_cgwbs_workfn+0x2d8/0x350=20 > [ 4794.668685] process_one_work+0x1f0/0x4ac=20 > [ 4794.672686] worker_thread+0x180/0x400=20 > [ 4794.676423] kthread+0x110/0x114=20 > [ 4794.679641] ret_from_fork+0x10/0x18=20 > [ 4794.683209] Code: d63f0020 97f9c259 17ffffb1 f8588263 (f9400061) =20 > [ 4794.689290] ---[ end trace 8c5d2f7872fef978 ]---=20 >=20 > Will --=20 Jan Kara SUSE Labs, CR