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Re: 我是普华操作系统的杨嫣，想加入openEuler的kernel sig组
by Xie XiuQi 24 Nov '21

24 Nov '21

你好，欢迎参与 openEuler kernel。 kernel sig 例会是隔周的周五下午。下次会议时间是 12月3号（下周五）下午2:10~4:00. 你可以订阅一下 kernel(a)openeuler.org 和 kernel-discuss(a)openeuer.org. 可以直接发邮件报议题。 On 2021/11/24 13:11, yan.yang(a)i-soft.com.cn wrote: > 您好， > > 我是普华基础软件的杨嫣，负责跟踪OpenEuler的内核新动向，想参加贵司的kernel sig组的会议，但是看网页上没有写具体会议时间，及参会方式，麻烦您告知一下，我要怎么参与到SIG组的会议中，感谢！ > > ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ > > */Best Regards/* > > 杨嫣* * > > > > 地址：北京市朝阳区容达路7号院（太极信息产业园）E座3层 > > 邮编：100102 > > 电话（Tel）: +86 10 8406 5566-8102 > > 传真（Fax）：+86 10 8496 6005 > > 手机（Mobile）: +86 158 1062 8953 > > 网站（Web）: www.i-soft.com.cn <http://www.i-soft.com.cn/> >

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[PATCH openEuler-1.0-LTS] lib/clear_user: ensure loop in __arch_clear_user cache-aligned v2
by Yang Yingliang 24 Nov '21

24 Nov '21

From: Cheng Jian <cj.chengjian(a)huawei.com> hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I3OX0C CVE: NA -------------------------------- We must ensure that the following four instructions are cache-aligned. Otherwise, it will cause problems with the performance of libMicro pread. 1: # uao_user_alternative 9f, str, sttr, xzr, x0, 8 str xzr, [x0], #8 nop subs x1, x1, #8 b.pl 1b with this patch: prc thr usecs/call samples errors cnt/samp size pread_z100 1 1 5.88400 807 0 1 102400 The result of pread can range from 5 to 9 depending on the alignment performance of this function. Signed-off-by: Cheng Jian <cj.chengjian(a)huawei.com> Reviewed-by: Xie XiuQi <xiexiuqi(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- arch/arm64/lib/clear_user.S | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm64/lib/clear_user.S b/arch/arm64/lib/clear_user.S index 9ebc5d84e6154..410768a8d4166 100644 --- a/arch/arm64/lib/clear_user.S +++ b/arch/arm64/lib/clear_user.S @@ -20,7 +20,7 @@ #include <asm/asm-uaccess.h> .text - .align 6 + /* Prototype: int __arch_clear_user(void *addr, size_t sz) * Purpose : clear some user memory * Params : addr - user memory address to clear @@ -34,6 +34,9 @@ ENTRY(__arch_clear_user) mov x2, x1 // save the size for fixup return subs x1, x1, #8 b.mi 2f +#ifdef CONFIG_ARCH_HISI + .align 5 +#endif 1: uao_user_alternative 9f, str, sttr, xzr, x0, 8 subs x1, x1, #8 -- 2.25.1

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[PATCH OLK-5.10] atlantic: Fix OOB read and write in hw_atl_utils_fw_rpc_wait
by Zheng Zengkai 23 Nov '21

23 Nov '21

From: Zekun Shen <bruceshenzk(a)gmail.com> mainline inclusion from mainline commit b922f622592af76b57cbc566eaeccda0b31a3496 bugzilla: 185788 https://e.gitee.com/open_euler/dashboard?issue=I4IYTG CVE: CVE-2021-43975 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- This bug report shows up when running our research tools. The reports is SOOB read, but it seems SOOB write is also possible a few lines below. In details, fw.len and sw.len are inputs coming from io. A len over the size of self->rpc triggers SOOB. The patch fixes the bugs by adding sanity checks. The bugs are triggerable with compromised/malfunctioning devices. They are potentially exploitable given they first leak up to 0xffff bytes and able to overwrite the region later. The patch is tested with QEMU emulater. This is NOT tested with a real device. Attached is the log we found by fuzzing. BUG: KASAN: slab-out-of-bounds in hw_atl_utils_fw_upload_dwords+0x393/0x3c0 [atlantic] Read of size 4 at addr ffff888016260b08 by task modprobe/213 CPU: 0 PID: 213 Comm: modprobe Not tainted 5.6.0 #1 Call Trace: dump_stack+0x76/0xa0 print_address_description.constprop.0+0x16/0x200 ? hw_atl_utils_fw_upload_dwords+0x393/0x3c0 [atlantic] ? hw_atl_utils_fw_upload_dwords+0x393/0x3c0 [atlantic] __kasan_report.cold+0x37/0x7c ? aq_hw_read_reg_bit+0x60/0x70 [atlantic] ? hw_atl_utils_fw_upload_dwords+0x393/0x3c0 [atlantic] kasan_report+0xe/0x20 hw_atl_utils_fw_upload_dwords+0x393/0x3c0 [atlantic] hw_atl_utils_fw_rpc_call+0x95/0x130 [atlantic] hw_atl_utils_fw_rpc_wait+0x176/0x210 [atlantic] hw_atl_utils_mpi_create+0x229/0x2e0 [atlantic] ? hw_atl_utils_fw_rpc_wait+0x210/0x210 [atlantic] ? hw_atl_utils_initfw+0x9f/0x1c8 [atlantic] hw_atl_utils_initfw+0x12a/0x1c8 [atlantic] aq_nic_ndev_register+0x88/0x650 [atlantic] ? aq_nic_ndev_init+0x235/0x3c0 [atlantic] aq_pci_probe+0x731/0x9b0 [atlantic] ? aq_pci_func_init+0xc0/0xc0 [atlantic] local_pci_probe+0xd3/0x160 pci_device_probe+0x23f/0x3e0 Reported-by: Brendan Dolan-Gavitt <brendandg(a)nyu.edu> Signed-off-by: Zekun Shen <bruceshenzk(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Chen Jun <chenjun102(a)huawei.com> Reviewed-by: Xiu Jianfeng <xiujianfeng(a)huawei.com> Reviewed-by: Wei Yongjun <weiyongjun1(a)huawei.com> Signed-off-by: Chen Jun <chenjun102(a)huawei.com> --- .../ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c index 404cbf60d3f2..da1d185f6d22 100644 --- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c +++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c @@ -559,6 +559,11 @@ int hw_atl_utils_fw_rpc_wait(struct aq_hw_s *self, goto err_exit; if (fw.len == 0xFFFFU) { + if (sw.len > sizeof(self->rpc)) { + printk(KERN_INFO "Invalid sw len: %x\n", sw.len); + err = -EINVAL; + goto err_exit; + } err = hw_atl_utils_fw_rpc_call(self, sw.len); if (err < 0) goto err_exit; @@ -567,6 +572,11 @@ int hw_atl_utils_fw_rpc_wait(struct aq_hw_s *self, if (rpc) { if (fw.len) { + if (fw.len > sizeof(self->rpc)) { + printk(KERN_INFO "Invalid fw len: %x\n", fw.len); + err = -EINVAL; + goto err_exit; + } err = hw_atl_utils_fw_downld_dwords(self, self->rpc_addr, -- 2.20.1

