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2021-05-25pinctrl: npcm: Align a few entries in the pin function tableJonathan Neuschäfer1-2/+2
The entries for GPIO 33 and 34 are not properly aligned. Fix the alignment. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Link: https://lore.kernel.org/r/20210513160947.1716185-1-j.neuschaefer@gmx.net Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-25pinctrl/amd: Add device HID for new AMD GPIO controllerMaximilian Luz1-0/+1
Add device HID AMDI0031 to the AMD GPIO controller driver match table. This controller can be found on Microsoft Surface Laptop 4 devices and seems similar enough that we can just copy the existing AMDI0030 entry. Cc: <stable@vger.kernel.org> # 5.10+ Tested-by: Sachi King <nakato@nakato.io> Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com> Link: https://lore.kernel.org/r/20210512210316.1982416-1-luzmaximilian@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-20dt-bindings: pinctrl: qcom-pmic-gpio: Add pm7325 supportsatya priya1-0/+2
Add compatible string for PM7325 pmic GPIO support to the Qualcomm PMIC GPIO binding. Signed-off-by: satya priya <skakit@codeaurora.org> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/1620817988-18809-3-git-send-email-skakit@codeaurora.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-20pinctrl: qcom: spmi-gpio: Add support for pm7325satya priya1-0/+1
Add compatible string for PM7325 pmic GPIO support to the Qualcomm PMIC GPIO driver. Signed-off-by: satya priya <skakit@codeaurora.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/1620817988-18809-2-git-send-email-skakit@codeaurora.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-20pinctrl: iproc-gpio: Remove redundant error printing in iproc_gpio_probe()Zhen Lei1-3/+1
When devm_ioremap_resource() fails, a clear enough error message will be printed by its subfunction __devm_ioremap_resource(). The error information contains the device name, failure cause, and possibly resource information. Therefore, remove the error printing here to simplify code and reduce the binary size. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Acked-by: Ray Jui <ray.jui@broadcom.com> Link: https://lore.kernel.org/r/20210511085126.4287-1-thunder.leizhen@huawei.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-20pinctrl: ocelot: Remove redundant error printing in ocelot_pinctrl_probe()Zhen Lei1-3/+1
When devm_ioremap_resource() fails, a clear enough error message will be printed by its subfunction __devm_ioremap_resource(). The error information contains the device name, failure cause, and possibly resource information. Therefore, remove the error printing here to simplify code and reduce the binary size. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/r/20210511090936.4452-1-thunder.leizhen@huawei.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-20pinctrl: Keep enum pin_config_param ordered by name (part 2)Andy Shevchenko1-10/+10
It seems the ordering is by name. Keep it that way. Here updating the entire list (there were two more options not in order). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210510194717.12255-1-andriy.shevchenko@linux.intel.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-20pinctrl: equilibrium: Add missing MODULE_DEVICE_TABLEBixuan Cui1-0/+1
This patch adds missing MODULE_DEVICE_TABLE definition which generates correct modalias for automatic loading of this driver when it is built as an external module. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Bixuan Cui <cuibixuan@huawei.com> Link: https://lore.kernel.org/r/20210508031502.53637-1-cuibixuan@huawei.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-19pinctrl: qcom: spmi-mpp: Add compatible for pmi8994Bjorn Andersson2-0/+2
The PMI8994 has 4 multi-purpose-pins, add a compatible for this hardware block to the MPP driver. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210429003751.224232-1-bjorn.andersson@linaro.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-19pinctrl: amd: Implement irq_set_wakeRaul E Rangel1-1/+31
