November 2024 - Kernel - mailweb.openeuler.org

openEuler Kernel SIG双周例会
by openEuler conference 06 Nov '24

06 Nov '24

您好！ Kernel 邀请您参加 2024-11-08 14:00 召开的WeLink会议(自动录制) 会议主题：openEuler Kernel SIG双周例会会议内容： 1. 进展update 2. 征集中（可回复本邮件申请，也可直接填写至会议纪要看板）会议链接：https://meeting.huaweicloud.com:36443/#/j/983782327 会议纪要：https://etherpad.openeuler.org/p/Kernel-meetings 更多资讯尽在：https://www.openeuler.org/zh/ Hello! Kernel invites you to attend the WeLink conference(auto recording) will be held at 2024-11-08 14:00, The subject of the conference is openEuler Kernel SIG双周例会, Summary: 1. 进展update 2. 征集中（可回复本邮件申请，也可直接填写至会议纪要看板） You can join the meeting at https://meeting.huaweicloud.com:36443/#/j/983782327. Add topics at https://etherpad.openeuler.org/p/Kernel-meetings. More information: https://www.openeuler.org/en/

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[PATCH OLK-6.6] NFSD: Mark filecache "down" if init fails
by Li Lingfeng 06 Nov '24

06 Nov '24

From: Chuck Lever <chuck.lever(a)oracle.com> stable inclusion from stable-v6.6.57 commit 4ab072325c621e0e4fadff991c7a00379a16a037 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB22IQ Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit dc0d0f885aa422f621bc1c2124133eff566b0bc8 ] NeilBrown says: > The handling of NFSD_FILE_CACHE_UP is strange. nfsd_file_cache_init() > sets it, but doesn't clear it on failure. So if nfsd_file_cache_init() > fails for some reason, nfsd_file_cache_shutdown() would still try to > clean up if it was called. Reported-by: NeilBrown <neilb(a)suse.de> Fixes: c7b824c3d06c ("NFSD: Replace the "init once" mechanism") Signed-off-by: Chuck Lever <chuck.lever(a)oracle.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- fs/nfsd/filecache.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c index 5c9f8f8404d5..6f2bcbfde45e 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -718,7 +718,7 @@ nfsd_file_cache_init(void) ret = rhltable_init(&nfsd_file_rhltable, &nfsd_file_rhash_params); if (ret) - return ret; + goto out; ret = -ENOMEM; nfsd_filecache_wq = alloc_workqueue("nfsd_filecache", 0, 0); @@ -770,6 +770,8 @@ nfsd_file_cache_init(void) INIT_DELAYED_WORK(&nfsd_filecache_laundrette, nfsd_file_gc_worker); out: + if (ret) + clear_bit(NFSD_FILE_CACHE_UP, &nfsd_file_flags); return ret; out_notifier: lease_unregister_notifier(&nfsd_file_lease_notifier); -- 2.31.1

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[PATCH openEuler-1.0-LTS] nfs: fix rpc_task use-after-free when open and close different files concurrently
by Li Lingfeng 06 Nov '24

06 Nov '24

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB20ED CVE: NA -------------------------------- Commit b5e9ee1ed8bb("[Huawei] NFSv4: release seqid when open failed for nfs4.0") describes a scenario where a file system is forcibly unmounted when different files are opened concurrently. There is another similar issue where performing concurrent operations of opening file B, closing file A, and unmounting while file A is open which can trigger a UAF of rpc_task. T1: OPEN fileB T2: CLOSE fileA nfs4_do_open ... .rpc_call_prepare nfs_wait_on_sequence // insert to sequence list(T1) // This is the first entry, // and continue. nfs4_do_close .rpc_call_prepare nfs_wait_on_sequence // insert to sequence list(T2) // This is the second entry, // and wait. [T3 wake up T2 here] ... rpc_put_task // finish rpc_task and free it .rpc_call_done nfs_release_seqid list_first_entry // get T1 from list rpc_wake_up_queued_task // wake up T1, UAF _nfs4_open_and_get_state _nfs4_open_and_get_state _nfs4_opendata_to_nfs4_state nfs_release_seqid // remove T1 from list T3: UMOUNT nfs_umount_begin rpc_killall_tasks rpc_signal_task // get T2 from clnt->cl_tasks rpc_wake_up_queued_task_set_status rpc_wake_up_task_queue_set_status_locked rpc_wake_up_task_on_wq_queue_action_locked __rpc_do_wake_up_task_on_wq rpc_make_runnable wake_up_bit // wake up T2 Although the rpc_task corresponding to T1 has been freed, its seqid has not been removed from the sequence list. Additionally, even though T2 is the last task in the list, the current logic of nfs_release_seqid allows T2 to access tasks inserted before it, which can trigger UAF. Fix it by using nfs_release_seqid_inorder instead of nfs_release_seqid in nfs4_close_done. Fixes: 72211dbe727f ("NFSv4: Release the sequence id before restarting a CLOSE rpc call") Link: https://lore.kernel.org/all/b9924cd2-253a-6c44-3331-56310f13df0b@huawei.com/ Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- fs/nfs/nfs4proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index b19a738dd2e1..94f73294b8d6 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3403,7 +3403,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data) res_stateid, calldata->arg.fmode); out_release: task->tk_status = 0; - nfs_release_seqid(calldata->arg.seqid); + nfs_release_seqid_inorder(calldata->arg.seqid); nfs_refresh_inode(calldata->inode, &calldata->fattr); dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); return; -- 2.31.1