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[PATCH openEuler-1.0-LTS] drm/ioctl: Ditch DRM_UNLOCKED except for the legacy vblank ioctl
by Yang Yingliang 23 Nov '21

23 Nov '21

From: Daniel Vetter <daniel.vetter(a)ffwll.ch> mainline inclusion from mainline-v5.4-rc1 commit 75426367cd377120a256cad0b35b02eec4b83591 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I4JI7R CVE: NA -------------------------------- This completes Emil's series of removing DRM_UNLOCKED from modern drivers. It's entirely cargo-culted since we ignore it on non-DRIVER_LEGACY drivers since: commit ea487835e8876abf7ad909636e308c801a2bcda6 Author: Daniel Vetter <daniel.vetter(a)ffwll.ch> Date: Mon Sep 28 21:42:40 2015 +0200 drm: Enforce unlocked ioctl operation for kms driver ioctls Now justifying why we can do this for legacy drives too (and hence close the source of all the bogus copypasting) is a bit more involved. DRM_UNLOCKED was introduced in: commit ed8b67040965e4fe695db333d5914e18ea5f146f Author: Arnd Bergmann <arnd(a)arndb.de> Date: Wed Dec 16 22:17:09 2009 +0000 drm: convert drm_ioctl to unlocked_ioctl As a immediate hack to keep i810 happy, which would have deadlocked without this trickery. The old BKL is automatically dropped in schedule(), and hence the i810 vs. mmap_sem deadlock didn't actually cause a real deadlock. But with a mutex it would. The solution was to annotate these as DRM_UNLOCKED and mark i810 unsafe on SMP machines. This conversion caused a regression, because unlike the BKL a mutex isn't dropped over schedule (that thing again), which caused a vblank wait in one thread to block the entire desktop and all its apps. Back then we did vblank scheduling by blocking in the client, awesome isn't it. This was fixed quickly in (ok not so quickly, took 2 years): commit 8f4ff2b06afcd6f151868474a432c603057eaf56 Author: Ilija Hadzic <ihadzic(a)research.bell-labs.com> Date: Mon Oct 31 17:46:18 2011 -0400 drm: do not sleep on vblank while holding a mutex All the other DRM_UNLOCKED annotations for all the core ioctls was work to reach finer-grained locking for modern drivers. This took years, and culminated in: commit fdd5b877e9ebc2029e1373b4a3cd057329a9ab7a Author: Daniel Vetter <daniel.vetter(a)ffwll.ch> Date: Sat Dec 10 22:52:54 2016 +0100 drm: Enforce BKL-less ioctls for modern drivers DRM_UNLOCKED was never required by any legacy drivers, except for the vblank_wait IOCTL. Therefore we will not regress these old drivers by going back to where we've been in 2011. For all modern drivers nothing will change. To make this perfectly clear, also add a comment to DRM_UNLOCKED. v2: Don't forget about drm_ioc32.c (Michel). Cc: Michel Dänzer <michel(a)daenzer.net> Cc: Emil Velikov <emil.l.velikov(a)gmail.com> Acked-by: Emil Velikov <emil.velikov(a)collabora.com> Acked-by: Michel Dänzer <michel(a)daenzer.net> Signed-off-by: Daniel Vetter <daniel.vetter(a)intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190605120835.2798-1-daniel.… Signed-off-by: Liu ZiXian <liuzixian4(a)huawei.com> Signed-off-by: Cheng Jian <cj.chengjian(a)huawei.com> Reviewed-by: wangxiongfeng 00379786 <wangxiongfeng2(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/gpu/drm/drm_ioc32.c | 13 ++-- drivers/gpu/drm/drm_ioctl.c | 131 ++++++++++++++++++------------------ include/drm/drm_ioctl.h | 3 + 3 files changed, 74 insertions(+), 73 deletions(-) diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c index f8672238d444b..ed20dbae66070 100644 --- a/drivers/gpu/drm/drm_ioc32.c +++ b/drivers/gpu/drm/drm_ioc32.c @@ -105,7 +105,7 @@ static int compat_drm_version(struct file *file, unsigned int cmd, .desc = compat_ptr(v32.desc), }; err = drm_ioctl_kernel(file, drm_version, &v, - DRM_UNLOCKED|DRM_RENDER_ALLOW); + DRM_RENDER_ALLOW); if (err) return err; @@ -139,7 +139,7 @@ static int compat_drm_getunique(struct file *file, unsigned int cmd, .unique = compat_ptr(uq32.unique), }; - err = drm_ioctl_kernel(file, drm_getunique, &uq, DRM_UNLOCKED); + err = drm_ioctl_kernel(file, drm_getunique, &uq, 0); if (err) return err; @@ -177,7 +177,7 @@ static int compat_drm_getmap(struct file *file, unsigned int cmd, return -EFAULT; map.offset = m32.offset; - err = drm_ioctl_kernel(file, drm_legacy_getmap_ioctl, &map, DRM_UNLOCKED); + err = drm_ioctl_kernel(file, drm_legacy_getmap_ioctl, &map, 0); if (err) return err; @@ -262,7 +262,7 @@ static int compat_drm_getclient(struct file *file, unsigned int cmd, client.idx = c32.idx; - err = drm_ioctl_kernel(file, drm_getclient, &client, DRM_UNLOCKED); + err = drm_ioctl_kernel(file, drm_getclient, &client, 0); if (err) return err; @@ -292,7 +292,7 @@ static int compat_drm_getstats(struct file *file, unsigned int cmd, drm_stats32_t __user *argp = (void __user *)arg; int err; - err = drm_ioctl_kernel(file, drm_noop, NULL, DRM_UNLOCKED); + err = drm_ioctl_kernel(file, drm_noop, NULL, 0); if (err) return err; @@ -887,8 +887,7 @@ static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd, sizeof(req64.modifier))) return -EFAULT; - err = drm_ioctl_kernel(file, drm_mode_addfb2, &req64, - DRM_UNLOCKED); + err = drm_ioctl_kernel(file, drm_mode_addfb2, &req64, 0); if (err) return err; diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index ba129b64b61fc..3fe512b8a488b 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -549,22 +549,21 @@ EXPORT_SYMBOL(drm_ioctl_permit); /* Ioctl table */ static const struct drm_ioctl_desc drm_ioctls[] = { - DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, - DRM_UNLOCKED|DRM_RENDER_ALLOW), - DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, DRM_UNLOCKED), + DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), + DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_legacy_getmap_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED|DRM_RENDER_ALLOW), - DRM_IOCTL_DEF(DRM_IOCTL_SET_CLIENT_CAP, drm_setclientcap, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_UNLOCKED | DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_legacy_getmap_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), + DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), + DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF(DRM_IOCTL_SET_CLIENT_CAP, drm_setclientcap, 0), + DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER), DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_UNLOCKED|DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER), DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_legacy_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_legacy_rmmap_ioctl, DRM_AUTH), @@ -572,8 +571,8 @@ static const struct drm_ioctl_desc drm_ioctls[] = { DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_legacy_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_legacy_getsareactx, DRM_AUTH), - DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_UNLOCKED|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_UNLOCKED|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_legacy_addctx, DRM_AUTH|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_legacy_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), @@ -620,66 +619,66 @@ static const struct drm_ioctl_desc drm_ioctls[] = { DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), - DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED), - - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_UNLOCKED), - - DRM_IOCTL_DEF(DRM_IOCTL_PRIME_HANDLE_TO_FD, drm_prime_handle_to_fd_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW), - DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW), - - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_noop, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_noop, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_connector_property_set_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR2, drm_mode_cursor2_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATOMIC, drm_mode_atomic_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATEPROPBLOB, drm_mode_createblob_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROYPROPBLOB, drm_mode_destroyblob_ioctl, DRM_UNLOCKED), + DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH), + DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH), + + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, 0), + + DRM_IOCTL_DEF(DRM_IOCTL_PRIME_HANDLE_TO_FD, drm_prime_handle_to_fd_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), + DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), + + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_noop, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_noop, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_connector_property_set_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR2, drm_mode_cursor2_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATOMIC, drm_mode_atomic_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATEPROPBLOB, drm_mode_createblob_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROYPROPBLOB, drm_mode_destroyblob_ioctl, 0), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_CREATE, drm_syncobj_create_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_DESTROY, drm_syncobj_destroy_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD, drm_syncobj_handle_to_fd_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE, drm_syncobj_fd_to_handle_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_WAIT, drm_syncobj_wait_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_RESET, drm_syncobj_reset_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_SIGNAL, drm_syncobj_signal_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), - DRM_IOCTL_DEF(DRM_IOCTL_CRTC_GET_SEQUENCE, drm_crtc_get_sequence_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_CRTC_QUEUE_SEQUENCE, drm_crtc_queue_sequence_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_LEASE, drm_mode_create_lease_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_LIST_LESSEES, drm_mode_list_lessees_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GET_LEASE, drm_mode_get_lease_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_REVOKE_LEASE, drm_mode_revoke_lease_ioctl, DRM_MASTER|DRM_UNLOCKED), + DRM_RENDER_ALLOW), + DRM_IOCTL_DEF(DRM_IOCTL_CRTC_GET_SEQUENCE, drm_crtc_get_sequence_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_CRTC_QUEUE_SEQUENCE, drm_crtc_queue_sequence_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_LEASE, drm_mode_create_lease_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_LIST_LESSEES, drm_mode_list_lessees_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GET_LEASE, drm_mode_get_lease_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_REVOKE_LEASE, drm_mode_revoke_lease_ioctl, DRM_MASTER), }; #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) @@ -747,7 +746,7 @@ long drm_ioctl_kernel(struct file *file, drm_ioctl_t *func, void *kdata, return retcode; /* Enforce sane locking for modern driver ioctls. */ - if (!drm_core_check_feature(dev, DRIVER_LEGACY) || + if (likely(!drm_core_check_feature(dev, DRIVER_LEGACY)) || (flags & DRM_UNLOCKED)) retcode = func(dev, kdata, file_priv); else { diff --git a/include/drm/drm_ioctl.h b/include/drm/drm_ioctl.h index fafb6f592c4b9..10100a4bbe2ad 100644 --- a/include/drm/drm_ioctl.h +++ b/include/drm/drm_ioctl.h @@ -114,6 +114,9 @@ enum drm_ioctl_flags { * Whether &drm_ioctl_desc.func should be called with the DRM BKL held * or not. Enforced as the default for all modern drivers, hence there * should never be a need to set this flag. + * + * Do not use anywhere else than for the VBLANK_WAIT IOCTL, which is the + * only legacy IOCTL which needs this. */ DRM_UNLOCKED = BIT(4), /** -- 2.25.1

1 0

[PATCH openEuler-1.0-LTS 1/2] share_pool: add mm address check when access the process's sp_group file
by Yang Yingliang 23 Nov '21