This allows the OS to control which devices produce wake events. $ grep enabled /sys/kernel/irq/*/wakeup /sys/kernel/irq/24/wakeup:enabled Signed-off-by: Raul E Rangel <rrangel@chromium.org> Link: https://lore.kernel.org/r/20210429163341.1.I7631534622233689dd81410525e0dd617b9b2012@changeid Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-19dt-bindings: pinctrl: convert Broadcom Northstar to the json-schemaRafał Miłecki2-55/+94
Important: this change converts the binding as it is. It includes dependency on undocumented CRU that must be refactored. CRU must get documented and offset property has to be reworked. Above can (and will be) be handled once every CRU MFD subdevice gets documented properly (including the pinmux). Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210421182041.22636-1-zajec5@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-09Linux 5.13-rc1Linus Torvalds1-2/+2
2021-05-09fbmem: fix horribly incorrect placement of __maybe_unusedLinus Torvalds1-1/+1
Commit b9d79e4ca4ff ("fbmem: Mark proc_fb_seq_ops as __maybe_unused") places the '__maybe_unused' in an entirely incorrect location between the "struct" keyword and the structure name. It's a wonder that gcc accepts that silently, but clang quite reasonably warns about it: drivers/video/fbdev/core/fbmem.c:736:21: warning: attribute declaration must precede definition [-Wignored-attributes] static const struct __maybe_unused seq_operations proc_fb_seq_ops = { ^ Fix it. Cc: Guenter Roeck <linux@roeck-us.net> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-08Revert "bio: limit bio max size"Jens Axboe4-21/+3
This reverts commit cd2c7545ae1beac3b6aae033c7f31193b3255946. Alex reports that the commit causes corruption with LUKS on ext4. Revert it for now so that this can be investigated properly. Link: https://lore.kernel.org/linux-block/1620493841.bxdq8r5haw.none@localhost/ Reported-by: Alex Xu (Hello71) <alex_y_xu@yahoo.ca> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-05-08drm/i915/display: fix compiler warning about array overrunLinus Torvalds1-1/+12
intel_dp_check_mst_status() uses a 14-byte array to read the DPRX Event Status Indicator data, but then passes that buffer at offset 10 off as an argument to drm_dp_channel_eq_ok(). End result: there are only 4 bytes remaining of the buffer, yet drm_dp_channel_eq_ok() wants a 6-byte buffer. gcc-11 correctly warns about this case: drivers/gpu/drm/i915/display/intel_dp.c: In function ‘intel_dp_check_mst_status’: drivers/gpu/drm/i915/display/intel_dp.c:3491:22: warning: ‘drm_dp_channel_eq_ok’ reading 6 bytes from a region of size 4 [-Wstringop-overread] 3491 | !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/display/intel_dp.c:3491:22: note: referencing argument 1 of type ‘const u8 *’ {aka ‘const unsigned char *’} In file included from drivers/gpu/drm/i915/display/intel_dp.c:38: include/drm/drm_dp_helper.h:1466:6: note: in a call to function ‘drm_dp_channel_eq_ok’ 1466 | bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE], | ^~~~~~~~~~~~~~~~~~~~ 6:14 elapsed This commit just extends the original array by 2 zero-initialized bytes, avoiding the warning. There may be some underlying bug in here that caused this confusion, but this is at least no worse than the existing situation that could use random data off the stack. Cc: Jani Nikula <jani.nikula@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Dave Airlie <airlied@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-08smb3: if max_channels set to more than one channel request multichannelSteve French1-0/+3
Mounting with "multichannel" is obviously implied if user requested more than one channel on mount (ie mount parm max_channels>1). Currently both have to be specified. Fix that so that if max_channels is greater than 1 on mount, enable multichannel rather than silently falling back to non-multichannel. Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-By: Tom Talpey <tom@talpey.com> Cc: <stable@vger.kernel.org> # v5.11+ Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
2021-05-08smb3: do not attempt multichannel to server which does not support itSteve French1-0/+6
