# git rev-parse -q --verify ab6f762f0f53162d41497708b33c9a3236d3609e^{commit}
ab6f762f0f53162d41497708b33c9a3236d3609e
already have revision, skipping fetch
# git checkout -q -f -B kisskb ab6f762f0f53162d41497708b33c9a3236d3609e
# git clean -qxdf
# < git log -1
# commit ab6f762f0f53162d41497708b33c9a3236d3609e
# Author: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
# Date:   Tue Mar 3 20:30:02 2020 +0900
# 
#     printk: queue wake_up_klogd irq_work only if per-CPU areas are ready
#     
#     printk_deferred(), similarly to printk_safe/printk_nmi, does not
#     immediately attempt to print a new message on the consoles, avoiding
#     calls into non-reentrant kernel paths, e.g. scheduler or timekeeping,
#     which potentially can deadlock the system.
#     
#     Those printk() flavors, instead, rely on per-CPU flush irq_work to print
#     messages from safer contexts.  For same reasons (recursive scheduler or
#     timekeeping calls) printk() uses per-CPU irq_work in order to wake up
#     user space syslog/kmsg readers.
#     
#     However, only printk_safe/printk_nmi do make sure that per-CPU areas
#     have been initialised and that it's safe to modify per-CPU irq_work.
#     This means that, for instance, should printk_deferred() be invoked "too
#     early", that is before per-CPU areas are initialised, printk_deferred()
#     will perform illegal per-CPU access.
#     
#     Lech Perczak [0] reports that after commit 1b710b1b10ef ("char/random:
#     silence a lockdep splat with printk()") user-space syslog/kmsg readers
#     are not able to read new kernel messages.
#     
#     The reason is printk_deferred() being called too early (as was pointed
#     out by Petr and John).
#     
#     Fix printk_deferred() and do not queue per-CPU irq_work before per-CPU
#     areas are initialized.
#     
#     Link: https://lore.kernel.org/lkml/aa0732c6-5c4e-8a8b-a1c1-75ebe3dca05b@camlintechnologies.com/
#     Reported-by: Lech Perczak <l.perczak@camlintechnologies.com>
#     Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
#     Tested-by: Jann Horn <jannh@google.com>
#     Reviewed-by: Petr Mladek <pmladek@suse.com>
#     Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
#     Cc: Theodore Ts'o <tytso@mit.edu>
#     Cc: John Ogness <john.ogness@linutronix.de>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/nds32le-linux/bin/nds32le-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/nds32le-linux/bin/nds32le-linux-ld --version
# < git log --format=%s --max-count=1 ab6f762f0f53162d41497708b33c9a3236d3609e
# < make -s -j 48 ARCH=nds32 O=/kisskb/build/linus_nds32-allyesconfig_nds32le-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/nds32le-linux/bin/nds32le-linux-  allyesconfig
# < make -s -j 48 ARCH=nds32 O=/kisskb/build/linus_nds32-allyesconfig_nds32le-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/nds32le-linux/bin/nds32le-linux-  help
# make -s -j 48 ARCH=nds32 O=/kisskb/build/linus_nds32-allyesconfig_nds32le-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/nds32le-linux/bin/nds32le-linux-  olddefconfig
# make -s -j 48 ARCH=nds32 O=/kisskb/build/linus_nds32-allyesconfig_nds32le-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/nds32le-linux/bin/nds32le-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
In file included from /kisskb/src/drivers/net/phy/mdio-cavium.c:11:
/kisskb/src/drivers/net/phy/mdio-cavium.c: In function 'cavium_mdiobus_set_mode':
/kisskb/src/drivers/net/phy/mdio-cavium.h:114:37: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_readq(addr)  readq((void *)addr)
                                     ^
/kisskb/src/drivers/net/phy/mdio-cavium.c:21:16: note: in expansion of macro 'oct_mdio_readq'
  smi_clk.u64 = oct_mdio_readq(p->register_base + SMI_CLK);
                ^~~~~~~~~~~~~~
/kisskb/src/drivers/net/phy/mdio-cavium.h:113:48: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr)
                                                ^
/kisskb/src/drivers/net/phy/mdio-cavium.c:24:2: note: in expansion of macro 'oct_mdio_writeq'
  oct_mdio_writeq(smi_clk.u64, p->register_base + SMI_CLK);
  ^~~~~~~~~~~~~~~
/kisskb/src/drivers/net/phy/mdio-cavium.c: In function 'cavium_mdiobus_c45_addr':
/kisskb/src/drivers/net/phy/mdio-cavium.h:113:48: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr)
                                                ^
/kisskb/src/drivers/net/phy/mdio-cavium.c:39:2: note: in expansion of macro 'oct_mdio_writeq'
