From: syzbot <syzbot+7bc44a489f0ef0670bd5@syzkaller.appspotmail.com>
To: dmitry.kasatkin@gmail.com, eric.snowberg@oracle.com,
jmorris@namei.org, linux-fsdevel@vger.kernel.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, roberto.sassu@huaweicloud.com,
serge@hallyn.com, syzkaller-bugs@googlegroups.com,
zohar@linux.ibm.com
Subject: Re: [syzbot] [lsm?] [integrity?] KMSAN: uninit-value in ima_add_template_entry
Date: Sat, 02 Mar 2024 14:01:23 -0800 [thread overview]
Message-ID: <0000000000001f13040612b4a2f4@google.com> (raw)
In-Reply-To: <0000000000002be12a0611ca7ff8@google.com>
syzbot has found a reproducer for the following issue on:
HEAD commit: 5ad3cb0ed525 Merge tag 'for-v6.8-rc2' of git://git.kernel...
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=15fdefac180000
kernel config: https://syzkaller.appspot.com/x/.config?x=80c7a82a572c0de3
dashboard link: https://syzkaller.appspot.com/bug?extid=7bc44a489f0ef0670bd5
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=11917b26180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1256096a180000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/a148235ac5b1/disk-5ad3cb0e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/4b06f4d02ad6/vmlinux-5ad3cb0e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7fff06beed25/bzImage-5ad3cb0e.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/adece4ed9c9c/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+7bc44a489f0ef0670bd5@syzkaller.appspotmail.com
erofs: (device loop0): mounted with root inode @ nid 36.
=====================================================
BUG: KMSAN: uninit-value in ima_add_template_entry+0x52b/0x870 security/integrity/ima/ima_queue.c:172
ima_add_template_entry+0x52b/0x870 security/integrity/ima/ima_queue.c:172
ima_store_template security/integrity/ima/ima_api.c:122 [inline]
ima_store_measurement+0x371/0x8d0 security/integrity/ima/ima_api.c:376
process_measurement+0x2c6e/0x3ef0 security/integrity/ima/ima_main.c:367
ima_file_check+0xb3/0x100 security/integrity/ima/ima_main.c:557
do_open fs/namei.c:3647 [inline]
path_openat+0x4d09/0x5ad0 fs/namei.c:3802
do_filp_open+0x20d/0x590 fs/namei.c:3829
do_sys_openat2+0x1bf/0x2f0 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_sys_open fs/open.c:1427 [inline]
__se_sys_open fs/open.c:1423 [inline]
__x64_sys_open+0x275/0x2d0 fs/open.c:1423
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
<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/0x2e80 lib/crypto/sha256.c:127
lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline]
sha256_update+0x2fb/0x340 lib/crypto/sha256.c:136
crypto_sha256_update+0x37/0x60 crypto/sha256_generic.c:39
crypto_shash_update+0x75/0xa0 crypto/shash.c:70
ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:496 [inline]
ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
ima_calc_file_hash+0x1816/0x3cc0 security/integrity/ima/ima_crypto.c:573
ima_collect_measurement+0x44d/0xdd0 security/integrity/ima/ima_api.c:290
process_measurement+0x2936/0x3ef0 security/integrity/ima/ima_main.c:359
ima_file_check+0xb3/0x100 security/integrity/ima/ima_main.c:557
do_open fs/namei.c:3647 [inline]
path_openat+0x4d09/0x5ad0 fs/namei.c:3802
do_filp_open+0x20d/0x590 fs/namei.c:3829
do_sys_openat2+0x1bf/0x2f0 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_sys_open fs/open.c:1427 [inline]
__se_sys_open fs/open.c:1423 [inline]
__x64_sys_open+0x275/0x2d0 fs/open.c:1423
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
