Buildresult: linus/sun3_defconfig/m68k-gcc8 built on Dec 20, 08:38

kisskb

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Status:	OK
Date/Time:	Dec 20, 08:38
Duration:	0:01:37.632142
Builder:	alpine2
Revision:	Merge tag 'trace-v6.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace (`55cb5f43689d7a9ea5bf35ef050f12334f197347)`
Target:	linus/sun3_defconfig/m68k-gcc8
Branch:	linus
Compiler:	m68k-gcc8 (m68k-linux-gcc (GCC) 8.5.0 / GNU ld (GNU Binutils) 2.36.1)
Config:	sun3_defconfig (download)
Log:	Download original Possible warnings (1) drivers/net/ethernet/i825xx/sun3_82586.c:990:108: warning: array subscript 1 is above array bounds of 'volatile struct transmit_cmd_struct [1]' [-Warray-bounds] Full Log # git rev-parse -q --verify 55cb5f43689d7a9ea5bf35ef050f12334f197347^{commit} 55cb5f43689d7a9ea5bf35ef050f12334f197347 already have revision, skipping fetch # git checkout -q -f -B kisskb 55cb5f43689d7a9ea5bf35ef050f12334f197347 # git clean -qxdf # < git log -1 # commit 55cb5f43689d7a9ea5bf35ef050f12334f197347 # Merge: 9c749e61a110 b803d7c664d5 # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Tue Dec 19 12:25:43 2023 -0800 # # Merge tag 'trace-v6.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace # # Pull tracing fix from Steven Rostedt: # "While working on the ring buffer, I found one more bug with the # timestamp code, and the fix for this removed the need for the final # 64-bit cmpxchg! # # The ring buffer events hold a "delta" from the previous event. If it # is determined that the delta can not be calculated, it falls back to # adding an absolute timestamp value. The way to know if the delta can # be used is via two stored timestamps in the per-cpu buffer meta data: # # before_stamp and write_stamp # # The before_stamp is written by every event before it tries to allocate # its space on the ring buffer. The write_stamp is written after it # allocates its space and knows that nothing came in after it read the # previous before_stamp and write_stamp and the two matched. # # A previous fix dd9394257078 ("ring-buffer: Do not try to put back # write_stamp") removed putting back the write_stamp to match the # before_stamp so that the next event could use the delta, but races # were found where the two would match, but not be for of the previous # event. # # It was determined to allow the event reservation to not have a valid # write_stamp when it is finished, and this fixed a lot of races. # # The last use of the 64-bit timestamp cmpxchg depended on the # write_stamp being valid after an interruption. But this is no longer # the case, as if an event is interrupted by a softirq that writes an # event, and that event gets interrupted by a hardirq or NMI and that # writes an event, then the softirq could finish its reservation without # a valid write_stamp. # # In the slow path of the event reservation, a delta can still be used # if the write_stamp is valid. Instead of using a cmpxchg against the # write stamp, the before_stamp needs to be read again to validate the # write_stamp. The cmpxchg is not needed. # # This updates the slowpath to validate the write_stamp by comparing it # to the before_stamp and removes all rb_time_cmpxchg() as there are no # more users of that function. # # The removal of the 32-bit updates of rb_time_t will be done in the # next merge window" # # tag 'trace-v6.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: # ring-buffer: Fix slowpath of interrupted event # < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux-ld --version # < git log --format=%s --max-count=1 55cb5f43689d7a9ea5bf35ef050f12334f197347 # make -s -j 160 ARCH=m68k O=/kisskb/build/linus_sun3_defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux- sun3_defconfig # < make -s -j 160 ARCH=m68k O=/kisskb/build/linus_sun3_defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux- help # make -s -j 160 ARCH=m68k O=/kisskb/build/linus_sun3_defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux- olddefconfig # make -s -j 160 ARCH=m68k O=/kisskb/build/linus_sun3_defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux- In file included from /kisskb/src/include/linux/swab.h:5, from /kisskb/src/include/uapi/linux/byteorder/big_endian.h:14, from /kisskb/src/include/linux/byteorder/big_endian.h:5, from /kisskb/src/arch/m68k/include/uapi/asm/byteorder.h:5, from /kisskb/src/include/asm-generic/bitops/le.h:6, from /kisskb/src/arch/m68k/include/asm/bitops.h:566, from /kisskb/src/include/linux/bitops.h:68, from /kisskb/src/include/linux/kernel.h:23, from /kisskb/src/drivers/net/ethernet/i825xx/sun3_82586.c:32: /kisskb/src/drivers/net/ethernet/i825xx/sun3_82586.c: In function 'sun3_82586_timeout': /kisskb/src/drivers/net/ethernet/i825xx/sun3_82586.c:990:108: warning: array subscript 1 is above array bounds of 'volatile struct transmit_cmd_struct *[1]' [-Warray-bounds] printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status)); ~~~~~~~~~~~~^~~ /kisskb/src/include/uapi/linux/swab.h:107:12: note: in definition of macro '__swab16' __fswab16(x)) ^ /kisskb/src/include/linux/printk.h:455:26: note: in expansion of macro 'printk_index_wrap' #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__) ^~~~~~~~~~~~~~~~~ /kisskb/src/drivers/net/ethernet/i825xx/sun3_82586.c:990:3: note: in expansion of macro 'printk' printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status)); ^~~~~~ Completed OK # rm -rf /kisskb/build/linus_sun3_defconfig_m68k-gcc8 # Build took: 0:01:37.632142

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