- 09 Sep, 2018 9 commits
-
-
Hari Bathini authored
commit 1bd6a1c4 upstream. Crash memory ranges is an array of memory ranges of the crashing kernel to be exported as a dump via /proc/vmcore file. The size of the array is set based on INIT_MEMBLOCK_REGIONS, which works alright in most cases where memblock memory regions count is less than INIT_MEMBLOCK_REGIONS value. But this count can grow beyond INIT_MEMBLOCK_REGIONS value since commit 142b45a7 ("memblock: Add array resizing support"). On large memory systems with a few DLPAR operations, the memblock memory regions count could be larger than INIT_MEMBLOCK_REGIONS value. On such systems, registering fadump results in crash or other system failures like below: task: c00007f39a290010 ti: c00000000b738000 task.ti: c00000000b738000 NIP: c000000000047df4 LR: c0000000000f9e58 CTR: c00000000010f180 REGS: c00000000b73b570 TRAP: 0300 Tainted: G L X (4.4.140+) MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22004484 XER: 20000000 CFAR: c000000000008500 DAR: 000007a450000000 DSISR: 40000000 SOFTE: 0 ... NIP [c000000000047df4] smp_send_reschedule+0x24/0x80 LR [c0000000000f9e58] resched_curr+0x138/0x160 Call Trace: resched_curr+0x138/0x160 (unreliable) check_preempt_curr+0xc8/0xf0 ttwu_do_wakeup+0x38/0x150 try_to_wake_up+0x224/0x4d0 __wake_up_common+0x94/0x100 ep_poll_callback+0xac/0x1c0 __wake_up_common+0x94/0x100 __wake_up_sync_key+0x70/0xa0 sock_def_readable+0x58/0xa0 unix_stream_sendmsg+0x2dc/0x4c0 sock_sendmsg+0x68/0xa0 ___sys_sendmsg+0x2cc/0x2e0 __sys_sendmsg+0x5c/0xc0 SyS_socketcall+0x36c/0x3f0 system_call+0x3c/0x100 as array index overflow is not checked for while setting up crash memory ranges causing memory corruption. To resolve this issue, dynamically allocate memory for crash memory ranges and resize it incrementally, in units of pagesize, on hitting array size limit. Fixes: 2df173d9 ("fadump: Initialize elfcore header and add PT_LOAD program headers.") Cc: stable@vger.kernel.org # v3.4+ Signed-off-by:
Hari Bathini <hbathini@linux.ibm.com> Reviewed-by:
Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> [mpe: Just use PAGE_SIZE directly, fixup variable placement] Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-
Gustavo A. R. Silva authored
commit 3512a18c upstream. There is a potential execution path in which function platform_get_resource() returns NULL. If this happens, we will end up having a NULL pointer dereference. Fix this by replacing devm_ioremap with devm_ioremap_resource, which has the NULL check and the memory region request. This code was detected with the help of Coccinelle. Cc: stable@vger.kernel.org Fixes: f700e84f ("mailbox: Add support for APM X-Gene platform mailbox driver") Signed-off-by:
Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by:
Jassi Brar <jaswinder.singh@linaro.org> Signed-off-by:
-
Daniel Mack authored
commit 7444a809 upstream. Prior to commit 573185cc ("mmc: core: Invoke sdio func driver's PM callbacks from the sdio bus"), the MMC core used to call into the power management functions of SDIO clients itself and removed the card if the return code was non-zero. IOW, the mmc handled errors gracefully and didn't upchain them to the pm core. Since this change, the mmc core relies on generic power management functions which treat all errors as a reason to cancel the suspend immediately. This causes suspend attempts to fail when the libertas driver is loaded. To fix this, power down the card explicitly in if_sdio_suspend() when we know we're about to lose power and return success. Also set a flag in these cases, and power up the card again in if_sdio_resume(). Fixes: 573185cc ("mmc: core: Invoke sdio func driver's PM callbacks from the sdio bus") Cc: <stable@vger.kernel.org> Signed-off-by:
Daniel Mack <daniel@zonque.org> Reviewed-by:
Chris Ball <chris@printf.net> Reviewed-by:
Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by:
Kalle Valo <kvalo@codeaurora.org> Signed-off-by:
-
Matthew Auld authored