We were ignoring CAP_MULTI_CHANNEL in the server response - if the server doesn't support multichannel we should not be attempting it. See MS-SMB2 section 3.2.5.2 Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Reviewed-By: Tom Talpey <tom@talpey.com> Cc: <stable@vger.kernel.org> # v5.8+ Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-08smb3: when mounting with multichannel include it in requested capabilitiesSteve French1-0/+5
In the SMB3/SMB3.1.1 negotiate protocol request, we are supposed to advertise CAP_MULTICHANNEL capability when establishing multiple channels has been requested by the user doing the mount. See MS-SMB2 sections 2.2.3 and 3.2.5.2 Without setting it there is some risk that multichannel could fail if the server interpreted the field strictly. Reviewed-By: Tom Talpey <tom@talpey.com> Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Cc: <stable@vger.kernel.org> # v5.8+ Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-09linux/kconfig.h: replace IF_ENABLED() with PTR_IF() in <linux/kernel.h>Masahiro Yamada3-6/+5
<linux/kconfig.h> is included from all the kernel-space source files, including C, assembly, linker scripts. It is intended to contain a minimal set of macros to evaluate CONFIG options. IF_ENABLED() is an intruder here because (x ? y : z) is C code, which should not be included from assembly files or linker scripts. Also, <linux/kconfig.h> is no longer self-contained because NULL is defined in <linux/stddef.h>. Move IF_ENABLED() out to <linux/kernel.h> as PTR_IF(). PTF_IF() takes the general boolean expression instead of a CONFIG option so that it fits better in <linux/kernel.h>. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org>
2021-05-07atm: firestream: Use fallthrough pseudo-keywordWei Ming Chen1-0/+1
Add pseudo-keyword macro fallthrough[1] [1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Wei Ming Chen <jj251510319013@gmail.com> Link: https://lore.kernel.org/r/20210507123843.10602-1-jj251510319013@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-07net: stmmac: Do not enable RX FIFO overflow interruptsYannick Vignon2-18/+3
The RX FIFO overflows when the system is not able to process all received packets and they start accumulating (first in the DMA queue in memory, then in the FIFO). An interrupt is then raised for each overflowing packet and handled in stmmac_interrupt(). This is counter-productive, since it brings the system (or more likely, one CPU core) to its knees to process the FIFO overflow interrupts. stmmac_interrupt() handles overflow interrupts by writing the rx tail ptr into the corresponding hardware register (according to the MAC spec, this has the effect of restarting the MAC DMA). However, without freeing any rx descriptors, the DMA stops right away, and another overflow interrupt is raised as the FIFO overflows again. Since the DMA is already restarted at the end of stmmac_rx_refill() after freeing descriptors, disabling FIFO overflow interrupts and the corresponding handling code has no side effect, and eliminates the interrupt storm when the RX FIFO overflows. Signed-off-by: Yannick Vignon <yannick.vignon@nxp.com> Link: https://lore.kernel.org/r/20210506143312.20784-1-yannick.vignon@oss.nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-07mptcp: fix splat when closing unaccepted socketPaolo Abeni1-2/+1
If userspace exits before calling accept() on a listener that had at least one new connection ready, we get: Attempt to release TCP socket in state 8 This happens because the mptcp socket gets cloned when the TCP connection is ready, but the socket is never exposed to userspace. The client additionally sends a DATA_FIN, which brings connection into CLOSE_WAIT state. This in turn prevents the orphan+state reset fixup in mptcp_sock_destruct() from doing its job. Fixes: 3721b9b64676b ("mptcp: Track received DATA_FIN sequence number and add related helpers") Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/185 Tested-by: Florian Westphal <fw@strlen.de> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Link: https://lore.kernel.org/r/20210507001638.225468-1-mathew.j.martineau@linux.intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-07i40e: Remove LLDP frame filtersArkadiusz Kubalewski3-44/+0
