- 10 Aug, 2017 6 commits
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Andy Lutomirski authored
execve used to leak FSBASE and GSBASE on AMD CPUs. Fix it. The security impact of this bug is small but not quite zero -- it could weaken ASLR when a privileged task execs a less privileged program, but only if program changed bitness across the exec, or the child binary was highly unusual or actively malicious. A child program that was compromised after the exec would not have access to the leaked base. Signed-off-by:
Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bpetkov@suse.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Chang Seok <chang.seok.bae@intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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Josh Poimboeuf authored
Apparently the binutils 2.20 assembler can't handle the '&&' operator in the UNWIND_HINT_REGS macro. Rearrange the macro to do without it. This fixes the following error: arch/x86/entry/entry_64.S: Assembler messages: arch/x86/entry/entry_64.S:521: Error: non-constant expression in ".if" statement arch/x86/entry/entry_64.S:521: Error: non-constant expression in ".if" statement arch/x86/entry/entry_64.S:521: Error: non-constant expression in ".if" statement arch/x86/entry/entry_64.S:521: Error: non-constant expression in ".if" statement arch/x86/entry/entry_64.S:521: Error: non-constant expression in ".if" statement arch/x86/entry/entry_64.S:521: Error: non-constant expression in ".if" statement arch/x86/entry/entry_64.S:521: Error: non-constant expression in ".if" statement arch/x86/entry/entry_64.S:521: Error: non-constant expression in ".if" statement arch/x86/entry/entry_64.S:521: Error: non-constant expression in ".if" statement Reported-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 39358a03 ("objtool, x86: Add facility for asm code to provide unwind hints") Link: http://lkml.kernel.org/r/e2ad97c1ae49a484644b4aaa4dd3faa4d6d969b2.1502116651.git.jpoimboe@redhat.comSigned-off-by:
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Andy Lutomirski authored
The segment register high words on x86_32 may contain garbage. Teach regs_get_register() to read them as u16 instead of unsigned long. Signed-off-by:
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Andy Lutomirski authored
Xen's raw SYSCALL entries are much less weird than native. Rather than fudging them to look like native entries, use the Xen-provided stack frame directly. This lets us eliminate entry_SYSCALL_64_after_swapgs and two uses of the SWAPGS_UNSAFE_STACK paravirt hook. The SYSENTER code would benefit from similar treatment. This makes one change to the native code path: the compat instruction that clears the high 32 bits of %rax is moved slightly later. I'd be surprised if this affects performance at all. Tested-by:
Juergen Gross <jgross@suse.com> Signed-off-by:
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Ingo Molnar authored
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Andy Lutomirski authored
This closes a hole in our SMAP implementation. This patch comes from grsecurity. Good catch! Signed-off-by:
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- 09 Aug, 2017 14 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlLinus Torvalds authored
Pull pin control fixes from Linus Walleij: "These are the pin control fixes I have gathered since the return from my vacation. They boiled in -next a while so let's get them in. Apart from the documentation build it is purely driver fixes. Which is nice. The Intel fixes seem kind of important. - Fix the documentation build as the docs were moved - Correct the UART pin list on the Intel Merrifield - Fix pin assignment and number of pins on the Marvell Armada 37xx pin controller - Cover the Setzer models in the Chromebook DMI quirk in the Intel cheryview driver so they start working - Add the missing "sim" function to the sunxi driver - Fix USB pin definitions on Uniphier Pro4 - Smatch fix for invalid reference in the zx pin control driver" * tag 'pinctrl-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: pinctrl: generic: update references to Documentation/pinctrl.txt pinctrl: intel: merrifield: Correct UART pin lists pinctrl: armada-37xx: Fix number of pin in south bridge pinctrl: armada-37xx: Fix the pin 23 on south bridge pinctrl: cherryview: Add Setzer models to the Chromebook DMI quirk pinctrl: sunxi: add a missing function of A10/A20 pinctrl driver pinctrl: uniphier: fix USB3 pin assignment for Pro4 pinctrl: zte: fix dereference of 'data' in zx_set_mux() -
Mel Gorman authored
