diff options
-rw-r--r-- | Documentation/core-api/idr.rst | 2 | ||||
-rw-r--r-- | LICENSES/other/CC-BY-SA-4.0 | 397 | ||||
-rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 10 | ||||
-rw-r--r-- | drivers/gpu/drm/drm_edid.c | 5 | ||||
-rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 91 | ||||
-rw-r--r-- | drivers/infiniband/core/ucm.c | 3 | ||||
-rw-r--r-- | drivers/infiniband/core/ucma.c | 3 | ||||
-rw-r--r-- | fs/cachefiles/namei.c | 2 | ||||
-rw-r--r-- | fs/fscache/cookie.c | 31 | ||||
-rw-r--r-- | fs/fscache/internal.h | 1 | ||||
-rw-r--r-- | fs/fscache/main.c | 4 | ||||
-rw-r--r-- | include/drm/drm_edid.h | 6 | ||||
-rw-r--r-- | include/linux/huge_mm.h | 2 | ||||
-rw-r--r-- | include/linux/module.h | 3 | ||||
-rw-r--r-- | include/linux/tracepoint-defs.h | 6 | ||||
-rw-r--r-- | include/linux/tracepoint.h | 36 | ||||
-rw-r--r-- | kernel/trace/preemptirq_delay_test.c | 10 | ||||
-rw-r--r-- | kernel/tracepoint.c | 24 | ||||
-rw-r--r-- | lib/test_ida.c | 4 | ||||
-rw-r--r-- | mm/huge_memory.c | 10 | ||||
-rw-r--r-- | mm/mremap.c | 30 |
21 files changed, 123 insertions, 557 deletions
diff --git a/Documentation/core-api/idr.rst b/Documentation/core-api/idr.rst index d351e880a2f6..a2738050c4f0 100644 --- a/Documentation/core-api/idr.rst +++ b/Documentation/core-api/idr.rst @@ -1,4 +1,4 @@ -.. SPDX-License-Identifier: CC-BY-SA-4.0 +.. SPDX-License-Identifier: GPL-2.0+ ============= ID Allocation diff --git a/LICENSES/other/CC-BY-SA-4.0 b/LICENSES/other/CC-BY-SA-4.0 deleted file mode 100644 index f9158e831e79..000000000000 --- a/LICENSES/other/CC-BY-SA-4.0 +++ /dev/null @@ -1,397 +0,0 @@ -Valid-License-Identifier: CC-BY-SA-4.0 -SPDX-URL: https://spdx.org/licenses/CC-BY-SA-4.0 -Usage-Guide: - To use the Creative Commons Attribution Share Alike 4.0 International - license put the following SPDX tag/value pair into a comment according to - the placement guidelines in the licensing rules documentation: - SPDX-License-Identifier: CC-BY-SA-4.0 -License-Text: - -Creative Commons Attribution-ShareAlike 4.0 International - -Creative Commons Corporation ("Creative Commons") is not a law firm and -does not provide legal services or legal advice. Distribution of Creative -Commons public licenses does not create a lawyer-client or other -relationship. Creative Commons makes its licenses and related information -available on an "as-is" basis. Creative Commons gives no warranties -regarding its licenses, any material licensed under their terms and -conditions, or any related information. Creative Commons disclaims all -liability for damages resulting from their use to the fullest extent -possible. - -Using Creative Commons Public Licenses - -Creative Commons public licenses provide a standard set of terms and -conditions that creators and other rights holders may use to share original -works of authorship and other material subject to copyright and certain -other rights specified in the public license below. The following -considerations are for informational purposes only, are not exhaustive, and -do not form part of our licenses. - -Considerations for licensors: Our public licenses are intended for use by -those authorized to give the public permission to use material in ways -otherwise restricted by copyright and certain other rights. Our licenses -are irrevocable. Licensors should read and understand the terms and -conditions of the license they choose before applying it. Licensors should -also secure all rights necessary before applying our licenses so that the -public can reuse the material as expected. Licensors should clearly mark -any material not subject to the license. This includes other CC-licensed -material, or material used under an exception or limitation to -copyright. More considerations for licensors : -wiki.creativecommons.org/Considerations_for_licensors - -Considerations for the public: By using one of our public licenses, a -licensor grants the public permission to use the licensed material under -specified terms and conditions. If the licensor's permission is not -necessary for any reason - for example, because of any applicable exception -or limitation to copyright - then that use is not regulated by the -license. Our licenses grant only permissions under copyright and certain -other rights that a licensor has authority to grant. Use of the licensed -material may still be restricted for other reasons, including because -others have copyright or other rights in the material. A licensor may make -special requests, such as asking that all changes be marked or described. - -Although not required by our licenses, you are encouraged to respect those -requests where reasonable. More considerations for the public : -wiki.creativecommons.org/Considerations_for_licensees - -Creative Commons Attribution-ShareAlike 4.0 International Public License - -By exercising the Licensed Rights (defined below), You accept and agree to -be bound by the terms and conditions of this Creative Commons -Attribution-ShareAlike 4.0 International Public License ("Public -License"). To the extent this Public License may be interpreted as a -contract, You are