# git rev-parse -q --verify 4399efc3f2f04ad8e6948461795de04ed1358402^{commit} 4399efc3f2f04ad8e6948461795de04ed1358402 already have revision, skipping fetch # git checkout -q -f -B kisskb 4399efc3f2f04ad8e6948461795de04ed1358402 # git clean -qxdf # < git log -1 # commit 4399efc3f2f04ad8e6948461795de04ed1358402 # Author: Gustavo Luiz Duarte # Date: Mon Feb 3 13:09:06 2020 -0300 # # selftests/powerpc: Don't rely on segfault to rerun the test # # The test case tm-signal-context-force-tm expects a segfault to happen on # returning from signal handler, and then does a setcontext() to run the test # again. However, the test doesn't always segfault, causing the test to run a # single time. # # This patch fixes the test by putting it within a loop and jumping, via # setcontext, just prior to the loop in case it segfaults. This way we get the # desired behavior (run the test COUNT_MAX times) regardless if it segfaults or # not. This also reduces the use of setcontext for control flow logic, keeping it # only in the segfault handler. # # Also, since 'count' is changed within the signal handler, it is declared as # volatile to prevent any compiler optimization getting confused with # asynchronous changes. # # Signed-off-by: Gustavo Luiz Duarte # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20200203160906.24482-3-gustavold@linux.ibm.com # < /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 4399efc3f2f04ad8e6948461795de04ed1358402 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc6xx_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- ppc6xx_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc6xx_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:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2591:6: 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:1852:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/ppc/awacs.c: In function 'snd_pmac_awacs_init': /kisskb/src/include/sound/control.h:208:2: warning: 'speaker_vol' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/ppc/awacs.c:873:36: note: 'speaker_vol' was declared here /kisskb/src/fs/ext4/extents.c: In function 'ext4_convert_unwritten_io_end_vec': /kisskb/src/fs/ext4/extents.c:5054:23: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/bridge/br_netlink.c: In function 'br_afspec.isra.30': /kisskb/src/net/bridge/br_netlink.c:648:7: warning: 'err' 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:338:21: note: 'pdeo' was declared here /kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc': /kisskb/src/fs/nfsd/nfs4xdr.c:2076:9: warning: 'str' 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:248:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:228:19: note: 'i' was declared here /kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char': /kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/usb/core/devio.c: In function 'async_completed': /kisskb/src/drivers/usb/core/devio.c:625:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/mac80211/mlme.c: In function 'ieee80211_rx_mgmt_beacon': /kisskb/src/net/mac80211/mlme.c:1576:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/mac80211/mlme.c:1533:6: note: 'pwr_level_cisco' was declared here /kisskb/src/drivers/net/tun.c: In function 'tun_get_user': /kisskb/src/drivers/net/tun.c:1836:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1749:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] INFO: Uncompressed kernel (size 0xa1a274) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa1a274) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa1a274) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa1a274) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa1a274) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa1a274) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa1a274) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa1a274) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa1a274) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa1a274) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa09bc0) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa09bc0) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) Image Name: Linux-5.5.0+ Created: Wed Feb 5 01:28:48 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4790952 Bytes = 4678.66 KiB = 4.57 MiB Load Address: 00b00000 Entry Point: 00b00290 Image Name: Linux-5.5.0+ Created: Wed Feb 5 01:28:48 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4759967 Bytes = 4648.41 KiB = 4.54 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.5.0+ Created: Wed Feb 5 01:28:49 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4790574 Bytes = 4678.29 KiB = 4.57 MiB Load Address: 00b00000 Entry Point: 00b00290 Image Name: Linux-5.5.0+ Created: Wed Feb 5 01:28:49 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4790501 Bytes = 4678.22 KiB = 4.57 MiB Load Address: 00b00000 Entry Point: 00b00290 Image Name: Linux-5.5.0+ Created: Wed Feb 5 01:28:49 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4791287 Bytes = 4678.99 KiB = 4.57 MiB Load Address: 00b00000 Entry Point: 00b00888 Image Name: Linux-5.5.0+ Created: Wed Feb 5 01:28:50 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4790792 Bytes = 4678.51 KiB = 4.57 MiB Load Address: 00b00000 Entry Point: 00b00290 Image Name: Linux-5.5.0+ Created: Wed Feb 5 01:28:50 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4790316 Bytes = 4678.04 KiB = 4.57 MiB Load Address: 00b00000 Entry Point: 00b00290 Image Name: Linux-5.5.0+ Created: Wed Feb 5 01:28:50 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4790743 Bytes = 4678.46 KiB = 4.57 MiB Load Address: 00b00000 Entry Point: 00b00290 Image Name: Linux-5.5.0+ Created: Wed Feb 5 01:28:50 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4792094 Bytes = 4679.78 KiB = 4.57 MiB Load Address: 00b00000 Entry Point: 00b00888 Completed OK # rm -rf /kisskb/build/powerpc-fixes_ppc6xx_defconfig_powerpc-gcc4.6 # Build took: 0:02:57.067180