Remove filters from being setup in case of software DCB and allow the LLDP frames to be properly transmitted to the wire. It is not possible to transmit the LLDP frame out of the port, if they are filtered by control VSI. This prohibits software LLDP agent properly communicate its DCB capabilities to the neighbors. Fixes: 4b208eaa8078 ("i40e: Add init and default config of software based DCB") Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com> Tested-by: Imam Hassan Reza Biswas <imam.hassan.reza.biswas@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-05-07i40e: Fix PHY type identifiers for 2.5G and 5G adaptersMateusz Palczewski4-11/+10
Unlike other supported adapters, 2.5G and 5G use different PHY type identifiers for reading/writing PHY settings and for reading link status. This commit introduces separate PHY identifiers for these two operation types. Fixes: 2e45d3f4677a ("i40e: Add support for X710 B/P & SFP+ cards") Signed-off-by: Dawid Lukwinski <dawid.lukwinski@intel.com> Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com> Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com> Tested-by: Dave Switzer <david.switzer@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-05-07i40e: fix the restart auto-negotiation after FEC modifiedJaroslaw Gawin1-1/+2
When FEC mode was changed the link didn't know it because the link was not reset and new parameters were not negotiated. Set a flag 'I40E_AQ_PHY_ENABLE_ATOMIC_LINK' in 'abilities' to restart the link and make it run with the new settings. Fixes: 1d96340196f1 ("i40e: Add support FEC configuration for Fortville 25G") Signed-off-by: Jaroslaw Gawin <jaroslawx.gawin@intel.com> Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com> Tested-by: Dave Switzer <david.switzer@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-05-07i40e: Fix use-after-free in i40e_client_subtask()Yunjian Wang1-0/+1
Currently the call to i40e_client_del_instance frees the object pf->cinst, however pf->cinst->lan_info is being accessed after the free. Fix this by adding the missing return. Addresses-Coverity: ("Read from pointer after free") Fixes: 7b0b1a6d0ac9 ("i40e: Disable iWARP VSI PETCP_ENA flag on netdev down events") Signed-off-by: Yunjian Wang <wangyunjian@huawei.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-05-07i40e: fix broken XDP supportMagnus Karlsson1-6/+2
Commit 12738ac4754e ("i40e: Fix sparse errors in i40e_txrx.c") broke XDP support in the i40e driver. That commit was fixing a sparse error in the code by introducing a new variable xdp_res instead of overloading this into the skb pointer. The problem is that the code later uses the skb pointer in if statements and these where not extended to also test for the new xdp_res variable. Fix this by adding the correct tests for xdp_res in these places. The skb pointer was used to store the result of the XDP program by overloading the results in the error pointer ERR_PTR(-result). Therefore, the allocation failure test that used to only test for !skb now need to be extended to also consider !xdp_res. i40e_cleanup_headers() had a check that based on the skb value being an error pointer, i.e. a result from the XDP program != XDP_PASS, and if so start to process a new packet immediately, instead of populating skb fields and sending the skb to the stack. This check is not needed anymore, since we have added an explicit test for xdp_res being set and if so just do continue to pick the next packet from the NIC. Fixes: 12738ac4754e ("i40e: Fix sparse errors in i40e_txrx.c") Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Tested-by: Jesper Dangaard Brouer <brouer@redhat.com> Reported-by: Jesper Dangaard Brouer <brouer@redhat.com> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-05-07netfilter: nftables: avoid potential overflows on 32bit archesEric Dumazet2-7/+10
User space could ask for very large hash tables, we need to make sure our size computations wont overflow. nf_tables_newset() needs to double check the u64 size will fit into size_t field. Fixes: 0ed6389c483d ("netfilter: nf_tables: rename set implementations") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2021-05-07netfilter: nftables: avoid overflows in nft_hash_buckets()Eric Dumazet1-1/+9
