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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1651944
Title:
Kernel panic when we call pipework to setup virtual network for docker
containers
Status in AppArmor:
New
Status in apparmor package in Ubuntu:
Confirmed
Status in linux package in Ubuntu:
Incomplete
Bug description:
I found a kernel panic issue when I was using pipework to config the
network of a docker container on an x86 board with all-snap image. The
issue is related to the auditing module of Linux kernel. So it should
be an issue of pc-kernel-snap.
I created a simple test snap to reproduce the issue and upload it to github.
https://github.com/pliu6/docker-snap-test
Software environment to reproduce the bug:
#snap list
Name Version Rev Developer Notes
core 16.04.1 714 canonical -
docker 1.11.2-9 56 canonical devmode
dockertest 0.0.1 x12 devmode
pc 16.04-0.8 9 canonical -
pc-kernel 4.4.0-53-2 51 canonical -
The log is below:
[ 504.783341] BUG: unable to handle kernel paging request at
fffffffffffffff3
[ 504.867186] IP: [<ffffffff813fe6c0>] strlen+0x0/0x20
[ 504.926879] PGD 1e0d067 PUD 1e0f067 PMD 0
[ 504.976588] Oops: 0000 [#1] SMP
[ 505.015690] Modules linked in: veth xt_addrtype br_netfilter ipt_REJECT
nf_reject_ipv4 ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_comment xt_conntrack
iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack
bridge stp llc overlay aufs arc4 ath9k ath9k_common ath9k_hw ath mac80211 c
fg80211 kvm_amd uas kvm irqbypass k10temp r8169 mii sp5100_tco mac_hid
i2c_piix4 shpchp iptable_filter ip_tables ip6table_filter ip6_tables x_tables
aut
ofs4 mmc_block sdhci_acpi sdhci_pci sdhci virtio_scsi nls_iso8859_1
usb_storage ahci libahci
[ 505.599099] CPU: 1 PID: 2414 Comm: snap-confine Not tainted
4.4.0-53-generic #74-Ubuntu
[ 505.694977] Hardware name: PC Engines APU, BIOS SageBios_PCEngines_APU-45
04/05/2014
[ 505.787738] task: ffff880037637080 ti: ffff880061a70000 task.ti:
ffff880061a70000
[ 505.877382] RIP: 0010:[<ffffffff813fe6c0>] [<ffffffff813fe6c0>]
strlen+0x0/0x20
[ 505.966192] RSP: 0018:ffff880061a73a20 EFLAGS: 00010246
[ 506.029835] RAX: ffff880061a73b20 RBX: fffffffffffffff3 RCX:
0000000000000000
[ 506.115320] RDX: 000000000000014e RSI: fffffffffffffff3 RDI:
fffffffffffffff3
[ 506.200802] RBP: ffff880061a73a38 R08: ffff88005c835138 R09:
ffff880061a73a94
[ 506.286283] R10: 000000000000000e R11: ffff88005c835131 R12:
ffff88007aff0480
[ 506.371767] R13: ffff880037637080 R14: ffffffff81399fc0 R15:
00000000fffffff3
[ 506.457251] FS: 00007fa9f36aa740(0000) GS:ffff88007df00000(0000)
knlGS:0000000000000000
[ 506.554170] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 506.623014] CR2: fffffffffffffff3 CR3: 000000007853e000 CR4:
00000000000006e0
[ 506.708497] Stack:
[ 506.732624] ffffffff81122a1a ffff88007aff0480 ffff880061a73b00
ffff880061a73a60
[ 506.822056] ffffffff8139a028 ffff88007aff0480 ffff880061a73b00
ffff880037637080
[ 506.911490] ffff880061a73ad8 ffffffff8136f088 ffffffff812285c0
ffff880061a73af0
[ 507.000926] Call Trace:
[ 507.030263] [<ffffffff81122a1a>] ? audit_log_untrustedstring+0x1a/0x30
[ 507.109502] [<ffffffff8139a028>] audit_cb+0x68/0x3f0
[ 507.170027] [<ffffffff8136f088>] common_lsm_audit+0x1b8/0x740
[ 507.239910] [<ffffffff812285c0>] ? alloc_inode+0x50/0x90
[ 507.304593] [<ffffffff812265b6>] ? prepend_path+0xc6/0x2a0
[ 507.371358] [<ffffffff8138161f>] aa_audit+0x5f/0x170
[ 507.431880] [<ffffffff81399fb2>] audit_mount+0x152/0x160
[ 507.496567] [<ffffffff8139a67d>] match_mnt_path_str+0x1dd/0x490
[ 507.568529] [<ffffffff812278b8>] ? dentry_path+0x18/0x70
[ 507.633213] [<ffffffff8139aa0a>] match_mnt+0xda/0x150
[ 507.694776] [<ffffffff8139b280>] aa_bind_mount+0x100/0x180
[ 507.761540] [<ffffffff813903e0>] wrap_apparmor_sb_mount+0x1c0/0x270
[ 507.837664] [<ffffffff81345db7>] security_sb_mount+0x57/0x80
[ 507.906506] [<ffffffff8123029b>] do_mount+0xab/0xde0
[ 507.967032] [<ffffffff811efd74>] ? __kmalloc_track_caller+0x1b4/0x250
[ 508.045236] [<ffffffff810ef581>] ? hrtimer_try_to_cancel+0xd1/0x130
[ 508.121361] [<ffffffff811acc72>] ? memdup_user+0x42/0x70
[ 508.186042] [<ffffffff812312ff>] SyS_mount+0x9f/0x100
[ 508.247607] [<ffffffff81836072>] entry_SYSCALL_64_fastpath+0x16/0x71
[ 508.324765] Code: 89 f8 48 89 e5 f6 82 a0 05 a5 81 20 74 10 48 83 c0 01 0f
b6 10 f6 82 a0 05 a5 81 20 75 f0 5d c3 90 66 2e 0f 1f 84 00 00 00 00 00 <8
0> 3f 00 55 48 89 e5 74 11 48 89 f8 48 83 c0 01 80 38 00 75 f7
[ 508.564156] RIP [<ffffffff813fe6c0>] strlen+0x0/0x20
[ 508.624889] RSP <ffff880061a73a20>
[ 508.666696] CR2: fffffffffffffff3
[ 508.706425] ---[ end trace 9a8196367a1a3630 ]---
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