- 30 Apr, 2016 15 commits
-
-
Dan Carpenter authored
commit 210bd104 upstream. We have to unlock before returning -ENOMEM. Fixes: 8dfbcc43 ('[media] xc2028: avoid use after free') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@osg.samsung.com> Signed-off-by:
Ben Hutchings <ben@decadent.org.uk>
-
Mauro Carvalho Chehab authored
commit 8dfbcc43 upstream. If struct xc2028_config is passed without a firmware name, the following trouble may happen: [11009.907205] xc2028 5-0061: type set to XCeive xc2028/xc3028 tuner [11009.907491] ================================================================== [11009.907750] BUG: KASAN: use-after-free in strcmp+0x96/0xb0 at addr ffff8803bd78ab40 [11009.907992] Read of size 1 by task modprobe/28992 [11009.907994] ============================================================================= [11009.907997] BUG kmalloc-16 (Tainted: G W ): kasan: bad access detected [11009.907999] ----------------------------------------------------------------------------- [11009.908008] INFO: Allocated in xhci_urb_enqueue+0x214/0x14c0 [xhci_hcd] age=0 cpu=3 pid=28992 [11009.908012] ___slab_alloc+0x581/0x5b0 [11009.908014] __slab_alloc+0x51/0x90 [11009.908017] __kmalloc+0x27b/0x350 [11009.908022] xhci_urb_enqueue+0x214/0x14c0 [xhci_hcd] [11009.908026] usb_hcd_submit_urb+0x1e8/0x1c60 [11009.908029] usb_submit_urb+0xb0e/0x1200 [11009.908032] usb_serial_generic_write_start+0xb6/0x4c0 [11009.908035] usb_serial_generic_write+0x92/0xc0 [11009.908039] usb_console_write+0x38a/0x560 [11009.908045] call_console_drivers.constprop.14+0x1ee/0x2c0 [11009.908051] console_unlock+0x40d/0x900 [11009.908056] vprintk_emit+0x4b4/0x830 [11009.908061] vprintk_default+0x1f/0x30 [11009.908064] printk+0x99/0xb5 [11009.908067] kasan_report_error+0x10a/0x550 [11009.908070] __asan_report_load1_noabort+0x43/0x50 [11009.908074] INFO: Freed in xc2028_set_config+0x90/0x630 [tuner_xc2028] age=1 cpu=3 pid=28992 [11009.908077] __slab_free+0x2ec/0x460 [11009.908080] kfree+0x266/0x280 [11009.908083] xc2028_set_config+0x90/0x630 [tuner_xc2028] [11009.908086] xc2028_attach+0x310/0x8a0 [tuner_xc2028] [11009.908090] em28xx_attach_xc3028.constprop.7+0x1f9/0x30d [em28xx_dvb] [11009.908094] em28xx_dvb_init.part.3+0x8e4/0x5cf4 [em28xx_dvb] [11009.908098] em28xx_dvb_init+0x81/0x8a [em28xx_dvb] [11009.908101] em28xx_register_extension+0xd9/0x190 [em28xx] [11009.908105] em28xx_dvb_register+0x10/0x1000 [em28xx_dvb] [11009.908108] do_one_initcall+0x141/0x300 [11009.908111] do_init_module+0x1d0/0x5ad [11009.908114] load_module+0x6666/0x9ba0 [11009.908117] SyS_finit_module+0x108/0x130 [11009.908120] entry_SYSCALL_64_fastpath+0x16/0x76 [11009.908123] INFO: Slab 0xffffea000ef5e280 objects=25 used=25 fp=0x (null) flags=0x2ffff8000004080 [11009.908126] INFO: Object 0xffff8803bd78ab40 @offset=2880 fp=0x0000000000000001 [11009.908130] Bytes b4 ffff8803bd78ab30: 01 00 00 00 2a 07 00 00 9d 28 00 00 01 00 00 00 ....*....(...... [11009.908133] Object ffff8803bd78ab40: 01 00 00 00 00 00 00 00 b0 1d c3 6a 00 88 ff ff ...........j.... [11009.908137] CPU: 3 PID: 28992 Comm: modprobe Tainted: G B W 4.5.0-rc1+ #43 [11009.908140] Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0350.2015.0812.1722 08/12/2015 [11009.908142] ffff8803bd78a000 ffff8802c273f1b8 ffffffff81932007 ffff8803c6407a80 [11009.908148] ffff8802c273f1e8 ffffffff81556759 ffff8803c6407a80 ffffea000ef5e280 [11009.908153] ffff8803bd78ab40 dffffc0000000000 ffff8802c273f210 ffffffff8155ccb4 [11009.908158] Call Trace: [11009.908162] [<ffffffff81932007>] dump_stack+0x4b/0x64 [11009.908165] [<ffffffff81556759>] print_trailer+0xf9/0x150 [11009.908168] [<ffffffff8155ccb4>] object_err+0x34/0x40 [11009.908171] [<ffffffff8155f260>] kasan_report_error+0x230/0x550 [11009.908175] [<ffffffff81237d71>] ? trace_hardirqs_off_caller+0x21/0x290 [11009.908179] [<ffffffff8155e926>] ? kasan_unpoison_shadow+0x36/0x50 [11009.908182] [<ffffffff8155f5c3>] __asan_report_load1_noabort+0x43/0x50 [11009.908185] [<ffffffff8155ea00>] ? __asan_register_globals+0x50/0xa0 [11009.908189] [<ffffffff8194cea6>] ? strcmp+0x96/0xb0 [11009.908192] [<ffffffff8194cea6>] strcmp+0x96/0xb0 [11009.908196] [<ffffffffa13ba4ac>] xc2028_set_config+0x15c/0x630 [tuner_xc2028] [11009.908200] [<ffffffffa13bac90>] xc2028_attach+0x310/0x8a0 [tuner_xc2028] [11009.908203] [<ffffffff8155ea78>] ? memset+0x28/0x30 [11009.908206] [<ffffffffa13ba980>] ? xc2028_set_config+0x630/0x630 [tuner_xc2028] [11009.908211] [<ffffffffa157a59a>] em28xx_attach_xc3028.constprop.7+0x1f9/0x30d [em28xx_dvb] [11009.908215] [<ffffffffa157aa2a>] ? em28xx_dvb_init.part.3+0x37c/0x5cf4 [em28xx_dvb] [11009.908219] [<ffffffffa157a3a1>] ? hauppauge_hvr930c_init+0x487/0x487 [em28xx_dvb] [11009.908222] [<ffffffffa01795ac>] ? lgdt330x_attach+0x1cc/0x370 [lgdt330x] [11009.908226] [<ffffffffa01793e0>] ? i2c_read_demod_bytes.isra.2+0x210/0x210 [lgdt330x] [11009.908230] [<ffffffff812e87d0>] ? ref_module.part.15+0x10/0x10 [11009.908233] [<ffffffff812e56e0>] ? module_assert_mutex_or_preempt+0x80/0x80 [11009.908238] [<ffffffffa157af92>] em28xx_dvb_init.part.3+0x8e4/0x5cf4 [em28xx_dvb] [11009.908242] [<ffffffffa157a6ae>] ? em28xx_attach_xc3028.constprop.7+0x30d/0x30d [em28xx_dvb] [11009.908245] [<ffffffff8195222d>] ? string+0x14d/0x1f0 [11009.908249] [<ffffffff8195381f>] ? symbol_string+0xff/0x1a0 [11009.908253] [<ffffffff81953720>] ? uuid_string+0x6f0/0x6f0 [11009.908257] [<ffffffff811a775e>] ? __kernel_text_address+0x7e/0xa0 [11009.908260] [<ffffffff8104b02f>] ? print_context_stack+0x7f/0xf0 [11009.908264] [<ffffffff812e9846>] ? __module_address+0xb6/0x360 [11009.908268] [<ffffffff8137fdc9>] ? is_ftrace_trampoline+0x99/0xe0 [11009.908271] [<ffffffff811a775e>] ? __kernel_text_address+0x7e/0xa0 [11009.908275] [<ffffffff81240a70>] ? debug_check_no_locks_freed+0x290/0x290 [11009.908278] [<ffffffff8104a24b>] ? dump_trace+0x11b/0x300 [11009.908282] [<ffffffffa13e8143>] ? em28xx_register_extension+0x23/0x190 [em28xx] [11009.908285] [<ffffffff81237d71>] ? trace_hardirqs_off_caller+0x21/0x290 [11009.908289] [<ffffffff8123ff56>] ? trace_hardirqs_on_caller+0x16/0x590 [11009.908292] [<ffffffff812404dd>] ? trace_hardirqs_on+0xd/0x10 [11009.908296] [<ffffffffa13e8143>] ? em28xx_register_extension+0x23/0x190 [em28xx] [11009.908299] [<ffffffff822dcbb0>] ? mutex_trylock+0x400/0x400 [11009.908302] [<ffffffff810021a1>] ? do_one_initcall+0x131/0x300 [11009.908306] [<ffffffff81296dc7>] ? call_rcu_sched+0x17/0x20 [11009.908309] [<ffffffff8159e708>] ? put_object+0x48/0x70 [11009.908314] [<ffffffffa1579f11>] em28xx_dvb_init+0x81/0x8a [em28xx_dvb] [11009.908317] [<ffffffffa13e81f9>] em28xx_register_extension+0xd9/0x190 [em28xx] [11009.908320] [<ffffffffa0150000>] ? 0xffffffffa0150000 [11009.908324] [<ffffffffa0150010>] em28xx_dvb_register+0x10/0x1000 [em28xx_dvb] [11009.908327] [<ffffffff810021b1>] do_one_initcall+0x141/0x300 [11009.908330] [<ffffffff81002070>] ? try_to_run_init_process+0x40/0x40 [11009.908333] [<ffffffff8123ff56>] ? trace_hardirqs_on_caller+0x16/0x590 [11009.908337] [<ffffffff8155e926>] ? kasan_unpoison_shadow+0x36/0x50 [11009.908340] [<ffffffff8155e926>] ? kasan_unpoison_shadow+0x36/0x50 [11009.908343] [<ffffffff8155e926>] ? kasan_unpoison_shadow+0x36/0x50 [11009.908346] [<ffffffff8155ea37>] ? __asan_register_globals+0x87/0xa0 [11009.908350] [<ffffffff8144da7b>] do_init_module+0x1d0/0x5ad [11009.908353] [<ffffffff812f2626>] load_module+0x6666/0x9ba0 [11009.908356] [<ffffffff812e9c90>] ? symbol_put_addr+0x50/0x50 [11009.908361] [<ffffffffa1580037>] ? em28xx_dvb_init.part.3+0x5989/0x5cf4 [em28xx_dvb] [11009.908366] [<ffffffff812ebfc0>] ? module_frob_arch_sections+0x20/0x20 [11009.908369] [<ffffffff815bc940>] ? open_exec+0x50/0x50 [11009.908374] [<ffffffff811671bb>] ? ns_capable+0x5b/0xd0 [11009.908377] [<ffffffff812f5e58>] SyS_finit_module+0x108/0x130 [11009.908379] [<ffffffff812f5d50>] ? SyS_init_module+0x1f0/0x1f0 [11009.908383] [<ffffffff81004044>] ? lockdep_sys_exit_thunk+0x12/0x14 [11009.908394] [<ffffffff822e6936>] entry_SYSCALL_64_fastpath+0x16/0x76 [11009.908396] Memory state around the buggy address: [11009.908398] ffff8803bd78aa00: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc [11009.908401] ffff8803bd78aa80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [11009.908403] >ffff8803bd78ab00: fc fc fc fc fc fc fc fc 00 00 fc fc fc fc fc fc [11009.908405] ^ [11009.908407] ffff8803bd78ab80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [11009.908409] ffff8803bd78ac00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [11009.908411] ================================================================== In order to avoid it, let's set the cached value of the firmware name to NULL after freeing it. While here, return an error if the memory allocation fails. Signed-off-by:
-
Tom Lendacky authored
commit d1662165 upstream. Since the exported information can be exposed to user-space, instead of exporting the entire request context only export the minimum information needed. Signed-off-by:
Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
-
Al Viro authored
commit 6b87b70c upstream. Prior to 3.13 make allmodconfig KCONFIG_ALLCONFIG=/dev/null used to be equivalent to make allmodconfig; these days it hardwires MODULES to n. In fact, any KCONFIG_ALLCONFIG that doesn't set MODULES explicitly is treated as if it set it to n. Regression had been introduced by commit cfa98f ("kconfig: do not override symbols already set"); what happens is that conf_read_simple() does sym_calc_value(modules_sym) on exit, which leaves SYMBOL_VALID set and has conf_set_all_new_symbols() skip modules_sym. It's pretty easy to fix - simply move that call of sym_calc_value() into the callers, except for the ones in KCONFIG_ALLCONFIG handling. Objections? Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Fixes: cfa98f2e ("kconfig: do not override symbols already set") Signed-off-by:
Michal Marek <mmarek@suse.com> [bwh: Backported to 3.16: old code also checked for modules_sym != NULL; drop the check since it's only useful for other projects] Signed-off-by:
-
Hans de Goede authored
commit 7445e45d upstream. SPC 880NC PC camera discussions: http://www.pclinuxos.com/forum/index.php/topic,135688.0.htmlReported-by:
Kikim <klucznik0@op.pl> Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
-
Tiffany Lin authored
commit 7df5ab87 upstream. In v4l2-compliance utility, test QUERYBUF required correct length value to go through each planar to check planar's length in multi-planar buffer type Signed-off-by:
Tiffany Lin <tiffany.lin@mediatek.com> Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by:
-
Peter Hurley authored
commit f33798de upstream. commit 9ce119f3 ("tty: Fix GPF in flush_to_ldisc()") fixed a GPF caused by a line discipline which does not define a receive_buf() method. However, the vt driver (and speakup driver also) pushes selection data directly to the line discipline receive_buf() method via tty_ldisc_receive_buf(). Fix the same problem in tty_ldisc_receive_buf(). Signed-off-by:
Peter Hurley <peter@hurleysoftware.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
-
Arnd Bergmann authored
