- 01 Oct, 2019 40 commits
-
-
Neal Cardwell authored
BugLink: https://bugs.launchpad.net/bugs/1845405 [ Upstream commit af38d07e ] Fix tcp_ecn_withdraw_cwr() to clear the correct bit: TCP_ECN_QUEUE_CWR. Rationale: basically, TCP_ECN_DEMAND_CWR is a bit that is purely about the behavior of data receivers, and deciding whether to reflect incoming IP ECN CE marks as outgoing TCP th->ece marks. The TCP_ECN_QUEUE_CWR bit is purely about the behavior of data senders, and deciding whether to send CWR. The tcp_ecn_withdraw_cwr() function is only called from tcp_undo_cwnd_reduction() by data senders during an undo, so it should zero the sender-side state, TCP_ECN_QUEUE_CWR. It does not make sense to stop the reflection of incoming CE bits on incoming data packets just because outgoing packets were spuriously retransmitted. The bug has been reproduced with packetdrill to manifest in a scenario with RFC3168 ECN, with an incoming data packet with CE bit set and carrying a TCP timestamp value that causes cwnd undo. Before this fix, the IP CE bit was ignored and not reflected in the TCP ECE header bit, and sender sent a TCP CWR ('W') bit on the next outgoing data packet, even though the cwnd reduction had been undone. After this fix, the sender properly reflects the CE bit and does not set the W bit. Note: the bug actually predates 2005 git history; this Fixes footer is chosen to be the oldest SHA1 I have tested (from Sep 2007) for which the patch applies cleanly (since before this commit the code was in a .h file). Fixes: bdf1ee5d ("[TCP]: Move code from tcp_ecn.h to tcp*.c and tcp.h & remove it") Signed-off-by:
Neal Cardwell <ncardwell@google.com> Acked-by:
Yuchung Cheng <ycheng@google.com> Acked-by:
Soheil Hassas Yeganeh <soheil@google.com> Cc: Eric Dumazet <edumazet@google.com> 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> Signed-off-by:
Connor Kuehl <connor.kuehl@canonical.com> Signed-off-by:
Kleber Sacilotto de Souza <kleber.souza@canonical.com>
-
Xin Long authored
BugLink: https://bugs.launchpad.net/bugs/1845405 [ Upstream commit 10eb56c5 ] Transport should use its own pf_retrans to do the error_count check, instead of asoc's. Otherwise, it's meaningless to make pf_retrans per transport. Fixes: 5aa93bcf ("sctp: Implement quick failover draft from tsvwg") Signed-off-by:
Xin Long <lucien.xin@gmail.com> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by:
Neil Horman <nhorman@tuxdriver.com> Signed-off-by:
-
Christophe JAILLET authored
BugLink: https://bugs.launchpad.net/bugs/1845405 [ Upstream commit b456d724 ] The '.exit' functions from 'pernet_operations' structure should be marked as __net_exit, not __net_init. Fixes: 8e2d61e0 ("sctp: fix race on protocol/netns initialization") Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by:
-
Cong Wang authored
BugLink: https://bugs.launchpad.net/bugs/1845405 [ Upstream commit d4d6ec6d ] In case of TCA_HHF_NON_HH_WEIGHT or TCA_HHF_QUANTUM is zero, it would make no progress inside the loop in hhf_dequeue() thus kernel would get stuck. Fix this by checking this corner case in hhf_change(). Fixes: 10239edf ("net-qdisc-hhf: Heavy-Hitter Filter (HHF) qdisc") Reported-by: syzbot+bc6297c11f19ee807dc2@syzkaller.appspotmail.com Reported-by: syzbot+041483004a7f45f1f20a@syzkaller.appspotmail.com Reported-by: syzbot+55be5f513bed37fc4367@syzkaller.appspotmail.com Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Cc: Terry Lam <vtlam@google.com> Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
-
Subash Abhinov Kasiviswanathan authored
