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Message-ID: <66fcf5a0.050a0220.f28ec.04f9.GAE@google.com> Date: Wed, 02 Oct 2024 00:26:24 -0700 From: syzbot <syzbot+91ae49e1c1a2634d20c0@...kaller.appspotmail.com> To: dmitry.kasatkin@...il.com, eric.snowberg@...cle.com, jmorris@...ei.org, linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org, paul@...l-moore.com, roberto.sassu@...wei.com, serge@...lyn.com, syzkaller-bugs@...glegroups.com, zohar@...ux.ibm.com Subject: [syzbot] [integrity?] [lsm?] KMSAN: uninit-value in ima_add_template_entry (2) Hello, syzbot found the following issue on: HEAD commit: ad46e8f95e93 Merge tag 'pm-6.12-rc1-2' of git://git.kernel.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1177d507980000 kernel config: https://syzkaller.appspot.com/x/.config?x=85d8f50d88ddf2a dashboard link: https://syzkaller.appspot.com/bug?extid=91ae49e1c1a2634d20c0 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=106026a9980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/265feec46ffa/disk-ad46e8f9.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d0f41ea693d3/vmlinux-ad46e8f9.xz kernel image: https://storage.googleapis.com/syzbot-assets/45082d33d192/bzImage-ad46e8f9.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/5b5b4e4b4ff9/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+91ae49e1c1a2634d20c0@...kaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in ima_add_template_entry+0x52b/0x880 security/integrity/ima/ima_queue.c:172 ima_add_template_entry+0x52b/0x880 security/integrity/ima/ima_queue.c:172 ima_store_template security/integrity/ima/ima_api.c:122 [inline] ima_store_measurement+0x36b/0x8d0 security/integrity/ima/ima_api.c:383 process_measurement+0x2c11/0x3f30 security/integrity/ima/ima_main.c:380 ima_file_check+0xb4/0x100 security/integrity/ima/ima_main.c:572 security_file_post_open+0xc6/0x540 security/security.c:3127 do_open fs/namei.c:3776 [inline] path_openat+0x58cc/0x6200 fs/namei.c:3933 do_filp_open+0x20e/0x590 fs/namei.c:3960 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_open fs/open.c:1438 [inline] __se_sys_open fs/open.c:1434 [inline] __x64_sys_open+0x275/0x2d0 fs/open.c:1434 x64_sys_call+0x15a2/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:3 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f <Zero or more stacks not recorded to save memory> Uninit was stored to memory at: sha256_transform lib/crypto/sha256.c:117 [inline] sha256_transform_blocks+0x2dbf/0x2e90 lib/crypto/sha256.c:127 lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline] sha256_update+0x2ff/0x340 lib/crypto/sha256.c:136 crypto_sha256_update+0x37/0x60 crypto/sha256_generic.c:39 crypto_shash_update+0x79/0xa0 crypto/shash.c:52 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:491 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] ima_calc_file_hash+0x1804/0x3c90 security/integrity/ima/ima_crypto.c:568 ima_collect_measurement+0x464/0xd20 security/integrity/ima/ima_api.c:293 process_measurement+0x2948/0x3f30 security/integrity/ima/ima_main.c:372 ima_file_check+0xb4/0x100 security/integrity/ima/ima_main.c:572 security_file_post_open+0xc6/0x540 security/security.c:3127 do_open fs/namei.c:3776 [inline] path_openat+0x58cc/0x6200 fs/namei.c:3933 do_filp_open+0x20e/0x590 fs/namei.c:3960 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_open fs/open.c:1438 [inline] __se_sys_open fs/open.c:1434 [inline] __x64_sys_open+0x275/0x2d0 fs/open.c:1434 x64_sys_call+0x15a2/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:3 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: sha256_transform lib/crypto/sha256.c:117 [inline] sha256_transform_blocks+0x2dbf/0x2e90 lib/crypto/sha256.c:127 lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline] sha256_update+0x2ff/0x340 lib/crypto/sha256.c:136 crypto_sha256_update+0x37/0x60 crypto/sha256_generic.c:39 crypto_shash_update+0x79/0xa0 crypto/shash.c:52 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:491 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] ima_calc_file_hash+0x1804/0x3c90 security/integrity/ima/ima_crypto.c:568 