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2019-01-10bpf: fix panic in stack_map_get_build_id() on i386 and arm32Song Liu
As Naresh reported, test_stacktrace_build_id() causes panic on i386 and arm32 systems. This is caused by page_address() returns NULL in certain cases. This patch fixes this error by using kmap_atomic/kunmap_atomic instead of page_address. Fixes: 615755a77b24 (" bpf: extend stackmap to save binary_build_id+offset instead of address") Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-01-10selftests: bpf: install files tcp_(server|client)*.pyAnders Roxell
When test_tcpbpf_user runs it complains that it can't find files tcp_server.py and tcp_client.py. Rework so that tcp_server.py and tcp_client.py gets installed, added them to the variable TEST_PROGS_EXTENDED. Fixes: d6d4f60c3a09 ("bpf: add selftest for tcpbpf") Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-01-10gpio: pl061: handle failed allocationsNicholas Mc Guire
devm_kzalloc(), devm_kstrdup() and devm_kasprintf() all can fail internal allocation and return NULL. Using any of the assigned objects without checking is not safe. As this is early in the boot phase and these allocations really should not fail, any failure here is probably an indication of a more serious issue so it makes little sense to try and rollback the previous allocated resources or try to continue; but rather the probe function is simply exited with -ENOMEM. Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Fixes: 684284b64aae ("ARM: integrator: add MMCI device to IM-PD1") Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2019-01-10samples: bpf: user proper argument indexIoana Ciornei
Use optind as index for argv instead of a hardcoded value. When the program has options this leads to improper parameter handling. Fixes: dc378a1ab5b6 ("samples: bpf: get ifindex from ifname") Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Acked-by: Matteo Croce <mcroce@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-01-10selftests/bpf: add missing executables to .gitignoreStanislav Fomichev
We build test_libbpf with CXX to make sure linking against C++ works. $ make -s -C tools/lib/bpf $ git status -sb ? tools/lib/bpf/test_libbpf $ make -s -C tools/testing/selftests/bpf $ git status -sb ? tools/lib/bpf/test_libbpf ? tools/testing/selftests/bpf/test_libbpf Fixes: 8c4905b995c6 ("libbpf: make sure bpf headers are c++ include-able") Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-01-10ipv6: fix kernel-infoleak in ipv6_local_error()Eric Dumazet
This patch makes sure the flow label in the IPv6 header forged in ipv6_local_error() is initialized. BUG: KMSAN: kernel-infoleak in _copy_to_user+0x16b/0x1f0 lib/usercopy.c:32 CPU: 1 PID: 24675 Comm: syz-executor1 Not tainted 4.20.0-rc7+ #4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x173/0x1d0 lib/dump_stack.c:113 kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:613 kmsan_internal_check_memory+0x455/0xb00 mm/kmsan/kmsan.c:675 kmsan_copy_to_user+0xab/0xc0 mm/kmsan/kmsan_hooks.c:601 _copy_to_user+0x16b/0x1f0 lib/usercopy.c:32 copy_to_user include/linux/uaccess.h:177 [inline] move_addr_to_user+0x2e9/0x4f0 net/socket.c:227 ___sys_recvmsg+0x5d7/0x1140 net/socket.c:2284 __sys_recvmsg net/socket.c:2327 [inline] __do_sys_recvmsg net/socket.c:2337 [inline] __se_sys_recvmsg+0x2fa/0x450 net/socket.c:2334 __x64_sys_recvmsg+0x4a/0x70 net/socket.c:2334 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x457ec9 Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f8750c06c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9 RDX: 0000000000002000 RSI: 0000000020000400 RDI: 0000000000000005 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8750c076d4 R13: 00000000004c4a60 R14: 00000000004d8140 R15: 00000000ffffffff Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:204 [inline] kmsan_save_stack mm/kmsan/kmsan.c:219 [inline] kmsan_internal_chain_origin+0x134/0x230 mm/kmsan/kmsan.c:439 __msan_chain_origin+0x70/0xe0 mm/kmsan/kmsan_instr.c:200 ipv6_recv_error+0x1e3f/0x1eb0 net/ipv6/datagram.c:475 udpv6_recvmsg+0x398/0x2ab0 net/ipv6/udp.c:335 inet_recvmsg+0x4fb/0x600 net/ipv4/af_inet.c:830 sock_recvmsg_nosec net/socket.c:794 [inline] sock_recvmsg+0x1d1/0x230 net/socket.c:801 ___sys_recvmsg+0x4d5/0x1140 net/socket.c:2278 __sys_recvmsg net/socket.c:2327 [inline] __do_sys_recvmsg net/socket.c:2337 [inline] __se_sys_recvmsg+0x2fa/0x450 net/socket.c:2334 __x64_sys_recvmsg+0x4a/0x70 net/socket.c:2334 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:204 [inline] kmsan_internal_poison_shadow+0x92/0x150 mm/kmsan/kmsan.c:158 kmsan_kmalloc+0xa6/0x130 mm/kmsan/kmsan_hooks.c:176 kmsan_slab_alloc+0xe/0x10 mm/kmsan/kmsan_hooks.c:185 slab_post_alloc_hook mm/slab.h:446 [inline] slab_alloc_node mm/slub.c:2759 [inline] __kmalloc_node_track_caller+0xe18/0x1030 mm/slub.c:4383 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0x309/0xa20 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:998 [inline] ipv6_local_error+0x1a7/0x9e0 net/ipv6/datagram.c:334 __ip6_append_data+0x129f/0x4fd0 net/ipv6/ip6_output.c:1311 ip6_make_skb+0x6cc/0xcf0 net/ipv6/ip6_output.c:1775 udpv6_sendmsg+0x3f8e/0x45d0 net/ipv6/udp.c:1384 inet_sendmsg+0x54a/0x720 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg net/socket.c:631 [inline] __sys_sendto+0x8c4/0xac0 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto+0x107/0x130 net/socket.c:1796 __x64_sys_sendto+0x6e/0x90 net/socket.c:1796 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Bytes 4-7 of 28 are uninitialized Memory access of size 28 starts at ffff8881937bfce0 Data copied to user address 0000000020000000 Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10net/core/neighbour: tell kmemleak about hash tablesKonstantin Khlebnikov
This fixes false-positive kmemleak reports about leaked neighbour entries: unreferenced object 0xffff8885c6e4d0a8 (size 1024): comm "softirq", pid 0, jiffies 4294922664 (age 167640.804s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 20 2c f3 83 ff ff ff ff ........ ,...... 08 c0 ef 5f 84 88 ff ff 01 8c 7d 02 01 00 00 00 ..._......}..... backtrace: [<00000000748509fe>] ip6_finish_output2+0x887/0x1e40 [<0000000036d7a0d8>] ip6_output+0x1ba/0x600 [<0000000027ea7dba>] ip6_send_skb+0x92/0x2f0 [<00000000d6e2111d>] udp_v6_send_skb.isra.24+0x680/0x15e0 [<000000000668a8be>] udpv6_sendmsg+0x18c9/0x27a0 [<000000004bd5fa90>] sock_sendmsg+0xb3/0xf0 [<000000008227b29f>] ___sys_sendmsg+0x745/0x8f0 [<000000008698009d>] __sys_sendmsg+0xde/0x170 [<00000000889dacf1>] do_syscall_64+0x9b/0x400 [<0000000081cdb353>] entry_SYSCALL_64_after_hwframe+0x49/0xbe [<000000005767ed39>] 0xffffffffffffffff Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10net: cxgb4: fix various indentation issuesColin Ian King
There are some lines that have indentation issues, fix these. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10net: cxgb3: fix various indentation issuesColin Ian King
There are handful of lines that have indentation issues, fix these. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10ip: on queued skb use skb_header_pointer instead of pskb_may_pullWillem de Bruijn
Commit 2efd4fca703a ("ip: in cmsg IP(V6)_ORIGDSTADDR call pskb_may_pull") avoided a read beyond the end of the skb linear segment by calling pskb_may_pull. That function can trigger a BUG_ON in pskb_expand_head if the skb is shared, which it is when when peeking. It can also return ENOMEM. Avoid both by switching to safer skb_header_pointer. Fixes: 2efd4fca703a ("ip: in cmsg IP(V6)_ORIGDSTADDR call pskb_may_pull") Reported-by: syzbot <syzkaller@googlegroups.com> Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10tun: publish tfile after it's fully initializedStanislav Fomichev
BUG: unable to handle kernel NULL pointer dereference at 00000000000000d1 Call Trace: ? napi_gro_frags+0xa7/0x2c0 tun_get_user+0xb50/0xf20 tun_chr_write_iter+0x53/0x70 new_sync_write+0xff/0x160 vfs_write+0x191/0x1e0 __x64_sys_write+0x5e/0xd0 do_syscall_64+0x47/0xf0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 I think there is a subtle race between sending a packet via tap and attaching it: CPU0: CPU1: tun_chr_ioctl(TUNSETIFF) tun_set_iff tun_attach rcu_assign_pointer(tfile->tun, tun); tun_fops->write_iter() tun_chr_write_iter tun_napi_alloc_frags napi_get_frags napi->skb = napi_alloc_skb tun_napi_init netif_napi_add napi->skb = NULL napi->skb is NULL here napi_gro_frags napi_frags_skb skb = napi->skb skb_reset_mac_header(skb) panic() Move rcu_assign_pointer(tfile->tun) and rcu_assign_pointer(tun->tfiles) to be the last thing we do in tun_attach(); this should guarantee that when we call tun_get() we always get an initialized object. v2 changes: * remove extra napi_mutex locks/unlocks for napi operations Reported-by: syzbot <syzkaller@googlegroups.com> Fixes: 90e33d459407 ("tun: enable napi_gro_frags() for TUN/TAP driver") Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10tools headers powerpc: Remove unistd.hRavi Bangoria