  oct_mdio_writeq(smi_wr.u64, p->register_base + SMI_WR_DAT);
  ^~~~~~~~~~~~~~~
/kisskb/src/drivers/net/phy/mdio-cavium.h:113:48: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr)
                                                ^
/kisskb/src/drivers/net/phy/mdio-cavium.c:47:2: note: in expansion of macro 'oct_mdio_writeq'
  oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);
  ^~~~~~~~~~~~~~~
/kisskb/src/drivers/net/phy/mdio-cavium.h:114:37: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_readq(addr)  readq((void *)addr)
                                     ^
/kisskb/src/drivers/net/phy/mdio-cavium.c:54:16: note: in expansion of macro 'oct_mdio_readq'
   smi_wr.u64 = oct_mdio_readq(p->register_base + SMI_WR_DAT);
                ^~~~~~~~~~~~~~
/kisskb/src/drivers/net/phy/mdio-cavium.c: In function 'cavium_mdiobus_read':
/kisskb/src/drivers/net/phy/mdio-cavium.h:113:48: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr)
                                                ^
/kisskb/src/drivers/net/phy/mdio-cavium.c:86:2: note: in expansion of macro 'oct_mdio_writeq'
  oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);
  ^~~~~~~~~~~~~~~
/kisskb/src/drivers/net/phy/mdio-cavium.h:114:37: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_readq(addr)  readq((void *)addr)
                                     ^
/kisskb/src/drivers/net/phy/mdio-cavium.c:93:16: note: in expansion of macro 'oct_mdio_readq'
   smi_rd.u64 = oct_mdio_readq(p->register_base + SMI_RD_DAT);
                ^~~~~~~~~~~~~~
/kisskb/src/drivers/net/phy/mdio-cavium.c: In function 'cavium_mdiobus_write':
/kisskb/src/drivers/net/phy/mdio-cavium.h:113:48: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr)
                                                ^
/kisskb/src/drivers/net/phy/mdio-cavium.c:125:2: note: in expansion of macro 'oct_mdio_writeq'
  oct_mdio_writeq(smi_wr.u64, p->register_base + SMI_WR_DAT);
  ^~~~~~~~~~~~~~~
/kisskb/src/drivers/net/phy/mdio-cavium.h:113:48: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr)
                                                ^
/kisskb/src/drivers/net/phy/mdio-cavium.c:131:2: note: in expansion of macro 'oct_mdio_writeq'
  oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);
  ^~~~~~~~~~~~~~~
/kisskb/src/drivers/net/phy/mdio-cavium.h:114:37: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_readq(addr)  readq((void *)addr)
                                     ^
/kisskb/src/drivers/net/phy/mdio-cavium.c:138:16: note: in expansion of macro 'oct_mdio_readq'
   smi_wr.u64 = oct_mdio_readq(p->register_base + SMI_WR_DAT);
                ^~~~~~~~~~~~~~
/kisskb/src/drivers/net/phy/mdio-octeon.c: In function 'octeon_mdiobus_probe':
/kisskb/src/drivers/net/phy/mdio-octeon.c:48:3: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
   (u64)devm_ioremap(&pdev->dev, mdio_phys, regsize);
   ^
In file included from /kisskb/src/drivers/net/phy/mdio-octeon.c:14:
/kisskb/src/drivers/net/phy/mdio-cavium.h:113:48: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr)
                                                ^
/kisskb/src/drivers/net/phy/mdio-octeon.c:56:2: note: in expansion of macro 'oct_mdio_writeq'
  oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN);
  ^~~~~~~~~~~~~~~
/kisskb/src/drivers/net/phy/mdio-cavium.h:113:48: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr)
                                                ^
/kisskb/src/drivers/net/phy/mdio-octeon.c:77:2: note: in expansion of macro 'oct_mdio_writeq'
  oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN);
  ^~~~~~~~~~~~~~~
/kisskb/src/drivers/net/phy/mdio-octeon.c: In function 'octeon_mdiobus_remove':
/kisskb/src/drivers/net/phy/mdio-cavium.h:113:48: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr)
                                                ^
/kisskb/src/drivers/net/phy/mdio-octeon.c:91:2: note: in expansion of macro 'oct_mdio_writeq'
  oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN);
  ^~~~~~~~~~~~~~~
/kisskb/src/drivers/input/joystick/analog.c:160:2: warning: #warning Precise timer not defined for this architecture. [-Wcpp]
 #warning Precise timer not defined for this architecture.
  ^~~~~~~
WARNING: modpost: EXPORT symbol "copy_page" [vmlinux] version generation failed, symbol will not be versioned.
WARNING: modpost: EXPORT symbol "clear_page" [vmlinux] version generation failed, symbol will not be versioned.
Completed OK
# rm -rf /kisskb/build/linus_nds32-allyesconfig_nds32le-gcc8
# Build took: 0:11:38.196758