From: syzbot <syzbot+91ae49e1c1a2634d20c0@syzkaller.appspotmail.com>
To: dmitry.kasatkin@gmail.com, eric.snowberg@oracle.com,
jmorris@namei.org, linux-integrity@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-security-module@vger.kernel.org, paul@paul-moore.com,
roberto.sassu@huawei.com, serge@hallyn.com,
syzkaller-bugs@googlegroups.com, zohar@linux.ibm.com
Subject: [syzbot] [integrity?] [lsm?] KMSAN: uninit-value in ima_add_template_entry (2)
Date: Wed, 02 Oct 2024 00:26:24 -0700 [thread overview]
Message-ID: <66fcf5a0.050a0220.f28ec.04f9.GAE@google.com> (raw)
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@syzkaller.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@googlegroups.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:
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If you want syzbot to run the reproducer, reply with:
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next reply other threads:[~2024-10-02 7:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-02 7:26 syzbot [this message]
2024-10-02 7:56 ` [syzbot] [integrity?] [lsm?] KMSAN: uninit-value in ima_add_template_entry (2) Roberto Sassu
2024-10-13 19:06 ` syzbot
2024-12-12 9:04 ` Yuezhang.Mo
2024-12-12 11:21 ` [syzbot] [lsm?] [integrity?] " syzbot
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