Buildresult: powerpc-fixes/pmac32_defconfig+kexec/powerpc-gcc4.6 built on Feb 7 2020, 23:56

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Status:	Failed
Date/Time:	Feb 7 2020, 23:56
Duration:	0:01:16.714190
Builder:	ka3
Revision:	powerpc/futex: Fix incorrect user access blocking (`8cb55a3daebd4b38330b706117e1c8203ffaf3f5)`
Target:	powerpc-fixes/pmac32_defconfig+kexec/powerpc-gcc4.6
Branch:	powerpc-fixes
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	pmac32_defconfig+kexec (download)
Log:	Download original Possible errors drivers/gpu/drm/drm_edid.c:3275:2: error: call to '__compiletime_assert_3282' declared with attribute error: BUILD_BUG_ON failed: cea_mode_for_vic(8)->vtotal != 262 \|\| cea_mode_for_vic(9)->vtotal != 262 \|\| cea_mode_for_vic(12)->vtotal != 262 \|\| cea_mode_for_vic(13)->vtotal != 262 \|\| cea_mode_for_vic(23)->vtotal != 312 \|\| cea_mode_for_vic(24)->vtotal != 312 \|\| cea_mode_for_vic(27)->vtotal != 312 \|\| cea_mode_for_vic(28)->vtotal != 312 make[4]: * [scripts/Makefile.build:266: drivers/gpu/drm/drm_edid.o] Error 1 make[3]: * [scripts/Makefile.build:503: drivers/gpu/drm] Error 2 make[2]: * [scripts/Makefile.build:503: drivers/gpu] Error 2 make[1]: * [Makefile:1681: drivers] Error 2 make: * [Makefile:179: sub-make] Error 2 Possible warnings (16) include/linux/list.h:72:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] fs/ext4/extents.c:5009:23: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] kernel/trace/trace_events.c:2039:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/tty/serial/8250/8250_core.c:248:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] fs/nfsd/nfs4xdr.c:2076:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized] fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1836:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1749:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] fs/io_uring.c:5713:13: warning: 'err' may be used uninitialized in this function [-Wuninitialized] include/sound/control.h:218:2: warning: 'speaker_vol' may be used uninitialized in this function [-Wuninitialized] drivers/usb/core/devio.c:625:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized] drivers/net/wireless/broadcom/b43/phy_n.c:190:21: warning: 'val_addr' may be used uninitialized in this function [-Wuninitialized] drivers/gpu/drm/drm_dp_mst_topology.c:5399:9: warning: missing braces around initializer [-Wmissing-braces] drivers/gpu/drm/drm_dp_mst_topology.c:5399:9: warning: (near initialization for 'desc.ident') [-Wmissing-braces] net/mac80211/mlme.c:1576:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify 8cb55a3daebd4b38330b706117e1c8203ffaf3f5^{commit} 8cb55a3daebd4b38330b706117e1c8203ffaf3f5 already have revision, skipping fetch # git checkout -q -f -B kisskb 8cb55a3daebd4b38330b706117e1c8203ffaf3f5 # git clean -qxdf # < git log -1 # commit 8cb55a3daebd4b38330b706117e1c8203ffaf3f5 # Author: Michael Ellerman <mpe@ellerman.id.au> # Date: Fri Feb 7 22:15:46 2020 +1100 # # powerpc/futex: Fix incorrect user access blocking # # The early versions of our kernel user access prevention (KUAP) were # written by Russell and Christophe, and didn't have separate # read/write access. # # At some point I picked up the series and added the read/write access, # but I failed to update the usages in futex.h to correctly allow read # and write. # # However we didn't notice because of another bug which was causing the # low-level code to always enable read and write. That bug was fixed # recently in commit 1d8f739b07bd ("powerpc/kuap: Fix set direction in # allow/prevent_user_access()"). # # futex_atomic_cmpxchg_inatomic() is passed the user address as %3 and # does: # # 1: lwarx %1, 0, %3 # cmpw 0, %1, %4 # bne- 3f # 2: stwcx. %5, 0, %3 # # Which clearly loads and stores from/to %3. The logic in # arch_futex_atomic_op_inuser() is similar, so fix both of them to use # allow_read_write_user(). # # Without this fix, and with PPC_KUAP_DEBUG=y, we see eg: # # Bug: Read fault blocked by AMR! # WARNING: CPU: 94 PID: 149215 at arch/powerpc/include/asm/book3s/64/kup-radix.h:126 __do_page_fault+0x600/0xf30 # CPU: 94 PID: 149215 Comm: futex_requeue_p Tainted: G W 5.5.0-rc7-gcc9x-g4c25df5640ae #1 # ... # NIP [c000000000070680] __do_page_fault+0x600/0xf30 # LR [c00000000007067c] __do_page_fault+0x5fc/0xf30 # Call Trace: # [c00020138e5637e0] [c00000000007067c] __do_page_fault+0x5fc/0xf30 (unreliable) # [c00020138e5638c0] [c00000000000ada8] handle_page_fault+0x10/0x30 # --- interrupt: 301 at cmpxchg_futex_value_locked+0x68/0xd0 # LR = futex_lock_pi_atomic+0xe0/0x1f0 # [c00020138e563bc0] [c000000000217b50] futex_lock_pi_atomic+0x80/0x1f0 (unreliable) # [c00020138e563c30] [c00000000021b668] futex_requeue+0x438/0xb60 # [c00020138e563d60] [c00000000021c6cc] do_futex+0x1ec/0x2b0 # [c00020138e563d90] [c00000000021c8b8] sys_futex+0x128/0x200 # [c00020138e563e20] [c00000000000b7ac] system_call+0x5c/0x68 # # Fixes: de78a9c42a79 ("powerpc: Add a framework for Kernel Userspace Access Protection") # Cc: stable@vger.kernel.org # v5.2+ # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20200207122145.11928-1-mpe@ellerman.id.au # < /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 8cb55a3daebd4b38330b706117e1c8203ffaf3f5 # < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pmac32_defconfig+kexec_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- pmac32_defconfig # Added to kconfig configs/2006/11/29/pmac32_defconfigkexec # yes \n \| make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pmac32_defconfig+kexec_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- oldconfig yes: standard output: Broken pipe # make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pmac32_defconfig+kexec_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:72:12: 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/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/fs/ext4/extents.c: In function 'ext4_convert_unwritten_io_end_vec': /kisskb/src/fs/ext4/extents.c:5009:23: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/trace/trace_events.c: In function 'event_create_dir': /kisskb/src/kernel/trace/trace_events.c:2039:6: 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: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/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/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: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] /kisskb/src/fs/io_uring.c: In function '__io_sqe_files_update.isra.82': /kisskb/src/fs/io_uring.c:5713:13: warning: 'err' 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:218:2: 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/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/drivers/net/wireless/broadcom/b43/phy_n.c: In function 'b43_nphy_rf_ctl_override_rev7': /kisskb/src/drivers/net/wireless/broadcom/b43/phy_n.c:190:21: warning: 'val_addr' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c: In function 'drm_dp_mst_dsc_aux_for_port': /kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c:5399:9: warning: missing braces around initializer [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c:5399:9: warning: (near initialization for 'desc.ident') [-Wmissing-braces] /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/gpu/drm/drm_edid.c: In function 'cea_mode_alternate_timings': /kisskb/src/drivers/gpu/drm/drm_edid.c:3275:2: error: call to '__compiletime_assert_3282' declared with attribute error: BUILD_BUG_ON failed: cea_mode_for_vic(8)->vtotal != 262 \|\| cea_mode_for_vic(9)->vtotal != 262 \|\| cea_mode_for_vic(12)->vtotal != 262 \|\| cea_mode_for_vic(13)->vtotal != 262 \|\| cea_mode_for_vic(23)->vtotal != 312 \|\| cea_mode_for_vic(24)->vtotal != 312 \|\| cea_mode_for_vic(27)->vtotal != 312 \|\| cea_mode_for_vic(28)->vtotal != 312 /kisskb/src/drivers/gpu/drm/drm_edid.c:3997: confused by earlier errors, bailing out make[4]: * [/kisskb/src/scripts/Makefile.build:266: drivers/gpu/drm/drm_edid.o] Error 1 make[4]: * Waiting for unfinished jobs.... make[3]: * [/kisskb/src/scripts/Makefile.build:503: drivers/gpu/drm] Error 2 make[2]: * [/kisskb/src/scripts/Makefile.build:503: drivers/gpu] Error 2 make[1]: * [/kisskb/src/Makefile:1681: drivers] Error 2 make: *** [Makefile:179: sub-make] Error 2 Command 'make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pmac32_defconfig+kexec_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/powerpc-fixes_pmac32_defconfig+kexec_powerpc-gcc4.6 # Build took: 0:01:16.714190

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