commit ba4bc32e upstream. An older patch to convert the API in the s3c i2s driver ended up passing a const pointer into a function that takes a non-const pointer, so we now get a warning: sound/soc/samsung/s3c2412-i2s.c: In function 's3c2412_iis_dev_probe': sound/soc/samsung/s3c2412-i2s.c:172:9: error: passing argument 3 of 's3c_i2sv2_register_component' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers] However, the s3c_i2sv2_register_component() function again passes the pointer into another function taking a const, so we just need to change its prototype. Fixes: eca3b01d ("ASoC: switch over to use snd_soc_register_component() on s3c i2s") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Reviewed-by:
Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
-
Markus Trippelsdorf authored
commit d85ce830 upstream. One line in perf_pmu__parse_unit() is indented wrongly, leading to a warning (=> error) from gcc 6: util/pmu.c:156:3: error: statement is indented as if it were guarded by... [-Werror=misleading-indentation] sret = read(fd, alias->unit, UNIT_MAX_LEN); ^~~~ util/pmu.c:153:2: note: ...this 'if' clause, but it is not if (fd == -1) ^~ Signed-off-by:
Markus Trippelsdorf <markus@trippelsdorf.de> Acked-by:
Ingo Molnar <mingo@kernel.org> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: 410136f5 ("tools/perf/stat: Add event unit and scale support") Link: http://lkml.kernel.org/r/20151214154440.GC1409@x4Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
-
Lucas Stach authored
commit 4d107d3b upstream. imx6_pcie_link_up() previously used usleep_range() to wait for the link to come up. Since it may be called while holding the config spinlock, the sleep causes a "BUG: scheduling while atomic" error. Instead of waiting for the link to come up in imx6_pcie_link_up(), do the waiting in imx6_pcie_wait_for_link(), where we're not holding a lock and sleeping is allowed. [bhelgaas: changelog, references to bugzilla and f95d3ae7] Link: https://bugzilla.kernel.org/show_bug.cgi?id=100031 Fixes: f95d3ae7 ("PCI: imx6: Wait for retraining") Signed-off-by:
Lucas Stach <l.stach@pengutronix.de> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> [bwh: Backported to 3.16: also update the retry loop in imx6_pcie_wait_for_link() as done upstream in commit 6cbb247e ("PCI: designware: Wait for link to come up with consistent style")] Signed-off-by:
-
Lucas Stach authored
commit a77c5422 upstream. Remove the remnants of the workaround for erratum ERR005184 which was never completely implemented. The checks alone don't carry any value as we don't act properly on the result. A workaround should be added to the lane speed change in establish_link later. Signed-off-by:
-
Lucas Stach authored
commit 54a47a83 upstream. This adds the PHY reset into a common error path of imx6_pcie_establish_link(), deduplicating some of the debug prints. Also reduce the severity of the "no-link" message in the one place where it is expected to be hit when no peripheral is attached. Signed-off-by:
-
Lucas Stach authored
commit 53eeb48b upstream. Move imx6_pcie_reset_phy() near the other PHY related functions in the file. This is a cosmetic change, but also allows to do the following changes without introducing needless forward declarations. Signed-off-by:
-
Tom Lendacky authored
commit 952bce97 upstream. Commit 8996eafd ("crypto: ahash - ensure statesize is non-zero") added a check to prevent ahash algorithms from successfully registering if the import and export functions were not implemented. This prevents an oops in the hash_accept function of algif_hash. This commit causes the ccp-crypto module SHA support and AES CMAC support from successfully registering and causing the ccp-crypto module load to fail because the ahash import and export functions are not implemented. Update the CCP Crypto API support to provide import and export support for ahash algorithms. Signed-off-by:
-
Dan Carpenter authored