Commit 65d8fc77 ("futex: Remove requirement for lock_page() in get_futex_key()") removed an unnecessary lock_page() with the side-effect that page->mapping needed to be treated very carefully. Two defensive warnings were added in case any assumption was missed and the first warning assumed a correct application would not alter a mapping backing a futex key. Since merging, it has not triggered for any unexpected case but Mark Rutland reported the following bug triggering due to the first warning. kernel BUG at kernel/futex.c:679! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 3695 Comm: syz-executor1 Not tainted 4.13.0-rc3-00020-g307fec773ba3 #3 Hardware name: linux,dummy-virt (DT) task: ffff80001e271780 task.stack: ffff000010908000 PC is at get_futex_key+0x6a4/0xcf0 kernel/futex.c:679 LR is at get_futex_key+0x6a4/0xcf0 kernel/futex.c:679 pc : [<ffff00000821ac14>] lr : [<ffff00000821ac14>] pstate: 80000145 The fact that it's a bug instead of a warning was due to an unrelated arm64 problem, but the warning itself triggered because the underlying mapping changed. This is an application issue but from a kernel perspective it's a recoverable situation and the warning is unnecessary so this patch removes the warning. The warning may potentially be triggered with the following test program from Mark although it may be necessary to adjust NR_FUTEX_THREADS to be a value smaller than the number of CPUs in the system. #include <linux/futex.h> #include <pthread.h> #include <stdio.h> #include <stdlib.h> #include <sys/mman.h> #include <sys/syscall.h> #include <sys/time.h> #include <unistd.h> #define NR_FUTEX_THREADS 16 pthread_t threads[NR_FUTEX_THREADS]; void *mem; #define MEM_PROT (PROT_READ | PROT_WRITE) #define MEM_SIZE 65536 static int futex_wrapper(int *uaddr, int op, int val, const struct timespec *timeout, int *uaddr2, int val3) { syscall(SYS_futex, uaddr, op, val, timeout, uaddr2, val3); } void *poll_futex(void *unused) { for (;;) { futex_wrapper(mem, FUTEX_CMP_REQUEUE_PI, 1, NULL, mem + 4, 1); } } int main(int argc, char *argv[]) { int i; mem = mmap(NULL, MEM_SIZE, MEM_PROT, MAP_SHARED | MAP_ANONYMOUS, -1, 0); printf("Mapping @ %p\n", mem); printf("Creating futex threads...\n"); for (i = 0; i < NR_FUTEX_THREADS; i++) pthread_create(&threads[i], NULL, poll_futex, NULL); printf("Flipping mapping...\n"); for (;;) { mmap(mem, MEM_SIZE, MEM_PROT, MAP_FIXED | MAP_SHARED | MAP_ANONYMOUS, -1, 0); } return 0; } Reported-and-tested-by:
Mark Rutland <mark.rutland@arm.com> Signed-off-by:
Mel Gorman <mgorman@suse.de> Acked-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: stable@vger.kernel.org # 4.7+ Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "The main thing is to allow empty id_tables for ACPI to make some drivers get probed again. It looks a bit bigger than usual because it needs some internal renaming, too. Other than that, there is a fix for broken DSTDs, a super simple enablement for ARM MPS, and two documentation fixes which I'd like to see in v4.13 already" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: rephrase explanation of I2C_CLASS_DEPRECATED i2c: allow i2c-versatile for ARM MPS platforms i2c: designware: Some broken DSTDs use 1MiHz instead of 1MHz i2c: designware: Print clock freq on invalid clock freq error i2c: core: Allow empty id_table in ACPI case as well i2c: mux: pinctrl: mention correct module name in Kconfig help text
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: "Three patches that should go into this release. Two of them are from Paolo and fix up some corner cases with BFQ, and the last patch is from Ming and fixes up a potential usage count imbalance regression due to the recent NOWAIT work" * 'for-linus' of git://git.kernel.dk/linux-block: blk-mq: don't leak preempt counter/q_usage_counter when allocating rq failed block, bfq: consider also in_service_entity to state whether an entity is active block, bfq: reset in_service_entity if it becomes idle
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds authored
Pull crypto fixes from Herbert Xu: "Fix two regressions in the inside-secure driver with respect to hmac(sha1)" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: inside-secure - fix the sha state length in hmac_sha1_setkey crypto: inside-secure - fix invalidation check in hmac_sha1_setkey
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: "The pull requests are getting smaller, that's progress I suppose :-) 1) Fix infinite loop in CIPSO option parsing, from Yujuan Qi. 2) Fix remote checksum handling in VXLAN and GUE tunneling drivers, from Koichiro Den. 3) Missing u64_stats_init() calls in several drivers, from Florian Fainelli. 4) TCP can set the congestion window to an invalid ssthresh value after congestion window reductions, from Yuchung Cheng. 5) Fix BPF jit branch generation on s390, from Daniel Borkmann. 6) Correct MIPS ebpf JIT merge, from David Daney. 7) Correct byte order test in BPF test_verifier.c, from Daniel Borkmann. 8) Fix various crashes and leaks in ASIX driver, from Dean Jenkins. 9) Handle SCTP checksums properly in mlx4 driver, from Davide Caratti. 