Number of buckets being stored in 32bit variables, we have to ensure that no overflows occur in nft_hash_buckets() syzbot injected a size == 0x40000000 and reported: UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13 shift exponent 64 is too large for 64-bit type 'long unsigned int' CPU: 1 PID: 29539 Comm: syz-executor.4 Not tainted 5.12.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:327 __roundup_pow_of_two include/linux/log2.h:57 [inline] nft_hash_buckets net/netfilter/nft_set_hash.c:411 [inline] nft_hash_estimate.cold+0x19/0x1e net/netfilter/nft_set_hash.c:652 nft_select_set_ops net/netfilter/nf_tables_api.c:3586 [inline] nf_tables_newset+0xe62/0x3110 net/netfilter/nf_tables_api.c:4322 nfnetlink_rcv_batch+0xa09/0x24b0 net/netfilter/nfnetlink.c:488 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:612 [inline] nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:630 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 Fixes: 0ed6389c483d ("netfilter: nf_tables: rename set implementations") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2021-05-07mm: fix typos in commentsLu Jialin3-3/+3
succed -> succeed in mm/hugetlb.c wil -> will in mm/mempolicy.c wit -> with in mm/page_alloc.c Retruns -> Returns in mm/page_vma_mapped.c confict -> conflict in mm/secretmem.c No functionality changed. Link: https://lkml.kernel.org/r/20210408140027.60623-1-lujialin4@huawei.com Signed-off-by: Lu Jialin <lujialin4@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07mm: fix typos in commentsIngo Molnar39-83/+83
Fix ~94 single-word typos in locking code comments, plus a few very obvious grammar mistakes. Link: https://lkml.kernel.org/r/20210322212624.GA1963421@gmail.com Link: https://lore.kernel.org/r/20210322205203.GB1959563@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Cc: Bhaskar Chowdhury <unixbhaskar@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07treewide: remove editor modelines and cruftMasahiro Yamada157-627/+110
The section "19) Editor modelines and other cruft" in Documentation/process/coding-style.rst clearly says, "Do not include any of these in source files." I recently receive a patch to explicitly add a new one. Let's do treewide cleanups, otherwise some people follow the existing code and attempt to upstream their favoriate editor setups. It is even nicer if scripts/checkpatch.pl can check it. If we like to impose coding style in an editor-independent manner, I think editorconfig (patch [1]) is a saner solution. [1] https://lore.kernel.org/lkml/20200703073143.423557-1-danny@kdrag0n.dev/ Link: https://lkml.kernel.org/r/20210324054457.1477489-1-masahiroy@kernel.org Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Miguel Ojeda <ojeda@kernel.org> [auxdisplay] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07ipc/sem.c: spelling fixBhaskar Chowdhury1-1/+1
s/purpuse/purpose/ Link: https://lkml.kernel.org/r/20210319221432.26631-1-unixbhaskar@gmail.com Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07fs: fat: fix spelling typo of valuesdingsenjie1-1/+1
vaules -> values Link: https://lkml.kernel.org/r/20210302034817.30384-1-dingsenjie@163.com Signed-off-by: dingsenjie <dingsenjie@yulong.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07kernel/sys.c: fix typoXiaofeng Cao1-7/+7
change 'infite' to 'infinite' change 'concurent' to 'concurrent' change 'memvers' to 'members' change 'decendants' to 'descendants' change 'argumets' to 'arguments' Link: https://lkml.kernel.org/r/20210316112904.10661-1-cxfcosmos@gmail.com Signed-off-by: Xiaofeng Cao <caoxiaofeng@yulong.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07kernel/up.c: fix typoBhaskar Chowdhury1-1/+1
s/condtions/conditions/ Link: https://lkml.kernel.org/r/20210317032732.3260835-1-unixbhaskar@gmail.com Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07kernel/user_namespace.c: fix typosXiaofeng Cao1-3/+3
change 'verifing' to 'verifying' change 'certaint' to 'certain' change 'approprpiate' to 'appropriate' Link: https://lkml.kernel.org/r/20210317100129.12440-1-caoxiaofeng@yulong.com Signed-off-by: Xiaofeng Cao <caoxiaofeng@yulong.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07kernel/umh.c: fix some spelling mistakeszhouchuangao1-3/+3
Fix some spelling mistakes, and modify the order of the parameter comments to be consistent with the order of the parameters passed to the function. Link: https://lkml.kernel.org/r/1615636139-4076-1-git-send-email-zhouchuangao@vivo.com Signed-off-by: zhouchuangao <zhouchuangao@vivo.com> Acked-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07include/linux/pgtable.h: few spelling fixesBhaskar Chowdhury1-5/+5
Few spelling fixes throughout the file. Link: https://lkml.kernel.org/r/20210318201404.6380-1-unixbhaskar@gmail.com Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07mm/slab.c: fix spelling mistake "disired" -> "desired"Colin Ian King1-1/+1
There is a spelling mistake in a comment. Fix it. Link: https://lkml.kernel.org/r/20210317094158.5762-1-colin.king@canonical.com Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07scripts/spelling.txt: add "overflw"Drew Fustini1-0/+1
Add typo "overflw" for "overflow". This typo was found and fixed in drivers/clocksource/timer-pistachio.c. Link: https://lore.kernel.org/lkml/20210305090315.384547-1-drew@beagleboard.org/ Link: https://lkml.kernel.org/r/20210305095151.388182-1-drew@beagleboard.org Signed-off-by: Drew Fustini <drew@beagleboard.org> Suggested-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07scripts/spelling.txt: Add "diabled" typozuoqilin1-0/+1
Increase "diabled" spelling error check. Link: https://lkml.kernel.org/r/20210304070106.2313-1-zuoqilin1@163.com Signed-off-by: zuoqilin <zuoqilin@yulong.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07scripts/spelling.txt: add "overlfow"Drew Fustini1-0/+1
Add typo "overlfow" for "overflow". This typo was found and fixed in net/sctp/tsnmap.c. Link: https://lore.kernel.org/netdev/20210304055548.56829-1-drew@beagleboard.org/ Link: https://lkml.kernel.org/r/20210304072657.64577-1-drew@beagleboard.org Signed-off-by: Drew Fustini <drew@beagleboard.org> Suggested-by: Kees Cook <keescook@chromium.org> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07arm: print alloc free paths for address in registersManinder Singh3-0/+13
In case of a use after free kernel oops, the freeing path of the object is required to debug futher. In most of cases the object address is present in one of the registers. Thus check the register's address and if it belongs to slab, print its alloc and free path. e.g. in the below issue register r6 belongs to slab, and a use after free issue occurred on one of its dereferenced values: Unable to handle kernel paging request at virtual address 6b6b6b6f .... pc : [<c0538afc>] lr : [<c0465674>] psr: 60000013 sp : c8927d40 ip : ffffefff fp : c8aa8020 r10: c8927e10 r9 : 00000001 r8 : 00400cc0 r7 : 00000000 r6 : c8ab0180 r5 : c1804a80 r4 : c8aa8008 r3 : c1a5661c r2 : 00000000 r1 : 6b6b6b6b r0 : c139bf48 ..... Register r6 information: slab kmalloc-64 start c8ab0140 data offset 64 pointer offset 0 size 64 allocated at meminfo_proc_show+0x40/0x4fc meminfo_proc_show+0x40/0x4fc seq_read_iter+0x18c/0x4c4 proc_reg_read_iter+0x84/0xac generic_file_splice_read+0xe8/0x17c splice_direct_to_actor+0xb8/0x290 do_splice_direct+0xa0/0xe0 do_sendfile+0x2d0/0x438 sys_sendfile64+0x12c/0x140 ret_fast_syscall+0x0/0x58 0xbeeacde4 Free path: meminfo_proc_show+0x5c/0x4fc seq_read_iter+0x18c/0x4c4 proc_reg_read_iter+0x84/0xac generic_file_splice_read+0xe8/0x17c splice_direct_to_actor+0xb8/0x290 do_splice_direct+0xa0/0xe0 do_sendfile+0x2d0/0x438 sys_sendfile64+0x12c/0x140 ret_fast_syscall+0x0/0x58 0xbeeacde4 Link: https://lkml.kernel.org/r/1615891032-29160-3-git-send-email-maninder1.s@samsung.com Co-developed-by: Vaneet Narang <v.narang@samsung.com> Signed-off-by: Vaneet Narang <v.narang@samsung.com> Signed-off-by: Maninder Singh <maninder1.s@samsung.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07mm/vmalloc: remove vwrite()David Hildenbrand3-126/+1