commit c11c7bfd upstream. Operating on a zero sized GEM userptr object will lead to explosions. Fixes: 5cc9ed4b ("drm/i915: Introduce mapping of user pages into video memory (userptr) ioctl") Testcase: igt/gem_userptr_blits/input-checking Signed-off-by:
Matthew Auld <matthew.auld@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
-
Krzysztof Kozlowski authored
commit d8ffee2f upstream. Registers of DSPI should not be accessed before enabling its clock. On Toradex Colibri VF50 on Iris carrier board this could be seen during bootup as imprecise abort: Unhandled fault: imprecise external abort (0x1c06) at 0x00000000 Internal error: : 1c06 [#1] ARM Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 4.14.39-dirty #97 Hardware name: Freescale Vybrid VF5xx/VF6xx (Device Tree) Backtrace: [<804166a8>] (regmap_write) from [<80466b5c>] (dspi_probe+0x1f0/0x8dc) [<8046696c>] (dspi_probe) from [<8040107c>] (platform_drv_probe+0x54/0xb8) [<80401028>] (platform_drv_probe) from [<803ff53c>] (driver_probe_device+0x280/0x2f8) [<803ff2bc>] (driver_probe_device) from [<803ff674>] (__driver_attach+0xc0/0xc4) [<803ff5b4>] (__driver_attach) from [<803fd818>] (bus_for_each_dev+0x70/0xa4) [<803fd7a8>] (bus_for_each_dev) from [<803fee74>] (driver_attach+0x24/0x28) [<803fee50>] (driver_attach) from [<803fe980>] (bus_add_driver+0x1a0/0x218) [<803fe7e0>] (bus_add_driver) from [<803fffe8>] (driver_register+0x80/0x100) [<803fff68>] (driver_register) from [<80400fdc>] (__platform_driver_register+0x48/0x50) [<80400f94>] (__platform_driver_register) from [<8091cf7c>] (fsl_dspi_driver_init+0x1c/0x20) [<8091cf60>] (fsl_dspi_driver_init) from [<8010195c>] (do_one_initcall+0x4c/0x174) [<80101910>] (do_one_initcall) from [<80900e8c>] (kernel_init_freeable+0x144/0x1d8) [<80900d48>] (kernel_init_freeable) from [<805ff6a8>] (kernel_init+0x10/0x114) [<805ff698>] (kernel_init) from [<80107be8>] (ret_from_fork+0x14/0x2c) Cc: <stable@vger.kernel.org> Fixes: 5ee67b58 ("spi: dspi: clear SPI_SR before enable interrupt") Signed-off-by:
Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
-
Bartosz Golaszewski authored
commit 563a53f3 upstream. On non-OF systems spi->controlled_data may be NULL. This causes a NULL pointer derefence on dm365-evm. Signed-off-by:
Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by:
-
Chirantan Ekbote authored
commit d28c756c upstream. The zero-copy optimization when reading or writing large chunks of data is quite useful. However, the 9p messages created through the zero-copy write path have an incorrect message size: it should be the size of the header + size of the data being written but instead it's just the size of the header. This only works if the server ignores the size field of the message and otherwise breaks the framing of the protocol. Fix this by re-writing the message size field with the correct value. Tested by running `dd if=/dev/zero of=out bs=4k count=1` inside a virtio-9p mount. Link: http://lkml.kernel.org/r/20180717003529.114368-1-chirantan@chromium.orgSigned-off-by:
Chirantan Ekbote <chirantan@chromium.org> Reviewed-by:
Greg Kurz <groug@kaod.org> Tested-by:
Dominique Martinet <dominique.martinet@cea.fr> Signed-off-by:
-
Alexander Aring authored
commit f9c52831 upstream. This patch is necessary if case of AF_PACKET or other socket interface which I am aware of it and didn't allocated the necessary room. Reported-by:
David Palma <david.palma@ntnu.no> Reported-by:
Rabi Narayan Sahoo <rabinarayans0828@gmail.com> Cc: stable@vger.kernel.org Signed-off-by:
Alexander Aring <aring@mojatatu.com> Signed-off-by:
Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by:
-
Alexander Aring authored
commit ac74f87c upstream. This patch fixes patch add handling to take care tail and headroom for single 6lowpan frames. We need to be sure we have a skb with the right head and tailroom for single frames. This patch do it by using skb_copy_expand() if head and tailroom is not enough allocated by upper layer. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=195059Reported-by:
-
- 05 Sep, 2018 31 commits
-
-
Greg Kroah-Hartman authored
-
Daniel Rosenberg authored
