- 19 Apr, 2018 18 commits
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Adrian Hunter authored
commit 91d29b28 upstream. timestamp_insn_cnt is used to estimate the timestamp based on the number of instructions since the last known timestamp. If the estimate is not accurate enough decoding might not be correctly synchronized with side-band events causing more trace errors. However there are always timestamps following an overflow, so the estimate is not needed and can indeed result in more errors. Suppress the estimate by setting timestamp_insn_cnt to zero. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-5-git-send-email-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Adrian Hunter authored
commit 1c196a6c upstream. When a TIP packet is expected but there is a different packet, it is an error. However the unexpected packet might be something important like a TSC packet, so after the error, it is necessary to continue from there, rather than the next packet. That is achieved by setting pkt_step to zero. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-4-git-send-email-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Adrian Hunter authored
commit 63d8e38f upstream. sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Adrian Hunter authored
commit 117db4b2 upstream. Overlap detection was not not updating the buffer's 'consecutive' flag. Marking buffers consecutive has the advantage that decoding begins from the start of the buffer instead of the first PSB. Fix overlap detection to identify consecutive buffers correctly. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-2-git-send-email-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Nicholas Piggin authored
commit 19ce7909 upstream. This crashes with a "Bad real address for load" attempting to load from the vmalloc region in realmode (faulting address is in DAR). Oops: Bad interrupt in KVM entry/exit code, sig: 6 [#1] LE SMP NR_CPUS=2048 NUMA PowerNV CPU: 53 PID: 6582 Comm: qemu-system-ppc Not tainted 4.16.0-01530-g43d1859f0994 NIP: c0000000000155ac LR: c0000000000c2430 CTR: c000000000015580 REGS: c000000fff76dd80 TRAP: 0200 Not tainted (4.16.0-01530-g43d1859f0994) MSR: 9000000000201003 <SF,HV,ME,RI,LE> CR: 48082222 XER: 00000000 CFAR: 0000000102900ef0 DAR: d00017fffd941a28 DSISR: 00000040 SOFTE: 3 NIP [c0000000000155ac] perf_trace_tlbie+0x2c/0x1a0 LR [c0000000000c2430] do_tlbies+0x230/0x2f0 I suspect the reason is the per-cpu data is not in the linear chunk. This could be restored if that was able to be fixed, but for now, just remove the tracepoints. Fixes: 0428491c ("powerpc/mm: Trace tlbie(l) instructions") Cc: stable@vger.kernel.org # v4.13+ Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Dexuan Cui authored
commit 021ad274 upstream. When we hot-remove the device, we first receive a PCI_EJECT message and then receive a PCI_BUS_RELATIONS message with bus_rel->device_count == 0. The first message is offloaded to hv_eject_device_work(), and the second is offloaded to pci_devices_present_work(). Both the paths can be running list_del(&hpdev->list_entry), causing general protection fault, because system_wq can run them concurrently. The patch eliminates the race condition. Since access to present/eject work items is serialized, we do not need the hbus->enum_sem anymore, so remove it. Fixes: 4daace0d ("PCI: hv: Add paravirtual PCI front-end for Microsoft Hyper-V VMs") Link: https://lkml.kernel.org/r/KL1P15301MB00064DA6B4D221123B5241CFBFD70@KL1P15301MB0006.APCP153.PROD.OUTLOOK.COMTested-by: Adrian Suhov <v-adsuho@microsoft.com> Tested-by: Chris Valean <v-chvale@microsoft.com> Signed-off-by: Dexuan Cui <decui@microsoft.com> [lorenzo.pieralisi@arm.com: squashed semaphore removal patch] Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Acked-by: Haiyang Zhang <haiyangz@microsoft.com> Cc: <stable@vger.kernel.org> # v4.6+ Cc: Vitaly Kuznetsov <vkuznets@redhat.com> Cc: Jack Morgenstein <jackm@mellanox.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Dexuan Cui authored
commit 238064f1 upstream. The pci-hyperv driver's channel callback hv_pci_onchannelcallback() is not really a hot path, so we don't need to mark it as a perf_device, meaning with this patch all HV_PCIE channels' target_cpu will be CPU0. Signed-off-by: Dexuan Cui <decui@microsoft.com> Cc: stable@vger.kernel.org Cc: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Helge Deller authored
commit d5654e15 upstream. Make sure that the HPMC (High Priority Machine Check) handler is 16-byte aligned and that it's length in the IVT is a multiple of 16 bytes. Otherwise PDC may decide not to call the HPMC crash handler. Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Helge Deller authored
