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2020-09-25cypto: mediatek - fix leaks in mtk_desc_ring_allocXiaoliang Pang
In the init loop, if an error occurs in function 'dma_alloc_coherent', then goto the err_cleanup section, after run i--, in the array ring, the struct mtk_ring with index i will not be released, causing memory leaks Fixes: 785e5c616c849 ("crypto: mediatek - Add crypto driver support for some MediaTek chips") Cc: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Xiaoliang Pang <dawning.pang@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-25hwrng: ingenic - Add hardware TRNG for Ingenic X1830周琰杰 (Zhou Yanjie)
Add X1830 SoC digital true random number generator driver. Tested-by: 周正 (Zhou Zheng) <sernia.zhou@foxmail.com> Co-developed-by: 漆鹏振 (Qi Pengzhen) <aric.pzqi@ingenic.com> Signed-off-by: 漆鹏振 (Qi Pengzhen) <aric.pzqi@ingenic.com> Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-25dt-bindings: RNG: Add Ingenic TRNG bindings.周琰杰 (Zhou Yanjie)
Add the TRNG bindings for the X1830 SoC from Ingenic. Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-24tcp: skip DSACKs with dubious sequence rangesPriyaranjan Jha
Currently, we use length of DSACKed range to compute number of delivered packets. And if sequence range in DSACK is corrupted, we can get bogus dsacked/acked count, and bogus cwnd. This patch put bounds on DSACKed range to skip update of data delivery and spurious retransmission information, if the DSACK is unlikely caused by sender's action: - DSACKed range shouldn't be greater than maximum advertised rwnd. - Total no. of DSACKed segments shouldn't be greater than total no. of retransmitted segs. Unlike spurious retransmits, network duplicates or corrupted DSACKs shouldn't be counted as delivery. Signed-off-by: Priyaranjan Jha <priyarjha@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-24net/fsl: quieten expected MDIO access failuresJamie Iles
MDIO reads can happen during PHY probing, and printing an error with dev_err can result in a large number of error messages during device probe. On a platform with a serial console this can result in excessively long boot times in a way that looks like an infinite loop when multiple busses are present. Since 0f183fd151c (net/fsl: enable extended scanning in xgmac_mdio) we perform more scanning so there are potentially more failures. Reduce the logging level to dev_dbg which is consistent with the Freescale enetc driver. Cc: Jeremy Linton <jeremy.linton@arm.com> Signed-off-by: Jamie Iles <jamie@nuviainc.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-24net: dsa: microchip: really look for phy-mode in port nodesHelmut Grohne
The previous implementation failed to account for the "ports" node. The actual port nodes are not child nodes of the switch node, but a "ports" node sits in between. Fixes: edecfa98f602 ("net: dsa: microchip: look for phy-mode in port nodes") Signed-off-by: Helmut Grohne <helmut.grohne@intenta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-24net/tls: race causes kernel panicRohit Maheshwari
BUG: kernel NULL pointer dereference, address: 00000000000000b8 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 80000008b6fef067 P4D 80000008b6fef067 PUD 8b6fe6067 PMD 0 Oops: 0000 [#1] SMP PTI CPU: 12 PID: 23871 Comm: kworker/12:80 Kdump: loaded Tainted: G S 5.9.0-rc3+ #1 Hardware name: Supermicro X10SRA-F/X10SRA-F, BIOS 2.1 03/29/2018 Workqueue: events tx_work_handler [tls] RIP: 0010:tx_work_handler+0x1b/0x70 [tls] Code: dc fe ff ff e8 16 d4 a3 f6 66 0f 1f 44 00 00 0f 1f 44 00 00 55 53 48 8b 6f 58 48 8b bd a0 04 00 00 48 85 ff 74 1c 48 8b 47 28 <48> 8b 90 b8 00 00 00 83 e2 02 75 0c f0 48 0f ba b0 b8 00 00 00 00 RSP: 0018:ffffa44ace61fe88 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff91da9e45cc30 RCX: dead000000000122 RDX: 0000000000000001 RSI: ffff91da9e45cc38 RDI: ffff91d95efac200 RBP: ffff91da133fd780 R08: 0000000000000000 R09: 000073746e657665 R10: 8080808080808080 R11: 0000000000000000 R12: ffff91dad7d30700 R13: ffff91dab6561080 R14: 0ffff91dad7d3070 R15: ffff91da9e45cc38 FS: 0000000000000000(0000) GS:ffff91dad7d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000000b8 CR3: 0000000906478003 CR4: 00000000003706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x1a7/0x370 worker_thread+0x30/0x370 ? process_one_work+0x370/0x370 kthread+0x114/0x130 ? kthread_park+0x80/0x80 ret_from_fork+0x22/0x30 tls_sw_release_resources_tx() waits for encrypt_pending, which can have race, so we need similar changes as in commit 0cada33241d9de205522e3858b18e506ca5cce2c here as well. Fixes: a42055e8d2c3 ("net/tls: Add support for async encryption of records for performance") Signed-off-by: Rohit Maheshwari <rohitm@chelsio.com> Acked-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-24net/ethernet/broadcom: fix spelling typoWang Qing
