Re: 💥 PANICKED: Test report for kernel 5.7.5-d1c48db.cki (stable-queue)

On Mon, Jun 22, 2020 at 10:59 PM CKI Project cki-project@redhat.com wrote:

Hello,

We ran automated tests on a recent commit from this kernel tree:

   Kernel repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
        Commit: d1c48dba15e7 - pinctrl: qcom: ipq6018 Add missing pins in qpic pin group

The results of these automated tests are provided below.

Overall result: FAILED (see details below)
         Merge: OK
       Compile: OK
         Tests: PANICKED

All kernel binaries, config files, and logs are available for download here:

https://cki-artifacts.s3.us-east-2.amazonaws.com/index.html?prefix=datawareh...

One or more kernel tests failed:

s390x:
  selinux-policy: serge-testsuite
 ❌ stress: stress-ng
  Podman system integration test - as root

ppc64le:
  selinux-policy: serge-testsuite
  Podman system integration test - as root

aarch64:
  Podman system integration test - as root
  selinux-policy: serge-testsuite

x86_64:
  Podman system integration test - as root
  selinux-policy: serge-testsuite

It seems the panics are caused by this commit: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/c...

Apparently, the "if (flags & ~(O_ACCMODE | O_LARGEFILE))" check is being hit during mount(2): https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/t...

[ 8149.093006] ------------[ cut here ]------------ [ 8149.097614] kernel BUG at fs/overlayfs/util.c:466! [ 8149.102386] Internal error: Oops - BUG: 0 [#1] SMP [ 8149.107155] Modules linked in: overlay xt_CONNSECMARK xt_SECMARK nft_counter xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables nfnetlink ah6 ah4 sctp dm_log_writes dm_flakey rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache rfkill sunrpc xgene_enet xgene_hwmon xgene_edac vfat fat at803x mdio_xgene xgene_rng mailbox_xgene_slimpro drm ip_tables xfs libcrc32c sdhci_of_arasan sdhci_pltfm gpio_dwapb i2c_xgene_slimpro crct10dif_ce sdhci cqhci gpio_xgene_sb xhci_plat_hcd gpio_keys aes_neon_bs [ 8149.154907] CPU: 5 PID: 498222 Comm: mount Kdump: loaded Not tainted 5.7.5-d1c48db.cki #1 [ 8149.163043] Hardware name: AmpereComputing(R) Mustang/Mustang, BIOS 0ACDY027 12/12/2018 [ 8149.171008] pstate: 80400005 (Nzcv daif +PAN -UAO) [ 8149.175786] pc : ovl_path_open+0xbc/0xc0 [overlay] [ 8149.180558] lr : ovl_check_d_type_supported+0x48/0x100 [overlay] [ 8149.186533] sp : ffff800013463ab0 [ 8149.189829] x29: ffff800013463ab0 x28: ffff000379622040 [ 8149.195114] x27: 0000000000000000 x26: 0000000000000000 [ 8149.200399] x25: ffff000376d80240 x24: ffff000376d80b40 [ 8149.205684] x23: ffff0003da083e20 x22: ffff800013463cd8 [ 8149.210969] x21: ffff00039cae0540 x20: ffff800013463cd8 [ 8149.216252] x19: 0000000000004000 x18: 0000000000000010 [ 8149.221536] x17: 0000000000000000 x16: 0000000000000000 [ 8149.226820] x15: 095a041701101c00 x14: 745f73656c69665f [ 8149.232104] x13: 7265746e756f6d5f x12: 79616c7265766f5f [ 8149.237387] x11: 747365743a725f74 x10: 00000000000fffff [ 8149.242672] x9 : ffff80000943df20 x8 : ffff0003e2f7f188 [ 8149.247956] x7 : 0000000000000000 x6 : ffff800011d65be8 [ 8149.253240] x5 : ffff0003d20cfbc8 x4 : 61c8864680b583eb [ 8149.258523] x3 : ffff800011d56180 x2 : ffff80000943c470 [ 8149.263808] x1 : ffff000376d80b40 x0 : 0000000000004000 [ 8149.269091] Call trace: [ 8149.271531] ovl_path_open+0xbc/0xc0 [overlay] [ 8149.275958] ovl_check_d_type_supported+0x48/0x100 [overlay] [ 8149.281593] ovl_make_workdir+0xd0/0x460 [overlay] [ 8149.286364] ovl_fill_super+0x298/0xb98 [overlay] [ 8149.291047] mount_nodev+0x58/0xb8 [ 8149.294435] ovl_mount+0x24/0x30 [overlay] [ 8149.298512] legacy_get_tree+0x38/0x68 [ 8149.302241] vfs_get_tree+0x30/0xf8 [ 8149.305712] do_mount+0x55c/0xa80 [ 8149.309010] __arm64_sys_mount+0x94/0x100 [ 8149.312998] el0_svc_common.constprop.0+0x7c/0x188 [ 8149.317763] do_el0_svc+0x2c/0x98 [ 8149.321061] el0_sync_handler+0x184/0x204 [ 8149.325049] el0_sync+0x17c/0x180 [ 8149.328349] Code: a8c37bfd d50323bf d65f03c0 d4210000 (d4210000) [ 8149.334413] ---[ end trace bc6ed2af25e97165 ]--- [ 8149.339375] ------------[ cut here ]------------

-- Ondrej Mosnacek Software Engineer, Platform Security - SELinux kernel Red Hat, Inc.