# git rev-parse -q --verify a3ac7917b73070010c05b4485b8582a6c9cd69b6^{commit}
a3ac7917b73070010c05b4485b8582a6c9cd69b6
already have revision, skipping fetch
# git checkout -q -f -B kisskb a3ac7917b73070010c05b4485b8582a6c9cd69b6
# git clean -qxdf
# < git log -1
# commit a3ac7917b73070010c05b4485b8582a6c9cd69b6
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Mar 25 14:49:00 2019 -0700
# 
#     Revert "parport: daisy: use new parport device model"
#     
#     This reverts commit 1aec4211204d9463d1fd209eb50453de16254599.
#     
#     Steven Rostedt reports that it causes a hang at bootup and bisected it
#     to this commit.
#     
#     The troigger is apparently a module alias for "parport_lowlevel" that
#     points to "parport_pc", which causes a hang with
#     
#         modprobe -q -- parport_lowlevel
#     
#     blocking forever with a backtrace like this:
#     
#         wait_for_completion_killable+0x1c/0x28
#         call_usermodehelper_exec+0xa7/0x108
#         __request_module+0x351/0x3d8
#         get_lowlevel_driver+0x28/0x41 [parport]
#         __parport_register_driver+0x39/0x1f4 [parport]
#         daisy_drv_init+0x31/0x4f [parport]
#         parport_bus_init+0x5d/0x7b [parport]
#         parport_default_proc_register+0x26/0x1000 [parport]
#         do_one_initcall+0xc2/0x1e0
#         do_init_module+0x50/0x1d4
#         load_module+0x1c2e/0x21b3
#         sys_init_module+0xef/0x117
#     
#     Supid says:
#      "Due to the new device model daisy driver will now try to find the
#       parallel ports while trying to register its driver so that it can bind
#       with them. Now, since daisy driver is loaded while parport bus is
#       initialising the list of parport is still empty and it tries to load
#       the lowlevel driver, which has an alias set to parport_pc, now causes
#       a deadlock"
#     
#     But I don't think the daisy driver should be loaded by the parport
#     initialization in the first place, so let's revert the whole change.
#     
#     If the daisy driver can just initialize separately on its own (like a
#     driver should), instead of hooking into the parport init sequence
#     directly, this issue probably would go away.
#     
#     Reported-and-bisected-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
#     Reported-by: Michal Kubecek <mkubecek@suse.cz>
#     Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
#     Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version
# < git log --format=%s --max-count=1 a3ac7917b73070010c05b4485b8582a6c9cd69b6
# < make -s -j 8 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  randconfig
KCONFIG_SEED=0xBBB44D41
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_CPU_BIG_ENDIAN=y
# Added to kconfig CONFIG_PPC64=y
# Added to kconfig CONFIG_PPC_DISABLE_WERROR=y
# Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_LD_HEAD_STUB_CATCH=y
# Added to kconfig 
# yes \n | make -s -j 8 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 8 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
<stdin>:1478:2: warning: #warning syscall pidfd_send_signal not implemented [-Wcpp]
<stdin>:1481:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp]
<stdin>:1484:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp]
<stdin>:1487:2: warning: #warning syscall io_uring_register not implemented [-Wcpp]
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/ipc/shm.c: In function 'ksys_shmdt':
/kisskb/src/ipc/shm.c:1712:59: warning: 'file' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/ipc/shm.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:187:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/printk/printk.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields':
/kisskb/src/kernel/rcu/srcutree.c:140:32: warning: 'levelspread[<Uca00>]' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c:88:6: note: 'levelspread[<Uca00>]' was declared here
/kisskb/src/kernel/rcu/srcutree.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:337:21: note: 'pdeo' was declared here
/kisskb/src/fs/proc/inode.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/mm/ksm.c: In function '__stable_node_chain':
/kisskb/src/mm/ksm.c:1408:15: warning: 'found_rmap_hlist_len' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/ksm.c:1380:6: note: 'found_rmap_hlist_len' was declared here
/kisskb/src/mm/ksm.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/mm/memcontrol.c: In function 'mem_cgroup_commit_charge':
/kisskb/src/mm/memcontrol.c:2383:5: warning: 'isolated' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/memcontrol.c:2397:6: note: 'isolated' was declared here
/kisskb/src/mm/memcontrol.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
In file included from /kisskb/src/arch/powerpc/xmon/xmon.c:67:0:
/kisskb/src/arch/powerpc/xmon/dis-asm.h: In function 'print_insn_powerpc':
/kisskb/src/arch/powerpc/xmon/dis-asm.h:20:2: warning: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'long unsigned int' [-Wformat]
/kisskb/src/arch/powerpc/xmon/dis-asm.h: In function 'print_insn_spu':