Modify the comment typo: "compliment" -> "complement". Signed-off-by: Wang Qing <wangqing@vivo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-24net: mscc: ocelot: fix fields offset in SG_CONFIG_REG_3Xiaoliang Yang
INIT_IPS and GATE_ENABLE fields have a wrong offset in SG_CONFIG_REG_3. This register is used by stream gate control of PSFP, and it has not been used before, because PSFP is not implemented in ocelot driver. Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-24net: dsa: felix: convert TAS link speed based on phylink speedXiaoliang Yang
state->speed holds a value of 10, 100, 1000 or 2500, but QSYS_TAG_CONFIG_LINK_SPEED expects a value of 0, 1, 2, 3. So convert the speed to a proper value. Fixes: de143c0e274b ("net: dsa: felix: Configure Time-Aware Scheduler via taprio offload") Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-24hinic: fix wrong return value of mac-set cmdLuo bin
It should also be regarded as an error when hw return status=4 for PF's setting mac cmd. Only if PF return status=4 to VF should this cmd be taken special treatment. Fixes: 7dd29ee12865 ("hinic: add sriov feature support") Signed-off-by: Luo bin <luobin9@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-24drivers/net/wan/x25_asy: Correct the ndo_open and ndo_stop functionsXie He
1. Move the lapb_register/lapb_unregister calls into the ndo_open/ndo_stop functions. This makes the LAPB protocol start/stop when the network interface starts/stops. When the network interface is down, the LAPB protocol shouldn't be running and the LAPB module shoudn't be generating control frames. 2. Move netif_start_queue/netif_stop_queue into the ndo_open/ndo_stop functions. This makes the TX queue start/stop when the network interface starts/stops. (netif_stop_queue was originally in the ndo_stop function. But to make the code look better, I created a new function to use as ndo_stop, and made it call the original ndo_stop function. I moved netif_stop_queue from the original ndo_stop function to the new ndo_stop function.) Cc: Martin Schiller <ms@dev.tdt.de> Signed-off-by: Xie He <xie.he.0141@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-24net/ipv4: always honour route mtu during forwardingMaciej Żenczykowski
Documentation/networking/ip-sysctl.txt:46 says: ip_forward_use_pmtu - BOOLEAN By default we don't trust protocol path MTUs while forwarding because they could be easily forged and can lead to unwanted fragmentation by the router. You only need to enable this if you have user-space software which tries to discover path mtus by itself and depends on the kernel honoring this information. This is normally not the case. Default: 0 (disabled) Possible values: 0 - disabled 1 - enabled Which makes it pretty clear that setting it to 1 is a potential security/safety/DoS issue, and yet it is entirely reasonable to want forwarded traffic to honour explicitly administrator configured route mtus (instead of defaulting to device mtu). Indeed, I can't think of a single reason why you wouldn't want to. Since you configured a route mtu you probably know better... It is pretty common to have a higher device mtu to allow receiving large (jumbo) frames, while having some routes via that interface (potentially including the default route to the internet) specify a lower mtu. Note that ipv6 forwarding uses device mtu unless the route is locked (in which case it will use the route mtu). This approach is not usable for IPv4 where an 'mtu lock' on a route also has the side effect of disabling TCP path mtu discovery via disabling the IPv4 DF (don't frag) bit on all outgoing frames. I'm not aware of a way to lock a route from an IPv6 RA, so that also potentially seems wrong. Signed-off-by: Maciej Żenczykowski <maze@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Willem de Bruijn <willemb@google.com> Cc: Lorenzo Colitti <lorenzo@google.com> Cc: Sunmeet Gill (Sunny) <sgill@quicinc.com> Cc: Vinay Paradkar <vparadka@qti.qualcomm.com> Cc: Tyler Wear <twear@quicinc.com> Cc: David Ahern <dsahern@kernel.org> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-24Merge branch 'net_sched-fix-a-UAF-in-tcf_action_init'David S. Miller
Cong Wang says: ==================== net_sched: fix a UAF in tcf_action_init() This patchset fixes a use-after-free triggered by syzbot. Please find more details in each patch description. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-24net_sched: commit action insertions togetherCong Wang