This patch is against 4.9. It does not apply to master due to a large rework of ion in 4.12 which removed the affected functions altogther. 4c23cbff ("staging: android: ion: Remove import interface") Userspace can cause the kref to handles to increment arbitrarily high. Ensure it does not overflow. Signed-off-by:
Daniel Rosenberg <drosen@google.com> Signed-off-by:
-
Scott Bauer authored
commit 8f3fafc9 upstream. Like d88b6d04: "cdrom: information leak in cdrom_ioctl_media_changed()" There is another cast from unsigned long to int which causes a bounds check to fail with specially crafted input. The value is then used as an index in the slot array in cdrom_slot_status(). Signed-off-by:
Scott Bauer <scott.bauer@intel.com> Signed-off-by:
Scott Bauer <sbauer@plzdonthack.me> Cc: stable@vger.kernel.org Signed-off-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
-
H. Nikolaus Schaller authored
commit a427503e upstream. If an iio channel defines a basic property, there are duplicate entries in /sys/class/power/*/uevent. So add a check to avoid duplicates. Since all channels may be duplicates, we have to modify the related error check. Signed-off-by:
H. Nikolaus Schaller <hns@goldelico.com> Cc: stable@vger.kernel.org Fixes: e60fea79 ("power: battery: Generic battery driver using IIO") Signed-off-by:
Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by:
-
H. Nikolaus Schaller authored
commit 932d4744 upstream. We did have sporadic problems in the pinctrl framework during boot where a pin group name unexpectedly became NULL leading to a NULL dereference in strcmp. Detailled analysis of the failing cases did reveal that there were two devm allocated objects close to each other. The second one was the affected group_desc in pinmux and the first one was the psy_desc->properties buffer of the gab driver. Review of the gab code showed that the address calculation for one memcpy() is wrong. It does properties + sizeof(type) * index but C is defined to do the index multiplication already for pointer + integer additions. Hence the factor was applied twice and the memcpy() does write outside of the properties buffer. Sometimes it happened to be the pinctrl and triggered the strcmp(NULL). Anyways, it is overkill to use a memcpy() here instead of a simple assignment, which is easier to read and has less risk for wrong address calculations. So we change code to a simple assignment. If we initialize the index to the first free location, we can even remove the local variable 'properties'. This bug seems to exist right from the beginning in 3.7-rc1 in commit e60fea79 ("power: battery: Generic battery driver using IIO") Signed-off-by:
-
Dan Carpenter authored
commit 5e2e2f9f upstream. "count" needs to be signed for the error handling to work. I made "i" signed as well so they match. Fixes: 02113ba9 (PM / clk: Add support for obtaining clocks from device-tree) Cc: 4.6+ <stable@vger.kernel.org> # 4.6+ Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
-
Alberto Panizzo authored
commit a64ad008 upstream. Register, shift and mask were wrong according to datasheet. Fixes: 11551005 ("clk: rockchip: add clock controller for the RK3399") Cc: stable@vger.kernel.org Signed-off-by:
Alberto Panizzo <alberto@amarulasolutions.com> Signed-off-by:
Anthony Brandon <anthony@amarulasolutions.com> Signed-off-by:
Heiko Stuebner <heiko@sntech.de> Signed-off-by:
-
Mike Christie authored
commit 26abc916 upstream. The problem is that iscsi_login_zero_tsih_s1 sets conn->sess early in iscsi_login_set_conn_values. If the function fails later like when we alloc the idr it does kfree(sess) and leaves the conn->sess pointer set. iscsi_login_zero_tsih_s1 then returns -Exyz and we then call iscsi_target_login_sess_out and access the freed memory. This patch has iscsi_login_zero_tsih_s1 either completely setup the session or completely tear it down, so later in iscsi_target_login_sess_out we can just check for it being set to the connection. Cc: stable@vger.kernel.org Fixes: 0957627a ("iscsi-target: Fix sess allocation leak in...") Signed-off-by:
Mike Christie <mchristi@redhat.com> Acked-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
Matthew Wilcox <willy@infradead.org> Signed-off-by:
-
Bart Van Assche authored
commit 0ee223b2 upstream. A long time ago the unfortunate decision was taken to add a self-deletion attribute to the sysfs SCSI device directory. That decision was unfortunate because self-deletion is really tricky. We can't drop that attribute because widely used user space software depends on it, namely the rescan-scsi-bus.sh script. Hence this patch that avoids that writing into that attribute triggers a deadlock. See also commit 7973cbd9 ("[PATCH] add sysfs attributes to scan and delete scsi_devices"). This patch avoids that self-removal triggers the following deadlock: ====================================================== WARNING: possible circular locking dependency detected 4.18.0-rc2-dbg+ #5 Not tainted ------------------------------------------------------ modprobe/6539 is trying to acquire lock: 000000008323c4cd (kn->count#202){++++}, at: kernfs_remove_by_name_ns+0x45/0x90 but task is already holding lock: 00000000a6ec2c69 (&shost->scan_mutex){+.+.}, at: scsi_remove_host+0x21/0x150 [scsi_mod] which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&shost->scan_mutex){+.+.}: __mutex_lock+0xfe/0xc70 mutex_lock_nested+0x1b/0x20 scsi_remove_device+0x26/0x40 [scsi_mod] sdev_store_delete+0x27/0x30 [scsi_mod] dev_attr_store+0x3e/0x50 sysfs_kf_write+0x87/0xa0 kernfs_fop_write+0x190/0x230 __vfs_write+0xd2/0x3b0 vfs_write+0x101/0x270 ksys_write+0xab/0x120 __x64_sys_write+0x43/0x50 do_syscall_64+0x77/0x230 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (kn->count#202){++++}: lock_acquire+0xd2/0x260 __kernfs_remove+0x424/0x4a0 kernfs_remove_by_name_ns+0x45/0x90 remove_files.isra.1+0x3a/0x90 sysfs_remove_group+0x5c/0xc0 sysfs_remove_groups+0x39/0x60 device_remove_attrs+0x82/0xb0 device_del+0x251/0x580 __scsi_remove_device+0x19f/0x1d0 [scsi_mod] scsi_forget_host+0x37/0xb0 [scsi_mod] scsi_remove_host+0x9b/0x150 [scsi_mod] sdebug_driver_remove+0x4b/0x150 [scsi_debug] device_release_driver_internal+0x241/0x360 device_release_driver+0x12/0x20 bus_remove_device+0x1bc/0x290 device_del+0x259/0x580 device_unregister+0x1a/0x70 sdebug_remove_adapter+0x8b/0xf0 [scsi_debug] scsi_debug_exit+0x76/0xe8 [scsi_debug] __x64_sys_delete_module+0x1c1/0x280 do_syscall_64+0x77/0x230 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&shost->scan_mutex); lock(kn->count#202); lock(&shost->scan_mutex); lock(kn->count#202); *** DEADLOCK *** 2 locks held by modprobe/6539: #0: 00000000efaf9298 (&dev->mutex){....}, at: device_release_driver_internal+0x68/0x360 #1: 00000000a6ec2c69 (&shost->scan_mutex){+.+.}, at: scsi_remove_host+0x21/0x150 [scsi_mod] stack backtrace: CPU: 10 PID: 6539 Comm: modprobe Not tainted 4.18.0-rc2-dbg+ #5 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014 Call Trace: dump_stack+0xa4/0xf5 print_circular_bug.isra.34+0x213/0x221 __lock_acquire+0x1a7e/0x1b50 lock_acquire+0xd2/0x260 __kernfs_remove+0x424/0x4a0 kernfs_remove_by_name_ns+0x45/0x90 remove_files.isra.1+0x3a/0x90 sysfs_remove_group+0x5c/0xc0 sysfs_remove_groups+0x39/0x60 device_remove_attrs+0x82/0xb0 device_del+0x251/0x580 __scsi_remove_device+0x19f/0x1d0 [scsi_mod] scsi_forget_host+0x37/0xb0 [scsi_mod] scsi_remove_host+0x9b/0x150 [scsi_mod] sdebug_driver_remove+0x4b/0x150 [scsi_debug] device_release_driver_internal+0x241/0x360 device_release_driver+0x12/0x20 bus_remove_device+0x1bc/0x290 device_del+0x259/0x580 device_unregister+0x1a/0x70 sdebug_remove_adapter+0x8b/0xf0 [scsi_debug] scsi_debug_exit+0x76/0xe8 [scsi_debug] __x64_sys_delete_module+0x1c1/0x280 do_syscall_64+0x77/0x230 entry_SYSCALL_64_after_hwframe+0x49/0xbe See also https://www.mail-archive.com/linux-scsi@vger.kernel.org/msg54525.html. Fixes: ac0ece91 ("scsi: use device_remove_file_self() instead of device_schedule_callback()") Signed-off-by:
Bart Van Assche <bart.vanassche@wdc.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by:
Tejun Heo <tj@kernel.org> Cc: Johannes Thumshirn <jthumshirn@suse.de> Cc: <stable@vger.kernel.org> Signed-off-by:
-
Bart Van Assche authored
commit 2afc9166 upstream. Introduce these two functions and export them such that the next patch can add calls to these functions from the SCSI core. Signed-off-by:
-
Paul Burton authored
commit 690d9163 upstream. Some versions of GCC suboptimally generate calls to the __multi3() intrinsic for MIPS64r6 builds, resulting in link failures due to the missing function: LD vmlinux.o MODPOST vmlinux.o kernel/bpf/verifier.o: In function `kmalloc_array': include/linux/slab.h:631: undefined reference to `__multi3' fs/select.o: In function `kmalloc_array': include/linux/slab.h:631: undefined reference to `__multi3' ... We already have a workaround for this in which we provide the instrinsic, but we do so selectively for GCC 7 only. Unfortunately the issue occurs with older GCC versions too - it has been observed with both GCC 5.4.0 & GCC 6.4.0. MIPSr6 support was introduced in GCC 5, so all major GCC versions prior to GCC 8 are affected and we extend our workaround accordingly to all MIPS64r6 builds using GCC versions older than GCC 8. Signed-off-by:
Paul Burton <paul.burton@mips.com> Reported-by:
Vladimir Kondratiev <vladimir.kondratiev@intel.com> Fixes: ebabcf17 ("MIPS: Implement __multi3 for GCC7 MIPS64r6 builds") Patchwork: https://patchwork.linux-mips.org/patch/20297/ Cc: James Hogan <jhogan@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: stable@vger.kernel.org # 4.15+ Signed-off-by:
-
Maciej W. Rozycki authored
commit f5958b4c upstream. Use the `unsigned long' rather than `__u32' type for DSP accumulator registers, like with the regular MIPS multiply/divide accumulator and general-purpose registers, as all are 64-bit in 64-bit implementations and using a 32-bit data type leads to contents truncation on context saving. Update `arch_ptrace' and `compat_arch_ptrace' accordingly, removing casts that are similarly not used with multiply/divide accumulator or general-purpose register accesses. Signed-off-by:
Maciej W. Rozycki <macro@mips.com> Signed-off-by:
-
Masami Hiramatsu authored
commit f2a3ab36 upstream. Since the blacklist and list files on debugfs indicates a sensitive address information to reader, it should be restricted to the root user. Suggested-by:
Thomas Richter <tmricht@linux.ibm.com> Suggested-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Howells <dhowells@redhat.com> Cc: David S . Miller <davem@davemloft.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Jon Medhurst <tixy@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tobin C . Harding <me@tobin.cc> Cc: Will Deacon <will.deacon@arm.com> Cc: acme@kernel.org Cc: akpm@linux-foundation.org Cc: brueckner@linux.vnet.ibm.com Cc: linux-arch@vger.kernel.org Cc: rostedt@goodmis.org Cc: schwidefsky@de.ibm.com Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/lkml/152491890171.9916.5183693615601334087.stgit@devboxSigned-off-by:
-
Sebastian Ott authored
commit 866f3576 upstream. During interrupt setup we allocate interrupt vectors, walk the list of msi descriptors, and fill in the message data. Requesting more interrupts than supported on s390 can lead to an out of bounds access. When we restrict the number of interrupts we should also stop walking the msi list after all supported interrupts are handled. Cc: stable@vger.kernel.org Signed-off-by:
Sebastian Ott <sebott@linux.ibm.com> Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
-
Martin Schwidefsky authored
commit fb7d7518 upstream. The numa_init_early initcall sets the node_to_cpumask_map[0] to the full cpu_possible_mask. Unfortunately this early_initcall is too late, the NUMA setup for numa=emu is done even earlier. The order of calls is numa_setup() -> emu_update_cpu_topology(), then the early_initcalls(), followed by sched_init_domains(). Starting with git commit 051f3ca0 "sched/topology: Introduce NUMA identity node sched domain" the incorrect node_to_cpumask_map[0] really screws up the domain setup and the kernel panics with the follow oops: Cc: <stable@vger.kernel.org> # v4.15+ Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