commit 6f3508f6 upstream. dct_sel_base_off is declared as a u64 but we're only using the lower 32 bits because of a shift wrapping bug. This can possibly truncate the upper 16 bits of DctSelBaseOffset[47:26], causing us to misdecode the CS row. Fixes: c8e518d5 ('amd64_edac: Sanitize f10_get_base_addr_offset') Signed-off-by:
Borislav Petkov <bp@suse.de> Signed-off-by:
-
- 15 Apr, 2016 1 commit
-
-
Luis Henriques authored
Signed-off-by:Luis Henriques <luis.henriques@canonical.com>
-
- 11 Apr, 2016 6 commits
-
-
Vitaly Kuznetsov authored
commit e513229b upstream. When an SMP Hyper-V guest is running on top of 2012R2 Server and secondary cpus are sent offline (with echo 0 > /sys/devices/system/cpu/cpu$cpu/online) the system freeze is observed. This happens due to the fact that on newer hypervisors (Win8, WS2012R2, ...) vmbus channel handlers are distributed across all cpus (see init_vp_index() function in drivers/hv/channel_mgmt.c) and on cpu offlining nobody reassigns them to CPU0. Prevent cpu offlining when vmbus is loaded until the issue is fixed host-side. This patch also disables hibernation but it is OK as it is also broken (MCE error is hit on resume). Suspend still works. Tested with WS2008R2 and WS2012R2. Signed-off-by:
Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by:
K. Y. Srinivasan <kys@microsoft.com> Signed-off-by:
-
Nicolai Hähnle authored
commit f6ff4f67 upstream. An arbitrary amount of time can pass between spin_unlock and radeon_fence_wait_any, so we need to ensure that nobody frees the fences from under us. Based on the analogous fix for amdgpu. Signed-off-by:
Nicolai Hähnle <nicolai.haehnle@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> (v1 + fix) Tested-by:
Lutz Euler <lutz.euler@freenet.de> [ nicolai: Backport of upstream commit f6ff4f67, with an additional NULL pointer guard that is required for kernels 3.17 and older. To be precise, any kernel that does *not* have commit 954605ca "drm/radeon: use common fence implementation for fences, v4" requires this additional NULL pointer guard.] Signed-off-by:
-
Spencer E. Olson authored
commit 1fd24a47 upstream. This fixes a bug in function ni_tio_input_inttrig(). The trigger number should be compared to cmd->start_arg, not cmd->start_src. Fixes: 6a760394 ("staging: comedi: ni_tiocmd: clarify the cmd->start_arg validation and use") Signed-off-by:
Spencer E. Olson <olsonse@umich.edu> Reviewed-by:
Ian Abbott <abbotti@mev.co.uk> Signed-off-by:
-
Andy Lutomirski authored
commit b7a58459 upstream. On Xen PV, regs->flags doesn't reliably reflect IOPL and the exit-to-userspace code doesn't change IOPL. We need to context switch it manually. I'm doing this without going through paravirt because this is specific to Xen PV. After the dust settles, we can merge this with the 32-bit code, tidy up the iopl syscall implementation, and remove the set_iopl pvop entirely. Fixes XSA-171. Reviewewd-by:
Jan Beulich <JBeulich@suse.com> Signed-off-by:
Andy Lutomirski <luto@kernel.org> Cc: Andrew Cooper <andrew.cooper3@citrix.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jan Beulich <JBeulich@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/693c3bd7aeb4d3c27c92c622b7d0f554a458173c.1458162709.git.luto@kernel.orgSigned-off-by:
Kamal Mostafa <kamal@canonical.com> Signed-off-by:
-
Ingo Molnar authored
commit 590ee7db upstream. Now that we are using smpboot_thread_init() in init/main.c as well, provide it for !CONFIG_SMP as well. This addresses a !CONFIG_SMP build failure. Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Borislav Petkov <bp@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by:
-
Yan, Zheng authored