syzbot is able to trigger a failure case inside the loop in tcf_action_init(), and when this happens we clean up with tcf_action_destroy(). But, as these actions are already inserted into the global IDR, other parallel process could free them before tcf_action_destroy(), then we will trigger a use-after-free. Fix this by deferring the insertions even later, after the loop, and committing all the insertions in a separate loop, so we will never fail in the middle of the insertions any more. One side effect is that the window between alloction and final insertion becomes larger, now it is more likely that the loop in tcf_del_walker() sees the placeholder -EBUSY pointer. So we have to check for error pointer in tcf_del_walker(). Reported-and-tested-by: syzbot+2287853d392e4b42374a@syzkaller.appspotmail.com Fixes: 0190c1d452a9 ("net: sched: atomically check-allocate action") Cc: Vlad Buslov <vladbu@mellanox.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-24net_sched: defer tcf_idr_insert() in tcf_action_init_1()Cong Wang
All TC actions call tcf_idr_insert() for new action at the end of their ->init(), so we can actually move it to a central place in tcf_action_init_1(). And once the action is inserted into the global IDR, other parallel process could free it immediately as its refcnt is still 1, so we can not fail after this, we need to move it after the goto action validation to avoid handling the failure case after insertion. This is found during code review, is not directly triggered by syzbot. And this prepares for the next patch. Cc: Vlad Buslov <vladbu@mellanox.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-25Merge tag 'drm-misc-fixes-2020-09-24' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-misc into drm-fixes drm-misc-fixes for v5.9: - Single null pointer deref fix for dma-buf. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/4106c21e-f52c-4c05-6cdb-daa743bb8617@linux.intel.com
2020-09-25Merge tag 'drm-intel-fixes-2020-09-24' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-intel into drm-fixes drm/i915 fixes for v5.9-rc7: - Fix selftest reference to stack data out of scope - Fix GVT null pointer dereference - Backmerge from Linus' master to fix build Signed-off-by: Dave Airlie <airlied@redhat.com> From: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/87zh5fpmha.fsf@intel.com
2020-09-25BackMerge commit '98477740630f270aecf648f1d6a9dbc6027d4ff1' into drm-fixesDave Airlie
The dax mess had some fallout, and i915 used a later base to fix their CI. Signed-off-by: Dave Airlie <airlied@redhat.com>
2020-09-24ep_create_wakeup_source(): dentry name can change under you...Al Viro
or get freed, for that matter, if it's a long (separately stored) name. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-09-24timers: Mask invalid flags in do_init_timer()Qianli Zhao
do_init_timer() accepts any combination of timer flags handed in by the caller without a sanity check, but only TIMER_DEFFERABLE, TIMER_PINNED and TIMER_IRQSAFE are valid. If the supplied flags have other bits set, this could result in malfunction. If bits are set in TIMER_CPUMASK the first timer usage could deference a cpu base which is outside the range of possible CPUs. If TIMER_MIGRATION is set, then the switch_timer_base() will live lock. Prevent that with a sanity check which warns when invalid flags are supplied and masks them out. [ tglx: Made it WARN_ON_ONCE() and added context to the changelog ] Signed-off-by: Qianli Zhao <zhaoqianli@xiaomi.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/9d79a8aa4eb56713af7379f99f062dedabcde140.1597326756.git.zhaoqianli@xiaomi.com
2020-09-24treewide: Make all debug_obj_descriptors constStephen Boyd
This should make it harder for the kernel to corrupt the debug object descriptor, used to call functions to fixup state and track debug objects, by moving the structure to read-only memory. Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20200815004027.2046113-3-swboyd@chromium.org
2020-09-24debugobjects: Allow debug_obj_descr to be constStephen Boyd
The debugobject core could be slightly harder to corrupt if the debug_obj_descr would be a pointer to const memory. Depending on the architecture, const data structures are placed into read-only memory and thus are harder to corrupt or hijack. This descriptor is used to fix up stuff like timers and workqueues when core kernel data structures are busted, so moving the descriptors to read-only memory will make debugobjects more resilient to something going wrong and then corrupting the function pointers inside struct debug_obj_descr. Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20200815004027.2046113-2-swboyd@chromium.org