We use syscall.tbl to generate system call table on powerpc. The unistd.h copy is no longer required now. Remove it. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/20190110094936.3132-2-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-10perf powerpc: Rework syscall table generationRavi Bangoria
Commit aff850393200 ("powerpc: add system call table generation support") changed how systemcall table is generated for powerpc. Incorporate these changes into perf as well. Committer testing: $ podman run --entrypoint=/bin/sh --privileged -v /home/acme/git:/git --rm -ti docker.io/acmel/linux-perf-tools-build-ubuntu:18.04-x-powerpc64 perfbuilder@d7a7af166a80:/git/perf$ head -2 /etc/os-release NAME="Ubuntu" VERSION="18.04.1 LTS (Bionic Beaver)" perfbuilder@d7a7af166a80:/git/perf$ perfbuilder@d7a7af166a80:/git/perf$ make ARCH=powerpc CROSS_COMPILE=powerpc64-linux-gnu- EXTRA_CFLAGS= -C /git/linux/tools/perf O=/tmp/build/perf make: Entering directory '/git/linux/tools/perf' BUILD: Doing 'make -j8' parallel build HOSTCC /tmp/build/perf/fixdep.o HOSTLD /tmp/build/perf/fixdep-in.o LINK /tmp/build/perf/fixdep Warning: Kernel ABI header at 'tools/include/uapi/linux/mman.h' differs from latest version at 'include/uapi/linux/mman.h' diff -u tools/include/uapi/linux/mman.h include/uapi/linux/mman.h sh: 1: command: Illegal option -c Auto-detecting system features: ... dwarf: [ on ] ... dwarf_getlocations: [ on ] ... glibc: [ on ] ... gtk2: [ OFF ] ... libaudit: [ OFF ] ... libbfd: [ OFF ] ... libelf: [ on ] ... libnuma: [ OFF ] ... numa_num_possible_cpus: [ OFF ] ... libperl: [ OFF ] ... libpython: [ OFF ] ... libslang: [ OFF ] ... libcrypto: [ OFF ] ... libunwind: [ OFF ] ... libdw-dwarf-unwind: [ on ] ... zlib: [ on ] ... lzma: [ OFF ] ... get_cpuid: [ OFF ] ... bpf: [ on ] Makefile.config:445: No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev Makefile.config:491: No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR Makefile.config:583: No libcrypto.h found, disables jitted code injection, please install libssl-devel or libssl-dev Makefile.config:598: slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev Makefile.config:612: GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev Makefile.config:639: Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev Makefile.config:666: No python interpreter was found: disables Python support - please install python-devel/python-dev Makefile.config:721: No bfd.h/libbfd found, please install binutils-dev[el]/zlib-static/libiberty-dev to gain symbol demangling Makefile.config:750: No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev Makefile.config:763: No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev Makefile.config:814: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev Makefile.config:840: No alternatives command found, you need to set JDIR= to point to the root of your Java directory GEN /tmp/build/perf/common-cmds.h <SNIP> CC /tmp/build/perf/util/syscalltbl.o <SNIP> LD /tmp/build/perf/libperf-in.o AR /tmp/build/perf/libperf.a LINK /tmp/build/perf/perf make: Leaving directory '/git/linux/tools/perf' perfbuilder@d7a7af166a80:/git/perf$ head /tmp/build/perf/arch/powerpc/include/generated/asm/syscalls_64.c static const char *syscalltbl_powerpc_64[] = { [0] = "restart_syscall", [1] = "exit", [2] = "fork", [3] = "read", [4] = "write", [5] = "open", [6] = "close", [7] = "waitpid", [8] = "creat", perfbuilder@d7a7af166a80:/git/perf$ tail /tmp/build/perf/arch/powerpc/include/generated/asm/syscalls_64.c [381] = "pwritev2", [382] = "kexec_file_load", [383] = "statx", [384] = "pkey_alloc", [385] = "pkey_free", [386] = "pkey_mprotect", [387] = "rseq", [388] = "io_pgetevents", }; #define SYSCALLTBL_POWERPC_64_MAX_ID 388 perfbuilder@d7a7af166a80:/git/perf$ head /tmp/build/perf/arch/powerpc/include/generated/asm/syscalls_32.c static const char *syscalltbl_powerpc_32[] = { [0] = "restart_syscall", [1] = "exit", [2] = "fork", [3] = "read", [4] = "write", [5] = "open", [6] = "close", [7] = "waitpid", [8] = "creat", perfbuilder@d7a7af166a80:/git/perf$ tail /tmp/build/perf/arch/powerpc/include/generated/asm/syscalls_32.c [381] = "pwritev2", [382] = "kexec_file_load", [383] = "statx", [384] = "pkey_alloc", [385] = "pkey_free", [386] = "pkey_mprotect", [387] = "rseq", [388] = "io_pgetevents", }; #define SYSCALLTBL_POWERPC_32_MAX_ID 388 perfbuilder@d7a7af166a80:/git/perf$ Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/20190110094936.3132-1-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-10drm: Fix documentation generation for DP_DPCD_QUIRK_NO_PSRJosé Roberto de Souza