-
Julian Wiedmann authored
commit 64e03ff7 upstream. When allocating a new AOB fails, handle_outbound() is still capable of transmitting the selected buffer (just without async completion). But if a previous transfer on this queue slot used async completion, its sbal_state flags field is still set to QDIO_OUTBUF_STATE_FLAG_PENDING. So when the upper layer driver sees this stale flag, it expects an async completion that never happens. Fix this by unconditionally clearing the flags field. Fixes: 104ea556 ("qdio: support asynchronous delivery of storage blocks") Cc: <stable@vger.kernel.org> #v3.2+ Signed-off-by:
Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by:
-
Martin Schwidefsky authored
commit 26f84384 upstream. For machines without the exrl instruction the BFP jit generates code that uses an "br %r1" instruction located in the lowcore page. Unfortunately there is a cut & paste error that puts an additional "larl %r1,.+14" instruction in the code that clobbers the branch target address in %r1. Remove the larl instruction. Cc: <stable@vger.kernel.org> # v4.17+ Fixes: de5cb6eb ("s390: use expoline thunks in the BPF JIT") Signed-off-by:
-
Jann Horn authored
commit f12d11c5 upstream. Reset the KASAN shadow state of the task stack before rewinding RSP. Without this, a kernel oops will leave parts of the stack poisoned, and code running under do_exit() can trip over such poisoned regions and cause nonsensical false-positive KASAN reports about stack-out-of-bounds bugs. This does not wipe the exception stacks; if an oops happens on an exception stack, it might result in random KASAN false-positives from other tasks afterwards. This is probably relatively uninteresting, since if the kernel oopses on an exception stack, there are most likely bigger things to worry about. It'd be more interesting if vmapped stacks and KASAN were compatible, since then handle_stack_overflow() would oops from exception stack context. Fixes: 2deb4be2 ("x86/dumpstack: When OOPSing, rewind the stack before do_exit()") Signed-off-by:
Jann Horn <jannh@google.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Acked-by:
Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: kasan-dev@googlegroups.com Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20180828184033.93712-1-jannh@google.comSigned-off-by:
-
Andi Kleen authored
commit cc51e542 upstream. On Nehalem and newer core CPUs the CPU cache internally uses 44 bits physical address space. The L1TF workaround is limited by this internal cache address width, and needs to have one bit free there for the mitigation to work. Older client systems report only 36bit physical address space so the range check decides that L1TF is not mitigated for a 36bit phys/32GB system with some memory holes. But since these actually have the larger internal cache width this warning is bogus because it would only really be needed if the system had more than 43bits of memory. Add a new internal x86_cache_bits field. Normally it is the same as the physical bits field reported by CPUID, but for Nehalem and newerforce it to be at least 44bits. Change the L1TF memory size warning to use the new cache_bits field to avoid bogus warnings and remove the bogus comment about memory size. Fixes: 17dbca11 ("x86/speculation/l1tf: Add sysfs reporting for l1tf") Reported-by:
George Anchev <studio@anchev.net> Reported-by:
Christopher Snowhill <kode54@gmail.com> Signed-off-by:
Andi Kleen <ak@linux.intel.com> Signed-off-by:
-
Andi Kleen authored
commit 1ab534e8 upstream. The check for Spectre microcodes does not check for family 6, only the model numbers. Add a family 6 check to avoid ambiguity with other families. Fixes: a5b29663 ("x86/cpufeature: Blacklist SPEC_CTRL/PRED_CMD on early Spectre v2 microcodes") Signed-off-by:
-
Nick Desaulniers authored