ima_collect_measurement+0x464/0xd20 security/integrity/ima/ima_api.c:293 process_measurement+0x2948/0x3f30 security/integrity/ima/ima_main.c:372 ima_file_check+0xb4/0x100 security/integrity/ima/ima_main.c:572 security_file_post_open+0xc6/0x540 security/security.c:3127 do_open fs/namei.c:3776 [inline] path_openat+0x58cc/0x6200 fs/namei.c:3933 do_filp_open+0x20e/0x590 fs/namei.c:3960 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_open fs/open.c:1438 [inline] __se_sys_open fs/open.c:1434 [inline] __x64_sys_open+0x275/0x2d0 fs/open.c:1434 x64_sys_call+0x15a2/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:3 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: BLEND_OP lib/crypto/sha256.c:61 [inline] sha256_transform lib/crypto/sha256.c:91 [inline] sha256_transform_blocks+0xf33/0x2e90 lib/crypto/sha256.c:127 lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline] sha256_update+0x2ff/0x340 lib/crypto/sha256.c:136 crypto_sha256_update+0x37/0x60 crypto/sha256_generic.c:39 crypto_shash_update+0x79/0xa0 crypto/shash.c:52 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:491 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] ima_calc_file_hash+0x1804/0x3c90 security/integrity/ima/ima_crypto.c:568 ima_collect_measurement+0x464/0xd20 security/integrity/ima/ima_api.c:293 process_measurement+0x2948/0x3f30 security/integrity/ima/ima_main.c:372 ima_file_check+0xb4/0x100 security/integrity/ima/ima_main.c:572 security_file_post_open+0xc6/0x540 security/security.c:3127 do_open fs/namei.c:3776 [inline] path_openat+0x58cc/0x6200 fs/namei.c:3933 do_filp_open+0x20e/0x590 fs/namei.c:3960 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_open fs/open.c:1438 [inline] __se_sys_open fs/open.c:1434 [inline] __x64_sys_open+0x275/0x2d0 fs/open.c:1434 x64_sys_call+0x15a2/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:3 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: BLEND_OP lib/crypto/sha256.c:61 [inline] sha256_transform lib/crypto/sha256.c:92 [inline] sha256_transform_blocks+0xf7d/0x2e90 lib/crypto/sha256.c:127 lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline] sha256_update+0x2ff/0x340 lib/crypto/sha256.c:136 crypto_sha256_update+0x37/0x60 crypto/sha256_generic.c:39 crypto_shash_update+0x79/0xa0 crypto/shash.c:52 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:491 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] ima_calc_file_hash+0x1804/0x3c90 security/integrity/ima/ima_crypto.c:568 ima_collect_measurement+0x464/0xd20 security/integrity/ima/ima_api.c:293 process_measurement+0x2948/0x3f30 security/integrity/ima/ima_main.c:372 ima_file_check+0xb4/0x100 security/integrity/ima/ima_main.c:572 security_file_post_open+0xc6/0x540 security/security.c:3127 do_open fs/namei.c:3776 [inline] path_openat+0x58cc/0x6200 fs/namei.c:3933 do_filp_open+0x20e/0x590 fs/namei.c:3960 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_open fs/open.c:1438 [inline] __se_sys_open fs/open.c:1434 [inline] __x64_sys_open+0x275/0x2d0 fs/open.c:1434 x64_sys_call+0x15a2/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:3 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: BLEND_OP lib/crypto/sha256.c:61 [inline] sha256_transform lib/crypto/sha256.c:93 [inline] sha256_transform_blocks+0xfb5/0x2e90 lib/crypto/sha256.c:127 lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline] sha256_update+0x2ff/0x340 lib/crypto/sha256.c:136 crypto_sha256_update+0x37/0x60 crypto/sha256_generic.c:39 crypto_shash_update+0x79/0xa0 crypto/shash.c:52 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:491 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] ima_calc_file_hash+0x1804/0x3c90 security/integrity/ima/ima_crypto.c:568 ima_collect_measurement+0x464/0xd20 security/integrity/ima/ima_api.c:293 process_measurement+0x2948/0x3f30 security/integrity/ima/ima_main.c:372 ima_file_check+0xb4/0x100 security/integrity/ima/ima_main.c:572 security_file_post_open+0xc6/0x540 security/security.c:3127 do_open fs/namei.c:3776 [inline] path_openat+0x58cc/0x6200 fs/namei.c:3933 do_filp_open+0x20e/0x590 fs/namei.c:3960 