The DP_DPCD_QUIRK_NO_PSR comment is missing colon causing this warning when generating kernel documentation. ./include/drm/drm_dp_helper.h:1374: warning: Incorrect use of kernel-doc format: * @DP_DPCD_QUIRK_NO_PSR Fixes: 1035f4a65f58 ("drm/i915: Disable PSR in Apple panels") Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Signed-off-by: José Roberto de Souza <jose.souza@intel.com> Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181205184850.13218-1-jose.souza@intel.com (cherry picked from commit ed17b555303c74a35f226268523b1695dbd4617d) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2019-01-10drm/i915: init per-engine WAs for all enginesDaniele Ceraolo Spurio
commit 4a15c75c4246 ("drm/i915: Introduce per-engine workarounds") refactored the workaround code to have functions per-engine, but didn't call any of them from logical_xcs_ring_init. Since we do have a non-RCS workaround for KBL (WaKBLVECSSemaphoreWaitPoll) we do need to call intel_engine_init_workarounds for non-RCS engines. Note that whitelist is still RCS-only. v2: move the call to logical_ring_init (Chris) Fixes: 4a15c75c4246 ("drm/i915: Introduce per-engine workarounds") Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190110013232.8972-2-daniele.ceraolospurio@intel.com (cherry picked from commit a60acb223fecc77531540196008ac2de89e2a162) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2019-01-10drm/i915: Unwind failure on pinning the gen7 ppgttChris Wilson
If we fail to pin the ggtt vma slot for the ppgtt page tables, we need to unwind the locals before reporting the error. Or else on subsequent attempts to bind the page tables into the ggtt, we will already believe that the vma has been pinned and continue on blithely. If something else should happen to be at that location, choas ensues. Fixes: a2bbf7148342 ("drm/i915/gtt: Only keep gen6 page directories pinned while active") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Matthew Auld <matthew.william.auld@gmail.com> Cc: <stable@vger.kernel.org> # v4.19+ Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181222030623.21710-1-chris@chris-wilson.co.uk (cherry picked from commit d4de753526f4d99f541f1b6ed1d963005c09700c) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2019-01-10drm/i915: Skip the ERR_PTR error stateChris Wilson
Although commit fb6f0b64e455 ("drm/i915: Prevent machine hang from Broxton's vtd w/a and error capture") applied cleanly after a 24 month hiatus, the code had moved on with new methods for peeking and fetching the captured gpu info. Make sure we catch all uses of the stashed error state and avoid dereferencing the error pointer. v2: Move error pointer determination into i915_gpu_capture_state v3: Restore early check to avoid capturing and then throwing away subsequent GPU error states. Fixes: fb6f0b64e455 ("drm/i915: Prevent machine hang from Broxton's vtd w/a and error capture") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181207110554.19897-1-chris@chris-wilson.co.uk (cherry picked from commit e6154e4cb8b0d3692f84ca0d66b4e1ba0389b134) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2019-01-10drm/i915: Disable PSR in Apple panelsJosé Roberto de Souza
i915 yet don't support PSR in Apple panels, so lets keep it disabled while we work on that. v2: Renamed DP_DPCD_QUIRK_PSR_NOT_CURRENTLY_SUPPORTED to DP_DPCD_QUIRK_NO_PSR (Ville) v3: Adding documentation to DP_DPCD_QUIRK_NO_PSR(Dhinakaran and Jani) Fixed typo in comment of the new quirk entry(Jani) Fixes: 598c6cfe0690 (drm/i915/psr: Enable PSR1 on gen-9+ HW) Cc: Jani Nikula <jani.nikula@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Signed-off-by: José Roberto de Souza <jose.souza@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181204003403.23361-1-jose.souza@intel.com (cherry picked from commit 7c5c641a930ed06ca317ee39faee7d5824266348) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2019-01-10Merge tag 'gvt-fixes-2019-01-09' of https://github.com/intel/gvt-linux into ↵Jani Nikula
drm-intel-fixes gvt-fixes-2019-01-09 - Fix one race issue between pre-scan of guest workload with submission Signed-off-by: Jani Nikula <jani.nikula@intel.com> From: Zhenyu Wang <zhenyuw@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190109050151.GL11631@zhen-hp.sh.intel.com
2019-01-10csky: fixup compile error with CPU 810.Guo Ren
This bug is from commit f553aa1c13cb ("csky: fixup relocation error with 807 & 860"). I forgot to compile with 810 for that patch. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-10ARM: dts: kirkwood: Fix polarity of GPIO fan linesLinus Walleij