commit 1f59a458 upstream. This should have been marked extern inline in order to pick up the out of line definition in arch/x86/kernel/irqflags.S. Fixes: 208cbb32 ("x86/irqflags: Provide a declaration for native_save_fl") Reported-by:
Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by:
Nick Desaulniers <ndesaulniers@google.com> Signed-off-by:
Juergen Gross <jgross@suse.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20180827214011.55428-1-ndesaulniers@google.comSigned-off-by:
-
Dan Carpenter authored
commit 19da44cd upstream. The info->groups[] array is allocated in imx1_pinctrl_parse_dt(). It has info->ngroups elements. Thus the > here should be >= to prevent reading one element beyond the end of the array. Cc: stable@vger.kernel.org Fixes: 30612cd9 ("pinctrl: imx1 core driver") Signed-off-by:
Uwe Kleine-König <u.kleine-könig@pengutronix.de> Acked-by:
Dong Aisheng <Aisheng.dong@nxp.com> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
-
Gustavo A. R. Silva authored
commit ae1c696a upstream. There is a potential execution path in which function platform_get_resource() returns NULL. If this happens, we will end up having a NULL pointer dereference. Fix this by replacing devm_ioremap with devm_ioremap_resource, which has the NULL check and the memory region request. This code was detected with the help of Coccinelle. Cc: stable@vger.kernel.org Fixes: 2bd8d1d5 ("ASoC: sirf: Add audio usp interface driver") Signed-off-by:
-
Jerome Brunet authored
commit 4febced1 upstream. When merging codec formats, dpcm_runtime_base_format() should skip the codecs which are not supporting the current stream direction. At the moment, if a BE link has more than one codec, and only one of these codecs has no capture DAI, it becomes impossible to start a capture stream because the merged format would be 0. Skipping invalid codec DAI solves the problem. Fixes: b073ed4e ("ASoC: soc-pcm: DPCM cares BE format") Signed-off-by:
Jerome Brunet <jbrunet@baylibre.com> Signed-off-by:
-
Michael Buesch authored
commit 2aa650d1 upstream. strncpy might not NUL-terminate the string, if the name equals the buffer size. Use strlcpy instead. Signed-off-by:
Michael Buesch <m@bues.ch> Cc: stable@vger.kernel.org Signed-off-by:
-
Michael Buesch authored
commit 4d77a89e upstream. strncpy might not NUL-terminate the string, if the name equals the buffer size. Use strlcpy instead. Signed-off-by:
-
Mikulas Patocka authored
commit 09a00abe upstream. We must use kzalloc when allocating the fb_deferred_io structure. Otherwise, the field first_io is undefined and it causes a crash. Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Cc: stable@vger.kernel.org Signed-off-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
-
Mikulas Patocka authored
commit 542bb978 upstream. Allocations larger than PAGE_ALLOC_COSTLY_ORDER are unreliable and they may fail anytime. This patch fixes the udl kms driver so that when a large alloactions fails, it tries to do multiple smaller allocations. Signed-off-by:
-
Mikulas Patocka authored
commit 8456b99c upstream. If we leave urbs around, it causes not only leak, but also memory corruption. This patch fixes the function udl_free_urb_list, so that it always waits for all urbs that are in progress. Signed-off-by:
-
Kirill Tkhai authored
commit 109728cc upstream. The above error path returns with page unlocked, so this place seems also to behave the same. Fixes: f8dbdf81 ("fuse: rework fuse_readpages()") Signed-off-by:
Kirill Tkhai <ktkhai@virtuozzo.com> Signed-off-by:
Miklos Szeredi <mszeredi@redhat.com> Signed-off-by:
-
Miklos Szeredi authored
commit e8f3bd77 upstream. syzbot is hitting NULL pointer dereference at process_init_reply(). This is because deactivate_locked_super() is called before response for initial request is processed. Fix this by aborting and waiting for all requests (including FUSE_INIT) before resetting fc->sb. Original patch by Tetsuo Handa <penguin-kernel@I-love.SKAURA.ne.jp>. Reported-by:
syzbot <syzbot+b62f08f4d5857755e3bc@syzkaller.appspotmail.com> Fixes: e27c9d38 ("fuse: fuse: add time_gran to INIT_OUT") Cc: <stable@vger.kernel.org> # v3.19 Signed-off-by:
-
