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Mon, 01 Apr 2024 08:42:14 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id w16-20020a170902e89000b001dd635551f1sm9081169plg.255.2024.04.01.08.42.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Apr 2024 08:42:13 -0700 (PDT) Sender: Guenter Roeck Date: Mon, 1 Apr 2024 08:42:11 -0700 From: Guenter Roeck To: Linus Torvalds Cc: Linux Kernel Mailing List Subject: Re: Linux 6.9-rc2 Message-ID: <036cb53d-9bb6-496c-8a5a-4cfee9e6de41@roeck-us.net> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Sun, Mar 31, 2024 at 03:05:35PM -0700, Linus Torvalds wrote: > Neither snow nor rain nor heat nor gloom of night stays kernel rc releases. > > Nor does Easter. > > So here we are. Another week has passed, and rc2 is out. Nothing here > look all that remarkable, and the fixes are fairly evenly spread out > (so mostly drivers, because that's the bulk of the code). > > Outside of the driver fixes (see shortlog below for details), we've > got some more selftest work (mostly networking and bpf but also some > random fixes), some architecture fixes (mostly x86), some filesystem > work (xfs and btrfs) and random noise in other parts (mm, core kernel, > networking, Kbuild..). > > Nothing stands out to me or looks unusual. > Build results: total: 158 pass: 157 fail: 1 Failed builds: xtensa:allmodconfig Qemu test results: total: 549 pass: 548 fail: 1 Failed tests: nios2:10m50-ghrd:10m50_defconfig:10m50_devboard.dts Unit test results: pass: 227522 fail: 236 Failed unit tests: - mean_and_variance_test_2, mean_and_variance_test_4 for all architectures/platforms - sh4: IP checksum tests On top of that, there are still some warning backtraces when booting. Details of known fixes are in the patch log below. Most but not all of the patches are in maintainer branches. For those interested, the patches are available in the 'testing' branch of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git. Guenter --- commit 797f85a623ffdb2ea8af900590d20a20ac351189 Author: Guenter Roeck AuthorDate: Mon Mar 25 15:21:21 2024 -0700 Commit: Guenter Roeck CommitDate: Mon Apr 1 07:42:40 2024 -0700 nios2: Call handle_mm_fault() with interrupts enabled The following log message is reported at each boot if CONFIG_DEBUG_ATOMIC_SLEEP is enabled. BUG: sleeping function called from invalid context at mm/rmap.c:194 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 23, name: modprobe preempt_count: 0, expected: 0 CPU: 0 PID: 23 Comm: modprobe Not tainted 6.9.0-rc1-00033-g5afc2860dc51 #1 Fix by enabling local interrupts while calling handle_mm_fault(). Note: I don't really know what I am doing here. Signed-off-by: Guenter Roeck commit 98780f117c51c8ef45315a64063485f5c7ff0199 Author: Guenter Roeck AuthorDate: Thu Mar 21 11:44:11 2024 -0700 Commit: Guenter Roeck CommitDate: Mon Apr 1 07:42:40 2024 -0700 nios2: Only use built-in devicetree blob if configured to do so Starting with commit 7b937cc243e5 ("of: Create of_root if no dtb provided by firmware"), attempts to boot nios2 images with an external devicetree blob result in a crash. Kernel panic - not syncing: early_init_dt_alloc_memory_arch: Failed to allocate 72 bytes align=0x40 For nios2, a built-in devicetree blob always overrides devicetree blobs provided by ROMMON/BIOS. This includes the new dummy devicetree blob. Result is that the dummy devicetree blob is used even if an external devicetree blob is provided. Since the dummy devicetree blob does not include any memory information, memory allocations fail, resulting in the crash. To