23 Nov '21

From: Zhang Jian <zhangjian210(a)huawei.com> ascend inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I4JICC CVE: NA ------------------------------------------------- When we access the process's sp_group file and the precess is a kernel process, it's task_struct->mm value will be 0, so we must check it, and make sure the process is not a kernel process. v1->v2: The path of a process as a kernel process is not often triggered, so add a unlikely function to accelerate execytion. Signed-off-by: Zhang Jian <zhangjian210(a)huawei.com> Reviewed-by: Ding Tianhong <dingtianhong(a)huawei.com> Reviewed-by: Weilong Chen <chenweilong(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- mm/share_pool.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/mm/share_pool.c b/mm/share_pool.c index c6dcae92f67b5..2cc15f894cf84 100644 --- a/mm/share_pool.c +++ b/mm/share_pool.c @@ -3851,13 +3851,17 @@ int proc_sp_group_state(struct seq_file *m, struct pid_namespace *ns, struct pid *pid, struct task_struct *task) { struct mm_struct *mm = task->mm; - struct sp_group_master *master = mm->sp_group_master; + struct sp_group_master *master; struct sp_proc_stat *proc_stat; struct spg_proc_stat *spg_proc_stat; int i; unsigned long anon, file, shmem, total_rss, prot; long sp_res, sp_res_nsize, non_sp_res, non_sp_shm; + if (unlikely(!mm)) + return 0; + + master = mm->sp_group_master; if (!master) return 0; -- 2.25.1

1 1

[PATCH openEuler-1.0-LTS v2] config: Enable some configs for test
by Yang Yingliang 23 Nov '21

23 Nov '21

hulk inclusion category: bugfix bugzilla: NA CVE: NA -------------------------------- Enable some configs for test. Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- arch/arm64/configs/hulk_defconfig | 66 +++++++++++++++++++++++++------ 1 file changed, 55 insertions(+), 11 deletions(-) diff --git a/arch/arm64/configs/hulk_defconfig b/arch/arm64/configs/hulk_defconfig index 413667c434ee6..fdf628f1fa028 100644 --- a/arch/arm64/configs/hulk_defconfig +++ b/arch/arm64/configs/hulk_defconfig @@ -566,7 +566,7 @@ CONFIG_CPU_FREQ_GOV_POWERSAVE=y CONFIG_CPU_FREQ_GOV_USERSPACE=y CONFIG_CPU_FREQ_GOV_ONDEMAND=y CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y -# CONFIG_CPU_FREQ_GOV_SCHEDUTIL is not set +CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y # # CPU frequency scaling drivers @@ -1889,7 +1889,22 @@ CONFIG_MTD_PHYSMAP_OF=m # # CONFIG_MTD_DOCG3 is not set # CONFIG_MTD_ONENAND is not set -# CONFIG_MTD_NAND is not set +CONFIG_MTD_NAND_ECC=m +# CONFIG_MTD_NAND_ECC_SMC is not set +CONFIG_MTD_NAND=m +# CONFIG_MTD_NAND_ECC_BCH is not set +# CONFIG_MTD_NAND_DENALI_PCI is not set +# CONFIG_MTD_NAND_DENALI_DT is not set +# CONFIG_MTD_NAND_GPIO is not set +# CONFIG_MTD_NAND_RICOH is not set +# CONFIG_MTD_NAND_DISKONCHIP is not set +# CONFIG_MTD_NAND_DOCG4 is not set +# CONFIG_MTD_NAND_CAFE is not set +CONFIG_MTD_NAND_NANDSIM=m +# CONFIG_MTD_NAND_BRCMNAND is not set +# CONFIG_MTD_NAND_PLATFORM is not set +# CONFIG_MTD_NAND_HISI504 is not set +# CONFIG_MTD_NAND_QCOM is not set # CONFIG_MTD_SPI_NAND is not set # @@ -4840,7 +4855,13 @@ CONFIG_XFS_POSIX_ACL=y # CONFIG_XFS_DEBUG is not set # CONFIG_GFS2_FS is not set # CONFIG_OCFS2_FS is not set -# CONFIG_BTRFS_FS is not set +CONFIG_BTRFS_FS=y +CONFIG_BTRFS_FS_POSIX_ACL=y +CONFIG_BTRFS_FS_CHECK_INTEGRITY=y +CONFIG_BTRFS_FS_RUN_SANITY_TESTS=y +CONFIG_BTRFS_DEBUG=y +CONFIG_BTRFS_ASSERT=y +CONFIG_BTRFS_FS_REF_VERIFY=y # CONFIG_NILFS2_FS is not set # CONFIG_F2FS_FS is not set CONFIG_FS_DAX=y @@ -4937,8 +4958,31 @@ CONFIG_MISC_FILESYSTEMS=y # CONFIG_BEFS_FS is not set # CONFIG_BFS_FS is not set # CONFIG_EFS_FS is not set -# CONFIG_JFFS2_FS is not set -# CONFIG_UBIFS_FS is not set +CONFIG_JFFS2_FS=m +CONFIG_JFFS2_FS_DEBUG=0 +CONFIG_JFFS2_FS_WRITEBUFFER=y +CONFIG_JFFS2_FS_WBUF_VERIFY=y +CONFIG_JFFS2_SUMMARY=y +CONFIG_JFFS2_FS_XATTR=y +CONFIG_JFFS2_FS_POSIX_ACL=y +CONFIG_JFFS2_FS_SECURITY=y +CONFIG_JFFS2_COMPRESSION_OPTIONS=y +CONFIG_JFFS2_ZLIB=y +CONFIG_JFFS2_LZO=y +CONFIG_JFFS2_RTIME=y +CONFIG_JFFS2_RUBIN=y +# CONFIG_JFFS2_CMODE_NONE is not set +CONFIG_JFFS2_CMODE_PRIORITY=y +# CONFIG_JFFS2_CMODE_SIZE is not set +# CONFIG_JFFS2_CMODE_FAVOURLZO is not set +CONFIG_UBIFS_FS=m +# CONFIG_UBIFS_FS_ADVANCED_COMPR is not set +CONFIG_UBIFS_FS_LZO=y +CONFIG_UBIFS_FS_ZLIB=y +# CONFIG_UBIFS_ATIME_SUPPORT is not set +CONFIG_UBIFS_FS_XATTR=y +# CONFIG_UBIFS_FS_ENCRYPTION is not set +CONFIG_UBIFS_FS_SECURITY=y CONFIG_CRAMFS=m CONFIG_CRAMFS_BLOCKDEV=y # CONFIG_CRAMFS_MTD is not set @@ -5503,7 +5547,7 @@ CONFIG_DEBUG_KERNEL=y # CONFIG_DEBUG_PAGEALLOC is not set # CONFIG_PAGE_POISONING is not set # CONFIG_DEBUG_PAGE_REF is not set -# CONFIG_DEBUG_RODATA_TEST is not set +CONFIG_DEBUG_RODATA_TEST=y # CONFIG_DEBUG_OBJECTS is not set # CONFIG_SLUB_DEBUG_ON is not set # CONFIG_SLUB_STATS is not set @@ -5656,8 +5700,8 @@ CONFIG_ASYNC_RAID6_TEST=m # CONFIG_TEST_HEXDUMP is not set # CONFIG_TEST_STRING_HELPERS is not set CONFIG_TEST_KSTRTOX=y -# CONFIG_TEST_PRINTF is not set -# CONFIG_TEST_BITMAP is not set +CONFIG_TEST_PRINTF=m +CONFIG_TEST_BITMAP=m # CONFIG_TEST_BITFIELD is not set # CONFIG_TEST_UUID is not set # CONFIG_TEST_OVERFLOW is not set @@ -5665,13 +5709,13 @@ CONFIG_TEST_KSTRTOX=y # CONFIG_TEST_HASH is not set # CONFIG_TEST_IDA is not set # CONFIG_TEST_LKM is not set -# CONFIG_TEST_USER_COPY is not set +CONFIG_TEST_USER_COPY=m # CONFIG_TEST_BPF is not set # CONFIG_FIND_BIT_BENCHMARK is not set # CONFIG_TEST_FIRMWARE is not set -# CONFIG_TEST_SYSCTL is not set +CONFIG_TEST_SYSCTL=y # CONFIG_TEST_UDELAY is not set -# CONFIG_TEST_STATIC_KEYS is not set +CONFIG_TEST_STATIC_KEYS=m # CONFIG_TEST_KMOD is not set # CONFIG_TEST_FREE_PAGES is not set # CONFIG_MEMTEST is not set -- 2.25.1

