* [syzbot] [crypto?] KMSAN: uninit-value in __crc32c_le_base (4)
@ 2024-04-01 21:52 syzbot
2024-04-03 9:39 ` Herbert Xu
2024-05-09 7:22 ` [syzbot] [btrfs] " syzbot
0 siblings, 2 replies; 3+ messages in thread
From: syzbot @ 2024-04-01 21:52 UTC (permalink / raw)
To: davem, herbert, linux-crypto, linux-kernel, syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: 8d025e2092e2 Merge tag 'erofs-for-6.9-rc2-fixes' of git://..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1385be41180000
kernel config: https://syzkaller.appspot.com/x/.config?x=e2599baf258ef795
dashboard link: https://syzkaller.appspot.com/bug?extid=549710bad9c798e25b15
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5ccde1a19e22/disk-8d025e20.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/45420817e7d9/vmlinux-8d025e20.xz
kernel image: https://storage.googleapis.com/syzbot-assets/354bdafd8c8f/bzImage-8d025e20.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+549710bad9c798e25b15@syzkaller.appspotmail.com
=====================================================
BUG: KMSAN: uninit-value in crc32_body lib/crc32.c:110 [inline]
BUG: KMSAN: uninit-value in crc32_le_generic lib/crc32.c:179 [inline]
BUG: KMSAN: uninit-value in __crc32c_le_base+0x43c/0xd80 lib/crc32.c:201
crc32_body lib/crc32.c:110 [inline]
crc32_le_generic lib/crc32.c:179 [inline]
__crc32c_le_base+0x43c/0xd80 lib/crc32.c:201
chksum_update+0x5b/0xd0 crypto/crc32c_generic.c:88
crypto_shash_update+0x79/0xa0 crypto/shash.c:70
csum_tree_block+0x35f/0x5d0 fs/btrfs/disk-io.c:96
btree_csum_one_bio+0x4d5/0xeb0 fs/btrfs/disk-io.c:294
btrfs_bio_csum fs/btrfs/bio.c:538 [inline]
btrfs_submit_chunk fs/btrfs/bio.c:741 [inline]
btrfs_submit_bio+0x1eb6/0x2930 fs/btrfs/bio.c:770
write_one_eb+0x13fa/0x1570 fs/btrfs/extent_io.c:1750
submit_eb_page fs/btrfs/extent_io.c:1909 [inline]
btree_write_cache_pages+0x1d2a/0x29a0 fs/btrfs/extent_io.c:1959
btree_writepages+0x84/0x270 fs/btrfs/disk-io.c:516
do_writepages+0x427/0xc30 mm/page-writeback.c:2612
filemap_fdatawrite_wbc+0x1d8/0x270 mm/filemap.c:397
__filemap_fdatawrite_range mm/filemap.c:430 [inline]
filemap_fdatawrite_range+0xe1/0x110 mm/filemap.c:448
btrfs_write_marked_extents+0x2e7/0x620 fs/btrfs/transaction.c:1154
btrfs_sync_log+0x9fd/0x3830 fs/btrfs/tree-log.c:2969
btrfs_sync_file+0x144c/0x1c60 fs/btrfs/file.c:1968
vfs_fsync_range+0x20d/0x270 fs/sync.c:188
generic_write_sync include/linux/fs.h:2793 [inline]
btrfs_do_write_iter+0x1c5f/0x2270 fs/btrfs/file.c:1695
btrfs_file_write_iter+0x38/0x50 fs/btrfs/file.c:1705
call_write_iter include/linux/fs.h:2108 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xb63/0x1520 fs/read_write.c:590
ksys_write+0x20f/0x4c0 fs/read_write.c:643
__do_sys_write fs/read_write.c:655 [inline]
__se_sys_write fs/read_write.c:652 [inline]
__x64_sys_write+0x93/0xe0 fs/read_write.c:652
do_syscall_64+0xd5/0x1f0
entry_SYSCALL_64_after_hwframe+0x6d/0x75
Uninit was created at:
__alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598
__alloc_pages_bulk+0x19e/0x21e0 mm/page_alloc.c:4523
alloc_pages_bulk_array include/linux/gfp.h:202 [inline]
btrfs_alloc_page_array+0x9e/0x460 fs/btrfs/extent_io.c:689
alloc_eb_folio_array fs/btrfs/extent_io.c:724 [inline]
alloc_extent_buffer+0xa68/0x4180 fs/btrfs/extent_io.c:3859
btrfs_find_create_tree_block+0x46/0x60 fs/btrfs/disk-io.c:610
btrfs_init_new_buffer fs/btrfs/extent-tree.c:5063 [inline]
btrfs_alloc_tree_block+0x35c/0x17c0 fs/btrfs/extent-tree.c:5178
btrfs_alloc_log_tree_node fs/btrfs/disk-io.c:960 [inline]
btrfs_add_log_tree+0x1b7/0x7a0 fs/btrfs/disk-io.c:1008