commit 615b2665 upstream. As found by the ubsan checker, the value of the 'index' variable can be out of range for the bc[] array: UBSAN: Undefined behaviour in arch/parisc/kernel/drivers.c:655:21 index 6 is out of range for type 'char [6]' Backtrace: [<104fa850>] __ubsan_handle_out_of_bounds+0x68/0x80 [<1019d83c>] check_parent+0xc0/0x170 [<1019d91c>] descend_children+0x30/0x6c [<1059e164>] device_for_each_child+0x60/0x98 [<1019cd54>] parse_tree_node+0x40/0x54 [<1019d86c>] check_parent+0xf0/0x170 [<1019d91c>] descend_children+0x30/0x6c [<1059e164>] device_for_each_child+0x60/0x98 [<1019d938>] descend_children+0x4c/0x6c [<1059e164>] device_for_each_child+0x60/0x98 [<1019cd54>] parse_tree_node+0x40/0x54 [<1019cffc>] hwpath_to_device+0xa4/0xc4 Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Kieran Bingham authored
commit 613928e8 upstream. To allow dual pipelines utilising two WPF entities when available, the VSP was updated to support header-mode display list in continuous pipelines. A small bug in the status check of the command register causes the second pipeline to be directly afflicted by the running of the first; appearing as a perceived performance issue with stuttering display. Fix the vsp1_dl_list_hw_update_pending() call to ensure that the read comparison corresponds to the correct pipeline. Fixes: eaf4bfad ("v4l: vsp1: Add support for header display lists in continuous mode") Cc: "Stable v4.14+" <stable@vger.kernel.org> Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Mauro Carvalho Chehab authored
commit 85ea29f1 upstream. At put_v4l2_window32(), it tries to access kp->clips. However, kp points to an userspace pointer. So, it should be obtained via get_user(), otherwise it can OOPS: vivid-000: ================== END STATUS ================== BUG: unable to handle kernel paging request at 00000000fffb18e0 IP: [<ffffffffc05468d9>] __put_v4l2_format32+0x169/0x220 [videodev] PGD 3f5776067 PUD 3f576f067 PMD 3f5769067 PTE 800000042548f067 Oops: 0001 [#1] SMP Modules linked in: vivid videobuf2_vmalloc videobuf2_memops v4l2_dv_timings videobuf2_core v4l2_common videodev media xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack tun bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables bluetooth rfkill binfmt_misc snd_hda_codec_hdmi i915 snd_hda_intel snd_hda_controller snd_hda_codec intel_rapl x86_pkg_temp_thermal snd_hwdep intel_powerclamp snd_pcm coretemp snd_seq_midi kvm_intel kvm snd_seq_midi_event snd_rawmidi i2c_algo_bit drm_kms_helper snd_seq drm crct10dif_pclmul e1000e snd_seq_device crc32_pclmul snd_timer ghash_clmulni_intel snd mei_me mei ptp pps_core soundcore lpc_ich video crc32c_intel [last unloaded: media] CPU: 2 PID: 28332 Comm: v4l2-compliance Not tainted 3.18.102+ #107 Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0364.2017.0511.0949 05/11/2017 task: ffff8804293f8000 ti: ffff8803f5640000 task.ti: ffff8803f5640000 RIP: 0010:[<ffffffffc05468d9>] [<ffffffffc05468d9>] __put_v4l2_format32+0x169/0x220 [videodev] RSP: 0018:ffff8803f5643e28 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000fffb1ab4 RDX: 00000000fffb1a68 RSI: 00000000fffb18d8 RDI: 00000000fffb1aa8 RBP: ffff8803f5643e48 R08: 0000000000000001 R09: ffff8803f54b0378 R10: 0000000000000000 R11: 0000000000000168 R12: 00000000fffb18c0 R13: 00000000fffb1a94 R14: 00000000fffb18c8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff880456d00000(0063) knlGS:00000000f7100980 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000fffb18e0 CR3: 00000003f552b000 CR4: 00000000003407e0 Stack: 00000000fffb1a94 00000000c0cc5640 0000000000000056 ffff8804274f3600 ffff8803f5643ed0 ffffffffc0547e16 0000000000000003 ffff8803f5643eb0 ffffffff81301460 ffff88009db44b01 ffff880441942520 ffff8800c0d05640 Call Trace: [<ffffffffc0547e16>] v4l2_compat_ioctl32+0x12d6/0x1b1d [videodev] [<ffffffff81301460>] ? file_has_perm+0x70/0xc0 [<ffffffff81252a2c>] compat_SyS_ioctl+0xec/0x1200 [<ffffffff8173241a>] sysenter_dispatch+0x7/0x21 Code: 00 00 48 8b 80 48 c0 ff ff 48 83 e8 38 49 39 c6 0f 87 2b ff ff ff 49 8d 45 1c e8 a3 ce e3 c0 85 c0 0f 85 1a ff ff ff 41 8d 40 ff <4d> 8b 64 24 20 41 89 d5 48 8d 44 40 03 4d 8d 34 c4 eb 15 0f 1f RIP [<ffffffffc05468d9>] __put_v4l2_format32+0x169/0x220 [videodev] RSP <ffff8803f5643e28> CR2: 00000000fffb18e0 Tested with vivid driver on Kernel v3.18.102. Same bug happens upstream too: BUG: KASAN: user-memory-access in __put_v4l2_format32+0x98/0x4d0 [videodev] Read of size 8 at addr 00000000ffe48400 by task v4l2-compliance/8713 CPU: 0 PID: 8713 Comm: v4l2-compliance Not tainted 4.16.0-rc4+ #108 Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0364.2017.0511.0949 05/11/2017 Call Trace: dump_stack+0x5c/0x7c kasan_report+0x164/0x380 ? __put_v4l2_format32+0x98/0x4d0 [videodev] __put_v4l2_format32+0x98/0x4d0 [videodev] v4l2_compat_ioctl32+0x1aec/0x27a0 [videodev] ? __fsnotify_inode_delete+0x20/0x20 ? __put_v4l2_format32+0x4d0/0x4d0 [videodev] compat_SyS_ioctl+0x646/0x14d0 ? do_ioctl+0x30/0x30 do_fast_syscall_32+0x191/0x3f4 entry_SYSENTER_compat+0x6b/0x7a ================================================================== Disabling lock debugging due to kernel taint BUG: unable to handle kernel paging request at 00000000ffe48400 IP: __put_v4l2_format32+0x98/0x4d0 [videodev] PGD 3a22fb067 P4D 3a22fb067 PUD 39b6f0067 PMD 39b6f1067 PTE 80000003256af067 Oops: 0001 [#1] SMP KASAN Modules linked in: vivid videobuf2_vmalloc videobuf2_dma_contig videobuf2_memops v4l2_tpg v4l2_dv_timings videobuf2_v4l2 videobuf2_common v4l2_common videodev xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack libcrc32c tun bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables bluetooth rfkill ecdh_generic binfmt_misc snd_hda_codec_hdmi intel_rapl x86_pkg_temp_thermal intel_powerclamp i915 coretemp snd_hda_intel snd_hda_codec kvm_intel snd_hwdep snd_hda_core kvm snd_pcm irqbypass crct10dif_pclmul crc32_pclmul snd_seq_midi ghash_clmulni_intel snd_seq_midi_event i2c_algo_bit intel_cstate snd_rawmidi intel_uncore snd_seq drm_kms_helper e1000e snd_seq_device snd_timer intel_rapl_perf drm ptp snd mei_me mei lpc_ich pps_core soundcore video crc32c_intel CPU: 0 PID: 8713 Comm: v4l2-compliance Tainted: G B 4.16.0-rc4+ #108 Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0364.2017.0511.0949 05/11/2017 RIP: 0010:__put_v4l2_format32+0x98/0x4d0 [videodev] RSP: 0018:ffff8803b9be7d30 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff8803ac983e80 RCX: ffffffff8cd929f2 RDX: 1ffffffff1d0a149 RSI: 0000000000000297 RDI: 0000000000000297 RBP: 00000000ffe485c0 R08: fffffbfff1cf5123 R09: ffffffff8e7a8948 R10: 0000000000000001 R11: fffffbfff1cf5122 R12: 00000000ffe483e0 R13: 00000000ffe485c4 R14: ffff8803ac985918 R15: 00000000ffe483e8 FS: 0000000000000000(0000) GS:ffff880407400000(0063) knlGS:00000000f7a46980 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000ffe48400 CR3: 00000003a83f2003 CR4: 00000000003606f0 Call Trace: v4l2_compat_ioctl32+0x1aec/0x27a0 [videodev] ? __fsnotify_inode_delete+0x20/0x20 ? __put_v4l2_format32+0x4d0/0x4d0 [videodev] compat_SyS_ioctl+0x646/0x14d0 ? do_ioctl+0x30/0x30 do_fast_syscall_32+0x191/0x3f4 entry_SYSENTER_compat+0x6b/0x7a Code: 4c 89 f7 4d 8d 7c 24 08 e8 e6 a4 69 cb 48 8b 83 98 1a 00 00 48 83 e8 10 49 39 c7 0f 87 9d 01 00 00 49 8d 7c 24 20 e8 c8 a4 69 cb <4d> 8b 74 24 20 4c 89 ef 4c 89 fe ba 10 00 00 00 e8 23 d9 08 cc RIP: __put_v4l2_format32+0x98/0x4d0 [videodev] RSP: ffff8803b9be7d30 CR2: 00000000ffe48400 cc: stable@vger.kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Phil Elwell authored
[ Upstream commit 4bfc3380 ] lan78xx_read_otp tries to return -EINVAL in the event of invalid OTP content, but the value gets overwritten before it is returned and the read goes ahead anyway. Make the read conditional as it should be and preserve the error code. Fixes: 55d7de9d ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") Signed-off-by: Phil Elwell <phil@raspberrypi.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Eric Auger authored
[ Upstream commit 7ced6c98 ] vhost_copy_to_user is used to copy vring used elements to userspace. We should use VHOST_ADDR_USED instead of VHOST_ADDR_DESC. Fixes: f8894913 ("vhost: introduce O(1) vq metadata cache") Signed-off-by: Eric Auger <eric.auger@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Stefan Hajnoczi authored
[ Upstream commit d14d2b78 ] Commit d65026c6 ("vhost: validate log when IOTLB is enabled") introduced a regression. The logic was originally: if (vq->iotlb) return 1; return A && B; After the patch the short-circuit logic for A was inverted: if (A || vq->iotlb) return A; return B; This patch fixes the regression by rewriting the checks in the obvious way, no longer returning A when vq->iotlb is non-NULL (which is hard to understand). Reported-by: syzbot+65a84dde0214b0387ccd@syzkaller.appspotmail.com Cc: Jason Wang <jasowang@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tejaswi Tanikella authored
[ Upstream commit 3f01ddb9 ] On receiving a packet the state index points to the rstate which must be used to fill up IP and TCP headers. But if the state index points to a rstate which is unitialized, i.e. filled with zeros, it gets stuck in an infinite loop inside ip_fast_csum trying to compute the ip checsum of a header with zero length. 