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[PATCH OLK-5.10 0/2] Fix UAF of rpc_task
by Li Lingfeng 06 Nov '24

06 Nov '24

Li Lingfeng (1): nfs: fix rpc_task use-after-free when open and close different files concurrently Yang Erkun (1): NFSv4: release seqid when open failed for nfs4.0 fs/nfs/nfs4_fs.h | 1 + fs/nfs/nfs4proc.c | 4 +++- fs/nfs/nfs4state.c | 18 ++++++++++++++++++ 3 files changed, 22 insertions(+), 1 deletion(-) -- 2.31.1

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[PATCH OLK-6.6 0/2] Fix UAF of rpc_task
by Li Lingfeng 06 Nov '24

06 Nov '24

Li Lingfeng (1): nfs: fix rpc_task use-after-free when open and close different files concurrently Yang Erkun (1): NFSv4: release seqid when open failed for nfs4.0 fs/nfs/nfs4_fs.h | 1 + fs/nfs/nfs4proc.c | 4 +++- fs/nfs/nfs4state.c | 18 ++++++++++++++++++ 3 files changed, 22 insertions(+), 1 deletion(-) -- 2.31.1

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[openeuler:openEuler-1.0-LTS 1225/1225] drivers/hwtracing/intel_th/msu-sink.o: warning: objtool: missing symbol for section .init.text
by kernel test robot 06 Nov '24

06 Nov '24

Hi Alexander, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: e33ed48bc600febcdca9e71e43cf224934dadc4f commit: 4d516770f81434cde260d33430626e3880b9902e [1225/1225] intel_th: msu-sink: An example msu buffer "sink" config: x86_64-buildonly-randconfig-002-20241028 (https://download.01.org/0day-ci/archive/20241106/202411060820.ye1y82tJ-lkp@…) compiler: clang version 19.1.2 (https://github.com/llvm/llvm-project 7ba7d8e2f7b6445b60679da826210cdde29eaf8b) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241106/202411060820.ye1y82tJ-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/202411060820.ye1y82tJ-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/hwtracing/intel_th/msu-sink.o: warning: objtool: missing symbol for section .init.text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 1231/1231] drivers/spi/spi-uniphier.o: warning: objtool: missing symbol for section .init.text
by kernel test robot 06 Nov '24

06 Nov '24

Hi Mark, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: e33ed48bc600febcdca9e71e43cf224934dadc4f commit: c1acb21b32a3bb601453764c9eac9fc8fbb3a81d [1231/1231] Merge branch 'spi-4.19' into spi-next config: x86_64-buildonly-randconfig-002-20241029 (https://download.01.org/0day-ci/archive/20241106/202411060705.6jumqar7-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/20241106/202411060705.6jumqar7-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/202411060705.6jumqar7-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/spi/spi-uniphier.c:12: include/linux/module.h:138:14: warning: 'cleanup_module' specifies less restrictive attribute than its target 'uniphier_spi_driver_exit': 'cold' [-Wmissing-attributes] 138 | void cleanup_module(void) __attribute__((alias(#exitfn))); | ^~~~~~~~~~~~~~ include/linux/device.h:1558:1: note: in expansion of macro 'module_exit' 1558 | module_exit(__driver##_exit); | ^~~~~~~~~~~ include/linux/platform_device.h:228:9: note: in expansion of macro 'module_driver' 228 | module_driver(__platform_driver, platform_driver_register, \ | ^~~~~~~~~~~~~ drivers/spi/spi-uniphier.c:518:1: note: in expansion of macro 'module_platform_driver' 518 | module_platform_driver(uniphier_spi_driver); | ^~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/platform_device.h:14, from drivers/spi/spi-uniphier.c:13: drivers/spi/spi-uniphier.c:518:24: note: 'cleanup_module' target declared here 518 | module_platform_driver(uniphier_spi_driver); | ^~~~~~~~~~~~~~~~~~~ include/linux/device.h:1554:20: note: in definition of macro 'module_driver' 1554 | static void __exit __driver##_exit(void) \ | ^~~~~~~~ drivers/spi/spi-uniphier.c:518:1: note: in expansion of macro 'module_platform_driver' 518 | module_platform_driver(uniphier_spi_driver); | ^~~~~~~~~~~~~~~~~~~~~~ include/linux/module.h:132:13: warning: 'init_module' specifies less restrictive attribute than its target 'uniphier_spi_driver_init': 'cold' [-Wmissing-attributes] 132 | int init_module(void) __attribute__((alias(#initfn))); | ^~~~~~~~~~~ include/linux/device.h:1553:1: note: in expansion of macro 'module_init' 1553 | module_init(__driver##_init); \ | ^~~~~~~~~~~ include/linux/platform_device.h:228:9: note: in expansion of macro 'module_driver' 228 | module_driver(__platform_driver, platform_driver_register, \ | ^~~~~~~~~~~~~ drivers/spi/spi-uniphier.c:518:1: note: in expansion of macro 'module_platform_driver' 518 | module_platform_driver(uniphier_spi_driver); | ^~~~~~~~~~~~~~~~~~~~~~ drivers/spi/spi-uniphier.c:518:24: note: 'init_module' target declared here 518 | module_platform_driver(uniphier_spi_driver); | ^~~~~~~~~~~~~~~~~~~ include/linux/device.h:1549:19: note: in definition of macro 'module_driver' 1549 | static int __init __driver##_init(void) \ | ^~~~~~~~ drivers/spi/spi-uniphier.c:518:1: note: in expansion of macro 'module_platform_driver' 518 | module_platform_driver(uniphier_spi_driver); | ^~~~~~~~~~~~~~~~~~~~~~ >> drivers/spi/spi-uniphier.o: warning: objtool: missing symbol for section .init.text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 1218/1218] drivers/media/usb/dvb-usb-v2/anysee.o: warning: objtool: missing symbol for section .init.text
by kernel test robot 06 Nov '24