start_log_trans fs/btrfs/tree-log.c:208 [inline]
btrfs_log_inode_parent+0x9b6/0x1dd0 fs/btrfs/tree-log.c:7066
btrfs_log_dentry_safe+0x9a/0x100 fs/btrfs/tree-log.c:7171
btrfs_sync_file+0x126c/0x1c60 fs/btrfs/file.c:1933
vfs_fsync_range+0x20d/0x270 fs/sync.c:188
generic_write_sync include/linux/fs.h:2793 [inline]
btrfs_do_write_iter+0x1c5f/0x2270 fs/btrfs/file.c:1695
btrfs_file_write_iter+0x38/0x50 fs/btrfs/file.c:1705
call_write_iter include/linux/fs.h:2108 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xb63/0x1520 fs/read_write.c:590
ksys_write+0x20f/0x4c0 fs/read_write.c:643
__do_sys_write fs/read_write.c:655 [inline]
__se_sys_write fs/read_write.c:652 [inline]
__x64_sys_write+0x93/0xe0 fs/read_write.c:652
do_syscall_64+0xd5/0x1f0
entry_SYSCALL_64_after_hwframe+0x6d/0x75
CPU: 1 PID: 5344 Comm: syz-executor.4 Not tainted 6.9.0-rc1-syzkaller-00061-g8d025e2092e2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
=====================================================
---
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:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
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If the report is a duplicate of another one, reply with:
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If you want to undo deduplication, reply with:
#syz undup
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [syzbot] [crypto?] KMSAN: uninit-value in __crc32c_le_base (4)
2024-04-01 21:52 [syzbot] [crypto?] KMSAN: uninit-value in __crc32c_le_base (4) syzbot
@ 2024-04-03 9:39 ` Herbert Xu
2024-05-09 7:22 ` [syzbot] [btrfs] " syzbot
1 sibling, 0 replies; 3+ messages in thread
From: Herbert Xu @ 2024-04-03 9:39 UTC (permalink / raw)
To: syzbot; +Cc: davem, linux-crypto, linux-kernel, syzkaller-bugs
#syz set subsystems: btrfs
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [syzbot] [btrfs] KMSAN: uninit-value in __crc32c_le_base (4)
2024-04-01 21:52 [syzbot] [crypto?] KMSAN: uninit-value in __crc32c_le_base (4) syzbot
2024-04-03 9:39 ` Herbert Xu
@ 2024-05-09 7:22 ` syzbot
1 sibling, 0 replies; 3+ messages in thread
From: syzbot @ 2024-05-09 7:22 UTC (permalink / raw)
To: clm, davem, dsterba, herbert, josef, linux-btrfs, linux-crypto,
linux-kernel, syzkaller-bugs
syzbot has found a reproducer for the following issue on:
HEAD commit: 6d7ddd805123 Merge tag 'soc-fixes-6.9-3' of git://git.kern..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=1094303f180000
kernel config: https://syzkaller.appspot.com/x/.config?x=617171361dd3cd47
dashboard link: https://syzkaller.appspot.com/bug?extid=549710bad9c798e25b15
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=11047204980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17a2905c980000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/49caca594b2f/disk-6d7ddd80.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/cad0ed0e7e81/vmlinux-6d7ddd80.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c5403827515b/bzImage-6d7ddd80.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/dfb350d62061/mount_2.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+549710bad9c798e25b15@syzkaller.appspotmail.com
=====================================================
BUG: KMSAN: uninit-value in crc32_body lib/crc32.c:110 [inline]
BUG: KMSAN: uninit-value in crc32_le_generic lib/crc32.c:179 [inline]
BUG: KMSAN: uninit-value in __crc32c_le_base+0x43c/0xd80 lib/crc32.c:201
crc32_body lib/crc32.c:110 [inline]
crc32_le_generic lib/crc32.c:179 [inline]
__crc32c_le_base+0x43c/0xd80 lib/crc32.c:201
chksum_update+0x5b/0xd0 crypto/crc32c_generic.c:88