BugLink: https://bugs.launchpad.net/bugs/1845405 [ Upstream commit 10cc514f ] In event of failure during register_netdevice, free_netdev is invoked immediately. free_netdev assumes that all the netdevice refcounts have been dropped prior to it being called and as a result frees and clears out the refcount pointer. However, this is not necessarily true as some of the operations in the NETDEV_UNREGISTER notifier handlers queue RCU callbacks for invocation after a grace period. The IPv4 callback in_dev_rcu_put tries to access the refcount after free_netdev is called which leads to a null de-reference- 44837.761523: <6> Unable to handle kernel paging request at virtual address 0000004a88287000 44837.761651: <2> pc : in_dev_finish_destroy+0x4c/0xc8 44837.761654: <2> lr : in_dev_finish_destroy+0x2c/0xc8 44837.762393: <2> Call trace: 44837.762398: <2> in_dev_finish_destroy+0x4c/0xc8 44837.762404: <2> in_dev_rcu_put+0x24/0x30 44837.762412: <2> rcu_nocb_kthread+0x43c/0x468 44837.762418: <2> kthread+0x118/0x128 44837.762424: <2> ret_from_fork+0x10/0x1c Fix this by waiting for the completion of the call_rcu() in case of register_netdevice errors. Fixes: 93ee31f1 ("[NET]: Fix free_netdev on register_netdev failure.") Cc: Sean Tranchetti <stranche@codeaurora.org> Signed-off-by:
Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Signed-off-by:
-
Eric Biggers authored
BugLink: https://bugs.launchpad.net/bugs/1845405 [ Upstream commit fe163e53 ] syzbot reported: BUG: KMSAN: uninit-value in capi_write+0x791/0xa90 drivers/isdn/capi/capi.c:700 CPU: 0 PID: 10025 Comm: syz-executor379 Not tainted 4.20.0-rc7+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x173/0x1d0 lib/dump_stack.c:113 kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:613 __msan_warning+0x82/0xf0 mm/kmsan/kmsan_instr.c:313 capi_write+0x791/0xa90 drivers/isdn/capi/capi.c:700 do_loop_readv_writev fs/read_write.c:703 [inline] do_iter_write+0x83e/0xd80 fs/read_write.c:961 vfs_writev fs/read_write.c:1004 [inline] do_writev+0x397/0x840 fs/read_write.c:1039 __do_sys_writev fs/read_write.c:1112 [inline] __se_sys_writev+0x9b/0xb0 fs/read_write.c:1109 __x64_sys_writev+0x4a/0x70 fs/read_write.c:1109 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 [...] The problem is that capi_write() is reading past the end of the message. Fix it by checking the message's length in the needed places. Reported-and-tested-by: syzbot+0849c524d9c634f5ae66@syzkaller.appspotmail.com Signed-off-by:
Eric Biggers <ebiggers@google.com> Signed-off-by:
-
Christophe JAILLET authored
BugLink: https://bugs.launchpad.net/bugs/1845405 [ Upstream commit d23dbc47 ] The '.exit' functions from 'pernet_operations' structure should be marked as __net_exit, not __net_init. Fixes: d862e546 ("net: ipv6: Implement /proc/net/icmp6.") Signed-off-by:
-
Bjørn Mork authored
BugLink: https://bugs.launchpad.net/bugs/1845405 [ Upstream commit 4d7ffcf3 ] A Mediatek based smartphone owner reports problems with USB tethering in Linux. The verbose USB listing shows a rndis_host interface pair (e0/01/03 + 10/00/00), but the driver fails to bind with [ 355.960428] usb 1-4: bad CDC descriptors The problem is a failsafe test intended to filter out ACM serial functions using the same 02/02/ff class/subclass/protocol as RNDIS. The serial functions are recognized by their non-zero bmCapabilities. No RNDIS function with non-zero bmCapabilities were known at the time this failsafe was added. But it turns out that some Wireless class RNDIS functions are using the bmCapabilities field. These functions are uniquely identified as RNDIS by their class/subclass/protocol, so the failing test can safely be disabled. The same applies to the two types of Misc class RNDIS functions. Applying the failsafe to Communication class functions only retains the original functionality, and fixes the problem for the Mediatek based smartphone. Tow examples of CDC functional descriptors with non-zero bmCapabilities from Wireless class RNDIS functions are: 0e8d:000a Mediatek Crosscall Spider X5 3G Phone CDC Header: bcdCDC 1.10 CDC ACM: bmCapabilities 0x0f connection notifications sends break line coding and serial state get/set/clear comm features CDC Union: bMasterInterface 0 bSlaveInterface 1 CDC Call Management: bmCapabilities 0x03 call management use DataInterface bDataInterface 1 and 19d2:1023 ZTE K4201-z CDC Header: bcdCDC 1.10 CDC ACM: bmCapabilities 0x02 line coding and serial state CDC Call Management: bmCapabilities 0x03 call management use DataInterface bDataInterface 1 CDC Union: bMasterInterface 0 bSlaveInterface 1 The Mediatek example is believed to apply to most smartphones with Mediatek firmware. The ZTE example is most likely also part of a larger family of devices/firmwares. Suggested-by:
Lars Melin <larsm17@gmail.com> Signed-off-by:
Bjørn Mork <bjorn@mork.no> Signed-off-by:
-
Nicolas Dichtel authored
BugLink: https://bugs.launchpad.net/bugs/1845405 [ Upstream commit 94a72b3f ] NLM_F_MULTI must be used only when a NLMSG_DONE message is sent at the end. In fact, NLMSG_DONE is sent only at the end of a dump. Libraries like libnl will wait forever for NLMSG_DONE. Fixes: 949f1e39 ("bridge: mdb: notify on router port add and del") CC: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by:
Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by:
-
Matt Delco authored
commit b60fe990 upstream. The first/last indexes are typically shared with a user app. The app can change the 'last' index that the kernel uses to store the next result. This change sanity checks the index before using it for writing to a potentially arbitrary address. This fixes CVE-2019-14821. Cc: stable@vger.kernel.org Fixes: 5f94c174 ("KVM: Add coalesced MMIO support (common part)") Signed-off-by:
Matt Delco <delco@chromium.org> Signed-off-by:
Jim Mattson <jmattson@google.com> Reported-by: syzbot+983c866c3dd6efa3662a@syzkaller.appspotmail.com [Use READ_ONCE. - Paolo] Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
Juerg Haefliger <juergh@canonical.com> Acked-by:
Tyler Hicks <tyhicks@canonical.com> Acked-by:
Sultan Alsawaf <sultan.alsawaf@canonical.com> Signed-off-by:
Khalid Elmously <khalid.elmously@canonical.com>
-
Greg Kroah-Hartman authored
BugLink: https://bugs.launchpad.net/bugs/1845395Signed-off-by:
-
Dave Jones authored
BugLink: https://bugs.launchpad.net/bugs/1845395 [ Upstream commit 6ae81ced ] Trinity and other fuzzers can hit this WARN on far too easily, resulting in a tainted kernel that hinders automated fuzzing. Replace it with a rate-limited printk. Signed-off-by:
Dave Jones <davej@codemonkey.org.uk> Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
-
Zhenzhong Duan authored
BugLink: https://bugs.launchpad.net/bugs/1845395 commit 8c5477e8 upstream. Kernel build warns: 'sanitize_boot_params' defined but not used [-Wunused-function] at below files: arch/x86/boot/compressed/cmdline.c arch/x86/boot/compressed/error.c arch/x86/boot/compressed/early_serial_console.c arch/x86/boot/compressed/acpi.c That's becausethey each include misc.h which includes a definition of sanitize_boot_params() via bootparam_utils.h. Remove the inclusion from misc.h and have the c file including bootparam_utils.h directly. Signed-off-by:
Zhenzhong Duan <zhenzhong.duan@oracle.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/1563283092-1189-1-git-send-email-zhenzhong.duan@oracle.com [nc: Fixed conflict around lack of 67b66625] Signed-off-by:
Nathan Chancellor <natechancellor@gmail.com> Signed-off-by:
-
Nathan Chancellor authored
BugLink: https://bugs.launchpad.net/bugs/1845395 [ Upstream commit 9c940bbe ] Clang warns after commit 8985167e ("clk: s2mps11: Fix matching when built as module and DT node contains compatible"): drivers/clk/clk-s2mps11.c:242:34: warning: variable 's2mps11_dt_match' is not needed and will not be emitted [-Wunneeded-internal-declaration] static const struct of_device_id s2mps11_dt_match[] = { ^ 1 warning generated. This warning happens when a variable is used in some construct that doesn't require a reference to that variable to be emitted in the symbol table; in this case, it's MODULE_DEVICE_TABLE, which only needs to hold the data of the variable, not the variable