10) We can potentially enter tcp_connect() with a cached route already, due to fastopen, so we have to explicitly invalidate it. 11) skb_warn_bad_offload() can bark in legitimate situations, fix from Willem de Bruijn" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (52 commits) net: avoid skb_warn_bad_offload false positives on UFO qmi_wwan: fix NULL deref on disconnect ppp: fix xmit recursion detection on ppp channels rds: Reintroduce statistics counting tcp: fastopen: tcp_connect() must refresh the route net: sched: set xt_tgchk_param par.net properly in ipt_init_target net: dsa: mediatek: add adjust link support for user ports net/mlx4_en: don't set CHECKSUM_COMPLETE on SCTP packets qed: Fix a memory allocation failure test in 'qed_mcp_cmd_init()' hysdn: fix to a race condition in put_log_buffer s390/qeth: fix L3 next-hop in xmit qeth hdr asix: Fix small memory leak in ax88772_unbind() asix: Ensure asix_rx_fixup_info members are all reset asix: Add rx->ax_skb = NULL after usbnet_skb_return() bpf: fix selftest/bpf/test_pkt_md_access on s390x netvsc: fix race on sub channel creation bpf: fix byte order test in test_verifier xgene: Always get clk source, but ignore if it's missing for SGMII ports MIPS: Add missing file for eBPF JIT. bpf, s390: fix build for libbpf and selftest suite ... -
Willem de Bruijn authored
skb_warn_bad_offload triggers a warning when an skb enters the GSO stack at __skb_gso_segment that does not have CHECKSUM_PARTIAL checksum offload set. Commit b2504a5d ("net: reduce skb_warn_bad_offload() noise") observed that SKB_GSO_DODGY producers can trigger the check and that passing those packets through the GSO handlers will fix it up. But, the software UFO handler will set ip_summed to CHECKSUM_NONE. When __skb_gso_segment is called from the receive path, this triggers the warning again. Make UFO set CHECKSUM_UNNECESSARY instead of CHECKSUM_NONE. On Tx these two are equivalent. On Rx, this better matches the skb state (checksum computed), as CHECKSUM_NONE here means no checksum computed. See also this thread for context: http://patchwork.ozlabs.org/patch/799015/ Fixes: b2504a5d ("net: reduce skb_warn_bad_offload() noise") Signed-off-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Bjørn Mork authored
qmi_wwan_disconnect is called twice when disconnecting devices with separate control and data interfaces. The first invocation will set the interface data to NULL for both interfaces to flag that the disconnect has been handled. But the matching NULL check was left out when qmi_wwan_disconnect was added, resulting in this oops: usb 2-1.4: USB disconnect, device number 4 qmi_wwan 2-1.4:1.6 wwp0s29u1u4i6: unregister 'qmi_wwan' usb-0000:00:1d.0-1.4, WWAN/QMI device BUG: unable to handle kernel NULL pointer dereference at 00000000000000e0 IP: qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] PGD 0 P4D 0 Oops: 0000 [#1] SMP Modules linked in: <stripped irrelevant module list> CPU: 2 PID: 33 Comm: kworker/2:1 Tainted: G E 4.12.3-nr44-normandy-r1500619820+ #1 Hardware name: LENOVO 4291LR7/4291LR7, BIOS CBET4000 4.6-810-g50522254fb 07/21/2017 Workqueue: usb_hub_wq hub_event [usbcore] task: ffff8c882b716040 task.stack: ffffb8e800d84000 RIP: 0010:qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] RSP: 0018:ffffb8e800d87b38 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffff8c8824f3f1d0 RDI: ffff8c8824ef6400 RBP: ffff8c8824ef6400 R08: 0000000000000000 R09: 0000000000000000 R10: ffffb8e800d87780 R11: 0000000000000011 R12: ffffffffc07ea0e8 R13: ffff8c8824e2e000 R14: ffff8c8824e2e098 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8c8835300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000000e0 CR3: 0000000229ca5000 CR4: 00000000000406e0 Call Trace: ? usb_unbind_interface+0x71/0x270 [usbcore] ? device_release_driver_internal+0x154/0x210 ? qmi_wwan_unbind+0x6d/0xc0 [qmi_wwan] ? usbnet_disconnect+0x6c/0xf0 [usbnet] ? qmi_wwan_disconnect+0x87/0xc0 [qmi_wwan] ? usb_unbind_interface+0x71/0x270 [usbcore] ? device_release_driver_internal+0x154/0x210 Reported-and-tested-by:
Nathaniel Roach <nroach44@gmail.com> Fixes: c6adf779 ("net: usb: qmi_wwan: add qmap mux protocol support") Cc: Daniele Palmas <dnlplm@gmail.com> Signed-off-by:
Bjørn Mork <bjorn@mork.no> Signed-off-by:
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Guillaume Nault authored
Commit e5dadc65 ("ppp: Fix false xmit recursion detect with two ppp devices") dropped the xmit_recursion counter incrementation in ppp_channel_push() and relied on ppp_xmit_process() for this task. But __ppp_channel_push() can also send packets directly (using the .start_xmit() channel callback), in which case the xmit_recursion counter isn't incremented anymore. If such packets get routed back to the parent ppp unit, ppp_xmit_process() won't notice the recursion and will call ppp_channel_push() on the same channel, effectively creating the deadlock situation that the xmit_recursion mechanism was supposed to prevent. This patch re-introduces the xmit_recursion counter incrementation in ppp_channel_push(). Since the xmit_recursion variable is now part of the parent ppp unit, incrementation is skipped if the channel doesn't have any. This is fine because only packets routed through the parent unit may enter the channel recursively. Finally, we have to ensure that pch->ppp is not going to be modified while executing ppp_channel_push(). Instead of taking this lock only while calling ppp_xmit_process(), we now have to hold it for the full ppp_channel_push() execution. This respects the ppp locks ordering which requires locking ->upl before ->downl. Fixes: e5dadc65 ("ppp: Fix false xmit recursion detect with two ppp devices") Signed-off-by:
Guillaume Nault <g.nault@alphalink.fr> Signed-off-by:
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Håkon Bugge authored
In commit 7e3f2952 ("rds: don't let RDS shutdown a connection while senders are present"), refilling the receive queue was removed from rds_ib_recv(), along with the increment of s_ib_rx_refill_from_thread. Commit 73ce4317 ("RDS: make sure we post recv buffers") re-introduces filling the receive queue from rds_ib_recv(), but does not add the statistics counter. rds_ib_recv() was later renamed to rds_ib_recv_path(). This commit reintroduces the statistics counting of s_ib_rx_refill_from_thread and s_ib_rx_refill_from_cq. Signed-off-by:
Håkon Bugge <haakon.bugge@oracle.com> Reviewed-by:
Knut Omang <knut.omang@oracle.com> Reviewed-by:
Wei Lin Guay <wei.lin.guay@oracle.com> Reviewed-by:
Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Acked-by:
Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by:
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Eric Dumazet authored
With new TCP_FASTOPEN_CONNECT socket option, there is a possibility to call tcp_connect() while socket sk_dst_cache is either NULL or invalid. +0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 4 +0 fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK) = 0 +0 setsockopt(4, SOL_TCP, TCP_FASTOPEN_CONNECT, [1], 4) = 0 +0 connect(4, ..., ...) = 0 << sk->sk_dst_cache becomes obsolete, or even set to NULL >> +1 sendto(4, ..., 1000, MSG_FASTOPEN, ..., ...) = 1000 We need to refresh the route otherwise bad things can happen, especially when syzkaller is running on the host :/ Fixes: 19f6d3f3 ("net/tcp-fastopen: Add new API support") Reported-by:
Dmitry Vyukov <dvyukov@google.com> Signed-off-by:
Eric Dumazet <edumazet@google.com> Cc: Wei Wang <weiwan@google.com> Cc: Yuchung Cheng <ycheng@google.com> Acked-by:
Wei Wang <weiwan@google.com> Acked-by:
Yuchung Cheng <ycheng@google.com> Signed-off-by:
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Xin Long authored
Now xt_tgchk_param par in ipt_init_target is a local varibale, par.net is not initialized there. Later when xt_check_target calls target's checkentry in which it may access par.net, it would cause kernel panic. Jaroslav found this panic when running: # ip link add TestIface type dummy # tc qd add dev TestIface ingress handle ffff: # tc filter add dev TestIface parent ffff: u32 match u32 0 0 \ action xt -j CONNMARK --set-mark 4 This patch is to pass net param into ipt_init_target and set par.net with it properly in there. v1->v2: As Wang Cong pointed, I missed ipt_net_id != xt_net_id, so fix it by also passing net_id to __tcf_ipt_init. v2->v3: Missed the fixes tag, so add it. Fixes: ecb2421b ("netfilter: add and use nf_ct_netns_get/put") Reported-by:Jaroslav Aster <jaster@redhat.com> Signed-off-by:
Xin Long <lucien.xin@gmail.com> Acked-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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John Crispin authored
Manually adjust the port settings of user ports once PHY polling has completed. This patch extends the adjust_link callback to configure the per port PMCR register, applying the proper values polled from the PHY. Without this patch flow control was not always getting setup properly. Signed-off-by:
Shashidhar Lakkavalli <shashidhar.lakkavalli@openmesh.com> Signed-off-by:
Muciri Gatimu <muciri@openmesh.com> Signed-off-by:
John Crispin <john@phrozen.org> Signed-off-by:
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Davide Caratti authored
if the NIC fails to validate the checksum on TCP/UDP, and validation of IP checksum is successful, the driver subtracts the pseudo-header checksum from the value obtained by the hardware and sets CHECKSUM_COMPLETE. Don't do that if protocol is IPPROTO_SCTP, otherwise CRC32c validation fails. V2: don't test MLX4_CQE_STATUS_IPV6 if MLX4_CQE_STATUS_IPV4 is set Reported-by:
Shuang Li <shuali@redhat.com> Fixes: f8c6455b ("net/mlx4_en: Extend checksum offloading by CHECKSUM COMPLETE") Signed-off-by:
Davide Caratti <dcaratti@redhat.com> Acked-by:
Saeed Mahameed <saeedm@mellanox.com> Signed-off-by:
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- 08 Aug, 2017 12 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdmaLinus Torvalds authored
Pull rdma fixes from Doug Ledford: "Third set of -rc fixes for 4.13 cycle - small set of miscellanous fixes - a reasonably sizable set of IPoIB fixes that deal with multiple long standing issues" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: IB/hns: checking for IS_ERR() instead of NULL RDMA/mlx5: Fix existence check for extended address vector IB/uverbs: Fix device cleanup RDMA/uverbs: Prevent leak of reserved field IB/core: Fix race condition in resolving IP to MAC IB/ipoib: Notify on modify QP failure only when relevant Revert "IB/core: Allow QP state transition from reset to error" IB/ipoib: Remove double pointer assigning IB/ipoib: Clean error paths in add port IB/ipoib: Add get statistics support to SRIOV VF IB/ipoib: Add multicast packets statistics IB/ipoib: Set IPOIB_NEIGH_TBL_FLUSH after flushed completion initialization IB/ipoib: Prevent setting negative values to max_nonsrq_conn_qp IB/ipoib: Make sure no in-flight joins while leaving that mcast IB/ipoib: Use cancel_delayed_work_sync when needed IB/ipoib: Fix race between light events and interface restart -