fix the problem, only use the built-in devicetree blob if CONFIG_NIOS2_DTB_SOURCE_BOOL is enabled. Fixes: 7b937cc243e5 ("of: Create of_root if no dtb provided by firmware") Cc: Frank Rowand Cc: Stephen Boyd Cc: Rob Herring Signed-off-by: Guenter Roeck commit 90d4fe6154473787654ed9f33bfce0cac30e44bd Author: Huacai Chen AuthorDate: Thu Mar 28 15:32:34 2024 +0800 Commit: Guenter Roeck CommitDate: Mon Apr 1 07:42:39 2024 -0700 LoongArch: Make __virt_addr_valid() work with KFENCE When enabling both CONFIG_KFENCE and CONFIG_DEBUG_SG, I get the following backtraces when running LongArch kernels. [ 2.496257] kernel BUG at include/linux/scatterlist.h:187! ... [ 2.501925] Call Trace: [ 2.501950] [<9000000004ad59c4>] sg_init_one+0xac/0xc0 [ 2.502204] [<9000000004a438f8>] do_test_kpp+0x278/0x6e4 [ 2.502353] [<9000000004a43dd4>] alg_test_kpp+0x70/0xf4 [ 2.502494] [<9000000004a41b48>] alg_test+0x128/0x690 [ 2.502631] [<9000000004a3d898>] cryptomgr_test+0x20/0x40 [ 2.502775] [<90000000041b4508>] kthread+0x138/0x158 [ 2.502912] [<9000000004161c48>] ret_from_kernel_thread+0xc/0xa4 The backtrace is always similar but not exactly the same. It is always triggered from cryptomgr_test, but not always from the same test. Analysis shows that with CONFIG_KFENCE active, the address returned from kmalloc() and friends is not always below vm_map_base. It is allocated by kfence_alloc() which at least sometimes seems to get its memory from an address space above vm_map_base. This causes __virt_addr_valid() to return false for the affected objects. Let __virt_addr_valid() return 1 for kfence pool addresses, this make __virt_addr_valid() work with KFENCE. Reported-by: Guenter Roeck Suggested-by: Guenter Roeck Signed-off-by: Huacai Chen (cherry picked from commit 49f579ddf50f98f92acb20e5d8ecd8a237625eee) Signed-off-by: Guenter Roeck commit 0eee3ace51a8ad317a516795a5bcadfa0d880a8e Author: Huacai Chen AuthorDate: Wed Mar 27 20:27:22 2024 +0800 Commit: Guenter Roeck CommitDate: Mon Apr 1 07:42:39 2024 -0700 LoongArch: Make virt_to_phys() work with KFENCE KFENCE changes virt_to_page() to be able to translate tlb mapped virtual addresses, but forget to change virt_to_phys() as well. This patch fix it, otherwise some drivers (such as virtio-blk) cannot work with KFENCE. BTW, define a simple version of virt_to_page() for !CONFIG_KFENCE. Signed-off-by: Huacai Chen (cherry picked from commit 0489e95919896d8ee3ffce020135c1297038fa9c) Signed-off-by: Guenter Roeck commit 146264009861f68947364f630cbdc175eef2cc5d Author: Uladzislau Rezki (Sony) AuthorDate: Sat Mar 23 15:15:44 2024 +0100 Commit: Guenter Roeck CommitDate: Mon Apr 1 07:42:39 2024 -0700 mm: vmalloc: Bail out early in find_vmap_area() if vmap is not init During the boot the s390 system triggers "spinlock bad magic" messages if the spinlock debugging is enabled: [ 0.465445] BUG: spinlock bad magic on CPU#0, swapper/0 [ 0.465490] lock: single+0x1860/0x1958, .magic: 00000000, .owner: /-1, .owner_cpu: 0 [ 0.466067] CPU: 0 PID: 0 Comm: swapper Not tainted 6.8.0-12955-g8e938e398669 #1 [ 0.466188] Hardware name: QEMU 8561 QEMU (KVM/Linux) [ 0.466270] Call Trace: [ 0.466470] [<00000000011f26c8>] dump_stack_lvl+0x98/0xd8 [ 0.466516] [<00000000001dcc6a>] do_raw_spin_lock+0x8a/0x108 [ 0.466545] [<000000000042146c>] find_vmap_area+0x6c/0x108 [ 0.466572] [<000000000042175a>] find_vm_area+0x22/0x40 [ 0.466597] [<000000000012f152>] __set_memory+0x132/0x150 [ 0.466624] [<0000000001cc0398>] vmem_map_init+0x40/0x118 [ 0.466651] [<0000000001cc0092>] paging_init+0x22/0x68 [ 