2020-09-24Merge tag 'nvme-5.9-2020-09-24' of git://git.infradead.org/nvme into block-5.9Jens Axboe
Pull NVMe fixes from Christoph: "nvme fixes for 5.9 - fix error during controller probe that cause double free irqs (Keith Busch) - FC connection establishment fix (James Smart) - properly handle completions for invalid tags (Xianting Tian) - pass the correct nsid to the command effects and supported log (Chaitanya Kulkarni)" * tag 'nvme-5.9-2020-09-24' of git://git.infradead.org/nvme: nvme-core: don't use NVME_NSID_ALL for command effects and supported log nvme-fc: fail new connections to a deleted host or remote port nvme-pci: fix NULL req in completion handler nvme: return errors for hwmon init
2020-09-24KVM: x86: fix MSR_IA32_TSC read for nested migrationMaxim Levitsky
MSR reads/writes should always access the L1 state, since the (nested) hypervisor should intercept all the msrs it wants to adjust, and these that it doesn't should be read by the guest as if the host had read it. However IA32_TSC is an exception. Even when not intercepted, guest still reads the value + TSC offset. The write however does not take any TSC offset into account. This is documented in Intel's SDM and seems also to happen on AMD as well. This creates a problem when userspace wants to read the IA32_TSC value and then write it. (e.g for migration) In this case it reads L2 value but write is interpreted as an L1 value. To fix this make the userspace initiated reads of IA32_TSC return L1 value as well. Huge thanks to Dave Gilbert for helping me understand this very confusing semantic of MSR writes. Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Message-Id: <20200921103805.9102-2-mlevitsk@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-09-24libbpf: Fix XDP program load regression for old kernelsAndrii Nakryiko
Fix regression in libbpf, introduced by XDP link change, which causes XDP programs to fail to be loaded into kernel due to specified BPF_XDP expected_attach_type. While kernel doesn't enforce expected_attach_type for BPF_PROG_TYPE_XDP, some old kernels already support XDP program, but they don't yet recognize expected_attach_type field in bpf_attr, so setting it to non-zero value causes program load to fail. Luckily, libbpf already has a mechanism to deal with such cases, so just make expected_attach_type optional for XDP programs. Fixes: dc8698cac7aa ("libbpf: Add support for BPF XDP link") Reported-by: Nikita Shirokov <tehnerd@tehnerd.com> Reported-by: Udip Pant <udippant@fb.com> Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200924171705.3803628-1-andriin@fb.com
2020-09-24docs: trace: ring-buffer-design.rst: use the new SPDX tagMauro Carvalho Chehab
SPDX v3.10 gained support for GFDL-1.2 with no invariant sections: https://spdx.org/licenses/GFDL-1.2-no-invariants-only.html Let's use it, instead of keeping a license text for this file. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: https://lore.kernel.org/r/dbc9bd9ab30c6862e465343239e82102cbdc0f39.1599628249.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Documentation: kernel-parameters: clarify "module." parametersRandy Dunlap
The command-line parameters "dyndbg" and "async_probe" are not parameters for kernel/module.c but instead they are for the module that is being loaded. Try to make that distinction in the help text. OTOH, "module.sig_enforce" is handled as a parameter of kernel/module.c so "module." is correct for it. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jessica Yu <jeyu@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/r/67d40b6d-c073-a3bf-cbb6-6cad941cceeb@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Fix references to nommu-mmap.rstStephen Kitt
nommu-mmap.rst was moved to Documentation/admin-guide/mm; this patch updates the remaining stale references to Documentation/mm. Fixes: 800c02f5d030 ("docs: move nommu-mmap.txt to admin-guide and rename to ReST") Signed-off-by: Stephen Kitt <steve@sk2.org> Link: https://lore.kernel.org/r/20200812092230.27541-1-steve@sk2.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24docs: rewrite admin-guide/sysctl/abi.rstStephen Kitt
Following the structure used in sysctl/kernel.rst, this updates abi.rst to use ReStructured Text more fully and updates the entries to match current kernels: * the list of files is now the table of contents; * links are used to point to other documentation and other sections; * all the existing entries are no longer present, so this removes them; * document vsyscall32. Mentions of the kernel version are dropped. Since the document is entirely rewritten, I've replaced the copyright statement. Signed-off-by: Stephen Kitt <steve@sk2.org> Link: https://lore.kernel.org/r/20200917072123.8847-1-steve@sk2.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24docs: fb: Remove vesafb scrollback boot optionBhaskar Chowdhury