commit 1f041a89 upstream. struct timespec uses 'long' to present second and nanosecond. 'long' is 64 bits on 64bits machine. ceph MDS expects time stamp to be encoded as struct ceph_timespec, which uses 'u32' to present second and nanosecond. Signed-off-by:
Yan, Zheng <zyan@redhat.com> BugLink: http://tracker.ceph.com/issues/15302 BugLink: http://bugs.launchpad.net/bugs/1564950 [ kamal: backport to 3.16-stable: no time stamp in __prepare_send_request() ] Signed-off-by:
-
- 30 Mar, 2016 5 commits
-
-
Oliver Neukum authored
commit 8835ba4a upstream. An attack has become available which pretends to be a quirky device circumventing normal sanity checks and crashes the kernel by an insufficient number of interfaces. This patch adds a check to the code path for quirky devices. Signed-off-by:
Oliver Neukum <ONeukum@suse.com> Signed-off-by:
-
Vladis Dronov authored
commit 950336ba upstream. The ati_remote2 driver expects at least two interfaces with one endpoint each. If given malicious descriptor that specify one interface or no endpoints, it will crash in the probe function. Ensure there is at least two interfaces and one endpoint for each interface before using it. The full disclosure: http://seclists.org/bugtraq/2016/Mar/90Reported-by:
Ralf Spenneberg <ralf@spenneberg.net> Signed-off-by:
Vladis Dronov <vdronov@redhat.com> Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Moritz Muehlenhoff <jmm@inutil.org> Signed-off-by:
-
Gabriel Krisman Bertazi authored
commit 21b81716 upstream. Commit d63c7dd5 ("ipr: Fix out-of-bounds null overwrite") removed the end of line handling when storing the update_fw sysfs attribute. This changed the userpace API because it started refusing writes terminated by a line feed, which broke the update tools we already have. This patch re-adds that handling, so both a write terminated by a line feed or not can make it through with the update. Fixes: d63c7dd5 ("ipr: Fix out-of-bounds null overwrite") Signed-off-by:
Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> Cc: Insu Yun <wuninsu@gmail.com> Acked-by:
Brian King <brking@linux.vnet.ibm.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Cc: Ben Hutchings <ben@decadent.org.uk> Signed-off-by:
-
Insu Yun authored
commit d63c7dd5 upstream. Return value of snprintf is not bound by size value, 2nd argument. (https://www.kernel.org/doc/htmldocs/kernel-api/API-snprintf.html). Return value is number of printed chars, can be larger than 2nd argument. Therefore, it can write null byte out of bounds ofbuffer. Since snprintf puts null, it does not need to put additional null byte. Signed-off-by:
Insu Yun <wuninsu@gmail.com> Reviewed-by:
Shane Seymour <shane.seymour@hpe.com> Signed-off-by:
-
Paul E. McKenney authored
commit 00df35f9 upstream. Currently, smpboot_unpark_threads() is invoked before the incoming CPU has been added to the scheduler's runqueue structures. This might potentially cause the unparked kthread to run on the wrong CPU, since the correct CPU isn't fully set up yet. That causes a sporadic, hard to debug boot crash triggering on some systems, reported by Borislav Petkov, and bisected down to: 2a442c9c ("x86: Use common outgoing-CPU-notification code") This patch places smpboot_unpark_threads() in a CPU hotplug notifier with priority set so that these kthreads are unparked just after the CPU has been added to the runqueues. Reported-and-tested-by:
Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by:
-
- 29 Mar, 2016 7 commits
-
-
Vasily Kulikov authored