Joe Perches authored
Allow any number of command line arguments to match either the section header or the section contents and create new files. Create MAINTAINERS.new and SECTION.new. This allows scripting of the movement of various sections from MAINTAINERS. Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
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Joe Perches authored
Instead of reading STDIN and writing STDOUT, use specific filenames of MAINTAINERS and MAINTAINERS.new. Use hash references instead of global hash %hash so future modifications can read and write specific hashes to split up MAINTAINERS into multiple files using a script. Signed-off-by:
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Joe Perches authored
Section [A-Z]: patterns are not currently in any required sorting order. Add a specific sorting sequence to MAINTAINERS entries. Sort F: and X: patterns in alphabetic order. The preferred section ordering is: SECTION HEADER M: Maintainers R: Reviewers P: Named persons without email addresses L: Mailing list addresses S: Status of this section (Supported, Maintained, Orphan, etc...) W: Any relevant URLs T: Source code control type (git, quilt, etc) Q: Patchwork patch acceptance queue site B: Bug tracking URIs C: Chat URIs F: Files with wildcard patterns (alphabetic ordered) X: Excluded files with wildcard patterns (alphabetic ordered) N: Files with regex patterns K: Keyword regexes in source code for maintainership identification Miscellaneous perl neatening: - Rename %map to %hash, map has a different meaning in perl - Avoid using \& and local variables for function indirection - Use return for a little c like clarity - Use c-like function call style instead of &function Signed-off-by:
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Joe Perches authored
Allow for MAINTAINERS to become a directory and if it is, read all the files in the directory for maintained sections. Optionally look for all files named MAINTAINERS in directories excluding the .git directory by using --find-maintainer-files. This optional feature adds ~.3 seconds of CPU on an Intel i5-6200 with an SSD. Miscellanea: - Create a read_maintainer_file subroutine from the existing code - Test only the existence of MAINTAINERS, not whether it's a file Signed-off-by:
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Randy Dunlap authored
The openbmc mailing list is moderated for non-subscribers. Signed-off-by:
Randy Dunlap <rdunlap@infradead.org> Acked-by:
Brendan Higgins <brendanhiggins@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Joel Stanley <joel@jms.id.au> Signed-off-by:
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Sedat Dilek authored
Fixes: f47e07bc ("Fix up MAINTAINERS file problems") Cc: Joe Perches <joe@perches.com> Signed-off-by:
Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "Two small fixes, one re-fix of a previous fix and five patches sorting out hotplug in the bnx2X class of drivers. The latter is rather involved, but necessary because these drivers have started dropping lockdep recursion warnings on the hotplug lock because of its conversion to a percpu rwsem" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: sg: only check for dxfer_len greater than 256M scsi: aacraid: reading out of bounds scsi: qedf: Limit number of CQs scsi: bnx2i: Simplify cpu hotplug code scsi: bnx2fc: Simplify CPU hotplug code scsi: bnx2i: Prevent recursive cpuhotplug locking scsi: bnx2fc: Prevent recursive cpuhotplug locking scsi: bnx2fc: Plug CPU hotplug race
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Helge Deller authored
Fix the warning message on the parisc and IA64 architectures to show the correct function name of the caller by using %pS instead of %pF. The message is printed with the value of _RET_IP_ which calls __builtin_return_address(0) and as such returns the IP address caller instead of pointer to a function descriptor of the caller. The effect of this patch is visible on the parisc and ia64 architectures only since those are the ones which use function descriptors while on all others %pS and %pF will behave the same. Cc: Theodore Ts'o <tytso@mit.edu> Cc: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by:
Helge Deller <deller@gmx.de> Fixes: eecabf56 ("random: suppress spammy warnings about unseeded randomness") Fixes: d06bfd19 ("random: warn when kernel uses unseeded randomness") Signed-off-by:
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git://github.com/jcmvbkbc/linux-xtensaLinus Torvalds authored