89.666953: <2> [<ffffff9dd3e94d38>] slhc_uncompress+0x464/0x468 89.666965: <2> [<ffffff9dd3e87d88>] ppp_receive_nonmp_frame+0x3b4/0x65c 89.666978: <2> [<ffffff9dd3e89dd4>] ppp_receive_frame+0x64/0x7e0 89.666991: <2> [<ffffff9dd3e8a708>] ppp_input+0x104/0x198 89.667005: <2> [<ffffff9dd3e93868>] pppopns_recv_core+0x238/0x370 89.667027: <2> [<ffffff9dd4428fc8>] __sk_receive_skb+0xdc/0x250 89.667040: <2> [<ffffff9dd3e939e4>] pppopns_recv+0x44/0x60 89.667053: <2> [<ffffff9dd4426848>] __sock_queue_rcv_skb+0x16c/0x24c 89.667065: <2> [<ffffff9dd4426954>] sock_queue_rcv_skb+0x2c/0x38 89.667085: <2> [<ffffff9dd44f7358>] raw_rcv+0x124/0x154 89.667098: <2> [<ffffff9dd44f7568>] raw_local_deliver+0x1e0/0x22c 89.667117: <2> [<ffffff9dd44c8ba0>] ip_local_deliver_finish+0x70/0x24c 89.667131: <2> [<ffffff9dd44c92f4>] ip_local_deliver+0x100/0x10c ./scripts/faddr2line vmlinux slhc_uncompress+0x464/0x468 output: ip_fast_csum at arch/arm64/include/asm/checksum.h:40 (inlined by) slhc_uncompress at drivers/net/slip/slhc.c:615 Adding a variable to indicate if the current rstate is initialized. If such a packet arrives, move to toss state. Signed-off-by: Tejaswi Tanikella <tejaswit@codeaurora.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ka-Cheong Poon authored
[ Upstream commit a43cced9 ] rds_sendmsg() calls rds_send_mprds_hash() to find a c_path to use to send a message. Suppose the RDS connection is not yet up. In rds_send_mprds_hash(), it does if (conn->c_npaths == 0) wait_event_interruptible(conn->c_hs_waitq, (conn->c_npaths != 0)); If it is interrupted before the connection is set up, rds_send_mprds_hash() will return a non-zero hash value. Hence rds_sendmsg() will use a non-zero c_path to send the message. But if the RDS connection ends up to be non-MP capable, the message will be lost as only the zero c_path can be used. Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bassem Boubaker authored
[ Upstream commit 53765341 ] The Cinterion AHS8 is a 3G device with one embedded WWAN interface using cdc_ether as a driver. The modem is controlled via AT commands through the exposed TTYs. AT+CGDCONT write command can be used to activate or deactivate a WWAN connection for a PDP context defined with the same command. UE supports one WWAN adapter. Signed-off-by: Bassem Boubaker <bassem.boubaker@actia.fr> Acked-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Jozsef Kadlecsik authored
commit f998b6b1 upstream. Patch "netfilter: ipset: use nfnl_mutex_is_locked" is added the real mutex locking check, which revealed the missing locking in ip_set_net_exit(). Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Reported-by: syzbot+36b06f219f2439fe62e1@syzkaller.appspotmail.com Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 12 Apr, 2018 22 commits
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Greg Kroah-Hartman authored
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Moshe Shemesh authored
[ Upstream commit 461d5f1b ] mlx4_delete_all_resources_for_slave in resource tracker should free all memory allocated for a slave. While releasing memory of fs_rule, it misses releasing memory of fs_rule->mirr_mbox. Fixes: 78efed27 ('net/mlx4_core: Support mirroring VF DMFS rules on both ports') Signed-off-by: Moshe Shemesh <moshe@mellanox.com> Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Jason Wang authored
[ Upstream commit aaa3149b ] We try to hold TX virtqueue mutex in vhost_net_rx_peek_head_len() after RX virtqueue mutex is held in handle_rx(). This requires an appropriate lock nesting notation to calm down deadlock detector. Fixes: 03088137 ("vhost_net: basic polling support") Reported-by: syzbot+7f073540b1384a614e09@syzkaller.appspotmail.com Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Xin Long authored
[ Upstream commit 982cf3b3 ] The same fix as in 'bonding: move dev_mc_sync after master_upper_dev_link in bond_enslave' is needed for team driver. The panic can be reproduced easily: ip link add team1 type team ip link set team1 up ip link add link team1 vlan1 type vlan id 80 ip link set vlan1 master team1 Fixes: cb41c997 ("team: team should sync the port's uc/mc addrs when add a port") Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Xin Long authored
[ Upstream commit 6174a30d ] Prior to this patch, when one packet is hashed into path [1] (hash <= nh_upper_bound) and it's neigh is dead, it will try path [2]. However, if path [2]'s neigh is alive but it's hash > nh_upper_bound, it will not return this alive path. This packet will never be sent even if path [2] is alive. 3.3.3.1/24: nexthop via 1.1.1.254 dev eth1 weight 1 <--[1] (dead neigh) nexthop via 2.2.2.254 dev eth2 weight 1 <--[2] With sysctl_fib_multipath_use_neigh set is supposed to find an available path respecting to the l3/l4 hash. But if there is no available route with this hash, it should at least return an alive route even with other hash. This patch is to fix it by processing fib_multipath_use_neigh earlier than the hash check, so that it will at least return an alive route if there is when fib_multipath_use_neigh is enabled. It's also compatible with before when there are alive routes with the l3/l4 hash. Fixes: a6db4494 ("net: ipv4: Consider failed nexthops in multipath routes") Reported-by: Jianlin Shi <jishi@redhat.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Jason Wang authored