These two lines are active high, not active low. The bug was found when we changed the kernel to respect the polarity defined in the device tree. Fixes: 1b90e06b1429 ("ARM: kirkwood: Use devicetree to define DNS-32[05] fan") Cc: Jamie Lentin <jm@lentin.co.uk> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Gregory Clement <gregory.clement@bootlin.com> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Cc: Julien D'Ascenzio <jdascenzio@posteo.net> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Tested-by: Jamie Lentin <jm@lentin.co.uk> Reported-by: Julien D'Ascenzio <jdascenzio@posteo.net> Tested-by: Julien D'Ascenzio <jdascenzio@posteo.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2019-01-10arm64: dts: marvell: mcbin: fix PCIe reset signalBaruch Siach
The MPP52 signal is on the seconds GPIO instance of CP0, which corresponds to the &cp0_gpio2 handle. Rename the property name to the standard '-gpios' suffix while at it. Fixes: b83e1669adce6 ("arm64: dts: marvell: mcbin: add support for PCIe") Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2019-01-10arm64: dts: marvell: armada-ap806: reserve PSCI areaHeinrich Schuchardt
The memory area [0x4000000-0x4200000[ is occupied by the PSCI firmware. Any attempt to access it from Linux leads to an immediate crash. So let's make the same memory reservation as the vendor kernel. [gregory: added as comment that this region matches the mainline U-boot] Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2019-01-10arm64: asm-prototypes: Fix fat-fingered typo in commentWill Deacon
Some of the right letters, not necessarily in the right order: CONFIG_MODEVERIONS -> CONFIG_MODVERSIONS Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-01-10mm/mmu_notifier: mm/rmap.c: Fix a mmu_notifier range bug in try_to_unmap_oneSean Christopherson
The conversion to use a structure for mmu_notifier_invalidate_range_*() unintentionally changed the usage in try_to_unmap_one() to init the 'struct mmu_notifier_range' with vma->vm_start instead of @address, i.e. it invalidates the wrong address range. Revert to the correct address range. Manifests as KVM use-after-free WARNINGs and subsequent "BUG: Bad page state in process X" errors when reclaiming from a KVM guest due to KVM removing the wrong pages from its own mappings. Reported-by: leozinho29_eu@hotmail.com Reported-by: Mike Galbraith <efault@gmx.de> Reported-and-tested-by: Adam Borowski <kilobyte@angband.pl> Reviewed-by: Jérôme Glisse <jglisse@redhat.com> Reviewed-by: Pankaj gupta <pagupta@redhat.com> Cc: Christian König <christian.koenig@amd.com> Cc: Jan Kara <jack@suse.cz> Cc: Matthew Wilcox <mawilcox@microsoft.com> Cc: Ross Zwisler <zwisler@kernel.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Felix Kuehling <felix.kuehling@amd.com> Cc: Ralph Campbell <rcampbell@nvidia.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Andrew Morton <akpm@linux-foundation.org> Fixes: ac46d4f3c432 ("mm/mmu_notifier: use structure for invalidate_range_start/end calls v2") Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-10gpu/drm: Fix lock held when returning to user space.Tetsuo Handa
We need to call drm_modeset_acquire_fini() when drm_atomic_state_alloc() failed or call drm_modeset_acquire_init() after drm_atomic_state_alloc() succeeded. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Reported-by: syzbot <syzbot+6ea337c427f5083ebdf2@syzkaller.appspotmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/1547115571-21219-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp
2019-01-10PM-runtime: Fix autosuspend_delay on 32bits archVincent Guittot
Cast autosuspend_delay to u64 to make sure that the full computation of 'expires' or slack will be done in u64, even on 32bits arch. Otherwise, any delay greater than 2^31 nsec can overflow if signed 32bits is used when converting delay from msec to nsec. Fixes: 8234f6734c5d (PM-runtime: Switch autosuspend over to using hrtimers) Reported-by: Tony Lindgren <tony@atomide.com> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-01-10PM-runtime: Fix 'jiffies' in comments after switch to hrtimersLadislav Michl
PM-runtime now uses the hrtimers infrastructure for autosuspend, however comments still reference 'jiffies'. Fixes: 8234f6734c5d (PM-runtime: Switch autosuspend over to using hrtimers) Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-01-10rbd: don't return 0 on unmap if RBD_DEV_FLAG_REMOVING is setIlya Dryomov