granted the Licensed Rights in consideration of Your -acceptance of these terms and conditions, and the Licensor grants You such -rights in consideration of benefits the Licensor receives from making the -Licensed Material available under these terms and conditions. - -Section 1 - Definitions. - - a. Adapted Material means material subject to Copyright and Similar - Rights that is derived from or based upon the Licensed Material and - in which the Licensed Material is translated, altered, arranged, - transformed, or otherwise modified in a manner requiring permission - under the Copyright and Similar Rights held by the Licensor. For - purposes of this Public License, where the Licensed Material is a - musical work, performance, or sound recording, Adapted Material is - always produced where the Licensed Material is synched in timed - relation with a moving image. - - b. Adapter's License means the license You apply to Your Copyright and - Similar Rights in Your contributions to Adapted Material in - accordance with the terms and conditions of this Public License. - - c. BY-SA Compatible License means a license listed at - creativecommons.org/compatiblelicenses, approved by Creative Commons - as essentially the equivalent of this Public License. - - d. Copyright and Similar Rights means copyright and/or similar rights - closely related to copyright including, without limitation, - performance, broadcast, sound recording, and Sui Generis Database - Rights, without regard to how the rights are labeled or - categorized. For purposes of this Public License, the rights - specified in Section 2(b)(1)-(2) are not Copyright and Similar - Rights. - - e. Effective Technological Measures means those measures that, in the - absence of proper authority, may not be circumvented under laws - fulfilling obligations under Article 11 of the WIPO Copyright Treaty - adopted on December 20, 1996, and/or similar international - agreements. - - f. Exceptions and Limitations means fair use, fair dealing, and/or any - other exception or limitation to Copyright and Similar Rights that - applies to Your use of the Licensed Material. - - g. License Elements means the license attributes listed in the name of - a Creative Commons Public License. The License Elements of this - Public License are Attribution and ShareAlike. - - h. Licensed Material means the artistic or literary work, database, or - other material to which the Licensor applied this Public License. - - i. Licensed Rights means the rights granted to You subject to the terms - and conditions of this Public License, which are limited to all - Copyright and Similar Rights that apply to Your use of the Licensed - Material and that the Licensor has authority to license. - - j. Licensor means the individual(s) or entity(ies) granting rights - under this Public License. - - k. Share means to provide material to the public by any means or - process that requires permission under the Licensed Rights, such as - reproduction, public display, public performance, distribution, - dissemination, communication, or importation, and to make material - available to the public including in ways that members of the public - may access the material from a place and at a time individually - chosen by them. - - l. Sui Generis Database Rights means rights other than copyright - resulting from Directive 96/9/EC of the European Parliament and of - the Council of 11 March 1996 on the legal protection of databases, - as amended and/or succeeded, as well as other essentially equivalent - rights anywhere in the world. m. You means the individual or entity - exercising the Licensed Rights under this Public License. Your has a - corresponding meaning. - -Section 2 - Scope. - - a. License grant. - - 1. Subject to the terms and conditions of this Public License, the - Licensor hereby grants You a worldwide, royalty-free, - non-sublicensable, non-exclusive, irrevocable license to - exercise the Licensed Rights in the Licensed Material to: - - A. reproduce and Share the Licensed Material, in whole or in part; and - - B. produce, reproduce, and Share Adapted Material. - - 2. Exceptions and Limitations. For the avoidance of doubt, where - Exceptions and Limitations apply to Your use, this Public - License does not apply, and You do not need to comply with its - terms and conditions. - - 3. Term. The term of this Public License is specified in Section 6(a). - - 4. Media and formats; technical modifications allowed. The Licensor - authorizes You to exercise the Licensed Rights in all media and - formats whether now known or hereafter created, and to make - technical modifications necessary to do so. The Licensor waives - and/or agrees not to assert any right or authority to forbid You - from making technical modifications necessary to exercise the - Licensed Rights, including technical modifications necessary to - circumvent Effective Technological Measures. For purposes of - this Public License, simply making modifications authorized by - this Section 2(a)(4) never produces Adapted Material. - - 5. Downstream recipients. - - A. Offer from the Licensor - Licensed Material. Every recipient - of the Licensed Material automatically receives an offer - from the Licensor to exercise the Licensed Rights under the - terms and conditions of this Public License. - - B. Additional offer from the Licensor - Adapted Material. Every - recipient of Adapted Material from You automatically - receives an offer from the Licensor to exercise the Licensed - Rights in the Adapted Material under the conditions of the - Adapter's License You apply. - - C. No downstream restrictions. You may not offer or impose any - additional or different terms or conditions on, or apply any - Effective Technological Measures to, the Licensed Material - if doing so restricts exercise of the Licensed Rights by any - recipient of the Licensed Material. - - 6. No endorsement. Nothing in this Public License constitutes or - may be construed as permission to assert or imply that You are, - or that Your use of the Licensed Material is, connected with, or - sponsored, endorsed, or granted official status by, the Licensor - or others designated to receive attribution as provided in - Section 3(a)(1)(A)(i). - - b. Other rights. - - 1. Moral rights, such as the right of integrity, are not licensed - under this Public License, nor are publicity, privacy, and/or - other similar personality rights; however, to the extent - possible, the Licensor waives and/or agrees not to assert any - such rights held by the Licensor to the limited extent necessary - to allow You to exercise the Licensed Rights, but not otherwise. - - 2. Patent and trademark rights are not licensed under this Public - License. - - 3. To the extent possible, the Licensor waives any right to collect - royalties from You for the exercise of the Licensed Rights, - whether directly or through a collecting society under any - voluntary or waivable statutory or compulsory licensing - scheme. In all other cases the Licensor expressly reserves any - right to collect such royalties. - -Section 3 - License Conditions. - -Your exercise of the Licensed Rights is expressly made subject to the -following conditions. - - a. Attribution. - - 1. If You Share the Licensed Material (including in modified form), - You must: - - A. retain the following if it is supplied by the Licensor with - the Licensed Material: - - i. identification of the creator(s) of the Licensed - Material and any others designated to receive - attribution, in any reasonable manner requested by the - Licensor (including by pseudonym if designated); - - ii. a copyright notice; - - iii. a notice that refers to this Public License; - - iv. a notice that refers to the disclaimer of warranties; - - v. a URI or hyperlink to the Licensed Material to the extent reasonably practicable; - - B. indicate if You modified the Licensed Material and retain an - indication of any previous modifications; and - - C. indicate the Licensed Material is licensed under this Public - License, and include the text of, or the URI or hyperlink to, - this Public License. - - 2. You may satisfy the conditions in Section 3(a)(1) in any - reasonable manner based on the medium, means, and context in - which You Share the Licensed Material. For example, it may be - reasonable to satisfy the conditions by providing a URI or - hyperlink to a resource that includes the required information. - - 3. If requested by the Licensor, You must remove any of the - information required by Section 3(a)(1)(A) to the extent - reasonably practicable. b. ShareAlike.In addition to the - conditions in Section 3(a), if You Share Adapted Material You - produce, the following conditions also apply. - - 1. The Adapter's License You apply must be a Creative Commons - license with the same License Elements, this version or - later, or a BY-SA Compatible License. - - 2. You must include the text of, or the URI or hyperlink to, the - Adapter's License You apply. You may satisfy this condition - in any reasonable manner based on the medium, means, and - context in which You Share Adapted Material. - - 3. You may not offer or impose any additional or different terms - or conditions on, or apply any Effective Technological - Measures to, Adapted Material that restrict exercise of the - rights granted under the Adapter's License You apply. - -Section 4 - Sui Generis Database Rights. - -Where the Licensed Rights include Sui Generis Database Rights that apply to -Your use of the Licensed Material: - - a. for the avoidance of doubt, Section 2(a)(1) grants You the right to - extract, reuse, reproduce, and Share all or a substantial portion of - the contents of the database; - - b. if You include all or a substantial portion of the database contents - in a database in which You have Sui Generis Database Rights, then - the database in which You have Sui Generis Database Rights (but not - its individual contents) is Adapted Material, including for purposes - of Section 3(b); and - - c. You must comply with the conditions in Section 3(a) if You Share all - or a substantial portion of the contents of the database. - - For the avoidance of doubt, this Section 4 supplements and does not - replace Your