itself. $ nm -S drivers/clk/clk-s2mps11.o | rg s2mps11_dt_match 00000078 000003d4 R __mod_of__s2mps11_dt_match_device_table Normally, with device ID table variables, it means that the variable just needs to be tied to the device declaration at the bottom of the file, like s2mps11_clk_id: $ nm -S drivers/clk/clk-s2mps11.o | rg s2mps11_clk_id 00000000 00000078 R __mod_platform__s2mps11_clk_id_device_table 00000000 00000078 r s2mps11_clk_id However, because the comment above this deliberately doesn't want this variable added to .of_match_table, we need to mark s2mps11_dt_match as __used to silence this warning. This makes it clear to Clang that the variable is used for something, even if a reference to it isn't being emitted. Signed-off-by:
Stephen Boyd <sboyd@kernel.org> Signed-off-by:
-
Nicolas Boichat authored
BugLink: https://bugs.launchpad.net/bugs/1845395 [ Upstream commit 31013836 ] The basepath may contain special characters, which would confuse the regex matcher. ${var#prefix} does the right thing. Link: http://lkml.kernel.org/r/20190518055946.181563-1-drinkcat@chromium.org Fixes: 67a28de4 ("scripts/decode_stacktrace: only strip base path when a prefix of the path") Signed-off-by:
Nicolas Boichat <drinkcat@chromium.org> Reviewed-by:
Stephen Boyd <swboyd@chromium.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
-
Tiwei Bie authored
BugLink: https://bugs.launchpad.net/bugs/1845395 commit 264b563b upstream. Since vhost_exceeds_weight() was introduced, callers need to specify the packet weight and byte weight in vhost_dev_init(). Note that, the packet weight isn't counted in this patch to keep the original behavior unchanged. Fixes: e82b9b07 ("vhost: introduce vhost_exceeds_weight()") Cc: stable@vger.kernel.org Signed-off-by:
Tiwei Bie <tiwei.bie@intel.com> Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Acked-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
-
Cong Wang authored
BugLink: https://bugs.launchpad.net/bugs/1845395 commit dbb2483b upstream. In commit 6a53b759 ("xfrm: check id proto in validate_tmpl()") I introduced a check for xfrm protocol, but according to Herbert IPSEC_PROTO_ANY should only be used as a wildcard for lookup, so it should be removed from validate_tmpl(). And, IPSEC_PROTO_ANY is expected to only match 3 IPSec-specific protocols, this is why xfrm_state_flush() could still miss IPPROTO_ROUTING, which leads that those entries are left in net->xfrm.state_all before exit net. Fix this by replacing IPSEC_PROTO_ANY with zero. This patch also extracts the check from validate_tmpl() to xfrm_id_proto_valid() and uses it in parse_ipsecrequest(). With this, no other protocols should be added into xfrm. Fixes: 6a53b759 ("xfrm: check id proto in validate_tmpl()") Reported-by: syzbot+0bf0519d6e0de15914fe@syzkaller.appspotmail.com Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by:
Zubin Mithra <zsm@chromium.org> Signed-off-by:
-
Takashi Iwai authored
BugLink: https://bugs.launchpad.net/bugs/1845395 commit 89781d08 upstream. The recent change to shuffle the codec initialization procedure for Realtek via commit 607ca3bd ("ALSA: hda/realtek - EAPD turn on later") caused the silent output on some machines. This change was supposed to be safe, but it isn't actually; some devices have quirk setups to override the EAPD via COEF or BTL in the additional verb table, which is applied at the beginning of snd_hda_gen_init(). And this EAPD setup is again overridden in alc_auto_init_amp(). For recovering from the regression, tell snd_hda_gen_init() not to apply the verbs there by a new flag, then apply the verbs in alc_init(). BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=204727 Fixes: 607ca3bd ("ALSA: hda/realtek - EAPD turn on later") Cc: <stable@vger.kernel.org> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
-
Takashi Iwai authored
