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[openeuler:OLK-6.6 3508/3508] mm/memblock.c:1409:20: warning: no previous prototype for 'memblock_alloc_range_nid_flags'
by kernel test robot 10 Dec '25

10 Dec '25

Hi Ma, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: d7d7f131569485a9b6737b85cd8144196135b1a1 commit: 64018b291c1f49622c4b23b303364d760306d662 [3508/3508] mm/memblock: Introduce ability to alloc memory from specify memory region config: x86_64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20251210/202512100803.QFVpHYI3-lkp@…) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251210/202512100803.QFVpHYI3-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512100803.QFVpHYI3-lkp@intel.com/ All warnings (new ones prefixed by >>): >> mm/memblock.c:1409:20: warning: no previous prototype for 'memblock_alloc_range_nid_flags' [-Wmissing-prototypes] 1409 | phys_addr_t __init memblock_alloc_range_nid_flags(phys_addr_t size, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/memblock_alloc_range_nid_flags +1409 mm/memblock.c 1386 1387 /** 1388 * memblock_alloc_range_nid_flags - allocate boot memory block with specify flag 1389 * @size: size of memory block to be allocated in bytes 1390 * @align: alignment of the region and block's size 1391 * @start: the lower bound of the memory region to allocate (phys address) 1392 * @end: the upper bound of the memory region to allocate (phys address) 1393 * @nid: nid of the free area to find, %NUMA_NO_NODE for any node 1394 * @exact_nid: control the allocation fall back to other nodes 1395 * @flags: alloc memory from specify memblock flag 1396 * 1397 * The allocation is performed from memory region limited by 1398 * memblock.current_limit if @end == %MEMBLOCK_ALLOC_ACCESSIBLE. 1399 * 1400 * If the specified node can not hold the requested memory and @exact_nid 1401 * is false, the allocation falls back to any node in the system. 1402 * 1403 * In addition, function sets the min_count to 0 using kmemleak_alloc_phys for 1404 * allocated boot memory block, so that it is never reported as leaks. 1405 * 1406 * Return: 1407 * Physical address of allocated memory block on success, %0 on failure. 1408 */ > 1409 phys_addr_t __init memblock_alloc_range_nid_flags(phys_addr_t size, 1410 phys_addr_t align, phys_addr_t start, 1411 phys_addr_t end, int nid, 1412 bool exact_nid, 1413 enum memblock_flags flags) 1414 { 1415 phys_addr_t found; 1416 1417 if (WARN_ONCE(nid == MAX_NUMNODES, "Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead\n")) 1418 nid = NUMA_NO_NODE; 1419 1420 if (!align) { 1421 /* Can't use WARNs this early in boot on powerpc */ 1422 dump_stack(); 1423 align = SMP_CACHE_BYTES; 1424 } 1425 1426 again: 1427 found = memblock_find_in_range_node(size, align, start, end, nid, 1428 flags); 1429 if (found && !memblock_reserve(found, size)) 1430 goto done; 1431 1432 if (nid != NUMA_NO_NODE && !exact_nid) { 1433 found = memblock_find_in_range_node(size, align, start, 1434 end, NUMA_NO_NODE, 1435 flags); 1436 if (found && !memblock_reserve(found, size)) 1437 goto done; 1438 } 1439 1440 if (flags & MEMBLOCK_MIRROR) { 1441 flags &= ~MEMBLOCK_MIRROR; 1442 pr_warn_ratelimited("Could not allocate %pap bytes of mirrored memory\n", 1443 &size); 1444 goto again; 1445 } 1446 1447 return 0; 1448 1449 done: 1450 /* 1451 * Skip kmemleak for those places like kasan_init() and 1452 * early_pgtable_alloc() due to high volume. 1453 */ 1454 if (end != MEMBLOCK_ALLOC_NOLEAKTRACE) 1455 /* 1456 * Memblock allocated blocks are never reported as 1457 * leaks. This is because many of these blocks are 1458 * only referred via the physical address which is 1459 * not looked up by kmemleak. 1460 */ 1461 kmemleak_alloc_phys(found, size, 0); 1462 1463 /* 1464 * Some Virtual Machine platforms, such as Intel TDX or AMD SEV-SNP, 1465 * require memory to be accepted before it can be used by the 1466 * guest. 1467 * 1468 * Accept the memory of the allocated buffer. 1469 */ 1470 accept_memory(found, found + size); 1471 1472 return found; 1473 } 1474 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3508/3508] arch/arm64/kvm/virtcca_cvm.c:992:5: warning: no previous prototype for 'kvm_cvm_vgic_nr_lr'
by kernel test robot 10 Dec '25

10 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: d7d7f131569485a9b6737b85cd8144196135b1a1 commit: befbde867291b5bb068a97b17086ad20484b6068 [3508/3508] VirtCCA: Adapt virtcca operations by cca_base. config: arm64-randconfig-r112-20251210 (https://download.01.org/0day-ci/archive/20251210/202512101452.vWsWIlEF-lkp@…) compiler: aarch64-linux-gcc (GCC) 13.4.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251210/202512101452.vWsWIlEF-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512101452.vWsWIlEF-lkp@intel.com/ All warnings (new ones prefixed by >>): arch/arm64/kvm/virtcca_cvm.c:825:5: warning: no previous prototype for 'virtcca_get_tmi_version' [-Wmissing-prototypes] 825 | u64 virtcca_get_tmi_version(void) | ^~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/virtcca_cvm.c: In function 'kvm_load_user_data': arch/arm64/kvm/virtcca_cvm.c:885:35: error: 'struct kvm_user_data' has no member named 'data_start' 885 | (user_data.data_start + user_data.data_size < user_data.data_start)) | ^ arch/arm64/kvm/virtcca_cvm.c:885:59: error: 'struct kvm_user_data' has no member named 'data_size'; did you mean 'ram_size'? 885 | (user_data.data_start + user_data.data_size < user_data.data_start)) | ^~~~~~~~~ | ram_size arch/arm64/kvm/virtcca_cvm.c:885:80: error: 'struct kvm_user_data' has no member named 'data_start' 885 | (user_data.data_start + user_data.data_size < user_data.data_start)) | ^ arch/arm64/kvm/virtcca_cvm.c:888:58: error: 'struct kvm_user_data' has no member named 'dtb_info' 888 | if (is_dtb_info_has_extend_data(user_data.dtb_info)) { | ^ arch/arm64/kvm/virtcca_cvm.c:890:38: error: 'struct kvm_user_data' has no member named 'data_start' 890 | if (user_data.data_start + user_data.data_size > ipa_end) | ^ arch/arm64/kvm/virtcca_cvm.c:890:62: error: 'struct kvm_user_data' has no member named 'data_size'; did you mean 'ram_size'? 890 | if (user_data.data_start + user_data.data_size > ipa_end) | ^~~~~~~~~ | ram_size arch/arm64/kvm/virtcca_cvm.c:897:38: error: 'struct kvm_user_data' has no member named 'data_start' 897 | if (user_data.data_start + user_data.data_size > user_data.loader_start) | ^ arch/arm64/kvm/virtcca_cvm.c:897:62: error: 'struct kvm_user_data' has no member named 'data_size'; did you mean 'ram_size'? 897 | if (user_data.data_start + user_data.data_size > user_data.loader_start) | ^~~~~~~~~ | ram_size arch/arm64/kvm/virtcca_cvm.c:907:50: error: 'struct kvm_user_data' has no member named 'dtb_info' 907 | if (is_dtb_info_has_extend_data(user_data.dtb_info)) | ^ arch/arm64/kvm/virtcca_cvm.c:908:41: error: 'struct kvm_user_data' has no member named 'data_start' 908 | cvm->dtb_end = user_data.data_start + user_data.data_size; | ^ arch/arm64/kvm/virtcca_cvm.c:908:65: error: 'struct kvm_user_data' has no member named 'data_size'; did you mean 'ram_size'? 908 | cvm->dtb_end = user_data.data_start + user_data.data_size; | ^~~~~~~~~ | ram_size arch/arm64/kvm/virtcca_cvm.c:910:66: error: 'struct kvm_user_data' has no member named 'dtb_info' 910 | cvm->dtb_end = user_data.loader_start + user_data.dtb_info; | ^ arch/arm64/kvm/virtcca_cvm.c:911:44: error: 'struct kvm_user_data' has no member named 'data_start' 911 | cvm->mmio_start = user_data.data_start; | ^ arch/arm64/kvm/virtcca_cvm.c:912:42: error: 'struct kvm_user_data' has no member named 'data_start' 912 | cvm->mmio_end = user_data.data_start + user_data.data_size; | ^ arch/arm64/kvm/virtcca_cvm.c:912:66: error: 'struct kvm_user_data' has no member named 'data_size'; did you mean 'ram_size'? 912 | cvm->mmio_end = user_data.data_start + user_data.data_size; | ^~~~~~~~~ | ram_size arch/arm64/kvm/virtcca_cvm.c: At top level: >> arch/arm64/kvm/virtcca_cvm.c:992:5: warning: no previous prototype for 'kvm_cvm_vgic_nr_lr' [-Wmissing-prototypes] 992 | u32 kvm_cvm_vgic_nr_lr(void) | ^~~~~~~~~~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for HALTPOLL_CPUIDLE Depends on [n]: CPU_IDLE [=n] && ARCH_CPUIDLE_HALTPOLL [=y] && ARCH_HAS_OPTIMIZED_POLL [=y] Selected by [y]: - ARM64 [=y] vim +/kvm_cvm_vgic_nr_lr +992 arch/arm64/kvm/virtcca_cvm.c 991 > 992 u32 kvm_cvm_vgic_nr_lr(void) 993 { 994 return kvm_vgic_global_state.nr_lr; 995 } 996 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH openEuler-1.0-LTS] NFSD: Fix crash in nfsd4_read_release()
by Li Lingfeng 10 Dec '25

10 Dec '25

From: Chuck Lever <chuck.lever(a)oracle.com> mainline inclusion from mainline-v6.18-rc4 commit abb1f08a2121dd270193746e43b2a9373db9ad84 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDBAJB CVE: CVE-2025-40324 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- When tracing is enabled, the trace_nfsd_read_done trace point crashes during the pynfs read.testNoFh test. Fixes: 15a8b55dbb1b ("nfsd: call op_release, even when op_func returns an error") Cc: stable(a)vger.kernel.org Reviewed-by: Jeff Layton <jlayton(a)kernel.org> Signed-off-by: Chuck Lever <chuck.lever(a)oracle.com> Conflicts: fs/nfsd/nfs4proc.c [Commit 5c4583b2b78e ("nfsd: hook up nfs4_preprocess_stateid_op to the nfsd_file cache") replace rd_filp by rd_nf.] Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- fs/nfsd/nfs4proc.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 1c3e6de6bcba..ea3db7d8b567 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -796,10 +796,11 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, static void nfsd4_read_release(union nfsd4_op_u *u) { - if (u->read.rd_filp) + if (u->read.rd_filp) { + trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp, + u->read.rd_offset, u->read.rd_length); fput(u->read.rd_filp); - trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp, - u->read.rd_offset, u->read.rd_length); + } } static __be32 -- 2.31.1

2 1

[PATCH OLK-5.10] NFSD: Fix crash in nfsd4_read_release()
by Li Lingfeng 10 Dec '25

10 Dec '25

From: Chuck Lever <chuck.lever(a)oracle.com> stable inclusion from stable-v5.10.247 commit 930cb4fe3ab4061be31f20ee30bb72a66f7bb6d1 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDBAJB CVE: CVE-2025-40324 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit abb1f08a2121dd270193746e43b2a9373db9ad84 upstream. When tracing is enabled, the trace_nfsd_read_done trace point crashes during the pynfs read.testNoFh test. Fixes: 15a8b55dbb1b ("nfsd: call op_release, even when op_func returns an error") Cc: stable(a)vger.kernel.org Reviewed-by: Jeff Layton <jlayton(a)kernel.org> Signed-off-by: Chuck Lever <chuck.lever(a)oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- fs/nfsd/nfs4proc.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 96c4e2616b51..61c87c54cd7b 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -812,10 +812,11 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, static void nfsd4_read_release(union nfsd4_op_u *u) { - if (u->read.rd_nf) + if (u->read.rd_nf) { + trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp, + u->read.rd_offset, u->read.rd_length); nfsd_file_put(u->read.rd_nf); - trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp, - u->read.rd_offset, u->read.rd_length); + } } static __be32 -- 2.46.1

2 1

[PATCH OLK-6.6] NFSD: Fix crash in nfsd4_read_release()
by Li Lingfeng 10 Dec '25

10 Dec '25

From: Chuck Lever <chuck.lever(a)oracle.com> stable inclusion from stable-v6.6.117 commit 03524ccff698d4a77d096ed529073d91f5edee5d category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDBAJB CVE: CVE-2025-40324 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit abb1f08a2121dd270193746e43b2a9373db9ad84 upstream. When tracing is enabled, the trace_nfsd_read_done trace point crashes during the pynfs read.testNoFh test. Fixes: 15a8b55dbb1b ("nfsd: call op_release, even when op_func returns an error") Cc: stable(a)vger.kernel.org Reviewed-by: Jeff Layton <jlayton(a)kernel.org> Signed-off-by: Chuck Lever <chuck.lever(a)oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- fs/nfsd/nfs4proc.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index b2bbf3d6d177..04a2c44e0f95 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -978,10 +978,11 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, static void nfsd4_read_release(union nfsd4_op_u *u) { - if (u->read.rd_nf) + if (u->read.rd_nf) { + trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp, + u->read.rd_offset, u->read.rd_length); nfsd_file_put(u->read.rd_nf); - trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp, - u->read.rd_offset, u->read.rd_length); + } } static __be32 -- 2.46.1

2 1

[PATCH OLK-6.6 0/8] xsched: XCU Partition
by Zicheng Qu 10 Dec '25

10 Dec '25

Zicheng Qu (8): xsched: refactor CFS per-XCU rq init/deinit paths xsched: fix NULL pointer risk on attach entry allocation xsched: fix concurrent modification NULL pointer dereference in xcu.sched_class xsched: fix hung_task caused by cgroup_file_show and xcg_mutex deadlock xsched: prevent NULL deref by refcounting css and tracking offline state xsched: fix divide-by-zero caused by u64 overflow in CFS shares weight calculation xsched: DEBUG log cleanup xsched: prevent race between enqueue_ctx and xsched_task_free include/linux/xsched.h | 36 +++++- kernel/xsched/cfs.c | 31 +++++- kernel/xsched/cfs_quota.c | 9 ++ kernel/xsched/cgroup.c | 224 +++++++++++++++++++++----------------- kernel/xsched/core.c | 9 +- kernel/xsched/rt.c | 19 +--- kernel/xsched/vstream.c | 3 + 7 files changed, 200 insertions(+), 131 deletions(-) -- 2.34.1

2 9

[openeuler:OLK-5.10 3399/3399] block/bio.c:412: warning: Function parameter or member 'nr_iovecs_int' not described in 'bio_alloc_bioset'
by kernel test robot 10 Dec '25

10 Dec '25

Hi Li, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 7579fd89cb4a201d22bd5b78f48df5ce339c0b2d commit: 6381672514c4d94637cd4db830b8644440abe99a [3399/3399] block: fix kabi broken config: x86_64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20251210/202512100653.S0mIExGw-lkp@…) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251210/202512100653.S0mIExGw-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512100653.S0mIExGw-lkp@intel.com/ All warnings (new ones prefixed by >>): >> block/bio.c:412: warning: Function parameter or member 'nr_iovecs_int' not described in 'bio_alloc_bioset' >> block/bio.c:412: warning: Excess function parameter 'nr_iovecs' description in 'bio_alloc_bioset' vim +412 block/bio.c df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 374 ^1da177e4c3f41 fs/bio.c Linus Torvalds 2005-04-16 375 /** ^1da177e4c3f41 fs/bio.c Linus Torvalds 2005-04-16 376 * bio_alloc_bioset - allocate a bio for I/O 519c8e9ffd8614 block/bio.c Randy Dunlap 2017-10-16 377 * @gfp_mask: the GFP_* mask given to the slab allocator ^1da177e4c3f41 fs/bio.c Linus Torvalds 2005-04-16 378 * @nr_iovecs: number of iovecs to pre-allocate db18efac0bd644 fs/bio.c Jaak Ristioja 2010-01-15 379 * @bs: the bio_set to allocate from. ^1da177e4c3f41 fs/bio.c Linus Torvalds 2005-04-16 380 * ^1da177e4c3f41 fs/bio.c Linus Torvalds 2005-04-16 381 * Description: 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 382 * If @bs is NULL, uses kmalloc() to allocate the bio; else the allocation is 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 383 * backed by the @bs's mempool. 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 384 * d0164adc89f6bb block/bio.c Mel Gorman 2015-11-06 385 * When @bs is not NULL, if %__GFP_DIRECT_RECLAIM is set then bio_alloc will d0164adc89f6bb block/bio.c Mel Gorman 2015-11-06 386 * always be able to allocate a bio. This is due to the mempool guarantees. d0164adc89f6bb block/bio.c Mel Gorman 2015-11-06 387 * To make this work, callers must never allocate more than 1 bio at a time d0164adc89f6bb block/bio.c Mel Gorman 2015-11-06 388 * from this pool. Callers that need to allocate more than 1 bio must always d0164adc89f6bb block/bio.c Mel Gorman 2015-11-06 389 * submit the previously allocated bio for IO before attempting to allocate d0164adc89f6bb block/bio.c Mel Gorman 2015-11-06 390 * a new one. Failure to do so can cause deadlocks under memory pressure. 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 391 * ed00aabd5eb9fb block/bio.c Christoph Hellwig 2020-07-01 392 * Note that when running under submit_bio_noacct() (i.e. any block df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 393 * driver), bios are not submitted until after you return - see the code in ed00aabd5eb9fb block/bio.c Christoph Hellwig 2020-07-01 394 * submit_bio_noacct() that converts recursion into iteration, to prevent df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 395 * stack overflows. df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 396 * df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 397 * This would normally mean allocating multiple bios under ed00aabd5eb9fb block/bio.c Christoph Hellwig 2020-07-01 398 * submit_bio_noacct() would be susceptible to deadlocks, but we have df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 399 * deadlock avoidance code that resubmits any blocked bios from a rescuer df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 400 * thread. df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 401 * df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 402 * However, we do not guarantee forward progress for allocations from other df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 403 * mempools. Doing multiple allocations from the same mempool under ed00aabd5eb9fb block/bio.c Christoph Hellwig 2020-07-01 404 * submit_bio_noacct() should be avoided - instead, use bio_set's front_pad df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 405 * for per bio allocations. df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 406 * 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 407 * RETURNS: 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 408 * Pointer to new bio on success, NULL on failure. 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 409 */ 6381672514c4d9 block/bio.c Li Lingfeng 2025-02-10 410 struct bio *bio_alloc_bioset(gfp_t gfp_mask, unsigned int nr_iovecs_int, 7a88fa19194458 block/bio.c Dan Carpenter 2017-03-23 411 struct bio_set *bs) ^1da177e4c3f41 fs/bio.c Linus Torvalds 2005-04-16 @412 { df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 413 gfp_t saved_gfp = gfp_mask; 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 414 unsigned front_pad; 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 415 unsigned inline_vecs; 34053979fb1d92 fs/bio.c Ingo Molnar 2009-02-21 416 struct bio_vec *bvl = NULL; 451a9ebf653d28 fs/bio.c Tejun Heo 2009-04-15 417 struct bio *bio; 451a9ebf653d28 fs/bio.c Tejun Heo 2009-04-15 418 void *p; 6381672514c4d9 block/bio.c Li Lingfeng 2025-02-10 419 unsigned short nr_iovecs = (unsigned short)nr_iovecs_int; 0a0d96b03a1f3b fs/bio.c Jens Axboe 2008-09-11 420 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 421 if (!bs) { 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 422 if (nr_iovecs > UIO_MAXIOV) 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 423 return NULL; 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 424 1f4fe21cf45c79 block/bio.c Gustavo A. R. Silva 2020-06-19 425 p = kmalloc(struct_size(bio, bi_inline_vecs, nr_iovecs), gfp_mask); 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 426 front_pad = 0; 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 427 inline_vecs = nr_iovecs; 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 428 } else { d8f429e1669b97 block/bio.c Junichi Nomura 2014-10-03 429 /* should not use nobvec bioset for nr_iovecs > 0 */ 8aa6ba2f6e3dea block/bio.c Kent Overstreet 2018-05-08 430 if (WARN_ON_ONCE(!mempool_initialized(&bs->bvec_pool) && 8aa6ba2f6e3dea block/bio.c Kent Overstreet 2018-05-08 431 nr_iovecs > 0)) d8f429e1669b97 block/bio.c Junichi Nomura 2014-10-03 432 return NULL; df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 433 /* ed00aabd5eb9fb block/bio.c Christoph Hellwig 2020-07-01 434 * submit_bio_noacct() converts recursion to iteration; this df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 435 * means if we're running beneath it, any bios we allocate and df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 436 * submit will not be submitted (and thus freed) until after we df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 437 * return. df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 438 * df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 439 * This exposes us to a potential deadlock if we allocate df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 440 * multiple bios from the same bio_set() while running ed00aabd5eb9fb block/bio.c Christoph Hellwig 2020-07-01 441 * underneath submit_bio_noacct(). If we were to allocate df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 442 * multiple bios (say a stacking block driver that was splitting df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 443 * bios), we would deadlock if we exhausted the mempool's df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 444 * reserve. df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 445 * df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 446 * We solve this, and guarantee forward progress, with a rescuer df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 447 * workqueue per bio_set. If we go to allocate and there are df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 448 * bios on current->bio_list, we first try the allocation d0164adc89f6bb block/bio.c Mel Gorman 2015-11-06 449 * without __GFP_DIRECT_RECLAIM; if that fails, we punt those d0164adc89f6bb block/bio.c Mel Gorman 2015-11-06 450 * bios we would be blocking to the rescuer workqueue before d0164adc89f6bb block/bio.c Mel Gorman 2015-11-06 451 * we retry with the original gfp_flags. df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 452 */ df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 453 f5fe1b51905df7 block/bio.c NeilBrown 2017-03-10 454 if (current->bio_list && f5fe1b51905df7 block/bio.c NeilBrown 2017-03-10 455 (!bio_list_empty(&current->bio_list[0]) || 47e0fb461fca1a block/bio.c NeilBrown 2017-06-18 456 !bio_list_empty(&current->bio_list[1])) && 47e0fb461fca1a block/bio.c NeilBrown 2017-06-18 457 bs->rescue_workqueue) d0164adc89f6bb block/bio.c Mel Gorman 2015-11-06 458 gfp_mask &= ~__GFP_DIRECT_RECLAIM; df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 459 8aa6ba2f6e3dea block/bio.c Kent Overstreet 2018-05-08 460 p = mempool_alloc(&bs->bio_pool, gfp_mask); df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 461 if (!p && gfp_mask != saved_gfp) { df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 462 punt_bios_to_rescuer(bs); df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 463 gfp_mask = saved_gfp; 8aa6ba2f6e3dea block/bio.c Kent Overstreet 2018-05-08 464 p = mempool_alloc(&bs->bio_pool, gfp_mask); df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 465 } df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 466 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 467 front_pad = bs->front_pad; 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 468 inline_vecs = BIO_INLINE_VECS; 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 469 } 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 470 451a9ebf653d28 fs/bio.c Tejun Heo 2009-04-15 471 if (unlikely(!p)) 451a9ebf653d28 fs/bio.c Tejun Heo 2009-04-15 472 return NULL; ^1da177e4c3f41 fs/bio.c Linus Torvalds 2005-04-16 473 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 474 bio = p + front_pad; 3a83f4677539bc block/bio.c Ming Lei 2016-11-22 475 bio_init(bio, NULL, 0); 34053979fb1d92 fs/bio.c Ingo Molnar 2009-02-21 476 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 477 if (nr_iovecs > inline_vecs) { ed996a52c868b6 block/bio.c Christoph Hellwig 2016-07-19 478 958384da6a734e block/bio.c Christoph Hellwig 2025-02-10 479 bvl = bvec_alloc(&bs->bvec_pool, &nr_iovecs, gfp_mask); df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 480 if (!bvl && gfp_mask != saved_gfp) { df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 481 punt_bios_to_rescuer(bs); df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 482 gfp_mask = saved_gfp; 958384da6a734e block/bio.c Christoph Hellwig 2025-02-10 483 bvl = bvec_alloc(&bs->bvec_pool, &nr_iovecs, gfp_mask); df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 484 } df2cb6daa4cbc3 fs/bio.c Kent Overstreet 2012-09-10 485 34053979fb1d92 fs/bio.c Ingo Molnar 2009-02-21 486 if (unlikely(!bvl)) 34053979fb1d92 fs/bio.c Ingo Molnar 2009-02-21 487 goto err_free; a38352e0ac02db fs/bio.c Kent Overstreet 2012-05-25 488 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 489 } else if (nr_iovecs) { 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 490 bvl = bio->bi_inline_vecs; 392ddc32982a5c fs/bio.c Jens Axboe 2008-12-23 491 } 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 492 3f86a82aeb03e6 fs/bio.c Kent Overstreet 2012-09-06 493 bio->bi_pool = bs; 392ddc32982a5c fs/bio.c Jens Axboe 2008-12-23 494 bio->bi_max_vecs = nr_iovecs; ^1da177e4c3f41 fs/bio.c Linus Torvalds 2005-04-16 495 bio->bi_io_vec = bvl; ^1da177e4c3f41 fs/bio.c Linus Torvalds 2005-04-16 496 return bio; 34053979fb1d92 fs/bio.c Ingo Molnar 2009-02-21 497 34053979fb1d92 fs/bio.c Ingo Molnar 2009-02-21 498 err_free: 8aa6ba2f6e3dea block/bio.c Kent Overstreet 2018-05-08 499 mempool_free(p, &bs->bio_pool); 34053979fb1d92 fs/bio.c Ingo Molnar 2009-02-21 500 return NULL; ^1da177e4c3f41 fs/bio.c Linus Torvalds 2005-04-16 501 } a112a71d45b5e4 fs/bio.c H Hartley Sweeten 2009-09-26 502 EXPORT_SYMBOL(bio_alloc_bioset); ^1da177e4c3f41 fs/bio.c Linus Torvalds 2005-04-16 503 :::::: The code at line 412 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds(a)ppc970.osdl.org> :::::: CC: Linus Torvalds <torvalds(a)ppc970.osdl.org> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3508/3508] mm/madvise.c:297:6: warning: no previous prototype for 'force_swapin_vma'
by kernel test robot 10 Dec '25

10 Dec '25

Hi Liu, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: d7d7f131569485a9b6737b85cd8144196135b1a1 commit: 92a0eb9bde6c03412b39f9f3d20968c091ea3b46 [3508/3508] memcg: introduce per-memcg swapin interface config: x86_64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20251210/202512100526.hg7amXND-lkp@…) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251210/202512100526.hg7amXND-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512100526.hg7amXND-lkp@intel.com/ All warnings (new ones prefixed by >>): >> mm/madvise.c:297:6: warning: no previous prototype for 'force_swapin_vma' [-Wmissing-prototypes] 297 | void force_swapin_vma(struct vm_area_struct *vma) | ^~~~~~~~~~~~~~~~ vim +/force_swapin_vma +297 mm/madvise.c 280 281 #ifdef CONFIG_MEMCG_SWAP_QOS 282 void force_swapin_vma(struct vm_area_struct *vma) 283 { 284 struct file *file = vma->vm_file; 285 286 if (!can_madv_lru_vma(vma)) 287 return; 288 289 if (!file) { 290 walk_page_vma(vma, &swapin_walk_ops, vma); 291 lru_add_drain(); 292 } else if (shmem_mapping(file->f_mapping)) 293 shmem_swapin_range(vma, vma->vm_start, 294 vma->vm_end, file->f_mapping); 295 } 296 #else > 297 void force_swapin_vma(struct vm_area_struct *vma) 298 { 299 } 300 #endif 301 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10 3399/3399] drivers/acpi/numa/hmat.c:726:6: warning: no previous prototype for 'hmat_restore_target'
by kernel test robot 10 Dec '25

10 Dec '25

Hi Zhang, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 7579fd89cb4a201d22bd5b78f48df5ce339c0b2d commit: 2e1b00fcf1e3152a1e73846f5f9ec37cef088a65 [3399/3399] ACPI/HMAT: Add missing locality information for hot-added device config: x86_64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20251210/202512100332.Dzr4IpBp-lkp@…) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251210/202512100332.Dzr4IpBp-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512100332.Dzr4IpBp-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/acpi/numa/hmat.c:726:6: warning: no previous prototype for 'hmat_restore_target' [-Wmissing-prototypes] 726 | void hmat_restore_target(int nid) | ^~~~~~~~~~~~~~~~~~~ vim +/hmat_restore_target +726 drivers/acpi/numa/hmat.c 725 > 726 void hmat_restore_target(int nid) 727 { 728 struct memory_target *target; 729 int pxm; 730 731 pxm = node_to_pxm(nid); 732 target = find_mem_target(pxm); 733 if (!target) 734 return; 735 736 mutex_lock(&target_lock); 737 hmat_register_target_cache(target); 738 hmat_register_target_perf(target, 0); 739 hmat_register_target_perf(target, 1); 740 mutex_unlock(&target_lock); 741 } 742 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10 3388/3388] kernel/sched/core.c:8279:18: error: member reference type 'struct mem_cgroup *' is a pointer; did you mean to use '->'?
by kernel test robot 10 Dec '25

10 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: ea8b5fbcdf7f5ce2d966ae6aa4e95e2ebde6cb03 commit: b7772972a0a76efac27078392f3f706914fe2af7 [3388/3388] sched/core: Add cpu.steal_task in cgroup v1 cpu subsystem config: x86_64-randconfig-r054-20251209 (https://download.01.org/0day-ci/archive/20251210/202512101034.mDWav7mE-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 6ec8c4351cfc1d0627d1633b02ea787bd29c77d8) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251210/202512101034.mDWav7mE-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512101034.mDWav7mE-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from <built-in>:2: In file included from include/linux/compiler_types.h:69: include/linux/compiler-clang.h:34:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined] 34 | #define __SANITIZE_ADDRESS__ | ^ <built-in>:352:9: note: previous definition is here 352 | #define __SANITIZE_ADDRESS__ 1 | ^ kernel/sched/core.c:2750:6: warning: no previous prototype for function 'sched_set_stop_task' [-Wmissing-prototypes] 2750 | void sched_set_stop_task(int cpu, struct task_struct *stop) | ^ kernel/sched/core.c:2750:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2750 | void sched_set_stop_task(int cpu, struct task_struct *stop) | ^ | static kernel/sched/core.c:8279:3: error: use of undeclared identifier 'root_task_group'; did you mean 'root_mem_cgroup'? 8279 | root_task_group.steal_task = TG_STEAL_NO; | ^~~~~~~~~~~~~~~ | root_mem_cgroup include/linux/memcontrol.h:461:27: note: 'root_mem_cgroup' declared here 461 | extern struct mem_cgroup *root_mem_cgroup; | ^ >> kernel/sched/core.c:8279:18: error: member reference type 'struct mem_cgroup *' is a pointer; did you mean to use '->'? 8279 | root_task_group.steal_task = TG_STEAL_NO; | ~~~~~~~~~~~~~~~^ | -> >> kernel/sched/core.c:8279:19: error: no member named 'steal_task' in 'struct mem_cgroup' 8279 | root_task_group.steal_task = TG_STEAL_NO; | ~~~~~~~~~~~~~~~ ^ kernel/sched/core.c:8279:32: error: use of undeclared identifier 'TG_STEAL_NO' 8279 | root_task_group.steal_task = TG_STEAL_NO; | ^~~~~~~~~~~ 2 warnings and 4 errors generated. vim +8279 kernel/sched/core.c 8253 8254 wait_bit_init(); 8255 8256 #ifdef CONFIG_FAIR_GROUP_SCHED 8257 ptr += 2 * nr_cpu_ids * sizeof(void **); 8258 #endif 8259 #ifdef CONFIG_RT_GROUP_SCHED 8260 ptr += 2 * nr_cpu_ids * sizeof(void **); 8261 #endif 8262 if (ptr) { 8263 ptr = (unsigned long)kzalloc(ptr, GFP_NOWAIT); 8264 8265 #ifdef CONFIG_FAIR_GROUP_SCHED 8266 root_task_group.se = (struct sched_entity **)ptr; 8267 ptr += nr_cpu_ids * sizeof(void **); 8268 8269 root_task_group.cfs_rq = (struct cfs_rq **)ptr; 8270 ptr += nr_cpu_ids * sizeof(void **); 8271 8272 root_task_group.shares = ROOT_TASK_GROUP_LOAD; 8273 init_cfs_bandwidth(&root_task_group.cfs_bandwidth); 8274 #endif /* CONFIG_FAIR_GROUP_SCHED */ 8275 #ifdef CONFIG_QOS_SCHED_SMT_EXPELLER 8276 root_task_group.smt_expell = TG_SMT_EXPELL; 8277 #endif 8278 #ifdef CONFIG_SCHED_STEAL > 8279 root_task_group.steal_task = TG_STEAL_NO; 8280 #endif 8281 #ifdef CONFIG_RT_GROUP_SCHED 8282 root_task_group.rt_se = (struct sched_rt_entity **)ptr; 8283 ptr += nr_cpu_ids * sizeof(void **); 8284 8285 root_task_group.rt_rq = (struct rt_rq **)ptr; 8286 ptr += nr_cpu_ids * sizeof(void **); 8287 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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