The last user (/dev/kmem) is gone. Let's drop it. Link: https://lkml.kernel.org/r/20210324102351.6932-4-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Hillf Danton <hdanton@sina.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Minchan Kim <minchan@kernel.org> Cc: huang ying <huang.ying.caritas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07mm: remove xlate_dev_kmem_ptr()David Hildenbrand13-76/+0
Since /dev/kmem has been removed, let's remove the xlate_dev_kmem_ptr() leftovers. Link: https://lkml.kernel.org/r/20210324102351.6932-3-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Brian Cain <bcain@codeaurora.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Helge Deller <deller@gmx.de> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Hildenbrand <david@redhat.com> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Mikulas Patocka <mpatocka@redhat.com> Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Palmer Dabbelt <palmerdabbelt@google.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Niklas Schnelle <schnelle@linux.ibm.com> Cc: Pierre Morel <pmorel@linux.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07drivers/char: remove /dev/kmem for goodDavid Hildenbrand25-264/+5
Patch series "drivers/char: remove /dev/kmem for good". Exploring /dev/kmem and /dev/mem in the context of memory hot(un)plug and memory ballooning, I started questioning the existence of /dev/kmem. Comparing it with the /proc/kcore implementation, it does not seem to be able to deal with things like a) Pages unmapped from the direct mapping (e.g., to be used by secretmem) -> kern_addr_valid(). virt_addr_valid() is not sufficient. b) Special cases like gart aperture memory that is not to be touched -> mem_pfn_is_ram() Unless I am missing something, it's at least broken in some cases and might fault/crash the machine. Looks like its existence has been questioned before in 2005 and 2010 [1], after ~11 additional years, it might make sense to revive the discussion. CONFIG_DEVKMEM is only enabled in a single defconfig (on purpose or by mistake?). All distributions disable it: in Ubuntu it has been disabled for more than 10 years, in Debian since 2.6.31, in Fedora at least starting with FC3, in RHEL starting with RHEL4, in SUSE starting from 15sp2, and OpenSUSE has it disabled as well. 1) /dev/kmem was popular for rootkits [2] before it got disabled basically everywhere. Ubuntu documents [3] "There is no modern user of /dev/kmem any more beyond attackers using it to load kernel rootkits.". RHEL documents in a BZ [5] "it served no practical purpose other than to serve as a potential security problem or to enable binary module drivers to access structures/functions they shouldn't be touching" 2) /proc/kcore is a decent interface to have a controlled way to read kernel memory for debugging puposes. (will need some extensions to deal with memory offlining/unplug, memory ballooning, and poisoned pages, though) 3) It might be useful for corner case debugging [1]. KDB/KGDB might be a better fit, especially, to write random memory; harder to shoot yourself into the foot. 4) "Kernel Memory Editor" [4] hasn't seen any updates since 2000 and seems to be incompatible with 64bit [1]. For educational purposes, /proc/kcore might be used to monitor value updates -- or older kernels can be used. 5) It's broken on arm64, and therefore, completely disabled there. Looks like it's essentially unused and has been replaced by better suited interfaces for individual tasks (/proc/kcore, KDB/KGDB). Let's just remove it. [1] https://lwn.net/Articles/147901/ [2] https://www.linuxjournal.com/article/10505 [3] https://wiki.ubuntu.com/Security/Features#A.2Fdev.2Fkmem_disabled [4] https://sourceforge.net/projects/kme/ [5] https://bugzilla.redhat.com/show_bug.cgi?id=154796 Link: https://lkml.kernel.org/r/20210324102351.6932-1-david@redhat.com Link: https://lkml.kernel.org/r/20210324102351.6932-2-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Alexander A. Klimov" <grandmaster@al2klimov.de> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Brian Cain <bcain@codeaurora.org> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Chris Zankel <chris@zankel.net> Cc: Corentin Labbe <clabbe@baylibre.