0.466677] [<0000000001cbbed2>] setup_arch+0x52a/0x708 [ 0.466702] [<0000000001cb6140>] start_kernel+0x80/0x5c8 [ 0.466727] [<0000000000100036>] startup_continue+0x36/0x40 it happens because such system tries to access some vmap areas whereas the vmalloc initialization is not even yet done: [ 0.465490] lock: single+0x1860/0x1958, .magic: 00000000, .owner: /-1, .owner_cpu: 0 [ 0.466067] CPU: 0 PID: 0 Comm: swapper Not tainted 6.8.0-12955-g8e938e398669 #1 [ 0.466188] Hardware name: QEMU 8561 QEMU (KVM/Linux) [ 0.466270] Call Trace: [ 0.466470] dump_stack_lvl (lib/dump_stack.c:117) [ 0.466516] do_raw_spin_lock (kernel/locking/spinlock_debug.c:87 kernel/locking/spinlock_debug.c:115) [ 0.466545] find_vmap_area (mm/vmalloc.c:1059 mm/vmalloc.c:2364) [ 0.466572] find_vm_area (mm/vmalloc.c:3150) [ 0.466597] __set_memory (arch/s390/mm/pageattr.c:360 arch/s390/mm/pageattr.c:393) [ 0.466624] vmem_map_init (./arch/s390/include/asm/set_memory.h:55 arch/s390/mm/vmem.c:660) [ 0.466651] paging_init (arch/s390/mm/init.c:97) [ 0.466677] setup_arch (arch/s390/kernel/setup.c:972) [ 0.466702] start_kernel (init/main.c:899) [ 0.466727] startup_continue (arch/s390/kernel/head64.S:35) [ 0.466811] INFO: lockdep is turned off. ... [ 0.718250] vmalloc init - busy lock init 0000000002871860 [ 0.718328] vmalloc init - busy lock init 00000000028731b8 Some background. It worked before because the lock that is in question was statically defined and initialized. As of now, the locks and data structures are initialized in the vmalloc_init() function. To address that issue add the check whether the "vmap_initialized" variable is set, if not find_vmap_area() bails out on entry returning NULL. Fixes: 72210662c5a2 ("mm: vmalloc: offload free_vmap_area_lock lock") Signed-off-by: Uladzislau Rezki (Sony) Link: https://lore.kernel.org/r/20240323141544.4150-1-urezki@gmail.com Signed-off-by: Guenter Roeck commit d12e5de57569567a8e54cc118fdd31b777017a51 Author: Kemeng Shi AuthorDate: Sat Mar 23 00:55:18 2024 +0800 Commit: Guenter Roeck CommitDate: Mon Apr 1 07:42:39 2024 -0700 ext4: implement filesystem specific alloc_inode in unit test We expect inode with ext4_info_info type as following: mbt_kunit_init mbt_mb_init ext4_mb_init ext4_mb_init_backend sbi->s_buddy_cache = new_inode(sb); EXT4_I(sbi->s_buddy_cache)->i_disksize = 0; Implement alloc_inode ionde with ext4_inode_info type to avoid out-of-bounds write. Signed-off-by: Kemeng Shi Reported-by: Guenter Roeck Link: https://lore.kernel.org/r/20240322165518.8147-1-shikemeng@huaweicloud.com Signed-off-by: Guenter Roeck commit b4c66d4a04bcb6d4ff54d5da877581071c6cca15 Author: Guenter Roeck AuthorDate: Sun Feb 25 07:29:30 2024 -0800 Commit: Guenter Roeck CommitDate: Mon Apr 1 07:42:38 2024 -0700 mean_and_variance: Drop always failing tests mean_and_variance_test_2 and mean_and_variance_test_4 always fail. The input parameters to those tests are identical to the input parameters to tests 1 and 3, yet the expected result for tests 2 and 4 is different for the mean and stddev tests. That will always fail. Expected mean_and_variance_get_mean(mv) == mean[i], but mean_and_variance_get_mean(mv) == 22 (0x16) mean[i] == 10 (0xa) Drop the bad tests. Fixes: 65bc41090720 ("mean and variance: More tests") Closes: https://lore.kernel.org/lkml/065b94eb-6a24-4248-b7d7-d3212efb4787@roeck-us.net/ Cc: Kent Overstreet Signed-off-by: Guenter Roeck commit 84085c2d41a686b429b39a9097c7b96d151c497b Author: Guenter Roeck AuthorDate: Sat Feb 10 06:46:12 2024 -0800 Commit: Guenter Roeck CommitDate: Mon Apr 1 07:42:38 2024 -0700 Revert "sh: Handle calling csum_partial with misaligned data" This reverts commit cadc4e1a2b4d20d0cc0e81f2c6ba0588775e54e5. Commit cadc4e1a2b4d ("sh: Handle calling csum_partial with misaligned data") causes bad checksum calculations on unaligned data. Reverting it fixes the problem. # Subtest: checksum # module: checksum_kunit 1..5 # test_csum_fixed_random_inputs: ASSERTION FAILED at lib/checksum_kunit.c:500 Expected ( u64)result == ( u64)expec, but ( u64)result == 53378 (0xd082) ( u64)expec == 33488 (0x82d0) # test_csum_fixed_random_inputs: pass:0 fail:1 skip:0 total:1 not ok 1 test_csum_fixed_random_inputs # test_csum_all_carry_inputs: ASSERTION FAILED at lib/checksum_kunit.c:525 Expected ( u64)result == ( u64)expec, but ( u64)result == 65281 (0xff01) ( u64)expec == 65280 (0xff00) # test_csum_all_carry_inputs: pass:0 fail:1 skip:0 total:1 not ok 2 test_csum_all_carry_inputs # test_csum_no_carry_inputs: ASSERTION FAILED at lib/checksum_kunit.c:573 Expected ( u64)result == ( u64)expec, but ( u64)result == 65535 (0xffff) ( u64)expec == 65534 (0xfffe) # test_csum_no_carry_inputs: pass:0 fail:1 skip:0 total:1 not ok 3 test_csum_no_carry_inputs # test_ip_fast_csum: pass:1 fail:0 skip:0 total:1 ok 4 test_ip_fast_csum # test_csum_ipv6_magic: pass:1 fail:0 skip:0 total:1 ok 5 test_csum_ipv6_magic # checksum: pass:2 fail:3 skip:0 total:5 # Totals: pass:2 fail:3 skip:0 total:5 not ok 22 checksum Fixes: cadc4e1a2b4d ("sh: Handle calling csum_partial with misaligned data") Signed-off-by: Guenter Roeck commit 396b02a55fe04128f80586dff15d04e8a1c1538d Author: Barry Song AuthorDate: Tue Mar 19 14:09:20 2024 +1300 Commit: Guenter Roeck CommitDate: Mon Apr 1 07:42:38 2024 -0700 xtensa: remove redundant flush_dcache_page and ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE macros xtensa's flush_dcache_page() can be a no-op sometimes. There is a generic implementation for this case in include/asm-generic/ cacheflush.h. #ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE static inline void flush_dcache_page(struct page *page) { } #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #endif So remove the superfluous flush_dcache_page() definition, which also helps silence potential build warnings complaining the page variable passed to flush_dcache_page() is not used. In file included from crypto/scompress.c:12: include/crypto/scatterwalk.h: In function 'scatterwalk_pagedone': include/crypto/scatterwalk.h:76:30: warning: variable 'page' set but not used [-Wunused-but-set-variable] 76 | struct page *page; | ^~~~ crypto/scompress.c: In function 'scomp_acomp_comp_decomp': >> crypto/scompress.c:174:38: warning: unused variable 'dst_page' [-Wunused-variable] 174 | struct page *dst_page = sg_page(req->dst); | The issue was originally reported on LoongArch by kernel test robot (Huacai fixed it on LoongArch), then reported by Guenter and me on xtensa. This patch also removes lots of redundant macros which have been defined by asm-generic/cacheflush.h. Cc: Huacai Chen Cc: Herbert Xu Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202403091614.NeUw5zcv-lkp@intel.com/ Reported-by: Barry Song Closes: https://lore.kernel.org/all/CAGsJ_4yDk1+axbte7FKQEwD7X2oxUCFrEc9M5YOS1BobfDFXPA@mail.gmail.com/ Reported-by: Guenter Roeck Closes: https://lore.kernel.org/all/aaa8b7d7-5abe-47bf-93f6-407942436472@roeck-us.net/ Fixes: 77292bb8ca69 ("crypto: scomp - remove memcpy if sg_nents is 1 and pages are lowmem") Signed-off-by: Barry Song Link: https://lore.kernel.org/r/20240319010920.125192-1-21cnbao@gmail.com Signed-off-by: Guenter Roeck