[ Upstream commit d65026c6 ] Vq log_base is the userspace address of bitmap which has nothing to do with IOTLB. So it needs to be validated unconditionally otherwise we may try use 0 as log_base which may lead to pin pages that will lead unexpected result (e.g trigger BUG_ON() in set_bit_to_user()). Fixes: 6b1e6cc7 ("vhost: new device IOTLB API") Reported-by: syzbot+6304bf97ef436580fede@syzkaller.appspotmail.com Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Roi Dayan authored
[ Upstream commit 4246f698 ] Increase representor netdev RQ size to avoid dropped packets. The current size (two) is just too small to keep up with conventional slow path traffic patterns. Also match the SQ size to the RQ size. Fixes: cb67b832 ("net/mlx5e: Introduce SRIOV VF representors") Signed-off-by: Roi Dayan <roid@mellanox.com> Reviewed-by: Paul Blakey <paulb@mellanox.com> Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Eran Ben Elisha authored
[ Upstream commit 6e8814ce ] Global pause and PFC configuration should be mutually exclusive (i.e. only one of them at most can be set). However, once PFC was turned off, driver automatically turned Global pause on. This is a bug. Fix the driver behaviour to turn off PFC/Global once the user turned the other on. This also fixed a weird behaviour that at a current time, the profile had both PFC and global pause configuration turned on, which is Hardware-wise impossible and caused returning false positive indication to query tools. In addition, fix error code when setting global pause or PFC to change metadata only upon successful change. Also, removed useless debug print. Fixes: af7d5185 ("net/mlx4_en: Add DCB PFC support through CEE netlink commands") Fixes: c27a02cd ("mlx4_en: Add driver for Mellanox ConnectX 10GbE NIC") Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Dave Watson authored
[ Upstream commit cd00edc1 ] strp_parser_err is called with a negative code everywhere, which then calls abort_parser with a negative code. strp_msg_timeout calls abort_parser directly with a positive code. Negate ETIMEDOUT to match signed-ness of other calls. The default abort_parser callback, strp_abort_strp, sets sk->sk_err to err. Also negate the error here so sk_err always holds a positive value, as the rest of the net code expects. Currently a negative sk_err can result in endless loops, or user code that thinks it actually sent/received err bytes. Found while testing net/tls_sw recv path. Fixes: 43a0c675 ("strparser: Stream parser for messages") Signed-off-by: Dave Watson <davejwatson@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Davide Caratti authored
[ Upstream commit 2d433610 ] when the following command # tc action replace action skbmod swap mac index 100 is run for the first time, and tcf_skbmod_init() fails to allocate struct tcf_skbmod_params, tcf_skbmod_cleanup() calls kfree_rcu(NULL), thus causing the following error: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 IP: __call_rcu+0x23/0x2b0 PGD 8000000034057067 P4D 8000000034057067 PUD 74937067 PMD 0 Oops: 0002 [#1] SMP PTI Modules linked in: act_skbmod(E) psample ip6table_filter ip6_tables iptable_filter binfmt_misc ext4 snd_hda_codec_generic snd_hda_intel snd_hda_codec crct10dif_pclmul mbcache jbd2 crc32_pclmul snd_hda_core ghash_clmulni_intel snd_hwdep pcbc snd_seq snd_seq_device snd_pcm aesni_intel snd_timer crypto_simd glue_helper snd cryptd virtio_balloon joydev soundcore pcspkr i2c_piix4 nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c ata_generic pata_acpi qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm virtio_console virtio_net virtio_blk ata_piix libata crc32c_intel virtio_pci serio_raw virtio_ring virtio i2c_core floppy dm_mirror dm_region_hash dm_log dm_mod [last unloaded: act_skbmod] CPU: 3 PID: 3144 Comm: tc Tainted: G E 4.16.0-rc4.act_vlan.orig+ #403 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 RIP: 0010:__call_rcu+0x23/0x2b0 RSP: 0018:ffffbd2e403e7798 EFLAGS: 00010246 RAX: ffffffffc0872080 RBX: ffff981d34bff780 RCX: 00000000ffffffff RDX: ffffffff922a5f00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000000021f R10: 000000003d003000 R11: 0000000000aaaaaa R12: 0000000000000000 R13: ffffffff922a5f00 R14: 0000000000000001 R15: ffff981d3b698c2c FS: 00007f3678292740(0000) GS:ffff981d3fd80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 000000007c57a006 CR4: 00000000001606e0 Call Trace: __tcf_idr_release+0x79/0xf0 tcf_skbmod_init+0x1d1/0x210 [act_skbmod] tcf_action_init_1+0x2cc/0x430 tcf_action_init+0xd3/0x1b0 tc_ctl_action+0x18b/0x240 rtnetlink_rcv_msg+0x29c/0x310 ? _cond_resched+0x15/0x30 ? __kmalloc_node_track_caller+0x1b9/0x270 ? rtnl_calcit.isra.28+0x100/0x100 netlink_rcv_skb+0xd2/0x110 