Pull Xtensa fixes from Max Filippov: - use asm-generic instances of asm/param.h and asm/device.h instead of exact copies in arch/xtensa/include/asm; - fix build error for xtensa cores with aliasing WT cache: define cache flushing functions and copy_{to,from}_user_page; - add missing EXPORT_SYMBOLs for clear_user_highpage, copy_user_highpage, flush_dcache_page, local_flush_cache_range, local_flush_cache_page, csum_partial and csum_partial_copy_generic. * tag 'xtensa-20170807' of git://github.com/jcmvbkbc/linux-xtensa: xtensa: mm/cache: add missing EXPORT_SYMBOLs xtensa: don't limit csum_partial export by CONFIG_NET xtensa: fix cache aliasing handling code for WT cache xtensa: remove wrapper header for asm/param.h xtensa: remove wrapper header for asm/device.h -
git://git.infradead.org/linux-mtdLinus Torvalds authored
Pull MTD fixes from Brian Norris: "I missed getting these out for rc4, but here are some MTD fixes. Just NAND fixes (in both the core handling, and a few drivers). Notes stolen from Boris: Core fixes: - fix data interface setup for ONFI NANDs that do not support the SET FEATURES command - fix a kernel doc header - fix potential integer overflow when retrieving timing information from the parameter page - fix wrong OOB layout for small page NANDs Driver fixes: - fix potential division-by-zero bug - fix backward compat with old atmel-nand DT bindings - fix ->setup_data_interface() in the atmel NAND driver" * tag 'for-linus-20170807' of git://git.infradead.org/linux-mtd: mtd: nand: atmel: Fix EDO mode check mtd: nand: Declare tBERS, tR and tPROG as u64 to avoid integer overflow mtd: nand: Fix timing setup for NANDs that do not support SET FEATURES mtd: nand: Fix a docs build warning mtd: nand: sunxi: fix potential divide-by-zero error nand: fix wrong default oob layout for small pages using soft ecc mtd: nand: atmel: Fix DT backward compatibility in pmecc.c -
git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds authored
Pull xfs fixes from Darrick Wong: "I have a couple more bug fixes for you today: - fix memory leak when issuing discard - fix propagation of the dax inode flag" * tag 'xfs-4.13-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: Fix per-inode DAX flag inheritance xfs: Fix leak of discard bio
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- 07 Aug, 2017 8 commits
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Christophe Jaillet authored
We allocate 'p_info->mfw_mb_cur' and 'p_info->mfw_mb_shadow' but we check 'p_info->mfw_mb_addr' instead of 'p_info->mfw_mb_cur'. 'p_info->mfw_mb_addr' is never 0, because it is initiliazed a few lines above in 'qed_load_mcp_offsets()'. Update the test and check the result of the 2 'kzalloc()' instead. Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by:
Tomer Tayar <Tomer.Tayar@cavium.com> Signed-off-by:
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Anton Volkov authored
The synchronization type that was used earlier to guard the loop that deletes unused log buffers may lead to a situation that prevents any thread from going through the loop. The patch deletes previously used synchronization mechanism and moves the loop under the spin_lock so the similar cases won't be feasible in the future. Found by by Linux Driver Verification project (linuxtesting.org). Signed-off-by:
Anton Volkov <avolkov@ispras.ru> Signed-off-by:
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Julian Wiedmann authored
On L3, the qeth_hdr struct needs to be filled with the next-hop IP address. The current code accesses rtable->rt_gateway without checking that rtable is a valid address. The accidental access to a lowcore area results in a random next-hop address in the qeth_hdr. rtable (or more precisely, skb_dst(skb)) can be NULL in rare cases (for instance together with AF_PACKET sockets). This patch adds the missing NULL-ptr checks. Signed-off-by:
Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by:
Ursula Braun <ubraun@linux.vnet.ibm.com> Fixes: 87e7597b qeth: Move away from using neighbour entries in qeth_l3_fill_header() Signed-off-by:
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Doug Ledford authored
Merge tag 'rdma-rc-2017-07-26' of git://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma into leon-ipoib IPoIB fixes for 4.13 The patchset provides various fixes for IPoIB. It is combination of fixes to various issues discovered during verification along with static checkers cleanup patches. Most of the patches are from pre-git era and hence lack of Fixes lines. There is one exception in this IPoIB group - addition of patch revert: Revert "IB/core: Allow QP state transition from reset to error", but it followed by proper fix to the annoying print, so I thought it is appropriate to include it. Signed-off-by:
Doug Ledford <dledford@redhat.com>
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David S. Miller authored