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Greentime Hu <green.hu@gmail.com> Cc: Gregory Clement <gregory.clement@bootlin.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Hillf Danton <hdanton@sina.com> Cc: huang ying <huang.ying.caritas@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: James Troup <james.troup@canonical.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kairui Song <kasong@redhat.com> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Cc: Liviu Dudau <liviu.dudau@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Mike Rapoport <rppt@kernel.org> Cc: Mikulas Patocka <mpatocka@redhat.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Niklas Schnelle <schnelle@linux.ibm.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: openrisc@lists.librecores.org Cc: Palmer Dabbelt <palmerdabbelt@google.com> Cc: Paul Mackerras <paulus@samba.org> Cc: "Pavel Machek (CIP)" <pavel@denx.de> Cc: Pavel Machek <pavel@ucw.cz> Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org> Cc: Pierre Morel <pmorel@linux.ibm.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Rich Felker <dalias@libc.org> Cc: Robert Richter <rric@kernel.org> Cc: Rob Herring <robh@kernel.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Cc: sparclinux@vger.kernel.org Cc: Stafford Horne <shorne@gmail.com> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Theodore Dubois <tblodt@icloud.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: William Cohen <wcohen@redhat.com> Cc: Xiaoming Ni <nixiaoming@huawei.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07mm: fix some typos and code style problemsShijie Luo7-9/+9
fix some typos and code style problems in mm. gfp.h: s/MAXNODES/MAX_NUMNODES mmzone.h: s/then/than rmap.c: s/__vma_split()/__vma_adjust() swap.c: s/__mod_zone_page_stat/__mod_zone_page_state, s/is is/is swap_state.c: s/whoes/whose z3fold.c: code style problem fix in z3fold_unregister_migration zsmalloc.c: s/of/or, s/give/given Link: https://lkml.kernel.org/r/20210419083057.64820-1-luoshijie1@huawei.com Signed-off-by: Shijie Luo <luoshijie1@huawei.com> Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07ipc/sem.c: mundane typo fixesBhaskar Chowdhury1-5/+5
s/runtine/runtime/ s/AQUIRE/ACQUIRE/ s/seperately/separately/ s/wont/won\'t/ s/succesfull/successful/ Link: https://lkml.kernel.org/r/20210326022240.26375-1-unixbhaskar@gmail.com Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07modules: add CONFIG_MODPROBE_PATHRasmus Villemoes2-1/+13
Allow the developer to specifiy the initial value of the modprobe_path[] string. This can be used to set it to the empty string initially, thus effectively disabling request_module() during early boot until userspace writes a new value via the /proc/sys/kernel/modprobe interface. [1] When building a custom kernel (often for an embedded target), it's normal to build everything into the kernel that is needed for booting, and indeed the initramfs often contains no modules at all, so every such request_module() done before userspace init has mounted the real rootfs is a waste of time. This is particularly useful when combined with the previous patch, which made the initramfs unpacking asynchronous - for that to work, it had to make any usermodehelper call wait for the unpacking to finish before attempting to invoke the userspace helper. By eliminating all such (known-to-be-futile) calls of usermodehelper, the initramfs unpacking and the {device,late}_initcalls can proceed in parallel for much longer. For a relatively slow ppc board I'm working on, the two patches combined lead to 0.2s faster boot - but more importantly, the fact that the initramfs unpacking proceeds completely in the background while devices get probed means I get to handle the gpio watchdog in time without getting reset. [1] __request_module() already has an early -ENOENT return when modprobe_path is the empty string. Link: https://lkml.kernel.org/r/20210313212528.2956377-3-linux@rasmusvillemoes.dk Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Jessica Yu <jeyu@kernel.org> Acked-by: Luis Chamberlain <mcgrof@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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