lwn.git/kernel, branch v4.20-rc2

Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-11-11T22:37:41+00:00

Pull timer fix from Thomas Gleixner: "Just the removal of a redundant call into the sched deadline overrun check" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: posix-cpu-timers: Remove useless call to check_dl_overrun()

Merge branch 'sched/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-11-11T22:33:00+00:00

Pull scheduler fixes from Thomas Gleixner: "Two small scheduler fixes: - Take hotplug lock in sched_init_smp(). Technically not really required, but lockdep will complain other. - Trivial comment fix in sched/fair" * 'sched/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Fix a comment in task_numa_fault() sched/core: Take the hotplug lock in sched_init_smp()

Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-11-11T22:14:05+00:00

Pull core fixes from Thomas Gleixner: "A couple of fixlets for the core: - Kernel doc function documentation fixes - Missing prototypes for weak watchdog functions" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: resource/docs: Complete kernel-doc style function documentation watchdog/core: Add missing prototypes for weak functions resource/docs: Fix new kernel-doc warnings

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2018-11-10T19:27:58+00:00

Pull namespace fixes from Eric Biederman: "I believe all of these are simple obviously correct bug fixes. These fall into two groups: - Fixing the implementation of MNT_LOCKED which prevents lesser privileged users from seeing unders mounts created by more privileged users. - Fixing the extended uid and group mapping in user namespaces. As well as ensuring the code looks correct I have spot tested these changes as well and in my testing the fixes are working" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: mount: Prevent MNT_DETACH from disconnecting locked mounts mount: Don't allow copying MNT_UNBINDABLE|MNT_LOCKED mounts mount: Retest MNT_LOCKED in do_umount userns: also map extents in the reverse map to kernel IDs

posix-cpu-timers: Remove useless call to check_dl_overrun()

2018-11-08T06:43:35+00:00

check_dl_overrun() is used to send a SIGXCPU to users that asked to be informed when a SCHED_DEADLINE runtime overruns occur. The function is called by check_thread_timers() already, so the call in check_process_timers() is redundant/wrong (even though harmless). Remove it. Fixes: 34be39305a77 ("sched/deadline: Implement "runtime overrun signal" support") Signed-off-by: Juri Lelli Signed-off-by: Thomas Gleixner Reviewed-by: Daniel Bristot de Oliveira Reviewed-by: Steven Rostedt (VMware) Cc: linux-rt-users@vger.kernel.org Cc: mtk.manpages@gmail.com Cc: Mathieu Poirier Cc: Peter Zijlstra Cc: Luca Abeni Cc: Claudio Scordino Link: https://lkml.kernel.org/r/20181107111032.32291-1-juri.lelli@redhat.com

userns: also map extents in the reverse map to kernel IDs

2018-11-08T05:51:16+00:00

The current logic first clones the extent array and sorts both copies, then maps the lower IDs of the forward mapping into the lower namespace, but doesn't map the lower IDs of the reverse mapping. This means that code in a nested user namespace with >5 extents will see incorrect IDs. It also breaks some access checks, like inode_owner_or_capable() and privileged_wrt_inode_uidgid(), so a process can incorrectly appear to be capable relative to an inode. To fix it, we have to make sure that the "lower_first" members of extents in both arrays are translated; and we have to make sure that the reverse map is sorted *after* the translation (since otherwise the translation can break the sorting). This is CVE-2018-18955. Fixes: 6397fac4915a ("userns: bump idmap limits to 340") Cc: stable@vger.kernel.org Signed-off-by: Jann Horn Tested-by: Eric W. Biederman Reviewed-by: Eric W. Biederman Signed-off-by: Eric W. Biederman

resource/docs: Complete kernel-doc style function documentation

2018-11-07T15:47:47+00:00

Add the missing kernel-doc style function parameters documentation. Signed-off-by: Borislav Petkov Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: akpm@linux-foundation.org Cc: linux-tip-commits@vger.kernel.org Cc: rdunlap@infradead.org Fixes: b69c2e20f6e4 ("resource: Clean it up a bit") Link: http://lkml.kernel.org/r/20181105093307.GA12445@zn.tnic Signed-off-by: Ingo Molnar

Merge tag 'trace-v4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2018-11-06T16:12:10+00:00

Pull tracing fix from Steven Rostedt: "Masami found a slight bug in his code where he transposed the arguments of a call to strpbrk. The reason this wasn't detected in our tests is that the only way this would transpire is when a kprobe event with a symbol offset is attached to a function that belongs to a module that isn't loaded yet. When the kprobe trace event is added, the offset would be truncated after it was parsed, and when the module is loaded, it would use the symbol without the offset (as the nul character added by the parsing would not be replaced with the original character)" * tag 'trace-v4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing/kprobes: Fix strpbrk() argument order

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2018-11-06T15:44:04+00:00

Pull networking fixes from David Miller: 1) Handle errors mid-stream of an all dump, from Alexey Kodanev. 2) Fix build of openvswitch with certain combinations of netfilter options, from Arnd Bergmann. 3) Fix interactions between GSO and BQL, from Eric Dumazet. 4) Don't put a '/' in RTL8201F's sysfs file name, from Holger Hoffstätte. 5) S390 qeth driver fixes from Julian Wiedmann. 6) Allow ipv6 link local addresses for netconsole when both source and destination are link local, from Matwey V. Kornilov. 7) Fix the BPF program address seen in /proc/kallsyms, from Song Liu. 8) Initialize mutex before use in dsa microchip driver, from Tristram Ha. 9) Out-of-bounds access in hns3, from Yunsheng Lin. 10) Various netfilter fixes from Stefano Brivio, Jozsef Kadlecsik, Jiri Slaby, Florian Westphal, Eric Westbrook, Andrey Ryabinin, and Pablo Neira Ayuso. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (50 commits) net: alx: make alx_drv_name static net: bpfilter: fix iptables failure if bpfilter_umh is disabled sock_diag: fix autoloading of the raw_diag module net: core: netpoll: Enable netconsole IPv6 link local address ipv6: properly check return value in inet6_dump_all() rtnetlink: restore handling of dumpit return value in rtnl_dump_all() net/ipv6: Move anycast init/cleanup functions out of CONFIG_PROC_FS bonding/802.3ad: fix link_failure_count tracking net: phy: realtek: fix RTL8201F sysfs name sctp: define SCTP_SS_DEFAULT for Stream schedulers sctp: fix strchange_flags name for Stream Change Event mlxsw: spectrum: Fix IP2ME CPU policer configuration openvswitch: fix linking without CONFIG_NF_CONNTRACK_LABELS qed: fix link config error handling net: hns3: Fix for out-of-bounds access when setting pfc back pressure net/mlx4_en: use __netdev_tx_sent_queue() net: do not abort bulk send on BQL status net: bql: add __netdev_tx_sent_queue() s390/qeth: report 25Gbit link speed s390/qeth: sanitize ARP requests ...

tracing/kprobes: Fix strpbrk() argument order

2018-11-05T14:47:14+00:00

Fix strpbrk()'s argument order, it must pass acceptable string in 2nd argument. Note that this can cause a kernel panic where it recovers backup character to code->data. Link: http://lkml.kernel.org/r/154108256792.2604.1816052586385217811.stgit@devbox Fixes: a6682814f371 ("tracing/kprobes: Allow kprobe-events to record module symbol") Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware)