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[openeuler:OLK-5.10 25152/30000] drivers/net/ub/dev/ubl.c:92:1: warning: 'static' is not at beginning of declaration
by kernel test robot 23 Mar '24

23 Mar '24

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 459341c4b4845b283c7a884e6a0dc4bd8cdb89e6 commit: eb44201ee79cffdcf1b16759a54940dca047aae5 [25152/30000] ubl: add CONFIG_UBL definition and UBL interface config: x86_64-randconfig-103-20240323 (https://download.01.org/0day-ci/archive/20240323/202403231743.sBKdJNRn-lkp@…) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240323/202403231743.sBKdJNRn-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/202403231743.sBKdJNRn-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/net/ub/dev/ubl.c:92:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration] 92 | const static struct header_ops ubl_header_ops ____cacheline_aligned = { | ^~~~~ vim +/static +92 drivers/net/ub/dev/ubl.c 91 > 92 const static struct header_ops ubl_header_ops ____cacheline_aligned = { 93 .create = ubl_create_header, 94 .parse_protocol = ubl_header_parse_protocol, 95 }; 96 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6 00/11] Backport Introduce __mt_dup() to improve the performance of fork()
by Peng Zhang 23 Mar '24

23 Mar '24

From: ZhangPeng <zhangpeng362(a)huawei.com> This series introduces __mt_dup() to improve the performance of fork(). Also backport a bugfix to avoid conflicts. Liam R. Howlett (1): radix tree test suite: fix allocation calculation in kmem_cache_alloc_bulk() Peng Zhang (10): maple_tree: add mt_free_one() and mt_attr() helpers maple_tree: introduce {mtree,mas}_lock_nested() maple_tree: introduce interfaces __mt_dup() and mtree_dup() radix tree test suite: align kmem_cache_alloc_bulk() with kernel behavior. maple_tree: add test for mtree_dup() maple_tree: update the documentation of maple tree maple_tree: skip other tests when BENCH is enabled maple_tree: update check_forking() and bench_forking() maple_tree: preserve the tree attributes when destroying maple tree fork: use __mt_dup() to duplicate maple tree in dup_mmap() Documentation/core-api/maple_tree.rst | 4 + include/linux/maple_tree.h | 7 + include/linux/mm.h | 11 + kernel/fork.c | 40 ++- lib/maple_tree.c | 288 +++++++++++++++++++- lib/test_maple_tree.c | 123 +++++---- mm/internal.h | 11 - mm/memory.c | 7 +- mm/mmap.c | 9 +- tools/include/linux/rwsem.h | 4 + tools/include/linux/spinlock.h | 1 + tools/testing/radix-tree/linux.c | 49 +++- tools/testing/radix-tree/maple.c | 363 ++++++++++++++++++++++++++ 13 files changed, 813 insertions(+), 104 deletions(-) -- 2.25.1

2 12

[PATCH OLK-5.10] mm/sparsemem: fix race in accessing memory_section->usage
by Peng Zhang 23 Mar '24

23 Mar '24

From: Charan Teja Kalla <quic_charante(a)quicinc.com> mainline inclusion from mainline-v6.8-rc1 commit 5ec8e8ea8b7783fab150cf86404fc38cb4db8800 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I97NHX CVE: CVE-2023-52489 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… ------------------------------------------------------ The below race is observed on a PFN which falls into the device memory region with the system memory configuration where PFN's are such that [ZONE_NORMAL ZONE_DEVICE ZONE_NORMAL]. Since normal zone start and end pfn contains the device memory PFN's as well, the compaction triggered will try on the device memory PFN's too though they end up in NOP(because pfn_to_online_page() returns NULL for ZONE_DEVICE memory sections). When from other core, the section mappings are being removed for the ZONE_DEVICE region, that the PFN in question belongs to, on which compaction is currently being operated is resulting into the kernel crash with CONFIG_SPASEMEM_VMEMAP enabled. The crash logs can be seen at [1]. compact_zone() memunmap_pages ------------- --------------- __pageblock_pfn_to_page ...... (a)pfn_valid(): valid_section()//return true (b)__remove_pages()-> sparse_remove_section()-> section_deactivate(): [Free the array ms->usage and set ms->usage = NULL] pfn_section_valid() [Access ms->usage which is NULL] NOTE: From the above it can be said that the race is reduced to between the pfn_valid()/pfn_section_valid() and the section deactivate with SPASEMEM_VMEMAP enabled. The commit b943f045a9af("mm/sparse: fix kernel crash with pfn_section_valid check") tried to address the same problem by clearing the SECTION_HAS_MEM_MAP with the expectation of valid_section() returns false thus ms->usage is not accessed. Fix this issue by the below steps: a) Clear SECTION_HAS_MEM_MAP before freeing the ->usage. b) RCU protected read side critical section will either return NULL when SECTION_HAS_MEM_MAP is cleared or can successfully access ->usage. c) Free the ->usage with kfree_rcu() and set ms->usage = NULL. No attempt will be made to access ->usage after this as the SECTION_HAS_MEM_MAP is cleared thus valid_section() return false. Thanks to David/Pavan for their inputs on this patch. [1] https://lore.kernel.org/linux-mm/994410bb-89aa-d987-1f50-f514903c55aa@quici… On Snapdragon SoC, with the mentioned memory configuration of PFN's as [ZONE_NORMAL ZONE_DEVICE ZONE_NORMAL], we are able to see bunch of issues daily while testing on a device farm. For this particular issue below is the log. Though the below log is not directly pointing to the pfn_section_valid(){ ms->usage;}, when we loaded this dump on T32 lauterbach tool, it is pointing. [ 540.578056] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 540.578068] Mem abort info: [ 540.578070] ESR = 0x0000000096000005 [ 540.578073] EC = 0x25: DABT (current EL), IL = 32 bits [ 540.578077] SET = 0, FnV = 0 [ 540.578080] EA = 0, S1PTW = 0 [ 540.578082] FSC = 0x05: level 1 translation fault [ 540.578085] Data abort info: [ 540.578086] ISV = 0, ISS = 0x00000005 [ 540.578088] CM = 0, WnR = 0 [ 540.579431] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBSBTYPE=--) [ 540.579436] pc : __pageblock_pfn_to_page+0x6c/0x14c [ 540.579454] lr : compact_zone+0x994/0x1058 [ 540.579460] sp : ffffffc03579b510 [ 540.579463] x29: ffffffc03579b510 x28: 0000000000235800 x27:000000000000000c [ 540.579470] x26: 0000000000235c00 x25: 0000000000000068 x24:ffffffc03579b640 [ 540.579477] x23: 0000000000000001 x22: ffffffc03579b660 x21:0000000000000000 [ 540.579483] x20: 0000000000235bff x19: ffffffdebf7e3940 x18:ffffffdebf66d140 [ 540.579489] x17: 00000000739ba063 x16: 00000000739ba063 x15:00000000009f4bff [ 540.579495] x14: 0000008000000000 x13: 0000000000000000 x12:0000000000000001 [ 540.579501] x11: 0000000000000000 x10: 0000000000000000 x9 :ffffff897d2cd440 [ 540.579507] x8 : 0000000000000000 x7 : 0000000000000000 x6 :ffffffc03579b5b4 [ 540.579512] x5 : 0000000000027f25 x4 : ffffffc03579b5b8 x3 :0000000000000001 [ 540.579518] x2 : ffffffdebf7e3940 x1 : 0000000000235c00 x0 :0000000000235800 [ 540.579524] Call trace: [ 540.579527] __pageblock_pfn_to_page+0x6c/0x14c [ 540.579533] compact_zone+0x994/0x1058 [ 540.579536] try_to_compact_pages+0x128/0x378 [ 540.579540] __alloc_pages_direct_compact+0x80/0x2b0 [ 540.579544] __alloc_pages_slowpath+0x5c0/0xe10 [ 540.579547] __alloc_pages+0x250/0x2d0 [ 540.579550] __iommu_dma_alloc_noncontiguous+0x13c/0x3fc [ 540.579561] iommu_dma_alloc+0xa0/0x320 [ 540.579565] dma_alloc_attrs+0xd4/0x108 [quic_charante(a)quicinc.com: use kfree_rcu() in place of synchronize_rcu(), per David] Link: https://lkml.kernel.org/r/1698403778-20938-1-git-send-email-quic_charante@q… Link: https://lkml.kernel.org/r/1697202267-23600-1-git-send-email-quic_charante@q… Fixes: f46edbd1b151 ("mm/sparsemem: add helpers track active portions of a section at boot") Signed-off-by: Charan Teja Kalla <quic_charante(a)quicinc.com> Cc: Aneesh Kumar K.V <aneesh.kumar(a)linux.ibm.com> Cc: Dan Williams <dan.j.williams(a)intel.com> Cc: David Hildenbrand <david(a)redhat.com> Cc: Mel Gorman <mgorman(a)techsingularity.net> Cc: Oscar Salvador <osalvador(a)suse.de> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Conflicts: include/linux/mmzone.h Signed-off-by: ZhangPeng <zhangpeng362(a)huawei.com> --- include/linux/mmzone.h | 15 ++++++++++++--- mm/sparse.c | 17 +++++++++-------- 2 files changed, 21 insertions(+), 11 deletions(-) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 0a70b4bdd236..5398656315e1 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -1229,6 +1229,7 @@ struct mem_section_usage { #ifdef CONFIG_SPARSEMEM_VMEMMAP DECLARE_BITMAP(subsection_map, SUBSECTIONS_PER_SECTION); #endif + KABI_EXTEND(struct rcu_head rcu) /* See declaration of similar field in struct zone */ unsigned long pageblock_flags[0]; }; @@ -1391,7 +1392,7 @@ static inline int pfn_section_valid(struct mem_section *ms, unsigned long pfn) { int idx = subsection_map_index(pfn); - return test_bit(idx, ms->usage->subsection_map); + return test_bit(idx, READ_ONCE(ms->usage)->subsection_map); } #else static inline int pfn_section_valid(struct mem_section *ms, unsigned long pfn) @@ -1404,17 +1405,25 @@ static inline int pfn_section_valid(struct mem_section *ms, unsigned long pfn) static inline int pfn_valid(unsigned long pfn) { struct mem_section *ms; + int ret; if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS) return 0; ms = __nr_to_section(pfn_to_section_nr(pfn)); - if (!valid_section(ms)) + rcu_read_lock(); + if (!valid_section(ms)) { + rcu_read_unlock(); return 0; + } + /* * Traditionally early sections always returned pfn_valid() for * the entire section-sized span. */ - return early_section(ms) || pfn_section_valid(ms, pfn); + ret = early_section(ms) || pfn_section_valid(ms, pfn); + rcu_read_unlock(); + + return ret; } #endif diff --git a/mm/sparse.c b/mm/sparse.c index d92a29000d66..45b3571091a8 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -809,6 +809,13 @@ static void section_deactivate(unsigned long pfn, unsigned long nr_pages, if (empty) { unsigned long section_nr = pfn_to_section_nr(pfn); + /* + * Mark the section invalid so that valid_section() + * return false. This prevents code from dereferencing + * ms->usage array. + */ + ms->section_mem_map &= ~SECTION_HAS_MEM_MAP; + /* * When removing an early section, the usage map is kept (as the * usage maps of other sections fall into the same page). It @@ -817,16 +824,10 @@ static void section_deactivate(unsigned long pfn, unsigned long nr_pages, * was allocated during boot. */ if (!PageReserved(virt_to_page(ms->usage))) { - kfree(ms->usage); - ms->usage = NULL; + kfree_rcu(ms->usage, rcu); + WRITE_ONCE(ms->usage, NULL); } memmap = sparse_decode_mem_map(ms->section_mem_map, section_nr); - /* - * Mark the section invalid so that valid_section() - * return false. This prevents code from dereferencing - * ms->usage array. - */ - ms->section_mem_map &= ~SECTION_HAS_MEM_MAP; } /* -- 2.25.1

2 1

[openeuler:OLK-5.10 21053/30000] drivers/net/ethernet/nebula-matrix/m1600/debug.c:564:39: warning: '%d' directive output may be truncated writing between 1 and 10 bytes into a region of size 9
by kernel test robot 23 Mar '24

23 Mar '24

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 459341c4b4845b283c7a884e6a0dc4bd8cdb89e6 commit: 01e6e2075c432fde7fb5a66202b41bbd469de620 [21053/30000] Net: m1600: Add m1600-driver for nebula-matrix m1600 series smart NIC. config: x86_64-randconfig-075-20240323 (https://download.01.org/0day-ci/archive/20240323/202403231156.PXmnaRGK-lkp@…) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240323/202403231156.PXmnaRGK-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/202403231156.PXmnaRGK-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/net/ethernet/nebula-matrix/m1600/debug.c:18:0: drivers/net/ethernet/nebula-matrix/m1600/ethtool.h:131:19: warning: 'nbl_priv_flags' defined but not used [-Wunused-const-variable=] static const char nbl_priv_flags[][ETH_GSTRING_LEN] = { ^~~~~~~~~~~~~~ drivers/net/ethernet/nebula-matrix/m1600/ethtool.h:116:19: warning: 'nbl_gstrings_test' defined but not used [-Wunused-const-variable=] static const char nbl_gstrings_test[][ETH_GSTRING_LEN] = { ^~~~~~~~~~~~~~~~~ drivers/net/ethernet/nebula-matrix/m1600/ethtool.h:57:39: warning: 'nbl_gstrings_stats' defined but not used [-Wunused-const-variable=] static const struct nbl_ethtool_stats nbl_gstrings_stats[] = { ^~~~~~~~~~~~~~~~~~ drivers/net/ethernet/nebula-matrix/m1600/ethtool.h:13:18: warning: 'nbl_regs_dump_list' defined but not used [-Wunused-const-variable=] static const u32 nbl_regs_dump_list[] = { ^~~~~~~~~~~~~~~~~~ drivers/net/ethernet/nebula-matrix/m1600/debug.c: In function 'nbl_debugfs_hw_init': >> drivers/net/ethernet/nebula-matrix/m1600/debug.c:564:39: warning: '%d' directive output may be truncated writing between 1 and 10 bytes into a region of size 9 [-Wformat-truncation=] snprintf(buf, sizeof(buf), "txring-%d", i); ^~ drivers/net/ethernet/nebula-matrix/m1600/debug.c:564:31: note: directive argument in the range [0, 2147483646] snprintf(buf, sizeof(buf), "txring-%d", i); ^~~~~~~~~~~ drivers/net/ethernet/nebula-matrix/m1600/debug.c:564:4: note: 'snprintf' output between 9 and 18 bytes into a destination of size 16 snprintf(buf, sizeof(buf), "txring-%d", i); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/nebula-matrix/m1600/debug.c:573:39: warning: '%d' directive output may be truncated writing between 1 and 10 bytes into a region of size 9 [-Wformat-truncation=] snprintf(buf, sizeof(buf), "rxring-%d", i); ^~ drivers/net/ethernet/nebula-matrix/m1600/debug.c:573:31: note: directive argument in the range [0, 2147483646] snprintf(buf, sizeof(buf), "rxring-%d", i); ^~~~~~~~~~~ drivers/net/ethernet/nebula-matrix/m1600/debug.c:573:4: note: 'snprintf' output between 9 and 18 bytes into a destination of size 16 snprintf(buf, sizeof(buf), "rxring-%d", i); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +564 drivers/net/ethernet/nebula-matrix/m1600/debug.c 534 535 /* function init and cleanup */ 536 void nbl_debugfs_hw_init(struct nbl_hw *hw) 537 { 538 int i; 539 char buf[16]; 540 struct nbl_adapter *adapter; 541 542 adapter = (struct nbl_adapter *)hw->back; 543 544 if (!nblx4_debug_root) 545 return; 546 547 snprintf(buf, sizeof(buf), "%04x:%02x:%02x.%x", 548 pci_domain_nr(adapter->pdev->bus), hw->bus, hw->devid, hw->function); 549 hw->nbl_debug_root = debugfs_create_dir(buf, nblx4_debug_root); 550 551 if (is_af(hw)) { 552 debugfs_create_file("dvn", 0444, 553 hw->nbl_debug_root, hw, &dvn_fops); 554 debugfs_create_file("uvn", 0644, 555 hw->nbl_debug_root, hw, &uvn_fops); 556 debugfs_create_file("nic-statistics", 0444, 557 hw->nbl_debug_root, hw, &nic_statistics_fops); 558 debugfs_create_file("tables", 0644, 559 hw->nbl_debug_root, hw, &tables_fops); 560 } 561 562 if (adapter->num_txq) { 563 for (i = 0; i < adapter->num_txq; i++) { > 564 snprintf(buf, sizeof(buf), "txring-%d", i); 565 debugfs_create_file(buf, 0444, 566 hw->nbl_debug_root, 567 adapter->tx_rings[i], &ring_fops); 568 } 569 } 570 571 if (adapter->num_rxq) { 572 for (i = 0; i < adapter->num_rxq; i++) { 573 snprintf(buf, sizeof(buf), "rxring-%d", i); 574 debugfs_create_file(buf, 0444, 575 hw->nbl_debug_root, 576 adapter->rx_rings[i], &ring_fops); 577 } 578 } 579 580 debugfs_create_file("bar", 0444, hw->nbl_debug_root, hw, &bar_fops); 581 582 hw->debugfs_reg_bar = 0; 583 hw->debugfs_reg_offset = 0; 584 hw->debugfs_reg_length = 8; 585 debugfs_create_file("reg", 0444, hw->nbl_debug_root, hw, &reg_fops); 586 } 587 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-5.10] llc: make llc_ui_sendmsg() more robust against bonding changes
by Liu Jian 23 Mar '24

23 Mar '24

From: Eric Dumazet <edumazet(a)google.com> stable inclusion from stable-v5.10.210 commit 04f2a74b562f3a7498be0399309669f342793d8c category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I99JVI CVE: CVE-2024-26636 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… --------------------------- [ Upstream commit dad555c816a50c6a6a8a86be1f9177673918c647 ] syzbot was able to trick llc_ui_sendmsg(), allocating an skb with no headroom, but subsequently trying to push 14 bytes of Ethernet header [1] Like some others, llc_ui_sendmsg() releases the socket lock before calling sock_alloc_send_skb(). Then it acquires it again, but does not redo all the sanity checks that were performed. This fix: - Uses LL_RESERVED_SPACE() to reserve space. - Check all conditions again after socket lock is held again. - Do not account Ethernet header for mtu limitation. [1] skbuff: skb_under_panic: text:ffff800088baa334 len:1514 put:14 head:ffff0000c9c37000 data:ffff0000c9c36ff2 tail:0x5dc end:0x6c0 dev:bond0 kernel BUG at net/core/skbuff.c:193 ! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 6875 Comm: syz-executor.0 Not tainted 6.7.0-rc8-syzkaller-00101-g0802e17d9aca-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : skb_panic net/core/skbuff.c:189 [inline] pc : skb_under_panic+0x13c/0x140 net/core/skbuff.c:203 lr : skb_panic net/core/skbuff.c:189 [inline] lr : skb_under_panic+0x13c/0x140 net/core/skbuff.c:203 sp : ffff800096f97000 x29: ffff800096f97010 x28: ffff80008cc8d668 x27: dfff800000000000 x26: ffff0000cb970c90 x25: 00000000000005dc x24: ffff0000c9c36ff2 x23: ffff0000c9c37000 x22: 00000000000005ea x21: 00000000000006c0 x20: 000000000000000e x19: ffff800088baa334 x18: 1fffe000368261ce x17: ffff80008e4ed000 x16: ffff80008a8310f8 x15: 0000000000000001 x14: 1ffff00012df2d58 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000001 x10: 0000000000ff0100 x9 : e28a51f1087e8400 x8 : e28a51f1087e8400 x7 : ffff80008028f8d0 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff800082b78714 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000089 Call trace: skb_panic net/core/skbuff.c:189 [inline] skb_under_panic+0x13c/0x140 net/core/skbuff.c:203 skb_push+0xf0/0x108 net/core/skbuff.c:2451 eth_header+0x44/0x1f8 net/ethernet/eth.c:83 dev_hard_header include/linux/netdevice.h:3188 [inline] llc_mac_hdr_init+0x110/0x17c net/llc/llc_output.c:33 llc_sap_action_send_xid_c+0x170/0x344 net/llc/llc_s_ac.c:85 llc_exec_sap_trans_actions net/llc/llc_sap.c:153 [inline] llc_sap_next_state net/llc/llc_sap.c:182 [inline] llc_sap_state_process+0x1ec/0x774 net/llc/llc_sap.c:209 llc_build_and_send_xid_pkt+0x12c/0x1c0 net/llc/llc_sap.c:270 llc_ui_sendmsg+0x7bc/0xb1c net/llc/af_llc.c:997 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] sock_sendmsg+0x194/0x274 net/socket.c:767 splice_to_socket+0x7cc/0xd58 fs/splice.c:881 do_splice_from fs/splice.c:933 [inline] direct_splice_actor+0xe4/0x1c0 fs/splice.c:1142 splice_direct_to_actor+0x2a0/0x7e4 fs/splice.c:1088 do_splice_direct+0x20c/0x348 fs/splice.c:1194 do_sendfile+0x4bc/0xc70 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __arm64_sys_sendfile64+0x160/0x3b4 fs/read_write.c:1308 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Code: aa1803e6 aa1903e7 a90023f5 94792f6a (d4210000) Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-and-tested-by: syzbot+2a7024e9502df538e8ef(a)syzkaller.appspotmail.com Signed-off-by: Eric Dumazet <edumazet(a)google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu(a)amazon.com> Link: https://lore.kernel.org/r/20240118183625.4007013-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Liu Jian <liujian56(a)huawei.com> --- net/llc/af_llc.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c index 90a32864401c..dae978badd26 100644 --- a/net/llc/af_llc.c +++ b/net/llc/af_llc.c @@ -929,14 +929,15 @@ static int llc_ui_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, */ static int llc_ui_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) { + DECLARE_SOCKADDR(struct sockaddr_llc *, addr, msg->msg_name); struct sock *sk = sock->sk; struct llc_sock *llc = llc_sk(sk); - DECLARE_SOCKADDR(struct sockaddr_llc *, addr, msg->msg_name); int flags = msg->msg_flags; int noblock = flags & MSG_DONTWAIT; + int rc = -EINVAL, copied = 0, hdrlen, hh_len; struct sk_buff *skb = NULL; + struct net_device *dev; size_t size = 0; - int rc = -EINVAL, copied = 0, hdrlen; dprintk("%s: sending from %02X to %02X\n", __func__, llc->laddr.lsap, llc->daddr.lsap); @@ -956,22 +957,29 @@ static int llc_ui_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) if (rc) goto out; } - hdrlen = llc->dev->hard_header_len + llc_ui_header_len(sk, addr); + dev = llc->dev; + hh_len = LL_RESERVED_SPACE(dev); + hdrlen = llc_ui_header_len(sk, addr); size = hdrlen + len; - if (size > llc->dev->mtu) - size = llc->dev->mtu; + size = min_t(size_t, size, READ_ONCE(dev->mtu)); copied = size - hdrlen; rc = -EINVAL; if (copied < 0) goto out; release_sock(sk); - skb = sock_alloc_send_skb(sk, size, noblock, &rc); + skb = sock_alloc_send_skb(sk, hh_len + size, noblock, &rc); lock_sock(sk); if (!skb) goto out; - skb->dev = llc->dev; + if (sock_flag(sk, SOCK_ZAPPED) || + llc->dev != dev || + hdrlen != llc_ui_header_len(sk, addr) || + hh_len != LL_RESERVED_SPACE(dev) || + size > READ_ONCE(dev->mtu)) + goto out; + skb->dev = dev; skb->protocol = llc_proto_type(addr->sllc_arphrd); - skb_reserve(skb, hdrlen); + skb_reserve(skb, hh_len + hdrlen); rc = memcpy_from_msg(skb_put(skb, copied), msg, copied); if (rc) goto out; -- 2.34.1

2 1

[PATCH OLK-5.10] llc: Drop support for ETH_P_TR_802_2.
by Liu Jian 23 Mar '24

23 Mar '24

From: Kuniyuki Iwashima <kuniyu(a)amazon.com> stable inclusion from stable-v5.10.210 commit 9ccdef19cf9497c2803b005369668feb91cacdfd category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I99JSA CVE: CVE-2024-26635 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… --------------------------- [ Upstream commit e3f9bed9bee261e3347131764e42aeedf1ffea61 ] syzbot reported an uninit-value bug below. [0] llc supports ETH_P_802_2 (0x0004) and used to support ETH_P_TR_802_2 (0x0011), and syzbot abused the latter to trigger the bug. write$tun(r0, &(0x7f0000000040)={@val={0x0, 0x11}, @val, @mpls={[], @llc={@snap={0xaa, 0x1, ')', "90e5dd"}}}}, 0x16) llc_conn_handler() initialises local variables {saddr,daddr}.mac based on skb in llc_pdu_decode_sa()/llc_pdu_decode_da() and passes them to __llc_lookup(). However, the initialisation is done only when skb->protocol is htons(ETH_P_802_2), otherwise, __llc_lookup_established() and __llc_lookup_listener() will read garbage. The missing initialisation existed prior to commit 211ed865108e ("net: delete all instances of special processing for token ring"). It removed the part to kick out the token ring stuff but forgot to close the door allowing ETH_P_TR_802_2 packets to sneak into llc_rcv(). Let's remove llc_tr_packet_type and complete the deprecation. [0]: BUG: KMSAN: uninit-value in __llc_lookup_established+0xe9d/0xf90 __llc_lookup_established+0xe9d/0xf90 __llc_lookup net/llc/llc_conn.c:611 [inline] llc_conn_handler+0x4bd/0x1360 net/llc/llc_conn.c:791 llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206 __netif_receive_skb_one_core net/core/dev.c:5527 [inline] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5641 netif_receive_skb_internal net/core/dev.c:5727 [inline] netif_receive_skb+0x58/0x660 net/core/dev.c:5786 tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555 tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:2020 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x8ef/0x1490 fs/read_write.c:584 ksys_write+0x20f/0x4c0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x93/0xd0 fs/read_write.c:646 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Local variable daddr created at: llc_conn_handler+0x53/0x1360 net/llc/llc_conn.c:783 llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206 CPU: 1 PID: 5004 Comm: syz-executor994 Not tainted 6.6.0-syzkaller-14500-g1c41041124bd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Fixes: 211ed865108e ("net: delete all instances of special processing for token ring") Reported-by: syzbot+b5ad66046b913bc04c6f(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=b5ad66046b913bc04c6f Signed-off-by: Kuniyuki Iwashima <kuniyu(a)amazon.com> Reviewed-by: Eric Dumazet <edumazet(a)google.com> Link: https://lore.kernel.org/r/20240119015515.61898-1-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Liu Jian <liujian56(a)huawei.com> --- include/net/llc_pdu.h | 6 ++---- net/llc/llc_core.c | 7 ------- 2 files changed, 2 insertions(+), 11 deletions(-) diff --git a/include/net/llc_pdu.h b/include/net/llc_pdu.h index 49aa79c7b278..581cd37aa98b 100644 --- a/include/net/llc_pdu.h +++ b/include/net/llc_pdu.h @@ -262,8 +262,7 @@ static inline void llc_pdu_header_init(struct sk_buff *skb, u8 type, */ static inline void llc_pdu_decode_sa(struct sk_buff *skb, u8 *sa) { - if (skb->protocol == htons(ETH_P_802_2)) - memcpy(sa, eth_hdr(skb)->h_source, ETH_ALEN); + memcpy(sa, eth_hdr(skb)->h_source, ETH_ALEN); } /** @@ -275,8 +274,7 @@ static inline void llc_pdu_decode_sa(struct sk_buff *skb, u8 *sa) */ static inline void llc_pdu_decode_da(struct sk_buff *skb, u8 *da) { - if (skb->protocol == htons(ETH_P_802_2)) - memcpy(da, eth_hdr(skb)->h_dest, ETH_ALEN); + memcpy(da, eth_hdr(skb)->h_dest, ETH_ALEN); } /** diff --git a/net/llc/llc_core.c b/net/llc/llc_core.c index 64d4bef04e73..4900a27b5176 100644 --- a/net/llc/llc_core.c +++ b/net/llc/llc_core.c @@ -135,22 +135,15 @@ static struct packet_type llc_packet_type __read_mostly = { .func = llc_rcv, }; -static struct packet_type llc_tr_packet_type __read_mostly = { - .type = cpu_to_be16(ETH_P_TR_802_2), - .func = llc_rcv, -}; - static int __init llc_init(void) { dev_add_pack(&llc_packet_type); - dev_add_pack(&llc_tr_packet_type); return 0; } static void __exit llc_exit(void) { dev_remove_pack(&llc_packet_type); - dev_remove_pack(&llc_tr_packet_type); } module_init(llc_init); -- 2.34.1

2 1

[PATCH OLK-5.10] llc: Drop support for ETH_P_TR_802_2.
by Liu Jian 23 Mar '24

23 Mar '24

From: Kuniyuki Iwashima <kuniyu(a)amazon.com> stable inclusion from stable-v5.10.210 commit 9ccdef19cf9497c2803b005369668feb91cacdfd category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I99JSA CVE: CVE-2024-26635 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… --------------------------- [ Upstream commit e3f9bed9bee261e3347131764e42aeedf1ffea61 ] syzbot reported an uninit-value bug below. [0] llc supports ETH_P_802_2 (0x0004) and used to support ETH_P_TR_802_2 (0x0011), and syzbot abused the latter to trigger the bug. write$tun(r0, &(0x7f0000000040)={@val={0x0, 0x11}, @val, @mpls={[], @llc={@snap={0xaa, 0x1, ')', "90e5dd"}}}}, 0x16) llc_conn_handler() initialises local variables {saddr,daddr}.mac based on skb in llc_pdu_decode_sa()/llc_pdu_decode_da() and passes them to __llc_lookup(). However, the initialisation is done only when skb->protocol is htons(ETH_P_802_2), otherwise, __llc_lookup_established() and __llc_lookup_listener() will read garbage. The missing initialisation existed prior to commit 211ed865108e ("net: delete all instances of special processing for token ring"). It removed the part to kick out the token ring stuff but forgot to close the door allowing ETH_P_TR_802_2 packets to sneak into llc_rcv(). Let's remove llc_tr_packet_type and complete the deprecation. [0]: BUG: KMSAN: uninit-value in __llc_lookup_established+0xe9d/0xf90 __llc_lookup_established+0xe9d/0xf90 __llc_lookup net/llc/llc_conn.c:611 [inline] llc_conn_handler+0x4bd/0x1360 net/llc/llc_conn.c:791 llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206 __netif_receive_skb_one_core net/core/dev.c:5527 [inline] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5641 netif_receive_skb_internal net/core/dev.c:5727 [inline] netif_receive_skb+0x58/0x660 net/core/dev.c:5786 tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555 tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:2020 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x8ef/0x1490 fs/read_write.c:584 ksys_write+0x20f/0x4c0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x93/0xd0 fs/read_write.c:646 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Local variable daddr created at: llc_conn_handler+0x53/0x1360 net/llc/llc_conn.c:783 llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206 CPU: 1 PID: 5004 Comm: syz-executor994 Not tainted 6.6.0-syzkaller-14500-g1c41041124bd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Fixes: 211ed865108e ("net: delete all instances of special processing for token ring") Reported-by: syzbot+b5ad66046b913bc04c6f(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=b5ad66046b913bc04c6f Signed-off-by: Kuniyuki Iwashima <kuniyu(a)amazon.com> Reviewed-by: Eric Dumazet <edumazet(a)google.com> Link: https://lore.kernel.org/r/20240119015515.61898-1-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Liu Jian <liujian56(a)huawei.com> --- include/net/llc_pdu.h | 6 ++---- net/llc/llc_core.c | 7 ------- 2 files changed, 2 insertions(+), 11 deletions(-) diff --git a/include/net/llc_pdu.h b/include/net/llc_pdu.h index 49aa79c7b278..581cd37aa98b 100644 --- a/include/net/llc_pdu.h +++ b/include/net/llc_pdu.h @@ -262,8 +262,7 @@ static inline void llc_pdu_header_init(struct sk_buff *skb, u8 type, */ static inline void llc_pdu_decode_sa(struct sk_buff *skb, u8 *sa) { - if (skb->protocol == htons(ETH_P_802_2)) - memcpy(sa, eth_hdr(skb)->h_source, ETH_ALEN); + memcpy(sa, eth_hdr(skb)->h_source, ETH_ALEN); } /** @@ -275,8 +274,7 @@ static inline void llc_pdu_decode_sa(struct sk_buff *skb, u8 *sa) */ static inline void llc_pdu_decode_da(struct sk_buff *skb, u8 *da) { - if (skb->protocol == htons(ETH_P_802_2)) - memcpy(da, eth_hdr(skb)->h_dest, ETH_ALEN); + memcpy(da, eth_hdr(skb)->h_dest, ETH_ALEN); } /** diff --git a/net/llc/llc_core.c b/net/llc/llc_core.c index 64d4bef04e73..4900a27b5176 100644 --- a/net/llc/llc_core.c +++ b/net/llc/llc_core.c @@ -135,22 +135,15 @@ static struct packet_type llc_packet_type __read_mostly = { .func = llc_rcv, }; -static struct packet_type llc_tr_packet_type __read_mostly = { - .type = cpu_to_be16(ETH_P_TR_802_2), - .func = llc_rcv, -}; - static int __init llc_init(void) { dev_add_pack(&llc_packet_type); - dev_add_pack(&llc_tr_packet_type); return 0; } static void __exit llc_exit(void) { dev_remove_pack(&llc_packet_type); - dev_remove_pack(&llc_tr_packet_type); } module_init(llc_init); -- 2.34.1

2 3

[PATCH openEuler-1.0-LTS] llc: Drop support for ETH_P_TR_802_2.
by Liu Jian 23 Mar '24

23 Mar '24

From: Kuniyuki Iwashima <kuniyu(a)amazon.com> stable inclusion from stable-v4.19.307 commit 165ad1e22779685c3ed3dd349c6c4c632309cc62 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I99JSA CVE: CVE-2024-26635 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… --------------------------- [ Upstream commit e3f9bed9bee261e3347131764e42aeedf1ffea61 ] syzbot reported an uninit-value bug below. [0] llc supports ETH_P_802_2 (0x0004) and used to support ETH_P_TR_802_2 (0x0011), and syzbot abused the latter to trigger the bug. write$tun(r0, &(0x7f0000000040)={@val={0x0, 0x11}, @val, @mpls={[], @llc={@snap={0xaa, 0x1, ')', "90e5dd"}}}}, 0x16) llc_conn_handler() initialises local variables {saddr,daddr}.mac based on skb in llc_pdu_decode_sa()/llc_pdu_decode_da() and passes them to __llc_lookup(). However, the initialisation is done only when skb->protocol is htons(ETH_P_802_2), otherwise, __llc_lookup_established() and __llc_lookup_listener() will read garbage. The missing initialisation existed prior to commit 211ed865108e ("net: delete all instances of special processing for token ring"). It removed the part to kick out the token ring stuff but forgot to close the door allowing ETH_P_TR_802_2 packets to sneak into llc_rcv(). Let's remove llc_tr_packet_type and complete the deprecation. [0]: BUG: KMSAN: uninit-value in __llc_lookup_established+0xe9d/0xf90 __llc_lookup_established+0xe9d/0xf90 __llc_lookup net/llc/llc_conn.c:611 [inline] llc_conn_handler+0x4bd/0x1360 net/llc/llc_conn.c:791 llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206 __netif_receive_skb_one_core net/core/dev.c:5527 [inline] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5641 netif_receive_skb_internal net/core/dev.c:5727 [inline] netif_receive_skb+0x58/0x660 net/core/dev.c:5786 tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555 tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:2020 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x8ef/0x1490 fs/read_write.c:584 ksys_write+0x20f/0x4c0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x93/0xd0 fs/read_write.c:646 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Local variable daddr created at: llc_conn_handler+0x53/0x1360 net/llc/llc_conn.c:783 llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206 CPU: 1 PID: 5004 Comm: syz-executor994 Not tainted 6.6.0-syzkaller-14500-g1c41041124bd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Fixes: 211ed865108e ("net: delete all instances of special processing for token ring") Reported-by: syzbot+b5ad66046b913bc04c6f(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=b5ad66046b913bc04c6f Signed-off-by: Kuniyuki Iwashima <kuniyu(a)amazon.com> Reviewed-by: Eric Dumazet <edumazet(a)google.com> Link: https://lore.kernel.org/r/20240119015515.61898-1-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Liu Jian <liujian56(a)huawei.com> --- include/net/llc_pdu.h | 6 ++---- net/llc/llc_core.c | 7 ------- 2 files changed, 2 insertions(+), 11 deletions(-) diff --git a/include/net/llc_pdu.h b/include/net/llc_pdu.h index c0f0a13ed818..663351ca00e1 100644 --- a/include/net/llc_pdu.h +++ b/include/net/llc_pdu.h @@ -250,8 +250,7 @@ static inline void llc_pdu_header_init(struct sk_buff *skb, u8 type, */ static inline void llc_pdu_decode_sa(struct sk_buff *skb, u8 *sa) { - if (skb->protocol == htons(ETH_P_802_2)) - memcpy(sa, eth_hdr(skb)->h_source, ETH_ALEN); + memcpy(sa, eth_hdr(skb)->h_source, ETH_ALEN); } /** @@ -263,8 +262,7 @@ static inline void llc_pdu_decode_sa(struct sk_buff *skb, u8 *sa) */ static inline void llc_pdu_decode_da(struct sk_buff *skb, u8 *da) { - if (skb->protocol == htons(ETH_P_802_2)) - memcpy(da, eth_hdr(skb)->h_dest, ETH_ALEN); + memcpy(da, eth_hdr(skb)->h_dest, ETH_ALEN); } /** diff --git a/net/llc/llc_core.c b/net/llc/llc_core.c index 64d4bef04e73..4900a27b5176 100644 --- a/net/llc/llc_core.c +++ b/net/llc/llc_core.c @@ -135,22 +135,15 @@ static struct packet_type llc_packet_type __read_mostly = { .func = llc_rcv, }; -static struct packet_type llc_tr_packet_type __read_mostly = { - .type = cpu_to_be16(ETH_P_TR_802_2), - .func = llc_rcv, -}; - static int __init llc_init(void) { dev_add_pack(&llc_packet_type); - dev_add_pack(&llc_tr_packet_type); return 0; } static void __exit llc_exit(void) { dev_remove_pack(&llc_packet_type); - dev_remove_pack(&llc_tr_packet_type); } module_init(llc_init); -- 2.34.1

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[openeuler:OLK-6.6 3947/6857] drivers/crypto/montage/tsse/tsse_ipc.c:18: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
by kernel test robot 23 Mar '24

23 Mar '24

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 1b4212c630731d88b07d5b6e28ecaff1a76d3839 commit: 7795623241fe9eb57352a09b27d06b5d4ff07071 [3947/6857] add firmware update function for Mont-TSSE config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240323/202403230839.j7ODqH5Y-lkp@…) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240323/202403230839.j7ODqH5Y-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/202403230839.j7ODqH5Y-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/crypto/montage/tsse/tsse_ipc.c:18: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Create ipc_msg and read message from BAR. drivers/crypto/montage/tsse/tsse_ipc.c:83: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Enable main2host interrupt, cleanup interrupt set value in host2main and main2host. -- >> drivers/crypto/montage/tsse/tsse_fw_service.c:55: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Get version information from firmware drivers/crypto/montage/tsse/tsse_fw_service.c:106: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Firmware service to handle IPC message from mainCPU. drivers/crypto/montage/tsse/tsse_fw_service.c:155: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Load firmware from /lib/firmware -- >> drivers/crypto/montage/tsse/tsse_dev_drv.c:118: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * This function will be called when user writes string to /sys/bus/pci/devices/.../tsse_image_load. vim +18 drivers/crypto/montage/tsse/tsse_ipc.c 16 17 /** > 18 * Create ipc_msg and read message from BAR. 19 * Return the pointer to ipc_msg, the caller is responsible for free it. 20 */ 21 static struct ipc_msg *get_msginf(void __iomem *d2h) 22 { 23 uint32_t u_len = 0; 24 struct ipc_msg *msg = NULL; 25 26 uint8_t *device_msg_data = NULL; 27 struct ipc_header *ipc_info = (struct ipc_header *)d2h; 28 29 // The memory layout in d2h should at least contains: 30 // ipc_header, msg_info and fw_load (message body) 31 if (ipc_info->i_len < sizeof(struct ipc_header) + 32 sizeof(struct msg_info) + sizeof(struct fw_load)) { 33 pr_info("%s(): msg format error\n", __func__); 34 return NULL; 35 } 36 u_len = ipc_info->i_len - sizeof(struct ipc_header); 37 msg = (struct ipc_msg *)(kzalloc(sizeof(struct ipc_msg) + u_len, 38 GFP_ATOMIC)); 39 if (!msg) { 40 pr_info("%s(): ipc_msg kzalloc failed\n", __func__); 41 return NULL; 42 } 43 44 msg->header.inst_id = ipc_info->inst_id; 45 msg->header.tgid = ipc_info->tgid; 46 msg->header.i_len = ipc_info->i_len; 47 48 device_msg_data = (uint8_t *)(d2h + sizeof(struct ipc_header)); 49 memcpy_fromio((uint8_t *)msg->i_data, device_msg_data, u_len); 50 51 return msg; 52 } 53 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10 24372/30000] drivers/gpu/drm/inspur/inspur_drm_drv.c:30:13: warning: no previous prototype for 'inspur_drm_interrupt'
by kernel test robot 23 Mar '24

23 Mar '24

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 459341c4b4845b283c7a884e6a0dc4bd8cdb89e6 commit: b9d65551a3adfa87a7c5d33391187ee60a1b501d [24372/30000] drm: add inspur drm driver support config: x86_64-randconfig-006-20240323 (https://download.01.org/0day-ci/archive/20240323/202403230614.AetkQYPg-lkp@…) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240323/202403230614.AetkQYPg-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/202403230614.AetkQYPg-lkp@intel.com/ All error/warnings (new ones prefixed by >>): ld: mm/vmscan.o: in function `kernel_swap_check': >> mm/vmscan.c:3481: undefined reference to `kernel_swap_enabled' >> ld: mm/vmscan.c:3481: undefined reference to `kernel_swap_enabled' >> ld: mm/vmscan.c:3481: undefined reference to `kernel_swap_enabled' ld: drivers/video/fbdev/ls2k500sfb.o: in function `ls2k500sfb_events_fn': >> drivers/video/fbdev/ls2k500sfb.c:246: undefined reference to `fg_console' >> ld: drivers/video/fbdev/ls2k500sfb.c:246: undefined reference to `fg_console' >> ld: drivers/video/fbdev/ls2k500sfb.c:246: undefined reference to `fg_console' -- >> drivers/gpu/drm/inspur/inspur_drm_drv.c:30:13: warning: no previous prototype for 'inspur_drm_interrupt' [-Wmissing-prototypes] 30 | irqreturn_t inspur_drm_interrupt(int irq, void *arg) | ^~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/inspur/inspur_drm_drv.c: In function 'inspur_pci_probe': drivers/gpu/drm/inspur/inspur_drm_drv.c:379:36: warning: unused variable 'priv' [-Wunused-variable] 379 | struct inspur_drm_private *priv; | ^~~~ vim +/inspur_drm_interrupt +30 drivers/gpu/drm/inspur/inspur_drm_drv.c 27 28 29 DEFINE_DRM_GEM_FOPS(inspur_fops); > 30 irqreturn_t inspur_drm_interrupt(int irq, void *arg) 31 { 32 struct drm_device *dev = (struct drm_device *)arg; 33 struct inspur_drm_private *priv = 34 (struct inspur_drm_private *)dev->dev_private; 35 u32 status; 36 37 status = readl(priv->mmio + INSPUR_RAW_INTERRUPT); 38 39 if (status & INSPUR_RAW_INTERRUPT_VBLANK(1)) { 40 writel(INSPUR_RAW_INTERRUPT_VBLANK(1), 41 priv->mmio + INSPUR_RAW_INTERRUPT); 42 drm_handle_vblank(dev, 0); 43 } 44 45 return IRQ_HANDLED; 46 } 47 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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