BugLink: https://bugs.launchpad.net/bugs/1845395 commit 333f3143 upstream. Since the chained quirks via chained_before flag is applied before the depth check, it may lead to the endless recursive calls, when the chain were set up incorrectly. Fix it by moving the depth check at the beginning of the loop. Fixes: 1f578250 ("ALSA: hda - Add chained_before flag to the fixup entry") Cc: <stable@vger.kernel.org> Signed-off-by:
-
Greg Kroah-Hartman authored
BugLink: https://bugs.launchpad.net/bugs/1845374Signed-off-by:
-
Chen-Yu Tsai authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 3b25528e ] The devicetree binding lists the phy phy as optional. As such, the driver should not bail out if it can't find a regulator. Instead it should just skip the remaining regulator related code and continue on normally. Skip the remainder of phy_power_on() if a regulator supply isn't available. This also gets rid of the bogus return code. Fixes: 2e12f536 ("net: stmmac: dwmac-rk: Use standard devicetree property for phy regulator") Signed-off-by:
Chen-Yu Tsai <wens@csie.org> Signed-off-by:
-
Feng Sun authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 2c1644cf ] After commit baeababb ("tun: return NET_XMIT_DROP for dropped packets"), when tun_net_xmit drop packets, it will free skb and return NET_XMIT_DROP, netpoll_send_skb_on_dev will run into following use after free cases: 1. retry netpoll_start_xmit with freed skb; 2. queue freed skb in npinfo->txq. queue_process will also run into use after free case. hit netpoll_send_skb_on_dev first case with following kernel log: [ 117.864773] kernel BUG at mm/slub.c:306! [ 117.864773] invalid opcode: 0000 [#1] SMP PTI [ 117.864774] CPU: 3 PID: 2627 Comm: loop_printmsg Kdump: loaded Tainted: P OE 5.3.0-050300rc5-generic #201908182231 [ 117.864775] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 117.864775] RIP: 0010:kmem_cache_free+0x28d/0x2b0 [ 117.864781] Call Trace: [ 117.864781] ? tun_net_xmit+0x21c/0x460 [ 117.864781] kfree_skbmem+0x4e/0x60 [ 117.864782] kfree_skb+0x3a/0xa0 [ 117.864782] tun_net_xmit+0x21c/0x460 [ 117.864782] netpoll_start_xmit+0x11d/0x1b0 [ 117.864788] netpoll_send_skb_on_dev+0x1b8/0x200 [ 117.864789] __br_forward+0x1b9/0x1e0 [bridge] [ 117.864789] ? skb_clone+0x53/0xd0 [ 117.864790] ? __skb_clone+0x2e/0x120 [ 117.864790] deliver_clone+0x37/0x50 [bridge] [ 117.864790] maybe_deliver+0x89/0xc0 [bridge] [ 117.864791] br_flood+0x6c/0x130 [bridge] [ 117.864791] br_dev_xmit+0x315/0x3c0 [bridge] [ 117.864792] netpoll_start_xmit+0x11d/0x1b0 [ 117.864792] netpoll_send_skb_on_dev+0x1b8/0x200 [ 117.864792] netpoll_send_udp+0x2c6/0x3e8 [ 117.864793] write_msg+0xd9/0xf0 [netconsole] [ 117.864793] console_unlock+0x386/0x4e0 [ 117.864793] vprintk_emit+0x17e/0x280 [ 117.864794] vprintk_default+0x29/0x50 [ 117.864794] vprintk_func+0x4c/0xbc [ 117.864794] printk+0x58/0x6f [ 117.864795] loop_fun+0x24/0x41 [printmsg_loop] [ 117.864795] kthread+0x104/0x140 [ 117.864795] ? 0xffffffffc05b1000 [ 117.864796] ? kthread_park+0x80/0x80 [ 117.864796] ret_from_fork+0x35/0x40 Signed-off-by:
Feng Sun <loyou85@gmail.com> Signed-off-by:
Xiaojun Zhao <xiaojunzhao141@gmail.com> Signed-off-by:
-
Linus Torvalds authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 950b07c1 ] This reverts commit 558682b5. Chris Wilson reports that it breaks his CPU hotplug test scripts. In particular, it breaks offlining and then re-onlining the boot CPU, which we treat specially (and the BIOS does too). The symptoms are that we can offline the CPU, but it then does not come back online again: smpboot: CPU 0 is now offline smpboot: Booting Node 0 Processor 0 APIC 0x0 smpboot: do_boot_cpu failed(-1) to wakeup CPU#0 Thomas says he knows why it's broken (my personal suspicion: our magic handling of the "cpu0_logical_apicid" thing), but for 5.3 the right fix is to just revert it, since we've never touched the LDR bits before, and it's not worth the risk to do anything else at this stage. [ Hotpluging of the boot CPU is special anyway, and should be off by default. See the "BOOTPARAM_HOTPLUG_CPU0" config option and the cpu0_hotplug kernel parameter. In general you should not do it, and it has various known limitations (hibernate and suspend require the boot CPU, for example). But it should work, even if the boot CPU is special and needs careful treatment - Linus ] Link: https://lore.kernel.org/lkml/156785100521.13300.14461504732265570003@skylake-alporthouse-com/Reported-by:
Chris Wilson <chris@chris-wilson.co.uk> Acked-by:
-
Martin Sperl authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 73b114ee ] On long running tests with a mcp2517fd can controller it showed that on rare occations the data read shows corruptions for longer spi transfers. Example of a 22 byte transfer: expected (as captured on logic analyzer): FF FF 78 00 00 00 08 06 00 00 91 20 77 56 84 85 86 87 88 89 8a 8b read by the driver: FF FF 78 00 00 00 08 06 00 00 91 20 77 56 84 88 89 8a 00 00 8b 9b To fix this use BCM2835_AUX_SPI_STAT_RX_LVL to determine when we may read data from the fifo reliably without any corruption. Surprisingly the only values ever empirically read in BCM2835_AUX_SPI_STAT_RX_LVL are 0x00, 0x10, 0x20 and 0x30. So whenever the mask is not 0 we can read from the fifo in a safe manner. The patch has now been tested intensively and we are no longer able to reproduce the "RX" issue any longer. Fixes: 1ea29b39 ("spi: bcm2835aux: add bcm2835 auxiliary spi device...") Reported-by:
Hubert Denkmair <h.denkmair@intence.de> Signed-off-by:
Martin Sperl <kernel@martin.sperl.org> Acked-by:
Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
-
Martin Sperl authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit c7de8500 ] This read of the fifo is a potential candidate for a race condition as the spi transfer is not necessarily finished and so can lead to an early read of the fifo that still misses data. So it has been removed. Fixes: 1ea29b39 ("spi: bcm2835aux: add bcm2835 auxiliary spi device...") Suggested-by:
-
Martin Sperl authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 7188a6f0 ] Sharing more code between polling and interrupt-driven mode. Signed-off-by:
-
Rob Herring authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit bc519d95 ] The BCM2835 AUX SPI has a shared interrupt line (with AUX UART). Downstream fixes this with an AUX irqchip to demux the IRQ sources and a DT change which breaks compatibility with older kernels. The AUX irqchip was already rejected for upstream[1] and the DT change would break working systems if the DTB is updated to a newer one. The latter issue was brought to my attention by Alex Graf. The root cause however is a bug in the shared handler. Shared handlers must check that interrupts are actually enabled before servicing the interrupt. Add a check that the TXEMPTY or IDLE interrupts are enabled. [1] https://patchwork.kernel.org/patch/9781221/ Cc: Alexander Graf <agraf@suse.de> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Mark Brown <broonie@kernel.org> Cc: Eric Anholt <eric@anholt.net> Cc: Stefan Wahren <stefan.wahren@i2se.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ray Jui <rjui@broadcom.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: bcm-kernel-feedback-list@broadcom.com Cc: linux-spi@vger.kernel.org Cc: linux-rpi-kernel@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by:
Rob Herring <robh@kernel.org> Reviewed-by:
Eric Anholt <eric@anholt.net> Signed-off-by:
-
Luis Henriques authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 5c498950 ] Signed-off-by:
Luis Henriques <lhenriques@suse.com> Reviewed-by:
Jeff Layton <jlayton@kernel.org> Signed-off-by:
Ilya Dryomov <idryomov@gmail.com> Signed-off-by:
-