There is a window between when RBD_DEV_FLAG_REMOVING is set and when the device is removed from rbd_dev_list. During this window, we set "already" and return 0. Returning 0 from write(2) can confuse userspace tools because 0 indicates that nothing was written. In particular, "rbd unmap" will retry the write multiple times a second: 10:28:05.463299 write(4, "0", 1) = 0 10:28:05.463509 write(4, "0", 1) = 0 10:28:05.463720 write(4, "0", 1) = 0 10:28:05.463942 write(4, "0", 1) = 0 10:28:05.464155 write(4, "0", 1) = 0 Cc: stable@vger.kernel.org Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Tested-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
2019-01-10ARM: dts: da850-lcdk: Correct the sound card namePeter Ujfalusi
To avoid the following error: asoc-simple-card sound: ASoC: Failed to create card debugfs directory Which is because the card name contains '/' character, which can not be used in file or directory names. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-01-10ARM: dts: da850-lcdk: Correct the audio codec regulatorsPeter Ujfalusi
Add the board level fixed regulators for 3.3V and 1.8V which is used to power - among other things - the tlv320aic3106 codec. Apart from removing the following warning during boot: tlv320aic3x-codec 0-0018: Invalid supply voltage(s) AVDD: -22, DVDD: -22 With the correct voltages the driver can select correct OCMV value to reduce pop noise. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-01-10ARM: dts: da850-evm: Correct the sound card namePeter Ujfalusi
To avoid the following error: asoc-simple-card sound: ASoC: Failed to create card debugfs directory Which is because the card name contains '/' character, which can not be used in file or directory names. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-01-10ARM: dts: da850-evm: Correct the audio codec regulatorsPeter Ujfalusi
Add the board level fixed regulators for 3.3V and 1.8V which is used to power - among other things - the tlv320aic3106 codec. Apart from removing the following warning during boot: tlv320aic3x-codec 0-0018: Too high supply voltage(s) AVDD: 5000000, DVDD: 5000000 With the correct voltages the driver can select correct OCMV value to reduce pop noise. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-01-10ARM: davinci: omapl138-hawk: fix label names in GPIO lookup entriesBartosz Golaszewski
Since commit 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection") the gpiochip label no longer has an ID suffix. Update the GPIO lookup entries. Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection") Cc: stable@vger.kernel.org Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-01-10ARM: davinci: dm644x-evm: fix label names in GPIO lookup entriesBartosz Golaszewski
Since commit 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection") the gpiochip label no longer has an ID suffix. Update the GPIO lookup entries. Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection") Cc: stable@vger.kernel.org Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-01-10ARM: davinci: dm355-evm: fix label names in GPIO lookup entriesBartosz Golaszewski
Since commit 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection") the gpiochip label no longer has an ID suffix. Update the GPIO lookup entries. Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection") Cc: stable@vger.kernel.org Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-01-10ARM: davinci: da850-evm: fix label names in GPIO lookup entriesBartosz Golaszewski
Since commit 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection") the gpiochip label no longer has an ID suffix. Update the GPIO lookup entries. Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection") Cc: stable@vger.kernel.org Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-01-10ARM: davinci: da830-evm: fix label names in GPIO lookup entriesBartosz Golaszewski
Since commit 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection") the gpiochip label no longer has an ID suffix. Update the GPIO lookup entries. Fixes: 587f7a694f01 ("gpio: davinci: Use dev name for label and automatic base selection") Cc: stable@vger.kernel.org Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-01-10drm/fb-helper: Ignore the value of fb_var_screeninfo.pixclockIvan Mironov