1 0

[PATCH openEuler-1.0-LTS] config: Enable some configs for test
by Yang Yingliang 23 Nov '21

23 Nov '21

hulk inclusion category: bugfix bugzilla: NA CVE: NA -------------------------------- Enable some configs for test. Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- arch/arm64/configs/hulk_defconfig | 60 +++++++++++++++++++++++++------ 1 file changed, 49 insertions(+), 11 deletions(-) diff --git a/arch/arm64/configs/hulk_defconfig b/arch/arm64/configs/hulk_defconfig index 413667c434ee6..e540b799f8d60 100644 --- a/arch/arm64/configs/hulk_defconfig +++ b/arch/arm64/configs/hulk_defconfig @@ -566,7 +566,7 @@ CONFIG_CPU_FREQ_GOV_POWERSAVE=y CONFIG_CPU_FREQ_GOV_USERSPACE=y CONFIG_CPU_FREQ_GOV_ONDEMAND=y CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y -# CONFIG_CPU_FREQ_GOV_SCHEDUTIL is not set +CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y # # CPU frequency scaling drivers @@ -1889,7 +1889,22 @@ CONFIG_MTD_PHYSMAP_OF=m # # CONFIG_MTD_DOCG3 is not set # CONFIG_MTD_ONENAND is not set -# CONFIG_MTD_NAND is not set +CONFIG_MTD_NAND_ECC=m +# CONFIG_MTD_NAND_ECC_SMC is not set +CONFIG_MTD_NAND=m +# CONFIG_MTD_NAND_ECC_BCH is not set +# CONFIG_MTD_NAND_DENALI_PCI is not set +# CONFIG_MTD_NAND_DENALI_DT is not set +# CONFIG_MTD_NAND_GPIO is not set +# CONFIG_MTD_NAND_RICOH is not set +# CONFIG_MTD_NAND_DISKONCHIP is not set +# CONFIG_MTD_NAND_DOCG4 is not set +# CONFIG_MTD_NAND_CAFE is not set +CONFIG_MTD_NAND_NANDSIM=m +# CONFIG_MTD_NAND_BRCMNAND is not set +# CONFIG_MTD_NAND_PLATFORM is not set +# CONFIG_MTD_NAND_HISI504 is not set +# CONFIG_MTD_NAND_QCOM is not set # CONFIG_MTD_SPI_NAND is not set # @@ -4840,7 +4855,7 @@ CONFIG_XFS_POSIX_ACL=y # CONFIG_XFS_DEBUG is not set # CONFIG_GFS2_FS is not set # CONFIG_OCFS2_FS is not set -# CONFIG_BTRFS_FS is not set +CONFIG_BTRFS_FS=y # CONFIG_NILFS2_FS is not set # CONFIG_F2FS_FS is not set CONFIG_FS_DAX=y @@ -4937,8 +4952,31 @@ CONFIG_MISC_FILESYSTEMS=y # CONFIG_BEFS_FS is not set # CONFIG_BFS_FS is not set # CONFIG_EFS_FS is not set -# CONFIG_JFFS2_FS is not set -# CONFIG_UBIFS_FS is not set +CONFIG_JFFS2_FS=m +CONFIG_JFFS2_FS_DEBUG=0 +CONFIG_JFFS2_FS_WRITEBUFFER=y +CONFIG_JFFS2_FS_WBUF_VERIFY=y +CONFIG_JFFS2_SUMMARY=y +CONFIG_JFFS2_FS_XATTR=y +CONFIG_JFFS2_FS_POSIX_ACL=y +CONFIG_JFFS2_FS_SECURITY=y +CONFIG_JFFS2_COMPRESSION_OPTIONS=y +CONFIG_JFFS2_ZLIB=y +CONFIG_JFFS2_LZO=y +CONFIG_JFFS2_RTIME=y +CONFIG_JFFS2_RUBIN=y +# CONFIG_JFFS2_CMODE_NONE is not set +CONFIG_JFFS2_CMODE_PRIORITY=y +# CONFIG_JFFS2_CMODE_SIZE is not set +# CONFIG_JFFS2_CMODE_FAVOURLZO is not set +CONFIG_UBIFS_FS=m +# CONFIG_UBIFS_FS_ADVANCED_COMPR is not set +CONFIG_UBIFS_FS_LZO=y +CONFIG_UBIFS_FS_ZLIB=y +# CONFIG_UBIFS_ATIME_SUPPORT is not set +CONFIG_UBIFS_FS_XATTR=y +# CONFIG_UBIFS_FS_ENCRYPTION is not set +CONFIG_UBIFS_FS_SECURITY=y CONFIG_CRAMFS=m CONFIG_CRAMFS_BLOCKDEV=y # CONFIG_CRAMFS_MTD is not set @@ -5503,7 +5541,7 @@ CONFIG_DEBUG_KERNEL=y # CONFIG_DEBUG_PAGEALLOC is not set # CONFIG_PAGE_POISONING is not set # CONFIG_DEBUG_PAGE_REF is not set -# CONFIG_DEBUG_RODATA_TEST is not set +CONFIG_DEBUG_RODATA_TEST=y # CONFIG_DEBUG_OBJECTS is not set # CONFIG_SLUB_DEBUG_ON is not set # CONFIG_SLUB_STATS is not set @@ -5656,8 +5694,8 @@ CONFIG_ASYNC_RAID6_TEST=m # CONFIG_TEST_HEXDUMP is not set # CONFIG_TEST_STRING_HELPERS is not set CONFIG_TEST_KSTRTOX=y -# CONFIG_TEST_PRINTF is not set -# CONFIG_TEST_BITMAP is not set +CONFIG_TEST_PRINTF=m +CONFIG_TEST_BITMAP=m # CONFIG_TEST_BITFIELD is not set # CONFIG_TEST_UUID is not set # CONFIG_TEST_OVERFLOW is not set @@ -5665,13 +5703,13 @@ CONFIG_TEST_KSTRTOX=y # CONFIG_TEST_HASH is not set # CONFIG_TEST_IDA is not set # CONFIG_TEST_LKM is not set -# CONFIG_TEST_USER_COPY is not set +CONFIG_TEST_USER_COPY=m # CONFIG_TEST_BPF is not set # CONFIG_FIND_BIT_BENCHMARK is not set # CONFIG_TEST_FIRMWARE is not set -# CONFIG_TEST_SYSCTL is not set +CONFIG_TEST_SYSCTL=y # CONFIG_TEST_UDELAY is not set -# CONFIG_TEST_STATIC_KEYS is not set +CONFIG_TEST_STATIC_KEYS=m # CONFIG_TEST_KMOD is not set # CONFIG_TEST_FREE_PAGES is not set # CONFIG_MEMTEST is not set -- 2.25.1

