Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels

[Mikael Pettersson]

Anatoly Pugachev writes:
 > On Fri, Jul 28, 2017 at 11:45 AM, Mikael Pettersson
 > <mikpelinux@xxxxxxxxx> wrote:
 > > It's an rpmbuild --rebuild of Fedora's strace-4.18-1.fc24.src.rpm, but according to the
 > > build log the following should do it:
 > >
 > > export CFLAGS='-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -grecord-gcc-switches  -m32 -mcpu=ultrasparc'
 > > ./configure --build=sparcv9-unknown-linux-gnu --host=sparcv9-unknown-linux-gnu --program-prefix= --disable-dependency-tracking --prefix=/usr --exec-prefix=/u
 > > sr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib --libexecdir=/usr/libexec --local
 > > statedir=/var --sharedstatedir=/var/lib --mandir=/usr/share/man --infodir=/usr/share/info
 > > make -j2
 > > make -j2 -k check VERBOSE=1
 > 
 > cant' reproduce it here on debian sparc64 LDOM:

DaveM was also unable to reproduce it.

I'll be investigating a possible kernel miscompile next.


 > 
 > used git version of strace ( https://github.com/strace/strace )
 > 
 > strace$ make -j24 check VERBOSE=1
 > ...
 > ============================================================================
 > Testsuite summary for strace 4.18.0.134.805d
 > ============================================================================
 > # TOTAL: 443
 > # PASS:  389
 > # SKIP:  40
 > # XFAIL: 0
 > # FAIL:  14
 > # XPASS: 0
 > # ERROR: 0
 > 
 > 
 > while in kernel logs (journalctl -k -f):
 > 
 > Jul 29 12:49:22 ttip kernel: mmap: remap_file_page (77341) uses
 > deprecated remap_file_pages() syscall. See
 > Documentation/vm/remap_file_pages.txt.
 > Jul 29 12:49:22 ttip kernel: capability: warning: `caps' uses
 > deprecated v2 capabilities in a way that may be insecure
 > Jul 29 12:49:22 ttip kernel: capability: warning: `caps' uses 32-bit
 > capabilities (legacy support in use)
 > Jul 29 12:49:22 ttip kernel: ------------[ cut here ]------------
 > Jul 29 12:49:22 ttip kernel: WARNING: CPU: 18 PID: 78388 at
 > arch/sparc/kernel/sys_sparc32.c:150
 > compat_SyS_sparc_sigaction+0x3c/0x60
 > Jul 29 12:49:22 ttip kernel: Modules linked in: tcp_diag inet_diag
 > xfrm_user xfrm_algo nfnetlink netlink_diag xt_tcpudp xt_multiport
 > xt_conntrack tun iptable_filter iptable_nat nf_conntrack_ipv4
 > nf_defrag_ipv4 nf_nat_ipv4 xfs camellia_sparc64 des_sparc64
 > des_generic aes_sparc64 n2_rng md5_sparc64 rng_core flash
 > sha512_sparc64 sha256_sparc64 sha1_sparc64 nf_nat_pptp
 > nf_nat_proto_gre nf_conntrack_pptp nf_conntrack_proto_gre nf_nat
 > nf_conntrack libcrc32c crc32c_generic ip_tables x_tables autofs4 ext4
 > crc16 mbcache jbd2 crc32c_sparc64
 > Jul 29 12:49:22 ttip kernel: CPU: 18 PID: 78388 Comm: sigaction Not
 > tainted 4.13.0-rc2-00220-g0a07b238e5f4 #376
 > Jul 29 12:49:22 ttip kernel: Call Trace:
 > Jul 29 12:49:22 ttip kernel:  [000000000046c074] __warn+0xb4/0xe0
 > Jul 29 12:49:22 ttip kernel:  [000000000046c120] warn_slowpath_null+0x20/0x40
 > Jul 29 12:49:22 ttip kernel:  [000000000044b7bc]
 > compat_SyS_sparc_sigaction+0x3c/0x60
 > Jul 29 12:49:22 ttip kernel:  [00000000004061d4] linux_sparc_syscall32+0x34/0x60
 > Jul 29 12:49:22 ttip kernel: ---[ end trace 1ad5184278304e6d ]---
 > Jul 29 12:49:25 ttip kernel: pc[83378]: segfault at 70000974 ip
 > 0000000070000974 (rpc 000000007000096c) sp 00000000ffdd9438 error
 > 30001 in pc[70010000+2000]

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