Buildresult: linus/um-defconfig/um-x86_64-gcc12 built on Dec 17, 07:30

kisskb

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Status:	OK
Date/Time:	Dec 17, 07:30
Duration:	0:00:45.985590
Builder:	ka7
Revision:	Merge tag 'trace-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace (`3b8a9b2e6809d281890dd0a1102dc14d2cd11caf)`
Target:	linus/um-defconfig/um-x86_64-gcc12
Branch:	linus
Compiler:	um-x86_64-gcc12 (x86_64-linux-gcc.br_real (Buildroot 2021.11-4428-g6b6741b) 12.2.0 / GNU ld (GNU Binutils) 2.39)
Config:	defconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify 3b8a9b2e6809d281890dd0a1102dc14d2cd11caf^{commit} 3b8a9b2e6809d281890dd0a1102dc14d2cd11caf already have revision, skipping fetch # git checkout -q -f -B kisskb 3b8a9b2e6809d281890dd0a1102dc14d2cd11caf # git clean -qxdf # < git log -1 # commit 3b8a9b2e6809d281890dd0a1102dc14d2cd11caf # Merge: c8e97fc6b4c0 712292308af2 # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Sat Dec 16 10:40:51 2023 -0800 # # Merge tag 'trace-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace # # Pull tracing fixes from Steven Rostedt: # # - Fix eventfs to check creating new files for events with names greater # than NAME_MAX. The eventfs lookup needs to check the return result of # simple_lookup(). # # - Fix the ring buffer to check the proper max data size. Events must be # able to fit on the ring buffer sub-buffer, if it cannot, then it # fails to be written and the logic to add the event is avoided. The # code to check if an event can fit failed to add the possible absolute # timestamp which may make the event not be able to fit. This causes # the ring buffer to go into an infinite loop trying to find a # sub-buffer that would fit the event. Luckily, there's a check that # will bail out if it looped over a 1000 times and it also warns. # # The real fix is not to add the absolute timestamp to an event that is # starting at the beginning of a sub-buffer because it uses the # sub-buffer timestamp. # # By avoiding the timestamp at the start of the sub-buffer allows # events that pass the first check to always find a sub-buffer that it # can fit on. # # - Have large events that do not fit on a trace_seq to print "LINE TOO # BIG" like it does for the trace_pipe instead of what it does now # which is to silently drop the output. # # - Fix a memory leak of forgetting to free the spare page that is saved # by a trace instance. # # - Update the size of the snapshot buffer when the main buffer is # updated if the snapshot buffer is allocated. # # - Fix ring buffer timestamp logic by removing all the places that tried # to put the before_stamp back to the write stamp so that the next # event doesn't add an absolute timestamp. But each of these updates # added a race where by making the two timestamp equal, it was # validating the write_stamp so that it can be incorrectly used for # calculating the delta of an event. # # - There's a temp buffer used for printing the event that was using the # event data size for allocation when it needed to use the size of the # entire event (meta-data and payload data) # # - For hardening, use "%.s" for printing the trace_marker output, to # limit the amount that is printed by the size of the event. This was # discovered by development that added a bug that truncated the '\0' # and caused a crash. # # - Fix a use-after-free bug in the use of the histogram files when an # instance is being removed. # # - Remove a useless update in the rb_try_to_discard of the write_stamp. # The before_stamp was already changed to force the next event to add # an absolute timestamp that the write_stamp is not used. But the # write_stamp is modified again using an unneeded 64-bit cmpxchg. # # - Fix several races in the 32-bit implementation of the # rb_time_cmpxchg() that does a 64-bit cmpxchg. # # - While looking at fixing the 64-bit cmpxchg, I noticed that because # the ring buffer uses normal cmpxchg, and this can be done in NMI # context, there's some architectures that do not have a working # cmpxchg in NMI context. For these architectures, fail recording # events that happen in NMI context. # # tag 'trace-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: # ring-buffer: Do not record in NMI if the arch does not support cmpxchg in NMI # ring-buffer: Have rb_time_cmpxchg() set the msb counter too # ring-buffer: Fix 32-bit rb_time_read() race with rb_time_cmpxchg() # ring-buffer: Fix a race in rb_time_cmpxchg() for 32 bit archs # ring-buffer: Remove useless update to write_stamp in rb_try_to_discard() # ring-buffer: Do not try to put back write_stamp # tracing: Fix uaf issue when open the hist or hist_debug file # tracing: Add size check when printing trace_marker output # ring-buffer: Have saved event hold the entire event # ring-buffer: Do not update before stamp when switching sub-buffers # tracing: Update snapshot buffer on resize if it is allocated # ring-buffer: Fix memory leak of free page # eventfs: Fix events beyond NAME_MAX blocking tasks # tracing: Have large events show up as '[LINE TOO BIG]' instead of nothing # ring-buffer: Fix writing to the buffer with max_data_size # < /opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 3b8a9b2e6809d281890dd0a1102dc14d2cd11caf # make -s -j 32 ARCH=um O=/kisskb/build/linus_defconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 defconfig # < make -s -j 32 ARCH=um O=/kisskb/build/linus_defconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 help # make -s -j 32 ARCH=um O=/kisskb/build/linus_defconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig # make -s -j 32 ARCH=um O=/kisskb/build/linus_defconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 LINK linux Completed OK # rm -rf /kisskb/build/linus_defconfig_um-x86_64-gcc12 # Build took: 0:00:45.985590

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