Strict requirement of pixclock to be zero breaks support of SDL 1.2 which contains hardcoded table of supported video modes with non-zero pixclock values[1]. To better understand which pixclock values are considered valid and how driver should handle these values, I briefly examined few existing fbdev drivers and documentation in Documentation/fb/. And it looks like there are no strict rules on that and actual behaviour varies: * some drivers treat (pixclock == 0) as "use defaults" (uvesafb.c); * some treat (pixclock == 0) as invalid value which leads to -EINVAL (clps711x-fb.c); * some pass converted pixclock value to hardware (uvesafb.c); * some are trying to find nearest value from predefined table (vga16fb.c, video_gx.c). Given this, I believe that it should be safe to just ignore this value if changing is not supported. It seems that any portable fbdev application which was not written only for one specific device working under one specific kernel version should not rely on any particular behaviour of pixclock anyway. However, while enabling SDL1 applications to work out of the box when there is no /etc/fb.modes with valid settings, this change affects the video mode choosing logic in SDL. Depending on current screen resolution, contents of /etc/fb.modes and resolution requested by application, this may lead to user-visible difference (not always): image will be displayed in a right way, but it will be aligned to the left instead of center. There is no "right behaviour" here as well, as emulated fbdev, opposing to old fbdev drivers, simply ignores any requsts of video mode changes with resolutions smaller than current. The easiest way to reproduce this problem is to install sdl-sopwith[2], remove /etc/fb.modes file if it exists, and then try to run sopwith from console without X. At least in Fedora 29, sopwith may be simply installed from standard repositories. [1] SDL 1.2.15 source code, src/video/fbcon/SDL_fbvideo.c, vesa_timings [2] http://sdl-sopwith.sourceforge.net/ Signed-off-by: Ivan Mironov <mironov.ivan@gmail.com> Cc: stable@vger.kernel.org Fixes: 79e539453b34e ("DRM: i915: add mode setting support") Fixes: 771fe6b912fca ("drm/radeon: introduce kernel modesetting for radeon hardware") Fixes: 785b93ef8c309 ("drm/kms: move driver specific fb common code to helper functions (v2)") Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20190108072353.28078-3-mironov.ivan@gmail.com
2019-01-10drm/fb-helper: Partially bring back workaround for bugs of SDL 1.2Ivan Mironov
SDL 1.2 sets all fields related to the pixel format to zero in some cases[1]. Prior to commit db05c48197759 ("drm: fb-helper: Reject all pixel format changing requests"), there was an unintentional workaround for this that existed for more than a decade. First in device-specific DRM drivers, then here in drm_fb_helper.c. Previous code containing this workaround just ignores pixel format fields from userspace code. Not a good thing either, as this way, driver may silently use pixel format different from what client actually requested, and this in turn will lead to displaying garbage on the screen. I think that returning EINVAL to userspace in this particular case is the right option, so I decided to left code from problematic commit untouched instead of just reverting it entirely. Here is the steps required to reproduce this problem exactly: 1) Compile fceux[2] with SDL 1.2.15 and without GTK or OpenGL support. SDL should be compiled with fbdev support (which is on by default). 2) Create /etc/fb.modes with following contents (values seems not used, and just required to trigger problematic code in SDL): mode "test" geometry 1 1 1 1 1 timings 1 1 1 1 1 1 1 endmode 3) Create ~/.fceux/fceux.cfg with following contents: SDL.Hotkeys.Quit = 27 SDL.DoubleBuffering = 1 4) Ensure that screen resolution is at least 1280x960 (e.g. append "video=Virtual-1:1280x960-32" to the kernel cmdline for qemu/QXL). 5) Try to run fceux on VT with some ROM file[3]: # ./fceux color_test.nes [1] SDL 1.2.15 source code, src/video/fbcon/SDL_fbvideo.c, FB_SetVideoMode() [2] http://www.fceux.com [3] Example ROM: https://github.com/bokuweb/rustynes/blob/master/roms/color_test.nes Reported-by: saahriktu <mail@saahriktu.org> Suggested-by: saahriktu <mail@saahriktu.org> Cc: stable@vger.kernel.org Fixes: db05c48197759 ("drm: fb-helper: Reject all pixel format changing requests") Signed-off-by: Ivan Mironov <mironov.ivan@gmail.com> [danvet: Delete misleading comment.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20190108072353.28078-2-mironov.ivan@gmail.com Link: https://patchwork.freedesktop.org/patch/msgid/20190108072353.28078-2-mironov.ivan@gmail.com