commit 8a5e5e02 upstream. Poison pointer values should be small enough to find a room in non-mmap'able/hardly-mmap'able space. E.g. on x86 "poison pointer space" is located starting from 0x0. Given unprivileged users cannot mmap anything below mmap_min_addr, it should be safe to use poison pointers lower than mmap_min_addr. The current poison pointer values of LIST_POISON{1,2} might be too big for mmap_min_addr values equal or less than 1 MB (common case, e.g. Ubuntu uses only 0x10000). There is little point to use such a big value given the "poison pointer space" below 1 MB is not yet exhausted. Changing it to a smaller value solves the problem for small mmap_min_addr setups. The values are suggested by Solar Designer: http://www.openwall.com/lists/oss-security/2015/05/02/6Signed-off-by:
Vasily Kulikov <segoon@openwall.com> Cc: Solar Designer <solar@openwall.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Cc: Moritz Muehlenhoff <jmm@inutil.org> Signed-off-by:
-
Takashi Iwai authored
commit 447d6275 upstream. Add some sanity check codes before actually accessing the endpoint via get_endpoint() in order to avoid the invalid access through a malformed USB descriptor. Mostly just checking bNumEndpoints, but in one place (snd_microii_spdif_default_get()), the validity of iface and altsetting index is checked as well. Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=971125Signed-off-by:
Takashi Iwai <tiwai@suse.de> Cc: Moritz Muehlenhoff <jmm@inutil.org> [ luis: backported to 3.16: adjusted context ] Signed-off-by:
-
Takashi Iwai authored
commit 0f886ca1 upstream. create_fixed_stream_quirk() may cause a NULL-pointer dereference by accessing the non-existing endpoint when a USB device with a malformed USB descriptor is used. This patch avoids it simply by adding a sanity check of bNumEndpoints before the accesses. Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=971125Signed-off-by:
-
Josh Boyer authored
commit 4ec0ef3a upstream. The iowarrior driver expects at least one valid endpoint. If given malicious descriptors that specify 0 for the number of endpoints, it will crash in the probe function. Ensure there is at least one endpoint on the interface before using it. The full report of this issue can be found here: http://seclists.org/bugtraq/2016/Mar/87Reported-by:
Josh Boyer <jwboyer@fedoraproject.org> Signed-off-by:
-
Josh Boyer authored
commit 9c6ba456 upstream. The powermate driver expects at least one valid USB endpoint in its probe function. If given malicious descriptors that specify 0 for the number of endpoints, it will crash. Validate the number of endpoints on the interface before using them. The full report for this issue can be found here: http://seclists.org/bugtraq/2016/Mar/85Reported-by:
-
David S. Miller authored
commit fbd40ea0 upstream. When an inetdev is destroyed, every address assigned to the interface is removed. And in this scenerio we do two pointless things which can be very expensive if the number of assigned interfaces is large: 1) Address promotion. We are deleting all addresses, so there is no point in doing this. 2) A full nf conntrack table purge for every address. We only need to do this once, as is already caught by the existing masq_dev_notifier so masq_inet_event() can skip this. Reported-by:
Solar Designer <solar@openwall.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Tested-by:
Cyrill Gorcunov <gorcunov@openvz.org> Cc: Moritz Muehlenhoff <jmm@inutil.org> [ luis: backported to 3.16: - file rename: nf_nat_masquerade_ipv4.c -> ipt_MASQUERADE.c ] Signed-off-by:
-
Luis Henriques authored
Signed-off-by:
-
- 24 Mar, 2016 6 commits
-
-
Steven Rostedt (Red Hat) authored