Andrew Jones authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 2113c5f6 ] If after an MMIO exit to userspace a VCPU is immediately run with an immediate_exit request, such as when a signal is delivered or an MMIO emulation completion is needed, then the VCPU completes the MMIO emulation and immediately returns to userspace. As the exit_reason does not get changed from KVM_EXIT_MMIO in these cases we have to be careful not to complete the MMIO emulation again, when the VCPU is eventually run again, because the emulation does an instruction skip (and doing too many skips would be a waste of guest code :-) We need to use additional VCPU state to track if the emulation is complete. As luck would have it, we already have 'mmio_needed', which even appears to be used in this way by other architectures already. Fixes: 0d640732 ("arm64: KVM: Skip MMIO insn after emulation") Acked-by:
Mark Rutland <mark.rutland@arm.com> Signed-off-by:
Andrew Jones <drjones@redhat.com> Signed-off-by:
Marc Zyngier <maz@kernel.org> Signed-off-by:
-
Luis Henriques authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 86968ef2 ] Calling ceph_buffer_put() in __ceph_setxattr() may end up freeing the i_xattrs.prealloc_blob buffer while holding the i_ceph_lock. This can be fixed by postponing the call until later, when the lock is released. The following backtrace was triggered by fstests generic/117. BUG: sleeping function called from invalid context at mm/vmalloc.c:2283 in_atomic(): 1, irqs_disabled(): 0, pid: 650, name: fsstress 3 locks held by fsstress/650: #0: 00000000870a0fe8 (sb_writers#8){.+.+}, at: mnt_want_write+0x20/0x50 #1: 00000000ba0c4c74 (&type->i_mutex_dir_key#6){++++}, at: vfs_setxattr+0x55/0xa0 #2: 000000008dfbb3f2 (&(&ci->i_ceph_lock)->rlock){+.+.}, at: __ceph_setxattr+0x297/0x810 CPU: 1 PID: 650 Comm: fsstress Not tainted 5.2.0+ #437 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack+0x67/0x90 ___might_sleep.cold+0x9f/0xb1 vfree+0x4b/0x60 ceph_buffer_release+0x1b/0x60 __ceph_setxattr+0x2b4/0x810 __vfs_setxattr+0x66/0x80 __vfs_setxattr_noperm+0x59/0xf0 vfs_setxattr+0x81/0xa0 setxattr+0x115/0x230 ? filename_lookup+0xc9/0x140 ? rcu_read_lock_sched_held+0x74/0x80 ? rcu_sync_lockdep_assert+0x2e/0x60 ? __sb_start_write+0x142/0x1a0 ? mnt_want_write+0x20/0x50 path_setxattr+0xba/0xd0 __x64_sys_lsetxattr+0x24/0x30 do_syscall_64+0x50/0x1c0 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7ff23514359a Signed-off-by:
-
Wenwen Wang authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 5c1baaa8 ] In mlx4_ib_alloc_pv_bufs(), 'tun_qp->tx_ring' is allocated through kcalloc(). However, it is not always deallocated in the following execution if an error occurs, leading to memory leaks. To fix this issue, free 'tun_qp->tx_ring' whenever an error occurs. Signed-off-by:
Wenwen Wang <wenwen@cs.uga.edu> Acked-by:
Leon Romanovsky <leonro@mellanox.com> Link: https://lore.kernel.org/r/1566159781-4642-1-git-send-email-wenwen@cs.uga.eduSigned-off-by:
Doug Ledford <dledford@redhat.com> Signed-off-by:
-
Vitaly Kuznetsov authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 89eb4d8d ] When building hv_kvp_daemon GCC-8.3 complains: hv_kvp_daemon.c: In function ‘kvp_get_ip_info.constprop’: hv_kvp_daemon.c:812:30: warning: ‘ip_buffer’ may be used uninitialized in this function [-Wmaybe-uninitialized] struct hv_kvp_ipaddr_value *ip_buffer; this seems to be a false positive: we only use ip_buffer when op == KVP_OP_GET_IP_INFO and it is only unset when op == KVP_OP_ENUMERATE. Silence the warning by initializing ip_buffer to NULL. Signed-off-by:
Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by:
-
Tho Vu authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit cfef46d6 ] When a Tx timestamp is requested, a pointer to the skb is stored in the ravb_tstamp_skb struct. This was done without an skb_get. There exists the possibility that the skb could be freed by ravb_tx_free (when ravb_tx_free is called from ravb_start_xmit) before the timestamp was processed, leading to a use-after-free bug. Use skb_get when filling a ravb_tstamp_skb struct, and add appropriate frees/consumes when a ravb_tstamp_skb struct is freed. Fixes: c156633f ("Renesas Ethernet AVB driver proper") Signed-off-by:
Tho Vu <tho.vu.wh@rvc.renesas.com> Signed-off-by:
Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> Signed-off-by:
Simon Horman <horms+renesas@verge.net.au> Signed-off-by:
-
Wenwen Wang authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 44ef3a03 ] In i2400m_barker_db_init(), 'options_orig' is allocated through kstrdup() to hold the original command line options. Then, the options are parsed. However, if an error occurs during the parsing process, 'options_orig' is not deallocated, leading to a memory leak bug. To fix this issue, free 'options_orig' before returning the error. Signed-off-by:
-
Wenwen Wang authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit f1472cb0 ] In kalmia_init_and_get_ethernet_addr(), 'usb_buf' is allocated through kmalloc(). In the following execution, if the 'status' returned by kalmia_send_init_packet() is not 0, 'usb_buf' is not deallocated, leading to memory leaks. To fix this issue, add the 'out' label to free 'usb_buf'. Signed-off-by:
-
Wenwen Wang authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 1eca92ee ] In cx82310_bind(), 'dev->partial_data' is allocated through kmalloc(). Then, the execution waits for the firmware to become ready. If the firmware is not ready in time, the execution is terminated. However, the allocated 'dev->partial_data' is not deallocated on this path, leading to a memory leak bug. To fix this issue, free 'dev->partial_data' before returning the error. Signed-off-by:
-
Wenwen Wang authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 20fb7c7a ] In myri10ge_probe(), myri10ge_alloc_slices() is invoked to allocate slices related structures. Later on, myri10ge_request_irq() is used to get an irq. However, if this process fails, the allocated slices related structures are not deallocated, leading to memory leaks. To fix this issue, revise the target label of the goto statement to 'abort_with_slices'. Signed-off-by:
-
Wenwen Wang authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit c554336e ] In blocked_fl_write(), 't' is not deallocated if bitmap_parse_user() fails, leading to a memory leak bug. To fix this issue, free t before returning the error. Signed-off-by:
-
YueHaibing authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 68e03b85 ] when do randbuilding, I got this error: In file included from drivers/hwmon/pmbus/ucd9000.c:19:0: ./include/linux/gpio/driver.h:576:1: error: redefinition of gpiochip_add_pin_range gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, ^~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/hwmon/pmbus/ucd9000.c:18:0: ./include/linux/gpio.h:245:1: note: previous definition of gpiochip_add_pin_range was here gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, ^~~~~~~~~~~~~~~~~~~~~~ Reported-by:
Hulk Robot <hulkci@huawei.com> Fixes: 964cb341 ("gpio: move pincontrol calls to <linux/gpio/driver.h>") Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Link: https://lore.kernel.org/r/20190731123814.46624-1-yuehaibing@huawei.comSigned-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
-
Thomas Falcon authored
BugLink: https://bugs.launchpad.net/bugs/1845374 [ Upstream commit 66cf4710 ] The ibm,mac-address-filters property defines the maximum number of addresses the hypervisor's multicast filter list can support. It is encoded as a big-endian integer in the OF device tree, but the virtual ethernet driver does not convert it for use by little-endian systems. As a result, the driver is not behaving as it should on affected systems when a large number of multicast addresses are assigned to the device. Reported-by:
Hangbin Liu <liuhangbin@gmail.com> Signed-off-by:
Thomas Falcon <tlfalcon@linux.ibm.com> Signed-off-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by:
-