2019-01-09loop: drop caches if offset or block_size are changedJaegeuk Kim
If we don't drop caches used in old offset or block_size, we can get old data from new offset/block_size, which gives unexpected data to user. For example, Martijn found a loopback bug in the below scenario. 1) LOOP_SET_FD loads first two pages on loop file 2) LOOP_SET_STATUS64 changes the offset on the loop file 3) mount is failed due to the cached pages having wrong superblock Cc: Jens Axboe <axboe@kernel.dk> Cc: linux-block@vger.kernel.org Reported-by: Martijn Coenen <maco@google.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-01-09bpf: correctly set initial window on active Fast Open senderYuchung Cheng
The existing BPF TCP initial congestion window (TCP_BPF_IW) does not to work on (active) Fast Open sender. This is because it changes the (initial) window only if data_segs_out is zero -- but data_segs_out is also incremented on SYN-data. This patch fixes the issue by proerly accounting for SYN-data additionally. Fixes: fc7478103c84 ("bpf: Adds support for setting initial cwnd") Signed-off-by: Yuchung Cheng <ycheng@google.com> Reviewed-by: Neal Cardwell <ncardwell@google.com> Acked-by: Lawrence Brakmo <brakmo@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-01-09tty/serial: Add RISC-V SBI earlycon supportAnup Patel
In RISC-V, the M-mode runtime firmware provide SBI calls for debug prints. This patch adds earlycon support using RISC-V SBI console calls. To enable it, just pass "earlycon=sbi" in kernel parameters. Signed-off-by: Anup Patel <anup@brainfault.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Palmer Dabbelt <palmer@sifive.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-01-09block: fix kerneldoc comment for blk_attempt_plug_merge()Jonathan Corbet
Commit 5f0ed774ed29 ("block: sum requests in the plug structure") removed the request_count parameter from block_attempt_plug_merge(), but did not remove the associated kerneldoc comment, introducing this warning to the docs build: ./block/blk-core.c:685: warning: Excess function parameter 'request_count' description in 'blk_attempt_plug_merge' Remove the obsolete description and make things a little quieter. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-01-09drm/amdgpu: disable system memory page tables for nowChristian König
We hit a problem with IOMMU with that. Disable until we have time to debug further. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-01-09drm/amdgpu: set WRITE_BURST_LENGTH to 64B to workaround SDMA1 hangJim Qu
effect asics: VEGA10 and VEGA12 Signed-off-by: Jim Qu <Jim.Qu@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-01-09drm/amdgpu: fix CPDMA hang in PRT mode for VEGA20Tao Zhou
Fix CPDMA hang in PRT mode for both VEGA10 and VEGA20 Signed-off-by: Tao Zhou <tao.zhou1@amd.com> Tested-by: Yukun.Li <yukun1.li@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-01-09perf symbols: Add 'arch_cpu_idle' to the list of kernel idle symbolsArnaldo Carvalho de Melo
When testing 'perf top' on a armhf system (32-bit, Orange Pi Zero), I noticed that 'arch_cpu_idle' dominated, add it to the list of idle symbols, so that we can see what is that being done when not idle. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-4q2b5g4p2hrstrhp9t2mrlho@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-09nvme: don't initlialize ctrl->cntlid twiceAndrey Smirnov
ctrl->cntlid will already be initialized from id->cntlid for non-NVME_F_FABRICS controllers few lines below. For NVME_F_FABRICS controllers this field should already be initialized, otherwise the check if (ctrl->cntlid != le16_to_cpu(id->cntlid)) below will always be a no-op. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Reviewed-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
2019-01-09nvme: introduce NVME_QUIRK_IGNORE_DEV_SUBNQNJames Dingwall
If a device provides an NQN it is expected to be globally unique. Unfortunately some firmware revisions for Intel 760p/Pro 7600p devices did not satisfy this requirement. In these circumstances if a system has >1 affected device then only one device is enabled. If this quirk is enabled then the device supplied subnqn is ignored and we fallback to generating one as if the field was empty. In this case we also suppress the version check so we don't print a warning when the quirk is enabled. Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: James Dingwall <james@dingwall.me.uk> Signed-off-by: Christoph Hellwig <hch@lst.de>
generated by cgit (git 2.34.1) at 2025-09-11 19:14:59 +0000