1 0

[PATCH] drm/ioctl: Ditch DRM_UNLOCKED except for the legacy vblank ioctl
by Liu Zixian 23 Nov '21

23 Nov '21

From: Daniel Vetter <daniel.vetter(a)ffwll.ch> This completes Emil's series of removing DRM_UNLOCKED from modern drivers. It's entirely cargo-culted since we ignore it on non-DRIVER_LEGACY drivers since: commit ea487835e8876abf7ad909636e308c801a2bcda6 Author: Daniel Vetter <daniel.vetter(a)ffwll.ch> Date: Mon Sep 28 21:42:40 2015 +0200 drm: Enforce unlocked ioctl operation for kms driver ioctls Now justifying why we can do this for legacy drives too (and hence close the source of all the bogus copypasting) is a bit more involved. DRM_UNLOCKED was introduced in: commit ed8b67040965e4fe695db333d5914e18ea5f146f Author: Arnd Bergmann <arnd(a)arndb.de> Date: Wed Dec 16 22:17:09 2009 +0000 drm: convert drm_ioctl to unlocked_ioctl As a immediate hack to keep i810 happy, which would have deadlocked without this trickery. The old BKL is automatically dropped in schedule(), and hence the i810 vs. mmap_sem deadlock didn't actually cause a real deadlock. But with a mutex it would. The solution was to annotate these as DRM_UNLOCKED and mark i810 unsafe on SMP machines. This conversion caused a regression, because unlike the BKL a mutex isn't dropped over schedule (that thing again), which caused a vblank wait in one thread to block the entire desktop and all its apps. Back then we did vblank scheduling by blocking in the client, awesome isn't it. This was fixed quickly in (ok not so quickly, took 2 years): commit 8f4ff2b06afcd6f151868474a432c603057eaf56 Author: Ilija Hadzic <ihadzic(a)research.bell-labs.com> Date: Mon Oct 31 17:46:18 2011 -0400 drm: do not sleep on vblank while holding a mutex All the other DRM_UNLOCKED annotations for all the core ioctls was work to reach finer-grained locking for modern drivers. This took years, and culminated in: commit fdd5b877e9ebc2029e1373b4a3cd057329a9ab7a Author: Daniel Vetter <daniel.vetter(a)ffwll.ch> Date: Sat Dec 10 22:52:54 2016 +0100 drm: Enforce BKL-less ioctls for modern drivers DRM_UNLOCKED was never required by any legacy drivers, except for the vblank_wait IOCTL. Therefore we will not regress these old drivers by going back to where we've been in 2011. For all modern drivers nothing will change. To make this perfectly clear, also add a comment to DRM_UNLOCKED. v2: Don't forget about drm_ioc32.c (Michel). Cc: Michel Dänzer <michel(a)daenzer.net> Cc: Emil Velikov <emil.l.velikov(a)gmail.com> Acked-by: Emil Velikov <emil.velikov(a)collabora.com> Acked-by: Michel Dänzer <michel(a)daenzer.net> Signed-off-by: Daniel Vetter <daniel.vetter(a)intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190605120835.2798-1-daniel.… --- drivers/gpu/drm/drm_ioc32.c | 13 ++-- drivers/gpu/drm/drm_ioctl.c | 131 ++++++++++++++++++------------------ include/drm/drm_ioctl.h | 3 + 3 files changed, 74 insertions(+), 73 deletions(-) diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c index f8672238d..ed20dbae6 100644 --- a/drivers/gpu/drm/drm_ioc32.c +++ b/drivers/gpu/drm/drm_ioc32.c @@ -105,7 +105,7 @@ static int compat_drm_version(struct file *file, unsigned int cmd, .desc = compat_ptr(v32.desc), }; err = drm_ioctl_kernel(file, drm_version, &v, - DRM_UNLOCKED|DRM_RENDER_ALLOW); + DRM_RENDER_ALLOW); if (err) return err; @@ -139,7 +139,7 @@ static int compat_drm_getunique(struct file *file, unsigned int cmd, .unique = compat_ptr(uq32.unique), }; - err = drm_ioctl_kernel(file, drm_getunique, &uq, DRM_UNLOCKED); + err = drm_ioctl_kernel(file, drm_getunique, &uq, 0); if (err) return err; @@ -177,7 +177,7 @@ static int compat_drm_getmap(struct file *file, unsigned int cmd, return -EFAULT; map.offset = m32.offset; - err = drm_ioctl_kernel(file, drm_legacy_getmap_ioctl, &map, DRM_UNLOCKED); + err = drm_ioctl_kernel(file, drm_legacy_getmap_ioctl, &map, 0); if (err) return err; @@ -262,7 +262,7 @@ static int compat_drm_getclient(struct file *file, unsigned int cmd, client.idx = c32.idx; - err = drm_ioctl_kernel(file, drm_getclient, &client, DRM_UNLOCKED); + err = drm_ioctl_kernel(file, drm_getclient, &client, 0); if (err) return err; @@ -292,7 +292,7 @@ static int compat_drm_getstats(struct file *file, unsigned int cmd, drm_stats32_t __user *argp = (void __user *)arg; int err; - err = drm_ioctl_kernel(file, drm_noop, NULL, DRM_UNLOCKED); + err = drm_ioctl_kernel(file, drm_noop, NULL, 0); if (err) return err; @@ -887,8 +887,7 @@ static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd, sizeof(req64.modifier))) return -EFAULT; - err = drm_ioctl_kernel(file, drm_mode_addfb2, &req64, - DRM_UNLOCKED); + err = drm_ioctl_kernel(file, drm_mode_addfb2, &req64, 0); if (err) return err; diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index ba129b64b..3fe512b8a 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -549,22 +549,21 @@ EXPORT_SYMBOL(drm_ioctl_permit); /* Ioctl table */ static const struct drm_ioctl_desc drm_ioctls[] = { - DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, - DRM_UNLOCKED|DRM_RENDER_ALLOW), - DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, DRM_UNLOCKED), + DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), + DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_legacy_getmap_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED|DRM_RENDER_ALLOW), - DRM_IOCTL_DEF(DRM_IOCTL_SET_CLIENT_CAP, drm_setclientcap, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_UNLOCKED | DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_legacy_getmap_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), + DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), + DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF(DRM_IOCTL_SET_CLIENT_CAP, drm_setclientcap, 0), + DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER), DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_UNLOCKED|DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER), DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_legacy_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_legacy_rmmap_ioctl, DRM_AUTH), @@ -572,8 +571,8 @@ static const struct drm_ioctl_desc drm_ioctls[] = { DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_legacy_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_legacy_getsareactx, DRM_AUTH), - DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_UNLOCKED|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_UNLOCKED|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_legacy_addctx, DRM_AUTH|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_legacy_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), @@ -620,66 +619,66 @@ static const struct drm_ioctl_desc drm_ioctls[] = { DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), - DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED), - - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_UNLOCKED), - - DRM_IOCTL_DEF(DRM_IOCTL_PRIME_HANDLE_TO_FD, drm_prime_handle_to_fd_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW), - DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW), - - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_noop, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_noop, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_connector_property_set_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR2, drm_mode_cursor2_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATOMIC, drm_mode_atomic_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATEPROPBLOB, drm_mode_createblob_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROYPROPBLOB, drm_mode_destroyblob_ioctl, DRM_UNLOCKED), + DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH), + DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH), + + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, 0), + + DRM_IOCTL_DEF(DRM_IOCTL_PRIME_HANDLE_TO_FD, drm_prime_handle_to_fd_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), + DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), + + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_noop, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_noop, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_connector_property_set_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR2, drm_mode_cursor2_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATOMIC, drm_mode_atomic_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATEPROPBLOB, drm_mode_createblob_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROYPROPBLOB, drm_mode_destroyblob_ioctl, 0), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_CREATE, drm_syncobj_create_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_DESTROY, drm_syncobj_destroy_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD, drm_syncobj_handle_to_fd_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE, drm_syncobj_fd_to_handle_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_WAIT, drm_syncobj_wait_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_RESET, drm_syncobj_reset_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_SIGNAL, drm_syncobj_signal_ioctl, - DRM_UNLOCKED|DRM_RENDER_ALLOW), - DRM_IOCTL_DEF(DRM_IOCTL_CRTC_GET_SEQUENCE, drm_crtc_get_sequence_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_CRTC_QUEUE_SEQUENCE, drm_crtc_queue_sequence_ioctl, DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_LEASE, drm_mode_create_lease_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_LIST_LESSEES, drm_mode_list_lessees_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_GET_LEASE, drm_mode_get_lease_ioctl, DRM_MASTER|DRM_UNLOCKED), - DRM_IOCTL_DEF(DRM_IOCTL_MODE_REVOKE_LEASE, drm_mode_revoke_lease_ioctl, DRM_MASTER|DRM_UNLOCKED), + DRM_RENDER_ALLOW), + DRM_IOCTL_DEF(DRM_IOCTL_CRTC_GET_SEQUENCE, drm_crtc_get_sequence_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_CRTC_QUEUE_SEQUENCE, drm_crtc_queue_sequence_ioctl, 0), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_LEASE, drm_mode_create_lease_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_LIST_LESSEES, drm_mode_list_lessees_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GET_LEASE, drm_mode_get_lease_ioctl, DRM_MASTER), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_REVOKE_LEASE, drm_mode_revoke_lease_ioctl, DRM_MASTER), }; #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) @@ -747,7 +746,7 @@ long drm_ioctl_kernel(struct file *file, drm_ioctl_t *func, void *kdata, return retcode; /* Enforce sane locking for modern driver ioctls. */ - if (!drm_core_check_feature(dev, DRIVER_LEGACY) || + if (likely(!drm_core_check_feature(dev, DRIVER_LEGACY)) || (flags & DRM_UNLOCKED)) retcode = func(dev, kdata, file_priv); else { diff --git a/include/drm/drm_ioctl.h b/include/drm/drm_ioctl.h index fafb6f592..10100a4bb 100644 --- a/include/drm/drm_ioctl.h +++ b/include/drm/drm_ioctl.h @@ -114,6 +114,9 @@ enum drm_ioctl_flags { * Whether &drm_ioctl_desc.func should be called with the DRM BKL held * or not. Enforced as the default for all modern drivers, hence there * should never be a need to set this flag. + * + * Do not use anywhere else than for the VBLANK_WAIT IOCTL, which is the + * only legacy IOCTL which needs this. */ DRM_UNLOCKED = BIT(4), /** -- 2.30.0