Dean Jenkins says: ==================== asix: Improve robustness Please consider taking these patches to improve the robustness of the ASIX USB to Ethernet driver. Failures prompting an ASIX driver code review ============================================= On an ARM i.MX6 embedded platform some strange one-off and two-off failures were observed in and around the ASIX USB to Ethernet driver. This was observed on a highly modified kernel 3.14 with the ASIX driver containing back-ported changes from kernel.org up to kernel 4.8 approximately. a) A one-off failure in asix_rx_fixup_internal(): There was an occurrence of an attempt to write off the end of the netdev buffer which was trapped by skb_over_panic() in skb_put(). [20030.846440] skbuff: skb_over_panic: text:7f2271c0 len:120 put:60 head:8366ecc0 data:8366ed02 tail:0x8366ed7a end:0x8366ed40 dev:eth0 [20030.863007] Kernel BUG at 8044ce38 [verbose debug info unavailable] [20031.215345] Backtrace: [20031.217884] [<8044cde0>] (skb_panic) from [<8044d50c>] (skb_put+0x50/0x5c) [20031.227408] [<8044d4bc>] (skb_put) from [<7f2271c0>] (asix_rx_fixup_internal+0x1c4/0x23c [asix]) [20031.242024] [<7f226ffc>] (asix_rx_fixup_internal [asix]) from [<7f22724c>] (asix_rx_fixup_common+0x14/0x18 [asix]) [20031.260309] [<7f227238>] (asix_rx_fixup_common [asix]) from [<7f21f7d4>] (usbnet_bh+0x74/0x224 [usbnet]) [20031.269879] [<7f21f760>] (usbnet_bh [usbnet]) from [<8002f834>] (call_timer_fn+0xa4/0x1f0) [20031.283961] [<8002f790>] (call_timer_fn) from [<80030834>] (run_timer_softirq+0x230/0x2a8) [20031.302782] [<80030604>] (run_timer_softirq) from [<80028780>] (__do_softirq+0x15c/0x37c) [20031.321511] [<80028624>] (__do_softirq) from [<80028c38>] (irq_exit+0x8c/0xe8) [20031.339298] [<80028bac>] (irq_exit) from [<8000e9c8>] (handle_IRQ+0x8c/0xc8) [20031.350038] [<8000e93c>] (handle_IRQ) from [<800085c8>] (gic_handle_irq+0xb8/0xf8) [20031.365528] [<80008510>] (gic_handle_irq) from [<8050de80>] (__irq_svc+0x40/0x70) Analysis of the logic of the ASIX driver (containing backported changes from kernel.org up to kernel 4.8 approximately) suggested that the software could not trigger skb_over_panic(). The analysis of the kernel BUG() crash information suggested that the netdev buffer was written with 2 minimal 60 octet length Ethernet frames (ASIX hardware drops the 4 octet FCS field) and the 2nd Ethernet frame attempted to write off the end of the netdev buffer. Note that the netdev buffer should only contain 1 Ethernet frame so if an attempt to write 2 Ethernet frames into the buffer is made then that is wrong. However, the logic of the asix_rx_fixup_internal() only allows 1 Ethernet frame to be written into the netdev buffer. Potentially this failure was due to memory corruption because it was only seen once. b) Two-off failures in the NAPI layer's backlog queue: There were 2 crashes in the NAPI layer's backlog queue presumably after asix_rx_fixup_internal() called usbnet_skb_return(). [24097.273945] Unable to handle kernel NULL pointer dereference at virtual address 00000004 [24097.398944] PC is at process_backlog+0x80/0x16c [24097.569466] Backtrace: [24097.572007] [<8045ad98>] (process_backlog) from [<8045b64c>] (net_rx_action+0xcc/0x248) [24097.591631] [<8045b580>] (net_rx_action) from [<80028780>] (__do_softirq+0x15c/0x37c) [24097.610022] [<80028624>] (__do_softirq) from [<800289cc>] (run_ksoftirqd+0x2c/0x84) and [ 1059.828452] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 1059.953715] PC is at process_backlog+0x84/0x16c [ 1060.140896] Backtrace: [ 1060.143434] [<8045ad98>] (process_backlog) from [<8045b64c>] (net_rx_action+0xcc/0x248) [ 1060.163075] [<8045b580>] (net_rx_action) from [<80028780>] (__do_softirq+0x15c/0x37c) [ 1060.181474] [<80028624>] (__do_softirq) from [<80028c38>] (irq_exit+0x8c/0xe8) [ 1060.199256] [<80028bac>] (irq_exit) from [<8000e9c8>] (handle_IRQ+0x8c/0xc8) [ 1060.210006] [<8000e93c>] (handle_IRQ) from [<800085c8>] (gic_handle_irq+0xb8/0xf8) [ 1060.225492] [<80008510>] (gic_handle_irq) from [<8050de80>] (__irq_svc+0x40/0x70) The embedded board was only using an ASIX USB to Ethernet adaptor eth0. Analysis suggested that the doubly-linked list pointers of the backlog queue had been corrupted because one of the link pointers was NULL. Potentially this failure was due to memory corruption because it was only seen twice. Results of the ASIX driver code review ====================================== During the code review some weaknesses were observed in the ASIX driver and the following patches have been created to improve the robustness. Brief overview of the patches ----------------------------- 1. asix: Add rx->ax_skb = NULL after usbnet_skb_return() The current ASIX driver sends the received Ethernet frame to the NAPI layer of the network stack via the call to usbnet_skb_return() in asix_rx_fixup_internal() but retains the rx->ax_skb pointer to the netdev buffer. The driver no longer needs the rx->ax_skb pointer at this point because the NAPI layer now has the Ethernet frame. This means that asix_rx_fixup_internal() must not use rx->ax_skb after the call to usbnet_skb_return() because it could corrupt the handling of the Ethernet frame within the network layer. Therefore, to remove the risk of erroneous usage of rx->ax_skb, set rx->ax_skb to NULL after the call to usbnet_skb_return(). This avoids potential erroneous freeing of rx->ax_skb and erroneous writing to the netdev buffer. If the software now somehow inappropriately reused rx->ax_skb, then a NULL pointer dereference of rx->ax_skb would occur which makes investigation easier. 