/kisskb/src/arch/powerpc/xmon/dis-asm.h:26:2: warning: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'long unsigned int' [-Wformat]
/kisskb/src/lib/mpi/mpicoder.c: In function 'mpi_read_raw_from_sgl':
/kisskb/src/lib/mpi/mpicoder.c:352:8: warning: 'buff' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/mpi/mpicoder.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/lib/rhashtable.c: In function 'rht_deferred_worker':
/kisskb/src/lib/rhashtable.c:264:2: warning: 'next' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/rhashtable.c:229:28: note: 'next' was declared here
/kisskb/src/lib/rhashtable.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/hwspinlock/hwspinlock_core.c: In function 'of_hwspin_lock_get_id':
/kisskb/src/drivers/hwspinlock/hwspinlock_core.c:328:6: warning: 'id' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/hwspinlock/hwspinlock_core.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/i2c/i2c-core-base.c: In function 'i2c_generic_scl_recovery':
/kisskb/src/drivers/i2c/i2c-core-base.c:235:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/i2c/i2c-core-base.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/input/mouse/cyapa.c: In function 'cyapa_irq':
/kisskb/src/drivers/input/mouse/cyapa.c:717:27: warning: 'error' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/input/mouse/cyapa.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/input/mouse/cyapa_gen3.c: In function 'cyapa_gen3_set_power_mode':
/kisskb/src/drivers/input/mouse/cyapa_gen3.c:927:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/input/mouse/cyapa_gen3.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/input/touchscreen/hideep.c: In function 'hideep_update_fw':
/kisskb/src/drivers/input/touchscreen/hideep.c:633:3: warning: 'error' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/input/touchscreen/hideep.c:605:6: note: 'error' was declared here
/kisskb/src/drivers/input/touchscreen/hideep.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/mfd/arizona-core.c: In function 'arizona_dev_init':
/kisskb/src/drivers/mfd/arizona-core.c:1422:6: warning: 'n_subdevs' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/mfd/arizona-core.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/misc/cxl/native.c: In function 'native_irq_wait':
/kisskb/src/drivers/misc/cxl/native.c:1248:2: warning: 'ph' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/misc/cxl/native.c:1248:2: warning: 'dsisr' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/misc/cxl/native.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/iio/temperature/mlx90632.c: In function 'mlx90632_read_raw':
/kisskb/src/drivers/iio/temperature/mlx90632.c:349:37: warning: 'object_old_raw' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/iio/temperature/mlx90632.c:430:56: note: 'object_old_raw' was declared here
/kisskb/src/drivers/iio/temperature/mlx90632.c:349:37: warning: 'object_new_raw' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/iio/temperature/mlx90632.c:430:40: note: 'object_new_raw' was declared here
/kisskb/src/drivers/iio/temperature/mlx90632.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/gpu/drm/scheduler/sched_main.c: In function 'drm_sched_resubmit_jobs':
/kisskb/src/drivers/gpu/drm/scheduler/sched_main.c:476:20: warning: 'guilty_context' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/scheduler/sched_main.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c: In function 'drm_dp_sideband_msg_build':
/kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c:423:23: warning: 'hdrlen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:242:2: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here
/kisskb/src/drivers/tty/serial/8250/8250_core.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/gpu/drm/drm_atomic.c: In function 'drm_atomic_check_only':
/kisskb/src/drivers/gpu/drm/drm_atomic.c:420:38: warning: 'crtc_state' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/drm_atomic.c:399:25: note: 'crtc_state' was declared here
/kisskb/src/drivers/gpu/drm/drm_atomic.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/usb/misc/usbtest.c: In function 'test_queue':
/kisskb/src/drivers/usb/misc/usbtest.c:2148:1: warning: the frame size of 1248 bytes is larger than 1024 bytes [-Wframe-larger-than=]
/kisskb/src/drivers/video/backlight/adp8860_bl.c: In function 'adp8860_bl_ambient_light_level_show':
/kisskb/src/drivers/video/backlight/adp8860_bl.c:579:10: warning: 'ret_val' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/video/backlight/adp8860_bl.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/usb/misc/usbtest.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
/kisskb/src/drivers/usb/serial/cp210x.c: In function 'cp210x_tx_empty':
/kisskb/src/drivers/usb/serial/cp210x.c:878:2: warning: 'count' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/usb/serial/cp210x.c: At top level:
cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default]
Completed OK
# rm -rf /kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.6
# Build took: 0:03:57.656219