obligations under this Public License where the Licensed - Rights include other Copyright and Similar Rights. - -Section 5 - Disclaimer of Warranties and Limitation of Liability. - - a. Unless otherwise separately undertaken by the Licensor, to the - extent possible, the Licensor offers the Licensed Material as-is and - as-available, and makes no representations or warranties of any kind - concerning the Licensed Material, whether express, implied, - statutory, or other. This includes, without limitation, warranties - of title, merchantability, fitness for a particular purpose, - non-infringement, absence of latent or other defects, accuracy, or - the presence or absence of errors, whether or not known or - discoverable. Where disclaimers of warranties are not allowed in - full or in part, this disclaimer may not apply to You. - - b. To the extent possible, in no event will the Licensor be liable to - You on any legal theory (including, without limitation, negligence) - or otherwise for any direct, special, indirect, incidental, - consequential, punitive, exemplary, or other losses, costs, - expenses, or damages arising out of this Public License or use of - the Licensed Material, even if the Licensor has been advised of the - possibility of such losses, costs, expenses, or damages. Where a - limitation of liability is not allowed in full or in part, this - limitation may not apply to You. - - c. The disclaimer of warranties and limitation of liability provided - above shall be interpreted in a manner that, to the extent possible, - most closely approximates an absolute disclaimer and waiver of all - liability. - -Section 6 - Term and Termination. - - a. This Public License applies for the term of the Copyright and - Similar Rights licensed here. However, if You fail to comply with - this Public License, then Your rights under this Public License - terminate automatically. - - b. Where Your right to use the Licensed Material has terminated under - Section 6(a), it reinstates: - - 1. automatically as of the date the violation is cured, provided it - is cured within 30 days of Your discovery of the violation; or - - 2. upon express reinstatement by the Licensor. - - c. For the avoidance of doubt, this Section 6(b) does not affect any - right the Licensor may have to seek remedies for Your violations of - this Public License. - - d. For the avoidance of doubt, the Licensor may also offer the Licensed - Material under separate terms or conditions or stop distributing the - Licensed Material at any time; however, doing so will not terminate - this Public License. - - e. Sections 1, 5, 6, 7, and 8 survive termination of this Public License. - -Section 7 - Other Terms and Conditions. - - a. The Licensor shall not be bound by any additional or different terms - or conditions communicated by You unless expressly agreed. - - b. Any arrangements, understandings, or agreements regarding the - Licensed Material not stated herein are separate from and - independent of the terms and conditions of this Public License. - -Section 8 - Interpretation. - - a. For the avoidance of doubt, this Public License does not, and shall - not be interpreted to, reduce, limit, restrict, or impose conditions - on any use of the Licensed Material that could lawfully be made - without permission under this Public License. - - b. To the extent possible, if any provision of this Public License is - deemed unenforceable, it shall be automatically reformed to the - minimum extent necessary to make it enforceable. If the provision - cannot be reformed, it shall be severed from this Public License - without affecting the enforceability of the remaining terms and - conditions. - - c. No term or condition of this Public License will be waived and no - failure to comply consented to unless expressly agreed to by the - Licensor. - - d. Nothing in this Public License constitutes or may be interpreted as - a limitation upon, or waiver of, any privileges and immunities that - apply to the Licensor or You, including from the legal processes of - any jurisdiction or authority. - -Creative Commons is not a party to its public licenses. Notwithstanding, -Creative Commons may elect to apply one of its public licenses to material -it publishes and in those instances will be considered the "Licensor." The -text of the Creative Commons public licenses is dedicated to the public -domain under the CC0 Public Domain Dedication. Except for the limited -purpose of indicating that material is shared under a Creative Commons -public license or as otherwise permitted by the Creative Commons policies -published at creativecommons.org/policies, Creative Commons does not -authorize the use of the trademark "Creative Commons" or any other -trademark or logo of Creative Commons without its prior written consent -including, without limitation, in connection with any unauthorized -modifications to any of its public licenses or any other arrangements, -understandings, or agreements concerning use of licensed material. For the -avoidance of doubt, this paragraph does not form part of the public -licenses. - -Creative