user/sven/linux.git, branch v4.4.142

Linux 4.4.142

2018-07-19T13:35:58Z

perf tools: Move syscall number fallbacks from perf-sys.h to tools/arch/x86/include/asm/

2018-07-19T13:35:57Z

commit cec07f53c398f22576df77052c4777dc13f14962 upstream. And remove the empty tools/arch/x86/include/asm/unistd_{32,64}.h files introduced by eae7a755ee81 ("perf tools, x86: Build perf on older user-space as well"). This way we get closer to mirroring the kernel for cases where __NR_ can't be found for some include path/_GNU_SOURCE/whatever scenario. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-kpj6m3mbjw82kg6krk2z529e@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo Cc: Konstantin Khlebnikov Signed-off-by: Greg Kroah-Hartman

x86/cpu: Probe CPUID leaf 6 even when cpuid_level == 6

2018-07-19T13:35:57Z

commit 3df8d9208569ef0b2313e516566222d745f3b94b upstream. A typo (or mis-merge?) resulted in leaf 6 only being probed if cpuid_level >= 7. Fixes: 2ccd71f1b278 ("x86/cpufeature: Move some of the scattered feature bits to x86_capability") Signed-off-by: Andy Lutomirski Acked-by: Borislav Petkov Cc: Brian Gerst Link: http://lkml.kernel.org/r/6ea30c0e9daec21e488b54761881a6dfcf3e04d0.1481825597.git.luto@kernel.org Signed-off-by: Thomas Gleixner Cc: Brad Spengler Signed-off-by: Greg Kroah-Hartman

Kbuild: fix # escaping in .cmd files for future Make

2018-07-19T13:35:57Z

commit 9564a8cf422d7b58f6e857e3546d346fa970191e upstream. I tried building using a freshly built Make (4.2.1-69-g8a731d1), but already the objtool build broke with orc_dump.c: In function ‘orc_dump’: orc_dump.c:106:2: error: ‘elf_getshnum’ is deprecated [-Werror=deprecated-declarations] if (elf_getshdrnum(elf, &nr_sections)) { Turns out that with that new Make, the backslash was not removed, so cpp didn't see a #include directive, grep found nothing, and -DLIBELF_USE_DEPRECATED was wrongly put in CFLAGS. Now, that new Make behaviour is documented in their NEWS file: * WARNING: Backward-incompatibility! Number signs (#) appearing inside a macro reference or function invocation no longer introduce comments and should not be escaped with backslashes: thus a call such as: foo := $(shell echo '#') is legal. Previously the number sign needed to be escaped, for example: foo := $(shell echo '\#') Now this latter will resolve to "\#". If you want to write makefiles portable to both versions, assign the number sign to a variable: C := \# foo := $(shell echo '$C') This was claimed to be fixed in 3.81, but wasn't, for some reason. To detect this change search for 'nocomment' in the .FEATURES variable. This also fixes up the two make-cmd instances to replace # with $(pound) rather than with \#. There might very well be other places that need similar fixup in preparation for whatever future Make release contains the above change, but at least this builds an x86_64 defconfig with the new make. Link: https://bugzilla.kernel.org/show_bug.cgi?id=197847 Cc: Randy Dunlap Signed-off-by: Rasmus Villemoes Signed-off-by: Masahiro Yamada Cc: Konstantin Khlebnikov Signed-off-by: Greg Kroah-Hartman

Linux 4.4.141

2018-07-17T09:31:46Z

loop: remember whether sysfs_create_group() was done

2018-07-17T09:31:46Z

commit d3349b6b3c373ac1fbfb040b810fcee5e2adc7e0 upstream. syzbot is hitting WARN() triggered by memory allocation fault injection [1] because loop module is calling sysfs_remove_group() when sysfs_create_group() failed. Fix this by remembering whether sysfs_create_group() succeeded. [1] https://syzkaller.appspot.com/bug?id=3f86c0edf75c86d2633aeb9dd69eccc70bc7e90b Signed-off-by: Tetsuo Handa Reported-by: syzbot Reviewed-by: Greg Kroah-Hartman Renamed sysfs_ready -> sysfs_inited. Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman

RDMA/ucm: Mark UCM interface as BROKEN

2018-07-17T09:31:46Z

commit 7a8690ed6f5346f6738971892205e91d39b6b901 upstream. In commit 357d23c811a7 ("Remove the obsolete libibcm library") in rdma-core [1], we removed obsolete library which used the /dev/infiniband/ucmX interface. Following multiple syzkaller reports about non-sanitized user input in the UCMA module, the short audit reveals the same issues in UCM module too. It is better to disable this interface in the kernel, before syzkaller team invests time and energy to harden this unused interface. [1] https://github.com/linux-rdma/rdma-core/pull/279 Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe Signed-off-by: Greg Kroah-Hartman

PM / hibernate: Fix oops at snapshot_write()

2018-07-17T09:31:46Z

commit fc14eebfc20854a38fd9f1d93a42b1783dad4d17 upstream. syzbot is reporting NULL pointer dereference at snapshot_write() [1]. This is because data->handle is zero-cleared by ioctl(SNAPSHOT_FREE). Fix this by checking data_of(data->handle) != NULL before using it. [1] https://syzkaller.appspot.com/bug?id=828a3c71bd344a6de8b6a31233d51a72099f27fd Signed-off-by: Tetsuo Handa Reported-by: syzbot Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman

loop: add recursion validation to LOOP_CHANGE_FD

2018-07-17T09:31:46Z

commit d2ac838e4cd7e5e9891ecc094d626734b0245c99 upstream. Refactor the validation code used in LOOP_SET_FD so it is also used in LOOP_CHANGE_FD. Otherwise it is possible to construct a set of loop devices that all refer to each other. This can lead to a infinite loop in starting with "while (is_loop_device(f)) .." in loop_set_fd(). Fix this by refactoring out the validation code and using it for LOOP_CHANGE_FD as well as LOOP_SET_FD. Reported-by: syzbot+4349872271ece473a7c91190b68b4bac7c5dbc87@syzkaller.appspotmail.com Reported-by: syzbot+40bd32c4d9a3cc12a339@syzkaller.appspotmail.com Reported-by: syzbot+769c54e66f994b041be7@syzkaller.appspotmail.com Reported-by: syzbot+0a89a9ce473936c57065@syzkaller.appspotmail.com Signed-off-by: Theodore Ts'o Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman

netfilter: x_tables: initialise match/target check parameter struct

2018-07-17T09:31:46Z

commit c568503ef02030f169c9e19204def610a3510918 upstream. syzbot reports following splat: BUG: KMSAN: uninit-value in ebt_stp_mt_check+0x24b/0x450 net/bridge/netfilter/ebt_stp.c:162 ebt_stp_mt_check+0x24b/0x450 net/bridge/netfilter/ebt_stp.c:162 xt_check_match+0x1438/0x1650 net/netfilter/x_tables.c:506 ebt_check_match net/bridge/netfilter/ebtables.c:372 [inline] ebt_check_entry net/bridge/netfilter/ebtables.c:702 [inline] The uninitialised access is xt_mtchk_param->nft_compat ... which should be set to 0. Fix it by zeroing the struct beforehand, same for tgchk. ip(6)tables targetinfo uses c99-style initialiser, so no change needed there. Reported-by: syzbot+da4494182233c23a5fcf@syzkaller.appspotmail.com Fixes: 55917a21d0cc0 ("netfilter: x_tables: add context to know if extension runs from nft_compat") Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso Signed-off-by: Greg Kroah-Hartman