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_open fs/open.c:1438 [inline] __se_sys_open fs/open.c:1434 [inline] __x64_sys_open+0x275/0x2d0 fs/open.c:1434 x64_sys_call+0x15a2/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:3 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: LOAD_OP lib/crypto/sha256.c:56 [inline] sha256_transform lib/crypto/sha256.c:82 [inline] sha256_transform_blocks+0x2c35/0x2e90 lib/crypto/sha256.c:127 lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline] sha256_update+0x2ff/0x340 lib/crypto/sha256.c:136 crypto_sha256_update+0x37/0x60 crypto/sha256_generic.c:39 crypto_shash_update+0x79/0xa0 crypto/shash.c:52 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:491 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] ima_calc_file_hash+0x1804/0x3c90 security/integrity/ima/ima_crypto.c:568 ima_collect_measurement+0x464/0xd20 security/integrity/ima/ima_api.c:293 process_measurement+0x2948/0x3f30 security/integrity/ima/ima_main.c:372 ima_file_check+0xb4/0x100 security/integrity/ima/ima_main.c:572 security_file_post_open+0xc6/0x540 security/security.c:3127 do_open fs/namei.c:3776 [inline] path_openat+0x58cc/0x6200 fs/namei.c:3933 do_filp_open+0x20e/0x590 fs/namei.c:3960 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_open fs/open.c:1438 [inline] __se_sys_open fs/open.c:1434 [inline] __x64_sys_open+0x275/0x2d0 fs/open.c:1434 x64_sys_call+0x15a2/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:3 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: memcpy_to_iter lib/iov_iter.c:65 [inline] iterate_kvec include/linux/iov_iter.h:86 [inline] iterate_and_advance2 include/linux/iov_iter.h:306 [inline] iterate_and_advance include/linux/iov_iter.h:328 [inline] _copy_to_iter+0x124a/0x2b30 lib/iov_iter.c:185 copy_page_to_iter+0x419/0x880 lib/iov_iter.c:362 copy_folio_to_iter include/linux/uio.h:189 [inline] filemap_read+0xc13/0x1500 mm/filemap.c:2696 generic_file_read_iter+0x136/0xad0 mm/filemap.c:2833 __kernel_read+0x726/0xd30 fs/read_write.c:527 integrity_kernel_read+0x77/0x90 security/integrity/iint.c:28 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:480 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] ima_calc_file_hash+0x1731/0x3c90 security/integrity/ima/ima_crypto.c:568 ima_collect_measurement+0x464/0xd20 security/integrity/ima/ima_api.c:293 process_measurement+0x2948/0x3f30 security/integrity/ima/ima_main.c:372 ima_file_check+0xb4/0x100 security/integrity/ima/ima_main.c:572 security_file_post_open+0xc6/0x540 security/security.c:3127 do_open fs/namei.c:3776 [inline] path_openat+0x58cc/0x6200 fs/namei.c:3933 do_filp_open+0x20e/0x590 fs/namei.c:3960 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_open fs/open.c:1438 [inline] __se_sys_open fs/open.c:1434 [inline] __x64_sys_open+0x275/0x2d0 fs/open.c:1434 x64_sys_call+0x15a2/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:3 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: __alloc_pages_noprof+0x9d6/0xe70 mm/page_alloc.c:4756 alloc_pages_mpol_noprof+0x299/0x990 mm/mempolicy.c:2265 alloc_pages_noprof mm/mempolicy.c:2345 [inline] folio_alloc_noprof+0x1db/0x310 mm/mempolicy.c:2352 filemap_alloc_folio_noprof+0xa6/0x440 mm/filemap.c:1010 __filemap_get_folio+0xac4/0x1550 mm/filemap.c:1952 block_write_begin+0x6e/0x2b0 fs/buffer.c:2226 exfat_write_begin+0xfb/0x400 fs/exfat/inode.c:434 exfat_extend_valid_size fs/exfat/file.c:553 [inline] exfat_file_write_iter+0x474/0xfb0 fs/exfat/file.c:588 new_sync_write fs/read_write.c:590 [inline] vfs_write+0xb28/0x1540 fs/read_write.c:683 ksys_write+0x24f/0x4c0 fs/read_write.c:736 __do_sys_write fs/read_write.c:748 [inline] __se_sys_write fs/read_write.c:745 [inline] __x64_sys_write+0x93/0xe0 fs/read_write.c:745 x64_sys_call+0x306a/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 7910 Comm: syz.2.975 Not tainted 6.11.0-syzkaller-11728-gad46e8f95e93 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ===================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@...glegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
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