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, roberto.sassu@huaweicloud.com,
serge@hallyn.com, syzkaller-bugs@googlegroups.com,
willy@infradead.org, yuezhang.mo@sony.com, zohar@linux.ibm.com
Subject: Re: [syzbot] [integrity?] [lsm?] KMSAN: uninit-value in ima_add_template_entry (2)
Date: Sun, 13 Oct 2024 12:06:23 -0700 [thread overview]
Message-ID: <670c1a2f.050a0220.3e960.0043.GAE@google.com> (raw)
In-Reply-To: <66fcf5a0.050a0220.f28ec.04f9.GAE@google.com>
syzbot has found a reproducer for the following issue on:
HEAD commit: 36c254515dc6 Merge tag 'powerpc-6.12-4' of git://git.kerne..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=13ba885f980000
kernel config: https://syzkaller.appspot.com/x/.config?x=981fe2ff8a1e457a
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=10eb8727980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=157e5087980000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/ea807517ae2f/disk-36c25451.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5f30861c9c3c/vmlinux-36c25451.xz
kernel image: https://storage.googleapis.com/syzbot-assets/8b5ef63bff6f/bzImage-36c25451.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/5402f23c14ef/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:3129
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:3129
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:3129
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:3129
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:3129
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:3129
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:3129
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:3129
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+0x9a7/0xe00 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
do_iter_readv_writev+0x88a/0xa30
vfs_writev+0x56a/0x14f0 fs/read_write.c:1064
do_pwritev fs/read_write.c:1165 [inline]
__do_sys_pwritev2 fs/read_write.c:1224 [inline]
__se_sys_pwritev2+0x280/0x470 fs/read_write.c:1215
__x64_sys_pwritev2+0x11f/0x1a0 fs/read_write.c:1215
x64_sys_call+0x2edb/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:329
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: 0 UID: 0 PID: 5186 Comm: syz-executor173 Not tainted 6.12.0-rc2-syzkaller-00307-g36c254515dc6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
=====================================================
---
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.
next prev parent reply other threads:[~2024-10-13 19:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-02 7:26 [syzbot] [integrity?] [lsm?] KMSAN: uninit-value in ima_add_template_entry (2) syzbot
2024-10-02 7:56 ` Roberto Sassu
2024-10-13 19:06 ` syzbot [this message]
2024-12-12 9:04 ` Yuezhang.Mo
2024-12-12 11:21 ` [syzbot] [lsm?] [integrity?] " syzbot
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=670c1a2f.050a0220.3e960.0043.GAE@google.com \
--to=syzbot+91ae49e1c1a2634d20c0@syzkaller.appspotmail.com \
--cc=dmitry.kasatkin@gmail.com \
--cc=eric.snowberg@oracle.com \
--cc=jmorris@namei.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=willy@infradead.org \
--cc=yuezhang.mo@sony.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.