On Tue, Nov 4, 2014 at 9:36 AM, Erik Berg <bt...@slipsprogrammoer.no>
wrote:
Pulled the latest btrfs-progs from kdave (v3.17-12-gcafacda) and
using the latest linux release candidate (3.18.0-031800rc3-generic)
from canonical/ubuntu
btrfs fi show
Label: none uuid: 5c5fea06-0319-4e03-a42e-004e64aeed92
Total devices 9 FS bytes used 10.91TiB
devid 2 size 931.48GiB used 928.02GiB path /dev/sdc1
devid 3 size 931.48GiB used 928.02GiB path /dev/sdd1
devid 4 size 1.82TiB used 1.67TiB path /dev/sde1
devid 5 size 2.73TiB used 2.28TiB path /dev/sdf1
devid 6 size 3.64TiB used 2.73TiB path /dev/sdg1
devid 7 size 3.64TiB used 2.73TiB path /dev/sdh1
devid 8 size 931.46GiB used 655.90GiB path /dev/sdb1
devid 9 size 3.64TiB used 2.73TiB path /dev/sdi1
devid 10 size 3.64TiB used 1.79TiB path /dev/sdj1
btrfs fi df
Data, RAID6: total=10.91TiB, used=10.90TiB
System, RAID6: total=96.00MiB, used=800.00KiB
Metadata, RAID6: total=13.23GiB, used=11.79GiB
GlobalReserve, single: total=512.00MiB, used=0.00B
Trying to remove device sdb1, the kernel crashes after a minute or so.
[ 597.576827] ------------[ cut here ]------------
[ 597.617519] kernel BUG at /home/apw/COD/linux/mm/slub.c:3334!
[ 597.668145] invalid opcode: 0000 [#1] SMP
[ 597.704410] Modules linked in: arc4 md4 ipt_MASQUERADE
nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat
nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT
nf_reject_ipv4 xt_CHECKSUM iptable_mangle xt_tcpudp bridge stp llc
ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat
ebtables x_tables gpio_ich intel_rapl x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel cryptd serio_raw hpilo hpwdt 8250_fintek
acpi_power_meter ie31200_edac lpc_ich edac_core ipmi_si
ipmi_msghandler mac_hid lp parport nls_utf8 cifs fscache hid_generic
usbhid hid btrfs xor raid6_pq uas usb_storage tg3 ptp ahci psmouse
libahci pps_core hpsa
[ 598.268179] CPU: 1 PID: 129 Comm: kworker/u128:3 Not tainted
3.18.0-031800rc3-generic #201411022335
[ 598.349925] Hardware name: HP ProLiant MicroServer Gen8, BIOS J06
11/09/2013
[ 598.413231] Workqueue: writeback bdi_writeback_workfn
(flush-btrfs-2)
[ 598.471103] task: ffff8803f16a3c00 ti: ffff880036b70000 task.ti:
ffff880036b70000
[ 598.538393] RIP: 0010:[<ffffffff811c74fd>] [<ffffffff811c74fd>]
kfree+0x16d/0x170
[ 598.606217] RSP: 0018:ffff880036b73528 EFLAGS: 00010246
[ 598.653844] RAX: 01ffff0000000000 RBX: ffff880036b735c8 RCX:
0000000000000000
[ 598.717899] RDX: ffff8803743a6010 RSI: dead000000100100 RDI:
ffff880036b735c8
[ 598.781662] RBP: ffff880036b73558 R08: 0000000000000000 R09:
ffffea0000dadcc0
[ 598.846028] R10: 0000000000000001 R11: 0000000000000010 R12:
ffff8803f1e09800
[ 598.910713] R13: ffff8803ac757d40 R14: ffffffffc04fed0c R15:
ffff880036b735d8
[ 598.975333] FS: 0000000000000000(0000) GS:ffff88040b420000(0000)
knlGS:0000000000000000
[ 599.048512] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 599.100167] CR2: 00007fa9a3854024 CR3: 0000000001c16000 CR4:
00000000001407e0
[ 599.165150] Stack:
[ 599.183305] ffff8803f1e09800 00000dad07c20000 ffff8803f1e09800
ffff8803ac757d40
[ 599.249603] ffff8803ac757d40 ffff880036b735d8 ffff880036b73618
ffffffffc04fed0c
[ 599.316306] ffff8803f1b86b00 ffff880374338000 00000dad07dc0000
ffff880036b73638
[ 599.383404] Call Trace:
[ 599.405429] [<ffffffffc04fed0c>]
btrfs_lookup_csums_range+0x2ac/0x4a0 [btrfs]
Not a new bug unfortunately, but since it is in the error handling
people must not be hitting it often. It's also not related to device
replace.
while (ret < 0 && !list_empty(&tmplist)) {
sums = list_entry(&tmplist, struct btrfs_ordered_sum,
list);
list_del(&sums->list);
kfree(sums);
}
We're trying to call kfree on the on-stack list head. I'm fixing it up
here, thanks for posting the oops!
-chris
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