commit dc17147d upstream. Commit f3775549 ("tracepoints: Do not trace when cpu is offline") added a check to make sure that tracepoints only get called when the cpu is online, as it uses rcu_read_lock_sched() for protection. Commit 3a630178 ("tracing: generate RCU warnings even when tracepoints are disabled") added lockdep checks (including rcu checks) for events that are not enabled to catch possible RCU issues that would only be triggered if a trace event was enabled. Commit f3775549 only stopped the warnings when the trace event was enabled but did not prevent warnings if the trace event was called when disabled. To fix this, the cpu online check is moved to where the condition is added to the trace event. This will place the cpu online check in all places that it may be used now and in the future. Fixes: f3775549 ("tracepoints: Do not trace when cpu is offline") Fixes: 3a630178 ("tracing: generate RCU warnings even when tracepoints are disabled") Reported-by:
Sudeep Holla <sudeep.holla@arm.com> Tested-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
-
Jason Andryuk authored
commit a6807590 upstream. The comparisons should be >= since 0x800 and 0x80 require an additional bit to store. For the 3 byte case, the existing shift would drop off 2 more bits than intended. For the 2 byte case, there should be 5 bits bits in byte 1, and 6 bits in byte 2. Signed-off-by:
Jason Andryuk <jandryuk@gmail.com> Reviewed-by:
Laszlo Ersek <lersek@redhat.com> Cc: Peter Jones <pjones@redhat.com> Cc: Matthew Garrett <mjg59@coreos.com> Cc: "Lee, Chun-Yi" <jlee@suse.com> Signed-off-by:
Matt Fleming <matt@codeblueprint.co.uk> Signed-off-by:
-
Matt Fleming authored
commit e246eb56 upstream. Laszlo explains why this is a good idea, 'This is because the pstore filesystem can be backed by UEFI variables, and (for example) a crash might dump the last kilobytes of the dmesg into a number of pstore entries, each entry backed by a separate UEFI variable in the above GUID namespace, and with a variable name according to the above pattern. Please see "drivers/firmware/efi/efi-pstore.c". While this patch series will not prevent the user from deleting those UEFI variables via the pstore filesystem (i.e., deleting a pstore fs entry will continue to delete the backing UEFI variable), I think it would be nice to preserve the possibility for the sysadmin to delete Linux-created UEFI variables that carry portions of the crash log, *without* having to mount the pstore filesystem.' There's also no chance of causing machines to become bricked by deleting these variables, which is the whole purpose of excluding things from the whitelist. Use the LINUX_EFI_CRASH_GUID guid and a wildcard '*' for the match so that we don't have to update the string in the future if new variable name formats are created for crash dump variables. Reported-by:
Peter Jones <pjones@redhat.com> Tested-by:
-
Peter Jones authored
commit ed8b0de5 upstream. "rm -rf" is bricking some peoples' laptops because of variables being used to store non-reinitializable firmware driver data that's required to POST the hardware. These are 100% bugs, and they need to be fixed, but in the mean time it shouldn't be easy to *accidentally* brick machines. We have to have delete working, and picking which variables do and don't work for deletion is quite intractable, so instead make everything immutable by default (except for a whitelist), and make tools that aren't quite so broad-spectrum unset the immutable flag. Signed-off-by:
Lee, Chun-Yi <jlee@suse.com> Acked-by:
Matthew Garrett <mjg59@coreos.com> Signed-off-by:
-
Peter Jones authored
commit 8282f5d9 upstream. All the variables in this list so far are defined to be in the global namespace in the UEFI spec, so this just further ensures we're validating the variables we think we are. Including the guid for entries will become more important in future patches when we decide whether or not to allow deletion of variables based on presence in this list. Signed-off-by:
-
Peter Jones authored
commit 3dcb1f55 upstream. Actually translate from ucs2 to utf8 before doing the test, and then test against our other utf8 data, instead of fudging it. Signed-off-by:
-
