Buildresult: powerpc-fixes/m68k-defconfig/m68k-gcc8 built on Jul 20 2019, 00:32

kisskb

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Status:	OK
Date/Time:	Jul 20 2019, 00:32
Duration:	0:01:34.661122
Builder:	ka3
Revision:	powerpc/tm: Fix oops on sigreturn on systems without TM (`c7ce5fe9288c5692fa456a804cf5ea5976d842f1)`
Target:	powerpc-fixes/m68k-defconfig/m68k-gcc8
Branch:	powerpc-fixes
Compiler:	m68k-gcc8 (m68k-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	defconfig (download)
Log:	Download original Possible warnings (36) <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] arch/m68k/mvme147/config.c:175:2: warning: #warning check me! [-Wcpp] arch/m68k/mvme16x/config.c:440:2: warning: #warning check me! [-Wcpp] kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] ipc/shm.c:1712:59: warning: 'file' may be used uninitialized in this function [-Wuninitialized] kernel/acct.c:177:2: warning: value computed is not used [-Wunused-value] net/core/gen_stats.c:157:19: warning: 'seq' may be used uninitialized in this function [-Wuninitialized] lib/mpi/mpicoder.c:336:12: warning: 'buff' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] fs/ocfs2/alloc.c:7590:17: warning: 'first_bit' may be used uninitialized in this function [-Wuninitialized] fs/ocfs2/file.c:2372:3: warning: value computed is not used [-Wunused-value] net/core/dev.c:3407:15: warning: 'tail' may be used uninitialized in this function [-Wuninitialized] net/core/filter.c:3599:4: warning: value computed is not used [-Wunused-value] fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] drivers/md/raid10.c:840:22: warning: 'best_pending_slot' may be used uninitialized in this function [-Wuninitialized] fs/cifs/smb2pdu.c:2581:19: warning: 'in_data_buf' may be used uninitialized in this function [-Wuninitialized] include/net/sock.h:1960:19: warning: 'sk' may be used uninitialized in this function [-Wuninitialized] include/linux/rhashtable.h:110:10: warning: 'next' may be used uninitialized in this function [-Wuninitialized] drivers/net/ethernet/8390/lib8390.c:201:12: warning: '__ei_open' defined but not used [-Wunused-function] drivers/net/ethernet/8390/lib8390.c:230:12: warning: '__ei_close' defined but not used [-Wunused-function] drivers/net/ethernet/8390/lib8390.c:254:13: warning: '__ei_tx_timeout' defined but not used [-Wunused-function] drivers/net/ethernet/8390/lib8390.c:300:20: warning: '__ei_start_xmit' defined but not used [-Wunused-function] drivers/net/ethernet/8390/lib8390.c:509:13: warning: '__ei_poll' defined but not used [-Wunused-function] drivers/net/ethernet/8390/lib8390.c:850:33: warning: '__ei_get_stats' defined but not used [-Wunused-function] drivers/net/ethernet/8390/lib8390.c:950:13: warning: '__ei_set_multicast_list' defined but not used [-Wunused-function] drivers/net/ethernet/8390/lib8390.c:988:27: warning: '____alloc_ei_netdev' defined but not used [-Wunused-function] drivers/net/macsec.c:1918:2: warning: 'assoc_num' may be used uninitialized in this function [-Wuninitialized] drivers/net/macsec.c:1918:2: warning: 'rx_sc' may be used uninitialized in this function [-Wuninitialized] drivers/net/macsec.c:1995:2: warning: 'assoc_num' may be used uninitialized in this function [-Wuninitialized] drivers/net/macsec.c:1995:2: warning: 'tx_sc' may be used uninitialized in this function [-Wuninitialized] drivers/net/macsec.c:2060:5: warning: 'assoc_num' may be used uninitialized in this function [-Wuninitialized] drivers/net/macsec.c:2060:24: warning: 'tx_sc' may be used uninitialized in this function [-Wuninitialized] drivers/net/macsec.c:2061:21: warning: 'secy' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1831:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1524:31: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] fs/posix_acl.c:148:3: warning: value computed is not used [-Wunused-value] Full Log # git rev-parse -q --verify c7ce5fe9288c5692fa456a804cf5ea5976d842f1^{commit} # git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test # git rev-parse -q --verify