# git rev-parse -q --verify ebda7e3c2ebb244682d068c7d9ad8ad25404295a^{commit} ebda7e3c2ebb244682d068c7d9ad8ad25404295a already have revision, skipping fetch # git checkout -q -f -B kisskb ebda7e3c2ebb244682d068c7d9ad8ad25404295a # git clean -qxdf # < git log -1 # commit ebda7e3c2ebb244682d068c7d9ad8ad25404295a # Author: Breno Leitao # Date: Tue Jan 8 09:31:21 2019 -0200 # # selftests/powerpc: New TM signal self test # # A new self test that forces MSR[TS] to be set without calling any TM # instruction. This test also tries to cause a page fault at a signal # handler, exactly between MSR[TS] set and tm_recheckpoint(), forcing # thread->texasr to be rewritten with TEXASR[FS] = 0, which will cause a BUG # when tm_recheckpoint() is called. # # This test is not deterministic, since it is hard to guarantee that the page # access will cause a page fault. In order to force more page faults at # signal context, the signal handler and the ucontext are being mapped into a # MADV_DONTNEED memory chunks. # # Tests have shown that the bug could be exposed with few interactions in a # buggy kernel. This test is configured to loop 5000x, having a good chance # to hit the kernel issue in just one run. This self test takes less than # two seconds to run. # # This test uses set/getcontext because the kernel will recheckpoint # zeroed structures, causing the test to segfault, which is undesired because # the test needs to rerun, so, there is a signal handler for SIGSEGV which # will restart the test. # # v2: Uses the MADV_DONTNEED memory advice # v3: Fix memcpy and 32-bits compilation # v4: Does not define unused macros # # Signed-off-by: Breno Leitao # Signed-off-by: Michael Ellerman # < /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 ebda7e3c2ebb244682d068c7d9ad8ad25404295a # < make -s -j 40 ARCH=powerpc O=/kisskb/build/powerpc-next_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 40 ARCH=powerpc O=/kisskb/build/powerpc-next_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:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount': /kisskb/src/kernel/cgroup/cgroup-v1.c:1263:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/cifs/cifssmb.c: In function '__cifs_reconnect_tcon': /kisskb/src/fs/cifs/cifssmb.c:186:1: warning: the frame size of 1328 bytes is larger than 1024 bytes [-Wframe-larger-than=] /kisskb/src/kernel/trace/trace_dynevent.c: In function 'create_dyn_event': /kisskb/src/kernel/trace/trace_dynevent.c:89:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/cifs/smb2pdu.c: In function '__smb2_reconnect': /kisskb/src/fs/cifs/smb2pdu.c:220:1: warning: the frame size of 1328 bytes is larger than 1024 bytes [-Wframe-larger-than=] /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/sound/ppc/awacs.c: In function 'snd_pmac_awacs_init': /kisskb/src/include/sound/control.h:223:2: warning: 'speaker_vol' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/ppc/awacs.c:886:36: note: 'speaker_vol' 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/net/bridge/br_netlink.c: In function 'br_afspec.isra.28': /kisskb/src/net/bridge/br_netlink.c:652:7: warning: 'err' 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:1522:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/mac80211/mlme.c:1479:6: note: 'pwr_level_cisco' 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/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/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 /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/net/tun.c: In function 'tun_get_user': /kisskb/src/drivers/net/tun.c:1843:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1753:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] INFO: Uncompressed kernel (size 0xa9514c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa9514c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa9514c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa9514c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa9514c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa9514c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa9514c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa9514c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa9514c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa84a68) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa84a68) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa9514c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) Image Name: Linux-5.0.0-rc1+ Created: Mon Jan 14 19:53:13 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5032652 Bytes = 4914.70 KiB = 4.80 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.0.0-rc1+ Created: Mon Jan 14 19:53:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5064425 Bytes = 4945.73 KiB = 4.83 MiB Load Address: 00b00000 Entry Point: 00b00290 Image Name: Linux-5.0.0-rc1+ Created: Mon Jan 14 19:53:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5063760 Bytes = 4945.08 KiB = 4.83 MiB Load Address: 00b00000 Entry Point: 00b00290 Image Name: Linux-5.0.0-rc1+ Created: Mon Jan 14 19:53:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5064448 Bytes = 4945.75 KiB = 4.83 MiB Load Address: 00b00000 Entry Point: 00b00290 Image Name: Linux-5.0.0-rc1+ Created: Mon Jan 14 19:53:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5065072 Bytes = 4946.36 KiB = 4.83 MiB Load Address: 00b00000 Entry Point: 00b00888 Image Name: Linux-5.0.0-rc1+ Created: Mon Jan 14 19:53:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5064912 Bytes = 4946.20 KiB = 4.83 MiB Load Address: 00b00000 Entry Point: 00b00290 Image Name: Linux-5.0.0-rc1+ Created: Mon Jan 14 19:53:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5065209 Bytes = 4946.49 KiB = 4.83 MiB Load Address: 00b00000 Entry Point: 00b00888 Image Name: Linux-5.0.0-rc1+ Created: Mon Jan 14 19:53:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5063983 Bytes = 4945.30 KiB = 4.83 MiB Load Address: 00b00000 Entry Point: 00b00290 Image Name: Linux-5.0.0-rc1+ Created: Mon Jan 14 19:53:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5064500 Bytes = 4945.80 KiB = 4.83 MiB Load Address: 00b00000 Entry Point: 00b00290 Completed OK # rm -rf /kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc4.6 # Build took: 0:01:39.587008