In commit 50145474f6ef ("fbcon: remove soft scrollback code"), the framebuffer scrollback mode was removed, but the documentation was not updated. Properly update the documentation by removing the option that is no longer present,remove the scrollback option. Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/799e4d6ecca9aab53e823fc0001887d728be0aa5.1600333774.git.unixbhaskar@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24docs: fb: Remove sstfb scrollback boot optionBhaskar Chowdhury
In commit 50145474f6ef ("fbcon: remove soft scrollback code"), the framebuffer scrollback mode was removed, but the documentation was not updated. Properly update the documentation by removing the option that is no longer present i.e remove a stanza related to scrollback. Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/d7e3e91ca0282d7e33a29476e51c1dd75aa1675f.1600333774.git.unixbhaskar@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24docs: fb: Remove matroxfb scrollback boot optionBhaskar Chowdhury
In commit 50145474f6ef ("fbcon: remove soft scrollback code"), the framebuffer scrollback mode was removed, but the documentation was not updated. Properly update the documentation by removing the option that is no longer pressent, and removed the particular scrollback option. Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/e5187e70faf8237825a142313802983a6c214baa.1600333774.git.unixbhaskar@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24docs: fb: Remove framebuffer scrollback boot optionBhaskar Chowdhury
In commit 50145474f6ef ("fbcon: remove soft scrollback code"), the framebuffer scrollback mode was removed, but the documentation was not updated. Properly update the documentation by removing the option that is no longer present, and update the section numbering because of the removal. Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/436cc046a8ff9cf2a467b633527db77dc7c7de19.1600333774.git.unixbhaskar@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24docs: replace the old User Mode Linux HowTo with a new oneAnton Ivanov
The new HowTo migrates the portions of the old howto which are still relevant to a new document, updates them to linux 5.x and adds documentation for vector transports and other new features. Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Link: https://lore.kernel.org/r/20200917103557.26063-1-anton.ivanov@cambridgegreys.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Documentation/admin-guide: blockdev/ramdisk: remove use of "rdev"Randy Dunlap
Remove use of "rdev" from blockdev/ramdisk.rst and update admin-guide/kernel-parameters.txt. "rdev" is considered antiquated, ancient, archaic, obsolete, deprecated {choose any or all}. "rdev" was removed from util-linux in 2010: https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/?id=a3e40c14651fccf18e7954f081e601389baefe3f Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Karel Zak <kzak@redhat.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: linux-block@vger.kernel.org Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Martin Mares <mj@ucw.cz> Cc: linux-video@atrey.karlin.mff.cuni.cz Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/r/20200918015640.8439-3-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Documentation/admin-guide: README & svga: remove use of "rdev"Randy Dunlap
"rdev" is considered antiquated, ancient, archaic, obsolete, deprecated {choose any or all}. Remove use of "rdev" and "vidmode" (a symlink to rdev) in admin-guide/README.rst and admin-guide/svga.rst. "rdev" was removed from util-linux in 2010: https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/?id=a3e40c14651fccf18e7954f081e601389baefe3f Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Martin Mares <mj@ucw.cz> Cc: Karel Zak <kzak@redhat.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: linux-block@vger.kernel.org Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Martin Mares <mj@ucw.cz> Cc: linux-video@atrey.karlin.mff.cuni.cz Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/r/20200918015640.8439-2-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Documentation/admin-guide: kernel-parameters: capitalize KorinaRandy Dunlap
Fix typo, capitalize Korina proper noun. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/r/20200918054722.28713-1-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Documentation: admin-guide: kernel-parameters: reformat "lapic=" boot optionRandy Dunlap
