Revision dbf520a9d7d4d5ba28d2947be11e34099a5e3e20 authored by Paul Walmsley on 31 March 2013, 00:04:40 UTC, committed by Linus Torvalds on 31 March 2013, 18:38:33 UTC
This reverts commit 6aa9707099c4b25700940eb3d016f16c4434360d.
Commit 6aa9707099c4 ("lockdep: check that no locks held at freeze time")
causes problems with NFS root filesystems. The failures were noticed on
OMAP2 and 3 boards during kernel init:
[ BUG: swapper/0/1 still has locks held! ]
3.9.0-rc3-00344-ga937536 #1 Not tainted
-------------------------------------
1 lock held by swapper/0/1:
#0: (&type->s_umount_key#13/1){+.+.+.}, at: [<c011e84c>] sget+0x248/0x574
stack backtrace:
rpc_wait_bit_killable
__wait_on_bit
out_of_line_wait_on_bit
__rpc_execute
rpc_run_task
rpc_call_sync
nfs_proc_get_root
nfs_get_root
nfs_fs_mount_common
nfs_try_mount
nfs_fs_mount
mount_fs
vfs_kern_mount
do_mount
sys_mount
do_mount_root
mount_root
prepare_namespace
kernel_init_freeable
kernel_init
Although the rootfs mounts, the system is unstable. Here's a transcript
from a PM test:
http://www.pwsan.com/omap/testlogs/test_v3.9-rc3/20130317194234/pm/37xxevm/37xxevm_log.txt
Here's what the test log should look like:
http://www.pwsan.com/omap/testlogs/test_v3.8/20130218214403/pm/37xxevm/37xxevm_log.txt
Mailing list discussion is here:
http://lkml.org/lkml/2013/3/4/221
Deal with this for v3.9 by reverting the problem commit, until folks can
figure out the right long-term course of action.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Mandeep Singh Baines <msb@chromium.org>
Cc: Jeff Layton <jlayton@redhat.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: <maciej.rutecki@gmail.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ben Chan <benchan@chromium.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 13d2080
dontdiff
*.a
*.aux
*.bin
*.bz2
*.cis
*.cpio
*.csp
*.dsp
*.dvi
*.elf
*.eps
*.fw
*.gcno
*.gcov
*.gen.S
*.gif
*.grep
*.grp
*.gz
*.html
*.i
*.jpeg
*.ko
*.log
*.lst
*.lzma
*.lzo
*.mo
*.moc
*.mod.c
*.o
*.o.*
*.order
*.orig
*.out
*.patch
*.pdf
*.png
*.pot
*.ps
*.rej
*.s
*.sgml
*.so
*.so.dbg
*.symtypes
*.tab.c
*.tab.h
*.tex
*.ver
*.xml
*.xz
*_MODULES
*_vga16.c
*~
\#*#
*.9
.*
.*.d
.mm
53c700_d.h
CVS
ChangeSet
GPATH
GRTAGS
GSYMS
GTAGS
Image
Module.markers
Module.symvers
PENDING
SCCS
System.map*
TAGS
aconf
af_names.h
aic7*reg.h*
aic7*reg_print.c*
aic7*seq.h*
aicasm
aicdb.h*
altivec*.c
asm-offsets.h
asm_offsets.h
autoconf.h*
av_permissions.h
bbootsect
bin2c
binkernel.spec
bootsect
bounds.h
bsetup
btfixupprep
build
bvmlinux
bzImage*
capability_names.h
capflags.c
classlist.h*
comp*.log
compile.h*
conf
config
config-*
config_data.h*
config.mak
config.mak.autogen
conmakehash
consolemap_deftbl.c*
cpustr.h
crc32table.h*
cscope.*
defkeymap.c
devlist.h*
dnotify_test
docproc
dslm
elf2ecoff
elfconfig.h*
evergreen_reg_safe.h
fixdep
flask.h
fore200e_mkfirm
fore200e_pca_fw.c*
gconf
gconf.glade.h
gen-devlist
gen_crc32table
gen_init_cpio
generated
genheaders
genksyms
*_gray256.c
hpet_example
hugepage-mmap
hugepage-shm
ihex2fw
ikconfig.h*
inat-tables.c
initramfs_list
int16.c
int1.c
int2.c
int32.c
int4.c
int8.c
kallsyms
kconfig
keywords.c
ksym.c*
ksym.h*
kxgettext
lex.c
lex.*.c
linux
logo_*.c
logo_*_clut224.c
logo_*_mono.c
lxdialog
mach-types
mach-types.h
machtypes.h
map
map_hugetlb
media
mconf
miboot*
mk_elfconfig
mkboot
mkbugboot
mkcpustr
mkdep
mkprep
mkregtable
mktables
mktree
modpost
modules.builtin
modules.order
modversions.h*
nconf
ncscope.*
offset.h
oui.c*
page-types
parse.c
parse.h
patches*
pca200e.bin
pca200e_ecd.bin2
perf.data
perf.data.old
perf-archive
piggyback
piggy.gzip
piggy.S
pnmtologo
ppc_defs.h*
pss_boot.h
qconf
r100_reg_safe.h
r200_reg_safe.h
r300_reg_safe.h
r420_reg_safe.h
r600_reg_safe.h
recordmcount
relocs
rlim_names.h
rn50_reg_safe.h
rs600_reg_safe.h
rv515_reg_safe.h
series
setup
setup.bin
setup.elf
sImage
sm_tbl*
split-include
syscalltab.h
tables.c
tags
test_get_len
tftpboot.img
timeconst.h
times.h*
trix_boot.h
utsrelease.h*
vdso-syms.lds
vdso.lds
vdso32-int80-syms.lds
vdso32-syms.lds
vdso32-syscall-syms.lds
vdso32-sysenter-syms.lds
vdso32.lds
vdso32.so.dbg
vdso64.lds
vdso64.so.dbg
version.h*
vmImage
vmlinux
vmlinux-*
vmlinux.aout
vmlinux.bin.all
vmlinux.lds
vmlinuz
voffset.h
vsyscall.lds
vsyscall_32.lds
wanxlfw.inc
uImage
unifdef
wakeup.bin
wakeup.elf
wakeup.lds
zImage*
zconf.hash.c
zoffset.h
Computing file changes ...