c7ce5fe9288c5692fa456a804cf5ea5976d842f1^{commit} c7ce5fe9288c5692fa456a804cf5ea5976d842f1 # git checkout -q -f -B kisskb c7ce5fe9288c5692fa456a804cf5ea5976d842f1 # git clean -qxdf # < git log -1 # commit c7ce5fe9288c5692fa456a804cf5ea5976d842f1 # Author: Michael Neuling <mikey@neuling.org> # Date: Fri Jul 19 15:05:02 2019 +1000 # # powerpc/tm: Fix oops on sigreturn on systems without TM # # On systems like P9 powernv where we have no TM (or P8 booted with # ppc_tm=off), userspace can construct a signal context which still has # the MSR TS bits set. The kernel tries to restore this context which # results in the following crash: # # Unexpected TM Bad Thing exception at c0000000000022fc (msr 0x8000000102a03031) tm_scratch=800000020280f033 # Oops: Unrecoverable exception, sig: 6 [#1] # LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries # Modules linked in: # CPU: 0 PID: 1636 Comm: sigfuz Not tainted 5.2.0-11043-g0a8ad0ffa4 #69 # NIP: c0000000000022fc LR: 00007fffb2d67e48 CTR: 0000000000000000 # REGS: c00000003fffbd70 TRAP: 0700 Not tainted (5.2.0-11045-g7142b497d8) # MSR: 8000000102a03031 <SF,VEC,VSX,FP,ME,IR,DR,LE,TM[E]> CR: 42004242 XER: 00000000 # CFAR: c0000000000022e0 IRQMASK: 0 # GPR00: 0000000000000072 00007fffb2b6e560 00007fffb2d87f00 0000000000000669 # GPR04: 00007fffb2b6e728 0000000000000000 0000000000000000 00007fffb2b6f2a8 # GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 # GPR12: 0000000000000000 00007fffb2b76900 0000000000000000 0000000000000000 # GPR16: 00007fffb2370000 00007fffb2d84390 00007fffea3a15ac 000001000a250420 # GPR20: 00007fffb2b6f260 0000000010001770 0000000000000000 0000000000000000 # GPR24: 00007fffb2d843a0 00007fffea3a14a0 0000000000010000 0000000000800000 # GPR28: 00007fffea3a14d8 00000000003d0f00 0000000000000000 00007fffb2b6e728 # NIP [c0000000000022fc] rfi_flush_fallback+0x7c/0x80 # LR [00007fffb2d67e48] 0x7fffb2d67e48 # Call Trace: # Instruction dump: # e96a0220 e96a02a8 e96a0330 e96a03b8 394a0400 4200ffdc 7d2903a6 e92d0c00 # e94d0c08 e96d0c10 e82d0c18 7db242a6 <4c000024> 7db243a6 7db142a6 f82d0c18 # # The problem is the signal code assumes TM is enabled when # CONFIG_PPC_TRANSACTIONAL_MEM is enabled. This may not be the case as # with P9 powernv or if `ppc_tm=off` is used on P8. # # This means any local user can crash the system. # # Fix the problem by returning a bad stack frame to the user if they try # to set the MSR TS bits with sigreturn() on systems where TM is not # supported. # # Found with sigfuz kernel selftest on P9. # # This fixes CVE-2019-13648. # # Fixes: 2b0a576d15e0 ("powerpc: Add new transactional memory state to the signal context") # # NOTE: fixes commit 2b0a576d15e0 released in v3.9. # # Consider a stable tag: # # Cc: stable@vger.kernel.org # v3.9+ # Cc: stable@vger.kernel.org # v3.9 # Reported-by: Praveen Pandey <Praveen.Pandey@in.ibm.com> # Signed-off-by: Michael Neuling <mikey@neuling.org> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20190719050502.405-1-mikey@neuling.org # < /opt/cross/kisskb/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux-ld --version # < git log --format=%s --max-count=1 c7ce5fe9288c5692fa456a804cf5ea5976d842f1 # < make -s -j 80 ARCH=m68k O=/kisskb/build/powerpc-fixes_m68k-defconfig_m68k CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux- defconfig # make -s -j 80 ARCH=m68k O=/kisskb/build/powerpc-fixes_m68k-defconfig_m68k CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux- <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] /kisskb/src/arch/m68k/mvme147/config.c: In function 'mvme147_hwclk': /kisskb/src/arch/m68k/mvme147/config.c:175:2: warning: #warning check me! [-Wcpp] /kisskb/src/arch/m68k/mvme16x/config.c: In function 'mvme16x_hwclk': /kisskb/src/arch/m68k/mvme16x/config.c:440:2: warning: #warning check me! [-Wcpp] /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /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/kernel/acct.c: In function 'acct_pin_kill': /kisskb/src/kernel/acct.c:177:2: warning: value computed is not used [-Wunused-value] /kisskb/src/net/core/gen_stats.c: In function '__gnet_stats_copy_basic': /kisskb/src/net/core/gen_stats.c:157:19: warning: 'seq' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/lib/mpi/mpicoder.c: In function 'mpi_read_raw_from_sgl': /kisskb/src/lib/mpi/mpicoder.c:336:12: warning: 'buff' 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:331:21: note: 'pdeo' was declared here /kisskb/src/fs/ocfs2/alloc.c: In function 'ocfs2_trim_mainbm': /kisskb/src/fs/ocfs2/alloc.c:7590:17: warning: 'first_bit' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/ocfs2/file.c: In function 'ocfs2_file_write_iter': /kisskb/src/fs/ocfs2/file.c:2372:3: warning: value computed is not used [-Wunused-value] /kisskb/src/net/core/dev.c: In function 'validate_xmit_skb_list': /kisskb/src/net/core/dev.c:3407:15: warning: 'tail' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/core/filter.c: In function 'bpf_clear_redirect_map': /kisskb/src/net/core/filter.c:3599:4: warning: value computed is not used [-Wunused-value] /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/md/raid10.c: In function 'read_balance': /kisskb/src/drivers/md/raid10.c:840:22: warning: 'best_pending_slot' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/cifs/smb2pdu.c: In function 'SMB2_ioctl_init': /kisskb/src/fs/cifs/smb2pdu.c:2581:19: warning: 'in_data_buf' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/sctp/output.c: In function 'sctp_packet_config': /kisskb/src/include/net/sock.h:1960:19: warning: 'sk' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/sctp/output.c:79:15: note: 'sk' was declared here /kisskb/src/lib/rhashtable.c: In function 'rht_deferred_worker': /kisskb/src/include/linux/rhashtable.h:110:10: warning: 'next' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/lib/rhashtable.c:222:28: note: 'next' was declared here /kisskb/src/drivers/net/ethernet/8390/lib8390.c:201:12: warning: '__ei_open' defined but not used [-Wunused-function] /kisskb/src/drivers/net/ethernet/8390/lib8390.c:230:12: warning: '__ei_close' defined but not used [-Wunused-function] /kisskb/src/drivers/net/ethernet/8390/lib8390.c:254:13: warning: '__ei_tx_timeout' defined but not used [-Wunused-function] /kisskb/src/drivers/net/ethernet/8390/lib8390.c:300:20: warning: '__ei_start_xmit' defined but not used [-Wunused-function] /kisskb/src/drivers/net/ethernet/8390/lib8390.c:509:13: warning: '__ei_poll' defined but not used [-Wunused-function] /kisskb/src/drivers/net/ethernet/8390/lib8390.c:850:33: warning: '__ei_get_stats' defined but not used [-Wunused-function] /kisskb/src/drivers/net/ethernet/8390/lib8390.c:950:13: warning: '__ei_set_multicast_list' defined but not used [-Wunused-function] /kisskb/src/drivers/net/ethernet/8390/lib8390.c:988:27: warning: '____alloc_ei_netdev' defined but not used [-Wunused-function] /kisskb/src/drivers/net/macsec.c: In function 'macsec_del_rxsa': /kisskb/src/drivers/net/macsec.c:1918:2: warning: 'assoc_num' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/macsec.c:1918:2: warning: 'rx_sc' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/macsec.c: In function 'macsec_del_txsa': /kisskb/src/drivers/net/macsec.c:1995:2: warning: 'assoc_num' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/macsec.c:1995:2: warning: 'tx_sc' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/macsec.c: In function 'macsec_upd_txsa': /kisskb/src/drivers/net/macsec.c:2060:5: warning: 'assoc_num' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/macsec.c:2060:24: warning: 'tx_sc' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/macsec.c:2061:21: warning: 'secy' 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:1831:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1524:31: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1744:46: note: 'linear' was declared here /kisskb/src/fs/posix_acl.c: In function 'get_acl': /kisskb/src/fs/posix_acl.c:148:3: warning: value computed is not used [-Wunused-value] Completed OK # rm -rf /kisskb/build/powerpc-fixes_m68k-defconfig_m68k # Build took: 0:01:34.661122

© Michael Ellerman 2006-2018.