netlink_unicast+0x17c/0x230 netlink_sendmsg+0x2cd/0x3c0 sock_sendmsg+0x30/0x40 ___sys_sendmsg+0x27a/0x290 ? filemap_map_pages+0x34a/0x3a0 ? __handle_mm_fault+0xbfd/0xe20 __sys_sendmsg+0x51/0x90 do_syscall_64+0x6e/0x1a0 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 RIP: 0033:0x7f36776a3ba0 RSP: 002b:00007fff4703b618 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fff4703b740 RCX: 00007f36776a3ba0 RDX: 0000000000000000 RSI: 00007fff4703b690 RDI: 0000000000000003 RBP: 000000005aaaba36 R08: 0000000000000002 R09: 0000000000000000 R10: 00007fff4703b0a0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff4703b754 R14: 0000000000000001 R15: 0000000000669f60 Code: 5d e9 42 da ff ff 66 90 0f 1f 44 00 00 41 57 41 56 41 55 49 89 d5 41 54 55 48 89 fd 53 48 83 ec 08 40 f6 c7 07 0f 85 19 02 00 00 <48> 89 75 08 48 c7 45 00 00 00 00 00 9c 58 0f 1f 44 00 00 49 89 RIP: __call_rcu+0x23/0x2b0 RSP: ffffbd2e403e7798 CR2: 0000000000000008 Fix it in tcf_skbmod_cleanup(), ensuring that kfree_rcu(p, ...) is called only when p is not NULL. Fixes: 86da71b5 ("net_sched: Introduce skbmod action") Signed-off-by: Davide Caratti <dcaratti@redhat.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Davide Caratti authored
[ Upstream commit abdadd3c ] when the following command # tc action add action tunnel_key unset index 100 is run for the first time, and tunnel_key_init() fails to allocate struct tcf_tunnel_key_params, tunnel_key_release() dereferences NULL pointers. This causes the following error: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 IP: tunnel_key_release+0xd/0x40 [act_tunnel_key] PGD 8000000033787067 P4D 8000000033787067 PUD 74646067 PMD 0 Oops: 0000 [#1] SMP PTI Modules linked in: act_tunnel_key(E) act_csum ip6table_filter ip6_tables iptable_filter binfmt_misc ext4 mbcache jbd2 crct10dif_pclmul crc32_pclmul snd_hda_codec_generic ghash_clmulni_intel snd_hda_intel pcbc snd_hda_codec snd_hda_core snd_hwdep snd_seq aesni_intel snd_seq_device crypto_simd glue_helper snd_pcm cryptd joydev snd_timer pcspkr virtio_balloon snd i2c_piix4 soundcore nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c ata_generic pata_acpi qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm virtio_net virtio_blk drm virtio_console crc32c_intel ata_piix serio_raw i2c_core virtio_pci libata virtio_ring virtio floppy dm_mirror dm_region_hash dm_log dm_mod CPU: 2 PID: 3101 Comm: tc Tainted: G E 4.16.0-rc4.act_vlan.orig+ #403 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 RIP: 0010:tunnel_key_release+0xd/0x40 [act_tunnel_key] RSP: 0018:ffffba46803b7768 EFLAGS: 00010286 RAX: ffffffffc09010a0 RBX: 0000000000000000 RCX: 0000000000000024 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff99ee336d7480 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000044 R10: 0000000000000220 R11: ffff99ee79d73131 R12: 0000000000000000 R13: ffff99ee32d67610 R14: ffff99ee7671dc38 R15: 00000000fffffff4 FS: 00007febcb2cd740(0000) GS:ffff99ee7fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000010 CR3: 000000007c8e4005 CR4: 00000000001606e0 Call Trace: __tcf_idr_release+0x79/0xf0 tunnel_key_init+0xd9/0x460 [act_tunnel_key] tcf_action_init_1+0x2cc/0x430 tcf_action_init+0xd3/0x1b0 tc_ctl_action+0x18b/0x240 rtnetlink_rcv_msg+0x29c/0x310 ? _cond_resched+0x15/0x30 ? __kmalloc_node_track_caller+0x1b9/0x270 ? rtnl_calcit.isra.28+0x100/0x100 netlink_rcv_skb+0xd2/0x110 netlink_unicast+0x17c/0x230 netlink_sendmsg+0x2cd/0x3c0 sock_sendmsg+0x30/0x40 ___sys_sendmsg+0x27a/0x290 __sys_sendmsg+0x51/0x90 do_syscall_64+0x6e/0x1a0 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 RIP: 0033:0x7febca6deba0 RSP: 002b:00007ffe7b0dd128 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ffe7b0dd250 RCX: 00007febca6deba0 RDX: 0000000000000000 RSI: 00007ffe7b0dd1a0 RDI: 0000000000000003 RBP: 000000005aaa90cb R08: 0000000000000002 R09: 0000000000000000 R10: 00007ffe7b0dcba0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe7b0dd264 R14: 0000000000000001 R15: 0000000000669f60 Code: 44 00 00 8b 0d b5 23 00 00 48 8b 87 48 10 00 00 48 8b 3c c8 e9 a5 e5 d8 c3 0f 1f 44 00 00 0f 1f 44 00 00 53 48 8b 9f b0 00 00 00 <83> 7b 10 01 74 0b 48 89 df 31 f6 5b e9 f2 fa 7f c3 48 8b 7b 18 RIP: tunnel_key_release+0xd/0x40 [act_tunnel_key] RSP: ffffba46803b7768 CR2: 0000000000000010 Fix this in tunnel_key_release(), ensuring 'param' is not NULL before dereferencing it. Fixes: d0f6dd8a ("net/sched: Introduce act_tunnel_key") Signed-off-by: Davide Caratti <dcaratti@redhat.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Shahar Klein authored
