Hello!
Running xfstests (git) suite , I'm getting git kernel OOPS :
Debian GNU/Linux buster/sid ttip console
ttip login: [ 32.181114] loop: module loaded
[ 73.785279] XFS (vdiskb1): Mounting V5 Filesystem
[ 73.800044] XFS (vdiskb1): Starting recovery (logdev: internal)
[ 73.804064] XFS (vdiskb1): Ending recovery (logdev: internal)
[ 77.527548] XFS (loop0): Mounting V5 Filesystem
[ 77.535114] XFS (loop0): Ending clean mount
[ 77.644657] XFS (vdiskb1): Unmounting Filesystem
[ 77.933610] XFS (vdiskb1): Mounting V5 Filesystem
[ 77.948151] XFS (vdiskb1): Ending clean mount
[ 78.040921] run fstests generic/081 at 2017-08-20 12:46:15
[ 78.780493] XFS (loop0): Unmounting Filesystem
[ 80.192977] Unable to handle kernel NULL pointer dereference
[ 80.193072] tsk->{mm,active_mm}->context = 00000000000006ce
[ 80.193116] tsk->{mm,active_mm}->pgd = fff80040964b8000
[ 80.193152] \|/ ____ \|/
[ 80.193152] "@'/ .. \`@"
[ 80.193152] /_| \__/ |_\
[ 80.193152] \__U_/
[ 80.193232] lvm(1595): Oops [#1]
[ 80.193259] CPU: 5 PID: 1595 Comm: lvm Not tainted
4.13.0-rc5-00173-g58d4e450a490 #420
[ 80.193307] task: fff800409f410c40 task.stack: fff8004097e4c000
[ 80.193346] TSTATE: 0000004411001602 TPC: 00000000004d06e4 TNPC:
00000000004d06e8 Y: 0000016b Not tainted
[ 80.193412] TPC: <lockdep_trace_alloc+0x4/0x140>
[ 80.193444] g0: 0000000000c61800 g1: 00000000014000c0 g2:
0000000000000000 g3: 0000000000000000
[ 80.193496] g4: 0000000000000000 g5: 0000000000000000 g6:
fff8004097e4c000 g7: 0000000000000000
[ 80.193550] o0: 000000010b788020 o1: 0000000000000400 o2:
fff8004096936898 o3: 00000000105ff260
[ 80.193603] o4: fff8004096936800 o5: 0000000000000001 sp:
fff8004097e4eae1 ret_pc: 00000000008a1f98
[ 80.193664] RPC: <dm_table_add_target+0x298/0x360>
[ 80.193697] l0: fff800409f410c40 l1: 00000000010d2ea0 l2:
0000000001555c00 l3: fff800409f4114d0
[ 80.193749] l4: 0000000000c61800 l5: 00000000010aaea0 l6:
0000000000db3bf0 l7: 0000000000000050
[ 80.193802] i0: 00000000014080c0 i1: 0000000000000100 i2:
0000000000000100 i3: 0000000000000000
[ 80.193855] i4: 0000000000000001 i5: 0000000000c61800 i6:
fff8004097e4eb91 i7: 000000000063841c
[ 80.193911] I7: <kmem_cache_alloc_trace+0x1c/0x3e0>
[ 80.193944] Call Trace:
[ 80.193968] [000000000063841c] kmem_cache_alloc_trace+0x1c/0x3e0
[ 80.194011] [000000000061b318] __get_vm_area_node.isra.5+0x1b8/0x260
[ 80.194052] [000000000061bc98] __vmalloc_node_range+0x58/0x2c0
[ 80.194092] [000000000061c0c0] vzalloc+0x40/0x60
[ 80.194125] [00000000008a0b28] dm_vcalloc+0x28/0x40
[ 80.194164] [00000000105fae58] dm_exception_table_init+0x18/0x80
[dm_snapshot]
[ 80.194214] [00000000105fba78] snapshot_ctr+0x2b8/0x720 [dm_snapshot]
[ 80.194255] [00000000008a1f98] dm_table_add_target+0x298/0x360
[ 80.194294] [00000000008a6448] table_load+0x2c8/0x360
[ 80.194330] [00000000008a70c8] ctl_ioctl+0x348/0x440
[ 80.194364] [00000000008a71d4] dm_ctl_ioctl+0x14/0x40
[ 80.194401] [00000000006754e4] do_vfs_ioctl+0x644/0x6a0
[ 80.194437] [0000000000675590] SyS_ioctl+0x50/0x80
[ 80.194473] [0000000000406234] linux_sparc_syscall+0x34/0x44
[ 80.194510] Disabling lock debugging due to kernel taint
[ 80.194533] Caller[000000000063841c]: kmem_cache_alloc_trace+0x1c/0x3e0
[ 80.194557] Caller[000000000061b318]: __get_vm_area_node.isra.5+0x1b8/0x260
[ 80.194581] Caller[000000000061bc98]: __vmalloc_node_range+0x58/0x2c0
[ 80.194605] Caller[000000000061c0c0]: vzalloc+0x40/0x60
[ 80.194625] Caller[00000000008a0b28]: dm_vcalloc+0x28/0x40
[ 80.194647] Caller[00000000105fae58]:
dm_exception_table_init+0x18/0x80 [dm_snapshot]
[ 80.194677] Caller[00000000105fba78]: snapshot_ctr+0x2b8/0x720 [dm_snapshot]
[ 80.194701] Caller[00000000008a1f98]: dm_table_add_target+0x298/0x360
[ 80.194724] Caller[00000000008a6448]: table_load+0x2c8/0x360
[ 80.194786] Caller[00000000008a70c8]: ctl_ioctl+0x348/0x440
[ 80.194813] Caller[00000000008a71d4]: dm_ctl_ioctl+0x14/0x40
[ 80.194839] Caller[00000000006754e4]: do_vfs_ioctl+0x644/0x6a0
[ 80.194865] Caller[0000000000675590]: SyS_ioctl+0x50/0x80
[ 80.194890] Caller[0000000000406234]: linux_sparc_syscall+0x34/0x44
[ 80.194916] Caller[fff80001005e2484]: 0xfff80001005e2484
[ 80.194938] Instruction DUMP:
[ 80.194942] 01000000
[ 80.194958] 01000000
[ 80.194972] 9de3bf50
[ 80.194986] <c20128b4>
[ 80.195000] 80a06000
[ 80.195014] 12400048
[ 80.195029] 01000000
[ 80.195044] bb520000
[ 80.195059] 8217600e
[ 80.195073]
steps to reproduce:
git clone https://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git
configure && make && make install
xfstests-dev$ cat local.config
export TEST_DIR=/testvol
export TEST_DEV=/dev/vdiskb1
export SCRATCH_DEV_POOL="/dev/loop0 /dev/loop1 /dev/loop2"
export SCRATCH_MNT=/1/scratch
loop devices are in tmpfs:
$ mount tmpfs -t tmpfs -o size=30G /ramdisk
$ for i in 1 2 3; do fallocate -l 10G /ramdisk/$i; losetup --find
/ramdisk/$i; done
vdiskb1 is xfs filesystem.
kernel OOPS test is generic/081 :
xfstests-dev# ./check generic/081
FSTYP -- xfs (non-debug)
PLATFORM -- Linux/sparc64 ttip 4.13.0-rc5-00173-g58d4e450a490
MKFS_OPTIONS -- -f -bsize=4096 /dev/loop0
MOUNT_OPTIONS -- /dev/loop0 /1/scratch
generic/081 7s ...
(never ends, hangs on kernel OOPS)
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