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[PATCH OLK-5.10] Adjust CONFIG_NODES_SHIFT to 6
by Wen Zhiwei 23 Nov '21

23 Nov '21

Kylin inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I4J6G3?from=project-issue CVE: NA --------------------------------------- Probability of appearance (must be present), the installation is successfully started, lscpu can see the binding of cpu and node The reason is that CONFIG_NODES_SHIFT=4,2^4=16, which cannot satisfy 32 nodes Need to be changed to CONFIG_NODES_SHIFT=6 Signed-off-by: Wen Zhiwei <wenzhiwei(a)kylinos.cn> --- arch/arm64/configs/openeuler_defconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 76d6a118330d..1a7d607137ad 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -384,7 +384,7 @@ CONFIG_NR_CPUS=1024 CONFIG_HOTPLUG_CPU=y # CONFIG_ARM64_BOOTPARAM_HOTPLUG_CPU0 is not set CONFIG_NUMA=y -CONFIG_NODES_SHIFT=4 +CONFIG_NODES_SHIFT=6 CONFIG_USE_PERCPU_NUMA_NODE_ID=y CONFIG_HAVE_SETUP_PER_CPU_AREA=y CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y -- 2.30.0

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[PATCH openEuler-1.0-LTS] rq-qos: fix missed wake-ups in rq_qos_throttle try two
by Yang Yingliang 22 Nov '21

22 Nov '21

From: Jan Kara <jack(a)suse.cz> stable inclusion from stable-5.10.51 commit 8cc58a6e2c394aa48aa05f600be7d279efbafcd7 bugzilla: 175263 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 11c7aa0ddea8611007768d3e6b58d45dc60a19e1 upstream. Commit 545fbd0775ba ("rq-qos: fix missed wake-ups in rq_qos_throttle") tried to fix a problem that a process could be sleeping in rq_qos_wait() without anyone to wake it up. However the fix is not complete and the following can still happen: CPU1 (waiter1) CPU2 (waiter2) CPU3 (waker) rq_qos_wait() rq_qos_wait() acquire_inflight_cb() -> fails acquire_inflight_cb() -> fails completes IOs, inflight decreased prepare_to_wait_exclusive() prepare_to_wait_exclusive() has_sleeper = !wq_has_single_sleeper() -> true as there are two sleepers has_sleeper = !wq_has_single_sleeper() -> true io_schedule() io_schedule() Deadlock as now there's nobody to wakeup the two waiters. The logic automatically blocking when there are already sleepers is really subtle and the only way to make it work reliably is that we check whether there are some waiters in the queue when adding ourselves there. That way, we are guaranteed that at least the first process to enter the wait queue will recheck the waiting condition before going to sleep and thus guarantee forward progress. Fixes: 545fbd0775ba ("rq-qos: fix missed wake-ups in rq_qos_throttle") CC: stable(a)vger.kernel.org Signed-off-by: Jan Kara <jack(a)suse.cz> Link: https://lore.kernel.org/r/20210607112613.25344-1-jack@suse.cz Signed-off-by: Jens Axboe <axboe(a)kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Lihong Kou <koulihong(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- block/blk-wbt.c | 4 ++-- include/linux/wait.h | 1 + kernel/sched/wait.c | 19 ++++++++++++++++--- 3 files changed, 19 insertions(+), 5 deletions(-) diff --git a/block/blk-wbt.c b/block/blk-wbt.c index ffd5c17f5a101..366d294a11ef1 100644 --- a/block/blk-wbt.c +++ b/block/blk-wbt.c @@ -549,8 +549,8 @@ static void __wbt_wait(struct rq_wb *rwb, enum wbt_flags wb_acct, if (!has_sleeper && rq_wait_inc_below(rqw, get_limit(rwb, rw))) return; - prepare_to_wait_exclusive(&rqw->wait, &data.wq, TASK_UNINTERRUPTIBLE); - has_sleeper = !wq_has_single_sleeper(&rqw->wait); + has_sleeper = !__prepare_to_wait_exclusive(&rqw->wait, &data.wq, + TASK_UNINTERRUPTIBLE); do { /* The memory barrier in set_task_state saves us here. */ if (data.got_token) diff --git a/include/linux/wait.h b/include/linux/wait.h index 29d28c2084ce8..1234e6cbacd2a 100644 --- a/include/linux/wait.h +++ b/include/linux/wait.h @@ -1121,6 +1121,7 @@ do { \ * Waitqueues which are removed from the waitqueue_head at wakeup time */ void prepare_to_wait(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry, int state); +bool __prepare_to_wait_exclusive(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry, int state); void prepare_to_wait_exclusive(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry, int state); long prepare_to_wait_event(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry, int state); void finish_wait(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry); diff --git a/kernel/sched/wait.c b/kernel/sched/wait.c index 5dd47f1103d18..c95b392735672 100644 --- a/kernel/sched/wait.c +++ b/kernel/sched/wait.c @@ -235,17 +235,30 @@ prepare_to_wait(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_ent } EXPORT_SYMBOL(prepare_to_wait); -void -prepare_to_wait_exclusive(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry, int state) +/* Returns true if we are the first waiter in the queue, false otherwise. */ +bool +__prepare_to_wait_exclusive(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry, int state) { unsigned long flags; + bool was_empty = false; wq_entry->flags |= WQ_FLAG_EXCLUSIVE; spin_lock_irqsave(&wq_head->lock, flags); - if (list_empty(&wq_entry->entry)) + if (list_empty(&wq_entry->entry)) { + was_empty = list_empty(&wq_head->head); __add_wait_queue_entry_tail(wq_head, wq_entry); + } set_current_state(state); spin_unlock_irqrestore(&wq_head->lock, flags); + return was_empty; + +} +EXPORT_SYMBOL(__prepare_to_wait_exclusive); + +void +prepare_to_wait_exclusive(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry, int state) +{ + __prepare_to_wait_exclusive(wq_head, wq_entry, state); } EXPORT_SYMBOL(prepare_to_wait_exclusive); -- 2.25.1

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