06 Nov '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: e33ed48bc600febcdca9e71e43cf224934dadc4f commit: 56bc1719652e7a937bc9856f76f0c0fbf8ce1b23 [1218/1218] objtool: Support GCC 9 cold subfunction naming scheme config: x86_64-buildonly-randconfig-006-20241024 (https://download.01.org/0day-ci/archive/20241106/202411060729.yZ0sshJi-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/20241106/202411060729.yZ0sshJi-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/202411060729.yZ0sshJi-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/media/usb/dvb-usb-v2/anysee.o: warning: objtool: missing symbol for section .init.text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 1219/1219] drivers/crypto/hisilicon/sec/sec_drv.o: warning: objtool: missing symbol for section .init.text
by kernel test robot 06 Nov '24

06 Nov '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: e33ed48bc600febcdca9e71e43cf224934dadc4f commit: 915e4e8413dacc086efcef4de04fdfdca57e8b1c [1219/1219] crypto: hisilicon - SEC security accelerator driver config: x86_64-buildonly-randconfig-001-20241025 (https://download.01.org/0day-ci/archive/20241106/202411060503.rYM2XmVn-lkp@…) compiler: clang version 19.1.2 (https://github.com/llvm/llvm-project 7ba7d8e2f7b6445b60679da826210cdde29eaf8b) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241106/202411060503.rYM2XmVn-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/202411060503.rYM2XmVn-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/crypto/hisilicon/sec/sec_drv.c:843: warning: Function parameter or member 'queue' not described in 'sec_queue_empty' >> drivers/crypto/hisilicon/sec/sec_drv.o: warning: objtool: missing symbol for section .init.text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 1225/1225] kernel/kprobes.o: warning: objtool: register_kprobe()+0x6ee: unreachable instruction
by kernel test robot 06 Nov '24

06 Nov '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: e33ed48bc600febcdca9e71e43cf224934dadc4f commit: 388c9a84a807812e7226e0e1ca606563e14a7f5a [1225/1225] kprobes: Warn if the kprobe is reregistered config: x86_64-buildonly-randconfig-002-20241028 (https://download.01.org/0day-ci/archive/20241106/202411060227.oM4HzgsK-lkp@…) compiler: clang version 19.1.2 (https://github.com/llvm/llvm-project 7ba7d8e2f7b6445b60679da826210cdde29eaf8b) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241106/202411060227.oM4HzgsK-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/202411060227.oM4HzgsK-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/kprobes.c:120:14: warning: no previous prototype for function 'alloc_insn_page' [-Wmissing-prototypes] 120 | void __weak *alloc_insn_page(void) | ^ kernel/kprobes.c:120:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 120 | void __weak *alloc_insn_page(void) | ^ | static kernel/kprobes.c:125:13: warning: no previous prototype for function 'free_insn_page' [-Wmissing-prototypes] 125 | void __weak free_insn_page(void *page) | ^ kernel/kprobes.c:125:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 125 | void __weak free_insn_page(void *page) | ^ | static 2 warnings generated. kernel/kprobes.c:145: warning: Function parameter or member 'c' not described in '__get_insn_slot' >> kernel/kprobes.o: warning: objtool: register_kprobe()+0x6ee: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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