| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <00000000000064f7a40618158fd5@google.com> Date: Fri, 10 May 2024 01:45:39 -0700 From: syzbot <syzbot+8d0e17030490d2299222@...kaller.appspotmail.com> To: bfoster@...hat.com, kent.overstreet@...ux.dev, linux-bcachefs@...r.kernel.org, linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: [syzbot] [bcachefs?] KMSAN: uninit-value in bch2_checksum_update Hello, syzbot found the following issue on: HEAD commit: 45db3ab70092 Merge tag '6.9-rc7-ksmbd-fixes' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12bc7d04980000 kernel config: https://syzkaller.appspot.com/x/.config?x=617171361dd3cd47 dashboard link: https://syzkaller.appspot.com/bug?extid=8d0e17030490d2299222 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=14b58970980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/232e7c2a73a5/disk-45db3ab7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7e9bf7c936ab/vmlinux-45db3ab7.xz kernel image: https://storage.googleapis.com/syzbot-assets/5e8f98ee02d8/bzImage-45db3ab7.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/3f122e1fb69e/mount_2.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8d0e17030490d2299222@...kaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in crc64_be+0x202/0x310 lib/crc64.c:59 crc64_be+0x202/0x310 lib/crc64.c:59 bch2_checksum_update+0x15e/0x1d0 fs/bcachefs/checksum.c:87 bch2_checksum+0x3c5/0x7c0 fs/bcachefs/checksum.c:216 __bch2_btree_node_write+0x528c/0x67c0 fs/bcachefs/btree_io.c:2151 bch2_btree_node_write+0xa5/0x2e0 fs/bcachefs/btree_io.c:2288 btree_node_write_if_need fs/bcachefs/btree_io.h:153 [inline] btree_update_nodes_written fs/bcachefs/btree_update_interior.c:829 [inline] btree_interior_update_work+0x3e09/0x47f0 fs/bcachefs/btree_update_interior.c:857 process_one_work kernel/workqueue.c:3267 [inline] process_scheduled_works+0xa81/0x1bd0 kernel/workqueue.c:3348 worker_thread+0xea5/0x1560 kernel/workqueue.c:3429 kthread+0x3e2/0x540 kernel/kthread.c:388 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Uninit was stored to memory at: memcpy_u64s_small fs/bcachefs/util.h:511 [inline] bkey_p_copy fs/bcachefs/bkey.h:46 [inline] bch2_sort_keys+0x1b4d/0x2cb0 fs/bcachefs/bkey_sort.c:194 __bch2_btree_node_write+0x3acd/0x67c0 fs/bcachefs/btree_io.c:2100 bch2_btree_node_write+0xa5/0x2e0 fs/bcachefs/btree_io.c:2288 btree_node_write_if_need fs/bcachefs/btree_io.h:153 [inline] btree_update_nodes_written fs/bcachefs/btree_update_interior.c:829 [inline] btree_interior_update_work+0x3e09/0x47f0 fs/bcachefs/btree_update_interior.c:857 process_one_work kernel/workqueue.c:3267 [inline] process_scheduled_works+0xa81/0x1bd0 kernel/workqueue.c:3348 worker_thread+0xea5/0x1560 kernel/workqueue.c:3429 kthread+0x3e2/0x540 kernel/kthread.c:388 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Uninit was created at: __kmalloc_large_node+0x231/0x370 mm/slub.c:3927 __do_kmalloc_node mm/slub.c:3960 [inline] __kmalloc_node+0xb10/0x10c0 mm/slub.c:3979 kmalloc_node include/linux/slab.h:648 [inline] kvmalloc_node+0xc0/0x2d0 mm/util.c:634 kvmalloc include/linux/slab.h:766 [inline] btree_node_data_alloc fs/bcachefs/btree_cache.c:98 [inline] __bch2_btree_node_mem_alloc+0x2cf/0x9d0 fs/bcachefs/btree_cache.c:143 bch2_fs_btree_cache_init+0x4d1/0x960 fs/bcachefs/btree_cache.c:479 bch2_fs_alloc+0x33ca/0x4210 fs/bcachefs/super.c:923 bch2_fs_open+0xd9b/0x15f0 fs/bcachefs/super.c:2084 bch2_mount+0x90d/0x1d90 fs/bcachefs/fs.c:1903 legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1779 do_new_mount+0x71f/0x15e0 fs/namespace.c:3352 path_mount+0x742/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount+0x725/0x810 fs/namespace.c:3875 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875 x64_sys_call+0x2bf4/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:166 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: 3712 Comm: kworker/u8:21 Not tainted 6.9.0-rc7-syzkaller-00056-g45db3ab70092 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Workqueue: btree_update btree_interior_update_work ===================================================== --- 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
Powered by blists - more mailing lists