2. asix: Ensure asix_rx_fixup_info members are all reset This patch creates reset_asix_rx_fixup_info() to allow all the asix_rx_fixup_info structure members to be consistently reset to initial conditions. Call reset_asix_rx_fixup_info() upon each detectable error condition so that the next URB is processed from a known state. Otherwise, there is a risk that some members of the asix_rx_fixup_info structure may be incorrect after an error occurred so potentially leading to a malfunction. 3. asix: Fix small memory leak in ax88772_unbind() This patch creates asix_rx_fixup_common_free() to allow the rx->ax_skb to be freed when necessary. asix_rx_fixup_common_free() is called from ax88772_unbind() before the parent private data structure is freed. Without this patch, there is a risk of a small netdev buffer memory leak each time ax88772_unbind() is called during the reception of an Ethernet frame that spans across 2 URBs. Testing ======= The patches have been sanity tested on a 64-bit Linux laptop running kernel 4.13-rc2 with the 3 patches applied on top. The ASIX USB to Adaptor used for testing was (output of lsusb): ID 0b95:772b ASIX Electronics Corp. AX88772B Test #1 ------- The test ran a flood ping test script which slowly incremented the ICMP Echo Request's payload from 0 to 5000 octets. This eventually causes IPv4 fragmentation to occur which causes Ethernet frames to be sent very close to each other so increases the probability that an Ethernet frame will span 2 URBs. The test showed that all pings were successful. The test took about 15 minutes to complete. Test #2 ------- A script was run on the laptop to periodically run ifdown and ifup every second so that the ASIX USB to Adaptor was up for 1 second and down for 1 second. From a Linux PC connected to the laptop, the following ping command was used ping -f -s 5000 <ip address of laptop> The large ICMP payload causes IPv4 fragmentation resulting in multiple Ethernet frames per original IP packet. Kernel debug within the ASIX driver was enabled to see whether any ASIX errors were generated. The test was run for about 24 hours and no ASIX errors were seen. Patches ======= The 3 patches have been rebased off the net-next repo master branch with HEAD fbbeefdd net: fec: Allow reception of frames bigger than 1522 bytes ==================== Signed-off-by:
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Dean Jenkins authored
When Ethernet frames span mulitple URBs, the netdev buffer memory pointed to by the asix_rx_fixup_info structure remains allocated during the time gap between the 2 executions of asix_rx_fixup_internal(). This means that if ax88772_unbind() is called within this time gap to free the memory of the parent private data structure then a memory leak of the part filled netdev buffer memory will occur. Therefore, create a new function asix_rx_fixup_common_free() to free the memory of the netdev buffer and add a call to asix_rx_fixup_common_free() from inside ax88772_unbind(). Consequently when an unbind occurs part way through receiving an Ethernet frame, the netdev buffer memory that is holding part of the received Ethernet frame will now be freed. Signed-off-by:
Dean Jenkins <Dean_Jenkins@mentor.com> Signed-off-by:
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Dean Jenkins authored
There is a risk that the members of the structure asix_rx_fixup_info become unsynchronised leading to the possibility of a malfunction. For example, rx->split_head was not being set to false after an error was detected so potentially could cause a malformed 32-bit Data header word to be formed. Therefore add function reset_asix_rx_fixup_info() to reset all the members of asix_rx_fixup_info so that future processing will start with known initial conditions. Also, if (skb->len != offset) becomes true then call reset_asix_rx_fixup_info() so that the processing of the next URB starts with known initial conditions. Without the call, the check does nothing which potentially could lead to a malfunction when the next URB is processed. In addition, for robustness, call reset_asix_rx_fixup_info() before every error path's "return 0". This ensures that the next URB is processed from known initial conditions. Signed-off-by:
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Dean Jenkins authored
In asix_rx_fixup_internal() there is a risk that rx->ax_skb gets reused after passing the Ethernet frame into the network stack via usbnet_skb_return(). The risks include: a) asynchronously freeing rx->ax_skb after passing the netdev buffer to the NAPI layer which might corrupt the backlog queue. b) erroneously reusing rx->ax_skb such as calling skb_put_data() multiple times which causes writing off the end of the netdev buffer. Therefore add a defensive rx->ax_skb = NULL after usbnet_skb_return() so that it is not possible to free rx->ax_skb or to apply skb_put_data() too many times. Signed-off-by:
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