crypto_shash_update+0x79/0xa0 crypto/shash.c:70
csum_tree_block+0x35f/0x5d0 fs/btrfs/disk-io.c:96
btree_csum_one_bio+0x4d5/0xeb0 fs/btrfs/disk-io.c:294
btrfs_bio_csum fs/btrfs/bio.c:538 [inline]
btrfs_submit_chunk fs/btrfs/bio.c:741 [inline]
btrfs_submit_bio+0x1eb6/0x2930 fs/btrfs/bio.c:770
write_one_eb+0x13fa/0x1570 fs/btrfs/extent_io.c:1740
submit_eb_page fs/btrfs/extent_io.c:1899 [inline]
btree_write_cache_pages+0x1d2a/0x29a0 fs/btrfs/extent_io.c:1949
btree_writepages+0x84/0x270 fs/btrfs/disk-io.c:516
do_writepages+0x427/0xc30 mm/page-writeback.c:2612
filemap_fdatawrite_wbc+0x1d8/0x270 mm/filemap.c:397
__filemap_fdatawrite_range mm/filemap.c:430 [inline]
filemap_fdatawrite_range+0xe1/0x110 mm/filemap.c:448
btrfs_write_marked_extents+0x2e7/0x620 fs/btrfs/transaction.c:1153
btrfs_sync_log+0x9fd/0x3830 fs/btrfs/tree-log.c:2969
btrfs_sync_file+0x144c/0x1c60 fs/btrfs/file.c:1968
vfs_fsync_range+0x20d/0x270 fs/sync.c:188
generic_write_sync include/linux/fs.h:2795 [inline]
btrfs_do_write_iter+0x1c5f/0x2270 fs/btrfs/file.c:1695
btrfs_file_write_iter+0x38/0x50 fs/btrfs/file.c:1705
do_iter_readv_writev+0x7e6/0x960
vfs_writev+0x574/0x1450 fs/read_write.c:971
do_writev+0x251/0x5c0 fs/read_write.c:1018
__do_sys_writev fs/read_write.c:1091 [inline]
__se_sys_writev fs/read_write.c:1088 [inline]
__x64_sys_writev+0x98/0xe0 fs/read_write.c:1088
x64_sys_call+0x23dc/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:21
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+0x77/0x7f
Uninit was created at:
__alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598
__alloc_pages_bulk+0x19e/0x21e0 mm/page_alloc.c:4523
alloc_pages_bulk_array include/linux/gfp.h:202 [inline]
btrfs_alloc_page_array fs/btrfs/extent_io.c:690 [inline]
alloc_eb_folio_array+0x19b/0x760 fs/btrfs/extent_io.c:714
alloc_extent_buffer+0x965/0x3ad0 fs/btrfs/extent_io.c:3849
btrfs_find_create_tree_block+0x46/0x60 fs/btrfs/disk-io.c:610
btrfs_init_new_buffer fs/btrfs/extent-tree.c:5071 [inline]
btrfs_alloc_tree_block+0x35c/0x17c0 fs/btrfs/extent-tree.c:5186
btrfs_alloc_log_tree_node fs/btrfs/disk-io.c:960 [inline]
btrfs_add_log_tree+0x1b7/0x7a0 fs/btrfs/disk-io.c:1008
start_log_trans fs/btrfs/tree-log.c:208 [inline]
btrfs_log_inode_parent+0x9b6/0x1dd0 fs/btrfs/tree-log.c:7066
btrfs_log_dentry_safe+0x9a/0x100 fs/btrfs/tree-log.c:7171
btrfs_sync_file+0x126c/0x1c60 fs/btrfs/file.c:1933
vfs_fsync_range+0x20d/0x270 fs/sync.c:188
generic_write_sync include/linux/fs.h:2795 [inline]
btrfs_do_write_iter+0x1c5f/0x2270 fs/btrfs/file.c:1695
btrfs_file_write_iter+0x38/0x50 fs/btrfs/file.c:1705
do_iter_readv_writev+0x7e6/0x960
vfs_writev+0x574/0x1450 fs/read_write.c:971
do_writev+0x251/0x5c0 fs/read_write.c:1018
__do_sys_writev fs/read_write.c:1091 [inline]
__se_sys_writev fs/read_write.c:1088 [inline]
__x64_sys_writev+0x98/0xe0 fs/read_write.c:1088
x64_sys_call+0x23dc/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:21
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+0x77/0x7f
CPU: 1 PID: 5036 Comm: syz-executor761 Not tainted 6.9.0-rc7-syzkaller-00023-g6d7ddd805123 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
=====================================================
---
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.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2024-05-09 7:22 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2024-04-01 21:52 [syzbot] [crypto?] KMSAN: uninit-value in __crc32c_le_base (4) syzbot
2024-04-03 9:39 ` Herbert Xu
2024-05-09 7:22 ` [syzbot] [btrfs] " syzbot
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