Uninit was stored to memory at:
sha256_transform lib/crypto/sha256.c:117 [inline]
sha256_transform_blocks+0x2dbf/0x2e80 lib/crypto/sha256.c:127
lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline]
sha256_update+0x2fb/0x340 lib/crypto/sha256.c:136
crypto_sha256_update+0x37/0x60 crypto/sha256_generic.c:39
crypto_shash_update+0x75/0xa0 crypto/shash.c:70
ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:496 [inline]
ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
ima_calc_file_hash+0x1816/0x3cc0 security/integrity/ima/ima_crypto.c:573
ima_collect_measurement+0x44d/0xdd0 security/integrity/ima/ima_api.c:290
process_measurement+0x2936/0x3ef0 security/integrity/ima/ima_main.c:359
ima_file_check+0xb3/0x100 security/integrity/ima/ima_main.c:557
do_open fs/namei.c:3647 [inline]
path_openat+0x4d09/0x5ad0 fs/namei.c:3802
do_filp_open+0x20d/0x590 fs/namei.c:3829
do_sys_openat2+0x1bf/0x2f0 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_sys_open fs/open.c:1427 [inline]
__se_sys_open fs/open.c:1423 [inline]
__x64_sys_open+0x275/0x2d0 fs/open.c:1423
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
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+0xf33/0x2e80 lib/crypto/sha256.c:127
lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline]
sha256_update+0x2fb/0x340 lib/crypto/sha256.c:136
crypto_sha256_update+0x37/0x60 crypto/sha256_generic.c:39
crypto_shash_update+0x75/0xa0 crypto/shash.c:70
ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:496 [inline]
ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
ima_calc_file_hash+0x1816/0x3cc0 security/integrity/ima/ima_crypto.c:573
ima_collect_measurement+0x44d/0xdd0 security/integrity/ima/ima_api.c:290
process_measurement+0x2936/0x3ef0 security/integrity/ima/ima_main.c:359
ima_file_check+0xb3/0x100 security/integrity/ima/ima_main.c:557
do_open fs/namei.c:3647 [inline]
path_openat+0x4d09/0x5ad0 fs/namei.c:3802
do_filp_open+0x20d/0x590 fs/namei.c:3829
do_sys_openat2+0x1bf/0x2f0 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_sys_open fs/open.c:1427 [inline]
__se_sys_open fs/open.c:1423 [inline]
__x64_sys_open+0x275/0x2d0 fs/open.c:1423
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
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/0x2e80 lib/crypto/sha256.c:127
lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline]
sha256_update+0x2fb/0x340 lib/crypto/sha256.c:136
crypto_sha256_update+0x37/0x60 crypto/sha256_generic.c:39
crypto_shash_update+0x75/0xa0 crypto/shash.c:70
ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:496 [inline]
ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
ima_calc_file_hash+0x1816/0x3cc0 security/integrity/ima/ima_crypto.c:573
ima_collect_measurement+0x44d/0xdd0 security/integrity/ima/ima_api.c:290
process_measurement+0x2936/0x3ef0 security/integrity/ima/ima_main.c:359
ima_file_check+0xb3/0x100 security/integrity/ima/ima_main.c:557
do_open fs/namei.c:3647 [inline]
path_openat+0x4d09/0x5ad0 fs/namei.c:3802
do_filp_open+0x20d/0x590 fs/namei.c:3829
do_sys_openat2+0x1bf/0x2f0 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_sys_open fs/open.c:1427 [inline]
__se_sys_open fs/open.c:1423 [inline]
__x64_sys_open+0x275/0x2d0 fs/open.c:1423
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
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+0xfb5/0x2e80 lib/crypto/sha256.c:127
lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline]
sha256_update+0x2fb/0x340 lib/crypto/sha256.c:136
crypto_sha256_update+0x37/0x60 crypto/sha256_generic.c:39
crypto_shash_update+0x75/0xa0 crypto/shash.c:70
ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:496 [inline]
ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
ima_calc_file_hash+0x1816/0x3cc0 security/integrity/ima/ima_crypto.c:573
ima_collect_measurement+0x44d/0xdd0 security/integrity/ima/ima_api.c:290
process_measurement+0x2936/0x3ef0 security/integrity/ima/ima_main.c:359
ima_file_check+0xb3/0x100 security/integrity/ima/ima_main.c:557
do_open fs/namei.c:3647 [inline]
path_openat+0x4d09/0x5ad0 fs/namei.c:3802
do_filp_open+0x20d/0x590 fs/namei.c:3829
do_sys_openat2+0x1bf/0x2f0 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_sys_open fs/open.c:1427 [inline]
__se_sys_open fs/open.c:1423 [inline]
__x64_sys_open+0x275/0x2d0 fs/open.c:1423
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
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+0x2c35/0x2e80 lib/crypto/sha256.c:127
lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline]
sha256_update+0x2fb/0x340 lib/crypto/sha256.c:136
crypto_sha256_update+0x37/0x60 crypto/sha256_generic.c:39
crypto_shash_update+0x75/0xa0 crypto/shash.c:70
ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:496 [inline]
ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
ima_calc_file_hash+0x1816/0x3cc0 security/integrity/ima/ima_crypto.c:573
ima_collect_measurement+0x44d/0xdd0 security/integrity/ima/ima_api.c:290
process_measurement+0x2936/0x3ef0 security/integrity/ima/ima_main.c:359
ima_file_check+0xb3/0x100 security/integrity/ima/ima_main.c:557
do_open fs/namei.c:3647 [inline]
path_openat+0x4d09/0x5ad0 fs/namei.c:3802
do_filp_open+0x20d/0x590 fs/namei.c:3829
do_sys_openat2+0x1bf/0x2f0 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_sys_open fs/open.c:1427 [inline]
__se_sys_open fs/open.c:1423 [inline]
__x64_sys_open+0x275/0x2d0 fs/open.c:1423
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
Uninit was stored to memory at:
memcpy_to_iter lib/iov_iter.c:65 [inline]
iterate_kvec include/linux/iov_iter.h:85 [inline]
iterate_and_advance2 include/linux/iov_iter.h:251 [inline]
iterate_and_advance include/linux/iov_iter.h:271 [inline]
_copy_to_iter+0x125a/0x2520 lib/iov_iter.c:186
copy_page_to_iter+0x419/0x870 lib/iov_iter.c:381
copy_folio_to_iter include/linux/uio.h:181 [inline]
filemap_read+0xbf4/0x14d0 mm/filemap.c:2654
generic_file_read_iter+0x136/0xad0 mm/filemap.c:2784
__kernel_read+0x724/0xce0 fs/read_write.c:434
integrity_kernel_read+0x77/0x90 security/integrity/iint.c:221
ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:485 [inline]
ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
ima_calc_file_hash+0x1743/0x3cc0 security/integrity/ima/ima_crypto.c:573
ima_collect_measurement+0x44d/0xdd0 security/integrity/ima/ima_api.c:290
process_measurement+0x2936/0x3ef0 security/integrity/ima/ima_main.c:359
ima_file_check+0xb3/0x100 security/integrity/ima/ima_main.c:557
do_open fs/namei.c:3647 [inline]
path_openat+0x4d09/0x5ad0 fs/namei.c:3802
do_filp_open+0x20d/0x590 fs/namei.c:3829
do_sys_openat2+0x1bf/0x2f0 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_sys_open fs/open.c:1427 [inline]
__se_sys_open fs/open.c:1423 [inline]
__x64_sys_open+0x275/0x2d0 fs/open.c:1423
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
Uninit was created at:
__alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590
alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133
alloc_pages mm/mempolicy.c:2204 [inline]
folio_alloc+0x1da/0x380 mm/mempolicy.c:2211
filemap_alloc_folio+0xa5/0x430 mm/filemap.c:975
page_cache_ra_unbounded+0x2cc/0x960 mm/readahead.c:247
do_page_cache_ra mm/readahead.c:299 [inline]
page_cache_ra_order+0xe31/0xee0 mm/readahead.c:544
ondemand_readahead+0x157d/0x1750 mm/readahead.c:666
page_cache_sync_ra+0x724/0x760 mm/readahead.c:693
page_cache_sync_readahead include/linux/pagemap.h:1300 [inline]
filemap_get_pages+0x4c4/0x2bd0 mm/filemap.c:2498
filemap_read+0x59e/0x14d0 mm/filemap.c:2594
generic_file_read_iter+0x136/0xad0 mm/filemap.c:2784
__kernel_read+0x724/0xce0 fs/read_write.c:434
integrity_kernel_read+0x77/0x90 security/integrity/iint.c:221
ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:485 [inline]
ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
ima_calc_file_hash+0x1743/0x3cc0 security/integrity/ima/ima_crypto.c:573
ima_collect_measurement+0x44d/0xdd0 security/integrity/ima/ima_api.c:290
process_measurement+0x2936/0x3ef0 security/integrity/ima/ima_main.c:359
ima_file_check+0xb3/0x100 security/integrity/ima/ima_main.c:557
do_open fs/namei.c:3647 [inline]
path_openat+0x4d09/0x5ad0 fs/namei.c:3802
do_filp_open+0x20d/0x590 fs/namei.c:3829
do_sys_openat2+0x1bf/0x2f0 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_sys_open fs/open.c:1427 [inline]
__se_sys_open fs/open.c:1423 [inline]
__x64_sys_open+0x275/0x2d0 fs/open.c:1423
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
CPU: 0 PID: 5012 Comm: syz-executor394 Not tainted 6.8.0-rc6-syzkaller-00238-g5ad3cb0ed525 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
=====================================================
---
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.
prev parent reply other threads:[~2024-03-02 22:01 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-20 6:41 [syzbot] [integrity?] [lsm?] KMSAN: uninit-value in ima_add_template_entry syzbot
2024-02-20 10:40 ` Roberto Sassu
2024-03-03 14:54 ` Tetsuo Handa
2024-03-03 14:54 ` Tetsuo Handa
2024-03-03 23:53 ` Gao Xiang
2024-03-03 23:53 ` Gao Xiang
2024-03-04 3:53 ` [PATCH] erofs: fix uninitialized page cache reported by KMSAN Gao Xiang
2024-03-04 3:53 ` Gao Xiang
2024-03-04 6:04 ` Gao Xiang
2024-03-04 6:04 ` Gao Xiang
2024-03-04 6:51 ` [syzbot] [erofs] KMSAN: uninit-value in ima_add_template_entry syzbot
2024-03-04 17:51 ` [PATCH] erofs: fix uninitialized page cache reported by KMSAN Sandeep Dhavale via Linux-erofs
2024-03-04 17:51 ` Sandeep Dhavale
2024-03-05 2:17 ` Yue Hu
2024-03-05 2:17 ` Yue Hu
2024-03-07 1:04 ` Chao Yu
2024-03-04 8:15 ` [syzbot] [integrity?] [lsm?] KMSAN: uninit-value in ima_add_template_entry Roberto Sassu
2024-03-04 8:15 ` Roberto Sassu
2024-03-02 22:01 ` syzbot [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=0000000000001f13040612b4a2f4@google.com \
--to=syzbot+7bc44a489f0ef0670bd5@syzkaller.appspotmail.com \
--cc=dmitry.kasatkin@gmail.com \
--cc=eric.snowberg@oracle.com \
--cc=jmorris@namei.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-integrity@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=paul@paul-moore.com \
--cc=roberto.sassu@huawei.com \
--cc=roberto.sassu@huaweicloud.com \
--cc=serge@hallyn.com \
--cc=syzkaller-bugs@googlegroups.com \
--cc=zohar@linux.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.