This imports the proposed patch series [2] for the critical locking synchronization bug recently found in musl [1].
As [3] recommends, this is done in 2 steps: The first patch contains only the bugfix itself, which should be safe to backport to 19.07 and older right away. Note that the issue doesn't seem to hit older OpenWrt releases in practice - it was discovered due to frequent crashes of fastd in Gluon since we updated to OpenWrt 19.07 - so a new 18.06.x release seems not as urgent as 19.07.x. The second patch contains the rest of the patch series, which is: - a fix for a related, but less critical bug - a small optimization related to the fixes - a fixed version of the lock-skipping to restore a potential performance regression caused by the first patch for programs that are singlethreaded most of the time. I propose to apply the full series to OpenWrt master, as there are no obvious issues, and the performance regression fix can get better testing this way. I have also pushed this to my staging tree [4]. [1] https://www.openwall.com/lists/musl/2020/05/22/3 [2] https://www.openwall.com/lists/musl/2020/05/22/10 [3] https://twitter.com/musllibc/status/1263955586540089344 [4] https://git.openwrt.org/?p=openwrt/staging/neoraider.git;a=summary Matthias Schiffer (2): musl: fix locking synchronization bug musl: restore lock skipping for mostly-singlethreaded programs, and related patches ...ist-unlink-in-pthread_exit-after-all.patch | 51 +++++++++++ ...hreads_minus_1-as-relaxed-atomic-for.patch | 69 ++++++++++++++ ...own-size-of-some-libc-struct-members.patch | 25 ++++++ ...pping-for-processes-that-return-to-s.patch | 90 +++++++++++++++++++ 4 files changed, 235 insertions(+) create mode 100644 toolchain/musl/patches/500-0001-reorder-thread-list-unlink-in-pthread_exit-after-all.patch create mode 100644 toolchain/musl/patches/500-0002-don-t-use-libc.threads_minus_1-as-relaxed-atomic-for.patch create mode 100644 toolchain/musl/patches/500-0003-cut-down-size-of-some-libc-struct-members.patch create mode 100644 toolchain/musl/patches/500-0004-restore-lock-skipping-for-processes-that-return-to-s.patch -- 2.26.2 _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
