Buildresult: linus/chrp32_defconfig/powerpc-gcc4.6 built on Jan 15 2019, 17:50

kisskb

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Status:	OK
Date/Time:	Jan 15 2019, 17:50
Duration:	0:00:49.627916
Builder:	ka4
Revision:	sbitmap: Protect swap_lock from hardirq (`fe76fc6aaf538df27708ffa3e5d549a6c8e16142)`
Target:	linus/chrp32_defconfig/powerpc-gcc4.6
Branch:	linus
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	chrp32_defconfig (download)
Log:	Download original Possible warnings (7) kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/srcutree.c:152:32: warning: 'levelspread[<U80a0>]' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:2594:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:1855:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] drivers/i2c/i2c-core-base.c:235:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify fe76fc6aaf538df27708ffa3e5d549a6c8e16142^{commit} fe76fc6aaf538df27708ffa3e5d549a6c8e16142 already have revision, skipping fetch # git checkout -q -f -B kisskb fe76fc6aaf538df27708ffa3e5d549a6c8e16142 # git clean -qxdf # < git log -1 # commit fe76fc6aaf538df27708ffa3e5d549a6c8e16142 # Author: Ming Lei <ming.lei@redhat.com> # Date: Tue Jan 15 11:59:52 2019 +0800 # # sbitmap: Protect swap_lock from hardirq # # Because we may call blk_mq_get_driver_tag() directly from # blk_mq_dispatch_rq_list() without holding any lock, then HARDIRQ may # come and the above DEADLOCK is triggered. # # Commit ab53dcfb3e7b ("sbitmap: Protect swap_lock from hardirq") tries to # fix this issue by using 'spin_lock_bh', which isn't enough because we # complete request from hardirq context direclty in case of multiqueue. # # Cc: Clark Williams <williams@redhat.com> # Fixes: ab53dcfb3e7b ("sbitmap: Protect swap_lock from hardirq") # Cc: Jens Axboe <axboe@kernel.dk> # Cc: Ming Lei <ming.lei@redhat.com> # Cc: Guenter Roeck <linux@roeck-us.net> # Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> # Signed-off-by: Ming Lei <ming.lei@redhat.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 fe76fc6aaf538df27708ffa3e5d549a6c8e16142 # < make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_chrp32_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- chrp32_defconfig # make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_chrp32_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields': /kisskb/src/kernel/rcu/srcutree.c:152:32: warning: 'levelspread[<U80a0>]' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/rcu/srcutree.c:100:6: note: 'levelspread[<U80a0>]' was declared here /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2594:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write': /kisskb/src/drivers/base/regmap/regmap.c:1855:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /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:339:21: note: 'pdeo' was declared here /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/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:247:18: 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 Completed OK # rm -rf /kisskb/build/linus_chrp32_defconfig_powerpc-gcc4.6 # Build took: 0:00:49.627916

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