[ Upstream commit a117f73d ] When mlx5_core is loaded it is expected to sync ports with all vxlan devices so it can support vxlan encap/decap. This is done via udp_tunnel_get_rx_info(). Currently this call is set in mlx5e_nic_enable() and if the netdev is not in NETREG_REGISTERED state it will not be called. Normally on load the netdev state is not NETREG_REGISTERED so udp_tunnel_get_rx_info() will not be called. Moving udp_tunnel_get_rx_info() to mlx5e_open() so it will be called on netdev UP event and allow encap/decap. Fixes: 610e89e0 ("net/mlx5e: Don't sync netdev state when not registered") Signed-off-by: Shahar Klein <shahark@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Jianbo Liu authored
The vport admin original link state will be re-applied after returning back to legacy mode, it is not right to change the admin link state value when in switchdev mode. Use direct vport commands to alter logical vport state in netdev representor open/close flows rather than the administrative eswitch API. Fixes: 20a1ea67 ('net/mlx5e: Support VF vport link state control for SRIOV switchdev mode') Signed-off-by: Jianbo Liu <jianbol@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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David Lebrun authored
[ Upstream commit 5807b22c ] Enabling TSO can lead to abysmal performances when using seg6 in encap mode, such as with the ixgbe driver. This patch adds a call to iptunnel_handle_offloads() to remove the encapsulation bit if needed. Before: root@comp4-seg6bpf:~# iperf3 -c fc00::55 Connecting to host fc00::55, port 5201 [ 4] local fc45::4 port 36592 connected to fc00::55 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 196 KBytes 1.60 Mbits/sec 47 6.66 KBytes [ 4] 1.00-2.00 sec 304 KBytes 2.49 Mbits/sec 100 5.33 KBytes [ 4] 2.00-3.00 sec 284 KBytes 2.32 Mbits/sec 92 5.33 KBytes After: root@comp4-seg6bpf:~# iperf3 -c fc00::55 Connecting to host fc00::55, port 5201 [ 4] local fc45::4 port 43062 connected to fc00::55 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 1.03 GBytes 8.89 Gbits/sec 0 743 KBytes [ 4] 1.00-2.00 sec 1.03 GBytes 8.87 Gbits/sec 0 743 KBytes [ 4] 2.00-3.00 sec 1.03 GBytes 8.87 Gbits/sec 0 743 KBytes Reported-by: Tom Herbert <tom@quantonium.net> Fixes: 6c8702c6 ("ipv6: sr: add support for SRH encapsulation and injection with lwtunnels") Signed-off-by: David Lebrun <dlebrun@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Dirk van der Merwe authored
[ Upstream commit 1489bbd1 ] The NSP default buffer is a piece of NFP memory where additional command data can be placed. Its format has been copied from host buffer, but the PCIe selection bits do not make sense in this case. If those get masked out from a NFP address - writes to random place in the chip memory may be issued and crash the device. Even in the general NSP buffer case, it doesn't make sense to have the PCIe selection bits there anymore. These are unused at the moment, and when it becomes necessary, the PCIe selection bits should rather be moved to another register to utilise more bits for the buffer address. This has never been an issue because the buffer used to be allocated in memory with less-than-38-bit-long address but that is about to change. Fixes: 1a64821c ("nfp: add support for service processor access") Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Jianbo Liu authored
[ Upstream commit af1607c3 ] For NIC flows, the parsed attributes are not freed when we exit successfully from mlx5e_configure_flower(). There is possible double free for eswitch flows. If error is returned from rhashtable_insert_fast(), the parse attrs will be freed in mlx5e_tc_del_flow(), but they will be freed again before exiting mlx5e_configure_flower(). To fix both issues we do the following: (1) change the condition that determines if to issue the free call to check if this flow is NIC flow, or it does not have encap action. (2) reorder the code such that that the check and free calls are done before we attempt to add into the hash table. Fixes: 232c0013 ('net/mlx5e: Add support to neighbour update flow') Signed-off-by: Jianbo Liu <jianbol@mellanox.com> Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Or Gerlitz authored
[ Upstream commit 423c9db2 ] Currently we use the global ipv6_stub var to access the ipv6 global nd table. This practice gets us to troubles when the stub is only partially set e.g when ipv6 is loaded under the disabled policy. In this case, as of commit 343d60aa ("ipv6: change ipv6_stub_impl.ipv6_dst_lookup to take net argument") the stub is not null, but stub->nd_tbl is and we crash. As we can access the ipv6 nd_tbl directly, the fix is just to avoid the reference through the stub. There is one place in the code where we issue ipv6 route lookup and keep doing it through the stub, but that mentioned commit makes sure we get -EAFNOSUPPORT from the stack. Fixes: 232c0013 ("net/mlx5e: Add support to neighbour update flow") Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Aviv Heller <avivh@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Eric Dumazet authored