Reformat "lapic=" to try to make it more understandable and similar to the style that is mostly used in this file. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20200918054739.2523-1-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Documentation/admin-guide: kernel-parameters: fix "io7" parameter descriptionRandy Dunlap
Fix punctuation and capitalization for the "io7" boot parameter. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/r/20200918054751.6538-1-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Documentation/admin-guide: kernel-parameters: fix "disable_ddw" wordingRandy Dunlap
Drop and extraneous word (if) in a sentence. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/r/20200918054803.6588-1-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Documentation: Remove CMA's dependency on architectureTian Tao
CMA only depends on MMU. It doesn't depend on arch too much. such as ARM, ARM64, X86, MIPS etc. so We remove the dependency of cma about the architecture in kernel-parameters.txt. Signed-off-by: Tian Tao <tiantao6@hisilicon.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/1600412758-60545-1-git-send-email-tiantao6@hisilicon.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24docs: admin-guide: update kdump documentation due to change of crash URLlijiang
Since crash utility has been moved to github, the original URL is no longer available. Let's update it accordingly. Suggested-by: Dave Young <dyoung@redhat.com> Signed-off-by: Lianbo Jiang <lijiang@redhat.com> Link: https://lore.kernel.org/r/a088bff5-1174-25fa-ac26-6e46795f4085@redhat.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Documentation: kernel-parameters: fix formatting of MIPS "machtype"Randy Dunlap
For the "machtype" boot parameter, fix word spacing, line wrap, and plural of "laptops". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Link: https://lore.kernel.org/r/c9059e35-188d-a749-1907-767b53479328@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Documentation: filesystems: mount_api: fix headingsRandy Dunlap
Fix capitalization in two headings, correct one verb, and demote one heading to a section heading. Fixes: 791a17ee1973 ("docs: filesystems: convert mount_api.txt to ReST") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/adaf123c-b394-f78c-53c0-671d7fda45e7@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Doc: admin-guide: Add entry for kvm_cma_resv_ratio kernel paramSatheesh Rajendran
Add document entry for kvm_cma_resv_ratio kernel param which is used to alter the KVM contiguous memory allocation percentage for hash pagetable allocation used by hash mode PowerPC KVM guests. Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Link: https://lore.kernel.org/r/20200921090220.14981-1-sathnaga@linux.vnet.ibm.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24documentation: arm: sunxi: Allwinner H2+/H3 updateWilken Gottwalt
Replaced the link to the datasheet by a link to the current version. Signed-off-by: Wilken Gottwalt <wilken.gottwalt@mailbox.org> Link: https://lore.kernel.org/r/20200923065954.GA22809@monster.powergraphx.local Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-24Merge tag 'mmc-v5.9-rc4-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc Pull MMC fix from Ulf Hansson: "Fix build warning in mmc_spi when CONFIG_HAS_DMA is unset" * tag 'mmc-v5.9-rc4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: mmc_spi: Fix mmc_spi_dma_alloc() return type for !HAS_DMA
2020-09-24Merge tag 'media/v5.9-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media fixes from Mauro Carvalho Chehab: - fix a regression at the CEC adapter core - two uAPI patches (one revert) for changes in this development cycle * tag 'media/v5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: media: dt-bindings: media: imx274: Convert to json-schema media: media/v4l2: remove V4L2_FLAG_MEMORY_NON_CONSISTENT flag media: cec-adap.c: don't use flush_scheduled_work()
2020-09-24Merge tag 'sound-5.9-rc7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "Just a handful small device-specific fixes including a couple of reverts" * tag 'sound-5.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: Revert "ALSA: usb-audio: Disable Lenovo P620 Rear line-in volume control" Revert "ALSA: hda - Fix silent audio output and corrupted input on MSI X570-A PRO" ALSA: usb-audio: Add delay quirk for H570e USB headsets ALSA: hda/realtek: Enable front panel headset LED on Lenovo ThinkStation P520 ALSA: hda/realtek - Couldn't detect Mic if booting with headset plugged ALSA: asihpi: fix iounmap in error handler
generated by cgit (git 2.34.1) at 2025-09-16 17:47:56 +0000