Commons may be contacted at creativecommons.org. diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index bae43938c8f6..9cbe8f5c9aca 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -567,9 +567,9 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data, struct drm_mode_crtc *crtc_req = data; struct drm_crtc *crtc; struct drm_plane *plane; - struct drm_connector **connector_set = NULL, *connector; - struct drm_framebuffer *fb = NULL; - struct drm_display_mode *mode = NULL; + struct drm_connector **connector_set, *connector; + struct drm_framebuffer *fb; + struct drm_display_mode *mode; struct drm_mode_set set; uint32_t __user *set_connectors_ptr; struct drm_modeset_acquire_ctx ctx; @@ -598,6 +598,10 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data, mutex_lock(&crtc->dev->mode_config.mutex); drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); retry: + connector_set = NULL; + fb = NULL; + mode = NULL; + ret = drm_modeset_lock_all_ctx(crtc->dev, &ctx); if (ret) goto out; diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 3c9fc99648b7..ff0bfc65a8c1 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -113,6 +113,9 @@ static const struct edid_quirk { /* AEO model 0 reports 8 bpc, but is a 6 bpc panel */ { "AEO", 0, EDID_QUIRK_FORCE_6BPC }, + /* BOE model on HP Pavilion 15-n233sl reports 8 bpc, but is a 6 bpc panel */ + { "BOE", 0x78b, EDID_QUIRK_FORCE_6BPC }, + /* CPT panel of Asus UX303LA reports 8 bpc, but is a 6 bpc panel */ { "CPT", 0x17df, EDID_QUIRK_FORCE_6BPC }, @@ -4279,7 +4282,7 @@ static void drm_parse_ycbcr420_deep_color_info(struct drm_connector *connector, struct drm_hdmi_info *hdmi = &connector->display_info.hdmi; dc_mask = db[7] & DRM_EDID_YCBCR420_DC_MASK; - hdmi->y420_dc_modes |= dc_mask; + hdmi->y420_dc_modes = dc_mask; } static void drm_parse_hdmi_forum_vsdb(struct drm_connector *connector, diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 515a7aec57ac..9628dd617826 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -1580,6 +1580,25 @@ unlock: } EXPORT_SYMBOL(drm_fb_helper_ioctl); +static bool drm_fb_pixel_format_equal(const struct fb_var_screeninfo *var_1, + const struct fb_var_screeninfo *var_2) +{ + return var_1->bits_per_pixel == var_2->bits_per_pixel && + var_1->grayscale == var_2->grayscale && + var_1->red.offset == var_2->red.offset && + var_1->red.length == var_2->red.length && + var_1->red.msb_right == var_2->red.msb_right && + var_1->green.offset == var_2->green.offset && + var_1->green.length == var_2->green.length && + var_1->green.msb_right == var_2->green.msb_right && + var_1->blue.offset == var_2->blue.offset && + var_1->blue.length == var_2->blue.length && + var_1->blue.msb_right == var_2->blue.msb_right && + var_1->transp.offset == var_2->transp.offset && + var_1->transp.length == var_2->transp.length && + var_1->transp.msb_right == var_2->transp.msb_right; +} + /** * drm_fb_helper_check_var - implementation for &fb_ops.fb_check_var * @var: screeninfo to check @@ -1590,7 +1609,6 @@ int drm_fb_helper_check_var(struct fb_var_screeninfo *var, { struct drm_fb_helper *fb_helper = info->par; struct drm_framebuffer *fb = fb_helper->fb; - int depth; if (var->pixclock != 0 || in_dbg_master()) return -EINVAL; @@ -1610,72 +1628,15 @@ int drm_fb_helper_check_var(struct fb_var_screeninfo *var, return -EINVAL; } - switch (var->bits_per_pixel) { - case 16: - depth = (var->green.length == 6) ? 16 : 15; - break; - case 32: - depth = (var->transp.length > 0) ? 32 : 24; - break; - default: - depth = var->bits_per_pixel; - break; - } - - switch (depth) { - case 8: - var->red.offset = 0; - var->green.offset = 0; - var->blue.offset = 0; - var->red.length = 8; - var->green.length = 8; - var->blue.length = 8; - var->transp.length = 0; - var->transp.offset = 0; - break; - case 15: - var->red.offset = 10; - var->green.offset = 5; - var->blue.offset = 0; - var->red.length = 5; - var->green.length = 5; - var->blue.length = 5; - var->transp.length = 1; - var->transp.offset = 15; - break; - case 16: - var->red.offset = 11; - var->green.offset = 5; - var->blue.offset = 0; - var->red.length = 5; - var->green.length = 6; - var->blue.length = 5; - var->transp.length = 0; - var->transp.offset = 0; - break; - case 24: - var->red.offset = 16; - var->green.offset = 8; - var->blue.offset = 0; - var->red.length = 8; - var->green.length = 8; - var->blue.length = 8; - var->transp.length = 0; - var->transp.offset = 0; - break; - case 32: - var->red.offset = 16; - var->green.offset = 8; - var->blue.offset = 0; - var->red.length = 8; - var->green.length = 8; - var->blue.length = 8; - var->transp.length = 8; - var->transp.offset = 24; - break; - default: + /* + * drm fbdev emulation doesn't support changing the pixel format at all, + * so reject all pixel format changing requests. + */ + if (!drm_fb_pixel_format_equal(var, &info->var)) { + DRM_DEBUG("fbdev emulation doesn't support changing the pixel format\n"); return -EINVAL; } + return 0; } EXPORT_SYMBOL(drm_fb_helper_check_var); diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c index faa9e6116b2f..73332b9a25b5 100644 --- a/drivers/infiniband/core/ucm.c +++ b/drivers/infiniband/core/ucm.c @@ -46,6 +46,8 @@ #include <linux/mutex.h> #include <linux/slab.h> +#include <linux/nospec.h> + #include <linux/uaccess.h> #include <rdma/ib.h> @@ -1120,6 +1122,7 @@ static ssize_t ib_ucm_write(struct file *filp, const char __user *buf, if (hdr.cmd >= ARRAY_SIZE(ucm_cmd_table)) return -EINVAL; + hdr.cmd = array_index_nospec(hdr.cmd, ARRAY_SIZE(ucm_cmd_table)); if (hdr.in + sizeof(hdr) > len) return -EINVAL; diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c index 21863ddde63e..01d68ed46c1b 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -44,6 +44,8 @@ #include <linux/module.h> #include <linux/nsproxy.h> +#include <linux/nospec.h> + #include <rdma/rdma_user_cm.h> #include <rdma/ib_marshall.h> #include <rdma/rdma_cm.h> @@ -1676,6 +1678,7 @@ static ssize_t ucma_write(struct file *filp, const char __user *buf, if (hdr.cmd >= ARRAY_SIZE(ucma_cmd_table)) return -EINVAL; + hdr.cmd = array_index_nospec(hdr.cmd, ARRAY_SIZE(ucma_cmd_table)); if (hdr.in + sizeof(hdr) > len) return -EINVAL; diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index af2b17b21b94..95983c744164 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -343,7 +343,7 @@ try_again: trap = lock_rename(cache->graveyard, dir); /* do some checks before getting the grave dentry */ - if (rep->d_parent != dir) { + if (rep->d_parent != dir || IS_DEADDIR(d_inode(rep))) { /* the entry was probably culled when we dropped the parent dir * lock */ unlock_rename(cache->graveyard, dir); diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c index 83bfe04456b6..c550512ce335 100644 --- a/fs/fscache/cookie.c +++ b/fs/fscache/cookie.c @@ -70,20 +70,7 @@ void fscache_free_cookie(struct fscache_cookie *cookie) } /* - * initialise an cookie jar slab element prior to any use - */ -void fscache_cookie_init_once(void *_cookie) -{ - struct fscache_cookie *cookie = _cookie; - - memset(cookie, 0, sizeof(*cookie)); - spin_lock_init(&cookie->lock); - spin_lock_init(&cookie->stores_lock); - INIT_HLIST_HEAD(&cookie->backing_objects); -} - -/* - * Set the index key in a cookie. The cookie struct has space for a 12-byte + * Set the index key in a cookie. The cookie struct has space for a 16-byte * key plus length and hash, but if that's not big enough, it's instead a * pointer to a buffer containing 3 bytes of hash, 1 byte of length and then * the key data. @@ -93,20 +80,18 @@ static int fscache_set_key(struct fscache_cookie *cookie, { unsigned long long h; u32 *buf; + int bufs; int i; - cookie->key_len = index_key_len; + bufs = DIV_ROUND_UP(index_key_len, sizeof(*buf)); if (index_key_len > sizeof(cookie->inline_key)) { - buf = kzalloc(index_key_len, GFP_KERNEL); + buf = kcalloc(bufs, sizeof(*buf), GFP_KERNEL); if (!buf) return -ENOMEM; cookie->key = buf; } else { buf = (u32 *)cookie->inline_key; - buf[0] = 0; - buf[1] = 0; - buf[2] = 0; } memcpy(buf, index_key, index_key_len); @@ -116,7 +101,8 @@ static int fscache_set_key(struct fscache_cookie *cookie, */ h = (unsigned long)cookie->parent; h += index_key_len + cookie->type; - for (i = 0; i < (index_key_len + sizeof(u32) - 1) / sizeof(u32); i++) + + for (i = 0; i < bufs; i++) h += buf[i]; cookie->key_hash = h ^ (h >> 32); @@ -161,7 +147,7 @@ struct fscache_cookie *fscache_alloc_cookie( struct fscache_cookie *cookie; /* allocate and initialise a cookie */ - cookie = kmem_cache_alloc(fscache_cookie_jar, GFP_KERNEL); + cookie = kmem_cache_zalloc(fscache_cookie_jar, GFP_KERNEL); if (!cookie) return NULL; @@ -192,6 +178,9 @@ struct fscache_cookie *fscache_alloc_cookie( cookie->netfs_data = netfs_data; cookie->flags = (1 << FSCACHE_COOKIE_NO_DATA_YET); cookie->type = def->type; + spin_lock_init(&cookie->lock); + spin_lock_init(&cookie->stores_lock); + INIT_HLIST_HEAD(&cookie->backing_objects); /* radix tree insertion won't use the preallocation pool unless it's * told it may not wait */ diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h index f83328a7f048..d6209022e965 100644 --- a/fs/fscache/internal.h +++ b/fs/fscache/internal.h @@ -51,7 +51,6 @@ extern struct fscache_cache *fscache_select_cache_for_object( extern struct kmem_cache *fscache_cookie_jar; extern void fscache_free_cookie(struct fscache_cookie *); -extern void fscache_cookie_init_once(void *); extern struct fscache_cookie *fscache_alloc_cookie(struct fscache_cookie *, const struct fscache_cookie_def *, const void *, size_t, diff --git a/fs/fscache/main.c b/fs/fscache/main.c index 7dce110bf17d..30ad89db1efc 100644 --- a/fs/fscache/main.c +++ b/fs/fscache/main.c @@ -143,9 +143,7 @@ static int __init fscache_init(void) fscache_cookie_jar = kmem_cache_create("fscache_cookie_jar", sizeof(struct fscache_cookie), - 0, - 0, - fscache_cookie_init_once); + 0, 0, NULL); if (!fscache_cookie_jar) { pr_notice("Failed to allocate a cookie jar\n"); ret = -ENOMEM; diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index b25d12ef120a..e3c404833115 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -214,9 +214,9 @@ struct detailed_timing { #define DRM_EDID_HDMI_DC_Y444 (1 << 3) /* YCBCR 420 deep color modes */ -#define DRM_EDID_YCBCR420_DC_48 (1 << 6) -#define DRM_EDID_YCBCR420_DC_36 (1 << 5) -#define DRM_EDID_YCBCR420_DC_30 (1 << 4) +#define DRM_EDID_YCBCR420_DC_48 (1 << 2) +#define DRM_EDID_YCBCR420_DC_36 (1 << 1) +#define DRM_EDID_YCBCR420_DC_30 (1 << 0) #define DRM_EDID_YCBCR420_DC_MASK (DRM_EDID_YCBCR420_DC_48 | \ DRM_EDID_YCBCR420_DC_36 | \ DRM_EDID_YCBCR420_DC_30) diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 99c19b06d9a4..fdcb45999b26 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -43,7 +43,7 @@ extern int mincore_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, unsigned char *vec); extern bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr, unsigned long new_addr, unsigned long old_end, - pmd_t *old_pmd, pmd_t *new_pmd, bool *need_flush); + pmd_t *old_pmd, pmd_t *new_pmd); extern int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, unsigned long addr, pgprot_t newprot, int prot_numa); diff --git a/include/linux/module.h b/include/linux/module.h index f807f15bebbe..e19ae08c7fb8 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -20,6 +20,7 @@ #include <linux/export.h> #include <linux/rbtree_latch.h> #include <linux/error-injection.h> +#include <linux/tracepoint-defs.h> #include <linux/percpu.h> #include <asm/module.h> @@ -430,7 +431,7 @@ struct module { #ifdef CONFIG_TRACEPOINTS unsigned int num_tracepoints; - struct tracepoint * const *tracepoints_ptrs; + tracepoint_ptr_t *tracepoints_ptrs; #endif #ifdef HAVE_JUMP_LABEL struct jump_entry *jump_entries; diff --git a/include/linux/tracepoint-defs.h b/include/linux/tracepoint-defs.h index 22c5a46e9693..49ba9cde7e4b 100644 --- a/include/linux/tracepoint-defs.h +++ b/include/linux/tracepoint-defs.h @@ -35,6 +35,12 @@ struct tracepoint { struct tracepoint_func __rcu *funcs; }; +#ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS +typedef const int tracepoint_ptr_t; +#else +typedef struct tracepoint * const tracepoint_ptr_t; +#endif + struct bpf_raw_event_map { struct tracepoint *tp; void *bpf_func; diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index 041f7e56a289..538ba1a58f5b 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -99,6 +99,29 @@ extern void syscall_unregfunc(void); #define TRACE_DEFINE_ENUM(x) #define TRACE_DEFINE_SIZEOF(x) +#ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS +static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p) +{ + return offset_to_ptr(p); +} + +#define __TRACEPOINT_ENTRY(name) \ + asm(" .section \"__tracepoints_ptrs\", \"a\" \n" \ + " .balign 4 \n" \ + " .long __tracepoint_" #name " - . \n" \ + " .previous \n") +#else +static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p) +{ + return *p; +} + +#define __TRACEPOINT_ENTRY(name) \ + static tracepoint_ptr_t __tracepoint_ptr_##name __used \ + __attribute__((section("__tracepoints_ptrs"))) = \ + &__tracepoint_##name +#endif + #endif /* _LINUX_TRACEPOINT_H */ /* @@ -253,19 +276,6 @@ extern void syscall_unregfunc(void); return static_key_false(&__tracepoint_##name.key); \ } -#ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS -#define __TRACEPOINT_ENTRY(name) \ - asm(" .section \"__tracepoints_ptrs\", \"a\" \n" \ - " .balign 4 \n" \ - " .long __tracepoint_" #name " - . \n" \ - " .previous \n") -#else -#define __TRACEPOINT_ENTRY(name) \ - static struct tracepoint * const __tracepoint_ptr_##name __used \ - __attribute__((section("__tracepoints_ptrs"))) = \ - &__tracepoint_##name -#endif - /* * We have no guarantee that gcc and the linker won't up-align the tracepoint * structures, so we create an array of pointers that will be used for iteration diff --git a/kernel/trace/preemptirq_delay_test.c b/kernel/trace/preemptirq_delay_test.c index f704390db9fc..d8765c952fab 100644 --- a/kernel/trace/preemptirq_delay_test.c +++ b/kernel/trace/preemptirq_delay_test.c @@ -5,12 +5,12 @@ * Copyright (C) 2018 Joel Fernandes (Google) <joel@joelfernandes.org> */ +#include <linux/trace_clock.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/kernel.h> #include <linux/kthread.h> -#include <linux/ktime.h> #include <linux/module.h> #include <linux/printk.h> #include <linux/string.h> @@ -25,13 +25,13 @@ MODULE_PARM_DESC(test_mode, "Mode of the test such as preempt or irq (default ir static void busy_wait(ulong time) { - ktime_t start, end; - start = ktime_get(); + u64 start, end; + start = trace_clock_local(); do { - end = ktime_get(); + end = trace_clock_local(); if (kthread_should_stop()) break; - } while (ktime_to_ns(ktime_sub(end, start)) < (time * 1000)); + } while ((end - start) < (time * 1000)); } static int preemptirq_delay_run(void *data) diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c index bf2c06ef9afc..a3be42304485 100644 --- a/kernel/tracepoint.c +++ b/kernel/tracepoint.c @@ -28,8 +28,8 @@ #include <linux/sched/task.h> #include <linux/static_key.h> -extern struct tracepoint * const __start___tracepoints_ptrs[]; -extern struct tracepoint * const __stop___tracepoints_ptrs[]; +extern tracepoint_ptr_t __start___tracepoints_ptrs[]; +extern tracepoint_ptr_t __stop___tracepoints_ptrs[]; DEFINE_SRCU(tracepoint_srcu); EXPORT_SYMBOL_GPL(tracepoint_srcu); @@ -371,25 +371,17 @@ int tracepoint_probe_unregister(struct tracepoint *tp, void *probe, void *data) } EXPORT_SYMBOL_GPL(tracepoint_probe_unregister); -static void for_each_tracepoint_range(struct tracepoint * const *begin, - struct tracepoint * const *end, +static void for_each_tracepoint_range( + tracepoint_ptr_t *begin, tracepoint_ptr_t *end, void (*fct)(struct tracepoint *tp, void *priv), void *priv) { + tracepoint_ptr_t *iter; + if (!begin) return; - - if (IS_ENABLED(CONFIG_HAVE_ARCH_PREL32_RELOCATIONS)) { - const int *iter; - - for (iter = (const int *)begin; iter < (const int *)end; iter++) - fct(offset_to_ptr(iter), priv); - } else { - struct tracepoint * const *iter; - - for (iter = begin; iter < end; iter++) - fct(*iter, priv); - } + for (iter = begin; iter < end; iter++) + fct(tracepoint_ptr_deref(iter), priv); } #ifdef CONFIG_MODULES diff --git a/lib/test_ida.c b/lib/test_ida.c index 2d1637d8136b..b06880625961 100644 --- a/lib/test_ida.c +++ b/lib/test_ida.c @@ -150,10 +150,10 @@ static void ida_check_conv(struct ida *ida) IDA_BUG_ON(ida, !ida_is_empty(ida)); } +static DEFINE_IDA(ida); + static int ida_checks(void) { - DEFINE_IDA(ida); - IDA_BUG_ON(&ida, !ida_is_empty(&ida)); ida_check_alloc(&ida); ida_check_destroy(&ida); diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 58269f8ba7c4..deed97fba979 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1780,7 +1780,7 @@ static pmd_t move_soft_dirty_pmd(pmd_t pmd) bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr, unsigned long new_addr, unsigned long old_end, - pmd_t *old_pmd, pmd_t *new_pmd, bool *need_flush) + pmd_t *old_pmd, pmd_t *new_pmd) { spinlock_t *old_ptl, *new_ptl; pmd_t pmd; @@ -1811,7 +1811,7 @@ bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr, if (new_ptl != old_ptl) spin_lock_nested(new_ptl, SINGLE_DEPTH_NESTING); pmd = pmdp_huge_get_and_clear(mm, old_addr, old_pmd); - if (pmd_present(pmd) && pmd_dirty(pmd)) + if (pmd_present(pmd)) force_flush = true; VM_BUG_ON(!pmd_none(*new_pmd)); @@ -1822,12 +1822,10 @@ bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr, } pmd = move_soft_dirty_pmd(pmd); set_pmd_at(mm, new_addr, new_pmd, pmd); - if (new_ptl != old_ptl) - spin_unlock(new_ptl); if (force_flush) flush_tlb_range(vma, old_addr, old_addr + PMD_SIZE); - else - *need_flush = true; + if (new_ptl != old_ptl) + spin_unlock(new_ptl); spin_unlock(old_ptl); return true; } diff --git a/mm/mremap.c b/mm/mremap.c index 5c2e18505f75..a9617e72e6b7 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -115,7 +115,7 @@ static pte_t move_soft_dirty_pte(pte_t pte) static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd, unsigned long old_addr, unsigned long old_end, struct vm_area_struct *new_vma, pmd_t *new_pmd, - unsigned long new_addr, bool need_rmap_locks, bool *need_flush) + unsigned long new_addr, bool need_rmap_locks) { struct mm_struct *mm = vma->vm_mm; pte_t *old_pte, *new_pte, pte; @@ -163,15 +163,17 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd, pte = ptep_get_and_clear(mm, old_addr, old_pte); /* - * If we are remapping a dirty PTE, make sure + * If we are remapping a valid PTE, make sure * to flush TLB before we drop the PTL for the - * old PTE or we may race with page_mkclean(). + * PTE. * - * This check has to be done after we removed the - * old PTE from page tables or another thread may - * dirty it after the check and before the removal. + * NOTE! Both old and new PTL matter: the old one + * for racing with page_mkclean(), the new one to + * make sure the physical page stays valid until + * the TLB entry for the old mapping has been + * flushed. */ - if (pte_present(pte) && pte_dirty(pte)) + if (pte_present(pte)) force_flush = true; pte = move_pte(pte, new_vma->vm_page_prot, old_addr, new_addr); pte = move_soft_dirty_pte(pte); @@ -179,13 +181,11 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd, } arch_leave_lazy_mmu_mode(); + if (force_flush) + flush_tlb_range(vma, old_end - len, old_end); if (new_ptl != old_ptl) spin_unlock(new_ptl); pte_unmap(new_pte - 1); - if (force_flush) - flush_tlb_range(vma, old_end - len, old_end); - else - *need_flush = true; pte_unmap_unlock(old_pte - 1, old_ptl); if (need_rmap_locks) drop_rmap_locks(vma); @@ -198,7 +198,6 @@ unsigned long move_page_tables(struct vm_area_struct *vma, { unsigned long extent, next, old_end; pmd_t *old_pmd, *new_pmd; - bool need_flush = false; unsigned long mmun_start; /* For mmu_notifiers */ unsigned long mmun_end; /* For mmu_notifiers */ @@ -229,8 +228,7 @@ unsigned long move_page_tables(struct vm_area_struct *vma, if (need_rmap_locks) take_rmap_locks(vma); moved = move_huge_pmd(vma, old_addr, new_addr, - old_end, old_pmd, new_pmd, - &need_flush); + old_end, old_pmd, new_pmd); if (need_rmap_locks) drop_rmap_locks(vma); if (moved) @@ -246,10 +244,8 @@ unsigned long move_page_tables(struct vm_area_struct *vma, if (extent > next - new_addr) extent = next - new_addr; move_ptes(vma, old_pmd, old_addr, old_addr + extent, new_vma, - new_pmd, new_addr, need_rmap_locks, &need_flush); + new_pmd, new_addr, need_rmap_locks); } - if (need_flush) - flush_tlb_range(vma, old_end-len, old_addr); mmu_notifier_invalidate_range_end(vma->vm_mm, mmun_start, mmun_end); |