[ Upstream commit 537b361f ] Use valid_name() to make sure user does not provide illegal device name. Fixes: ed1efb2a ("ipv6: Add support for IPsec virtual tunnel interfaces") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Eric Dumazet authored
[ Upstream commit db7a65e3 ] Use valid_name() to make sure user does not provide illegal device name. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Eric Dumazet authored
[ Upstream commit 5f42df01 ] Use dev_valid_name() to make sure user does not provide illegal device name. syzbot caught the following bug : BUG: KASAN: stack-out-of-bounds in strlcpy include/linux/string.h:300 [inline] BUG: KASAN: stack-out-of-bounds in ip6gre_tunnel_locate+0x334/0x860 net/ipv6/ip6_gre.c:339 Write of size 20 at addr ffff8801afb9f7b8 by task syzkaller851048/4466 CPU: 1 PID: 4466 Comm: syzkaller851048 Not tainted 4.16.0+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b9/0x29f lib/dump_stack.c:53 print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0xac/0x2f5 mm/kasan/report.c:412 check_memory_region_inline mm/kasan/kasan.c:260 [inline] check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267 memcpy+0x37/0x50 mm/kasan/kasan.c:303 strlcpy include/linux/string.h:300 [inline] ip6gre_tunnel_locate+0x334/0x860 net/ipv6/ip6_gre.c:339 ip6gre_tunnel_ioctl+0x69d/0x12e0 net/ipv6/ip6_gre.c:1195 dev_ifsioc+0x43e/0xb90 net/core/dev_ioctl.c:334 dev_ioctl+0x69a/0xcc0 net/core/dev_ioctl.c:525 sock_ioctl+0x47e/0x680 net/socket.c:1015 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x1cf/0x1650 fs/ioctl.c:684 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701 SYSC_ioctl fs/ioctl.c:708 [inline] SyS_ioctl+0x24/0x30 fs/ioctl.c:706 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 Fixes: c12b395a ("gre: Support GRE over IPv6") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Eric Dumazet authored
[ Upstream commit b95211e0 ] Use dev_valid_name() to make sure user does not provide illegal device name. syzbot caught the following bug : BUG: KASAN: stack-out-of-bounds in strlcpy include/linux/string.h:300 [inline] BUG: KASAN: stack-out-of-bounds in ipip6_tunnel_locate+0x63b/0xaa0 net/ipv6/sit.c:254 Write of size 33 at addr ffff8801b64076d8 by task syzkaller932654/4453 CPU: 0 PID: 4453 Comm: syzkaller932654 Not tainted 4.16.0+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b9/0x29f lib/dump_stack.c:53 print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0xac/0x2f5 mm/kasan/report.c:412 check_memory_region_inline mm/kasan/kasan.c:260 [inline] check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267 memcpy+0x37/0x50 mm/kasan/kasan.c:303 strlcpy include/linux/string.h:300 [inline] ipip6_tunnel_locate+0x63b/0xaa0 net/ipv6/sit.c:254 ipip6_tunnel_ioctl+0xe71/0x241b net/ipv6/sit.c:1221 dev_ifsioc+0x43e/0xb90 net/core/dev_ioctl.c:334 dev_ioctl+0x69a/0xcc0 net/core/dev_ioctl.c:525 sock_ioctl+0x47e/0x680 net/socket.c:1015 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x1cf/0x1650 fs/ioctl.c:684 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701 SYSC_ioctl fs/ioctl.c:708 [inline] SyS_ioctl+0x24/0x30 fs/ioctl.c:706 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Eric Dumazet authored
[ Upstream commit 9cb726a2 ] Use dev_valid_name() to make sure user does not provide illegal device name. syzbot caught the following bug : BUG: KASAN: stack-out-of-bounds in strlcpy include/linux/string.h:300 [inline] BUG: KASAN: stack-out-of-bounds in __ip_tunnel_create+0xca/0x6b0 net/ipv4/ip_tunnel.c:257 Write of size 20 at addr ffff8801ac79f810 by task syzkaller268107/4482 CPU: 0 PID: 4482 Comm: syzkaller268107 Not tainted 4.16.0+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b9/0x29f lib/dump_stack.c:53 print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0xac/0x2f5 mm/kasan/report.c:412 check_memory_region_inline mm/kasan/kasan.c:260 [inline] check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267 memcpy+0x37/0x50 mm/kasan/kasan.c:303 strlcpy include/linux/string.h:300 [inline] __ip_tunnel_create+0xca/0x6b0 net/ipv4/ip_tunnel.c:257 ip_tunnel_create net/ipv4/ip_tunnel.c:352 [inline] ip_tunnel_ioctl+0x818/0xd40 net/ipv4/ip_tunnel.c:861 ipip_tunnel_ioctl+0x1c5/0x420 net/ipv4/ipip.c:350 dev_ifsioc+0x43e/0xb90 net/core/dev_ioctl.c:334 dev_ioctl+0x69a/0xcc0 net/core/dev_ioctl.c:525 sock_ioctl+0x47e/0x680 net/socket.c:1015 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x1cf/0x1650 fs/ioctl.c:684 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701 SYSC_ioctl fs/ioctl.c:708 [inline] SyS_ioctl+0x24/0x30 fs/ioctl.c:706 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 Fixes: c5441932 ("GRE: Refactor GRE tunneling code.") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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