Hello, syzbot found the following issue on:
HEAD commit: 6e4436539ae1 Merge tag 'hid-for-linus-2024081901' of git:/.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=17cc9387980000 kernel config: https://syzkaller.appspot.com/x/.config?x=62f882de896675a6 dashboard link: https://syzkaller.appspot.com/bug?extid=5c0423c85f295891c7f7 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=1338058d980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11d0f7f3980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/75208f1b057a/disk-6e443653.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/eeb34e49cb7e/vmlinux-6e443653.xz kernel image: https://storage.googleapis.com/syzbot-assets/bd6b9e2947c8/bzImage-6e443653.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/80d0f45895f2/mount_2.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5c0423c85f295891c...@syzkaller.appspotmail.com bcachefs (loop0): recovering from clean shutdown, journal seq 8 bcachefs (loop0): Doing compatible version upgrade from 1.7: mi_btree_bitmap to 1.11: disk_accounting_inum running recovery passes: check_allocations ===================================================== BUG: KMSAN: uninit-value in alloc_data_type fs/bcachefs/alloc_background.h:135 [inline] BUG: KMSAN: uninit-value in bch2_alloc_v4_validate+0x80a/0x1c10 fs/bcachefs/alloc_background.c:256 alloc_data_type fs/bcachefs/alloc_background.h:135 [inline] bch2_alloc_v4_validate+0x80a/0x1c10 fs/bcachefs/alloc_background.c:256 bch2_bkey_val_validate+0x2ac/0x470 fs/bcachefs/bkey_methods.c:143 bch2_btree_node_read_done+0x5be1/0x7790 fs/bcachefs/btree_io.c:1219 btree_node_read_work+0x973/0x1960 fs/bcachefs/btree_io.c:1323 bch2_btree_node_read+0x2e6b/0x36e0 __bch2_btree_root_read fs/bcachefs/btree_io.c:1749 [inline] bch2_btree_root_read+0xa81/0x13f0 fs/bcachefs/btree_io.c:1773 read_btree_roots+0x51c/0x1250 fs/bcachefs/recovery.c:516 bch2_fs_recovery+0x422c/0x5c60 fs/bcachefs/recovery.c:844 bch2_fs_start+0x7b2/0xbd0 fs/bcachefs/super.c:1036 bch2_fs_get_tree+0x13e8/0x22d0 fs/bcachefs/fs.c:1946 vfs_get_tree+0xa7/0x570 fs/super.c:1800 do_new_mount+0x71f/0x15e0 fs/namespace.c:3472 path_mount+0x742/0x1f10 fs/namespace.c:3799 do_mount fs/namespace.c:3812 [inline] __do_sys_mount fs/namespace.c:4020 [inline] __se_sys_mount+0x722/0x810 fs/namespace.c:3997 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3997 x64_sys_call+0x255a/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:166 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: ___kmalloc_large_node+0x22c/0x370 mm/slub.c:4113 __kmalloc_large_node_noprof+0x3f/0x1e0 mm/slub.c:4130 __do_kmalloc_node mm/slub.c:4146 [inline] __kmalloc_node_noprof+0x9d6/0xf50 mm/slub.c:4164 __kvmalloc_node_noprof+0xc0/0x2d0 mm/util.c:650 btree_bounce_alloc fs/bcachefs/btree_io.c:124 [inline] bch2_btree_node_read_done+0x52a9/0x7790 fs/bcachefs/btree_io.c:1192 btree_node_read_work+0x973/0x1960 fs/bcachefs/btree_io.c:1323 bch2_btree_node_read+0x2e6b/0x36e0 __bch2_btree_root_read fs/bcachefs/btree_io.c:1749 [inline] bch2_btree_root_read+0xa81/0x13f0 fs/bcachefs/btree_io.c:1773 read_btree_roots+0x51c/0x1250 fs/bcachefs/recovery.c:516 bch2_fs_recovery+0x422c/0x5c60 fs/bcachefs/recovery.c:844 bch2_fs_start+0x7b2/0xbd0 fs/bcachefs/super.c:1036 bch2_fs_get_tree+0x13e8/0x22d0 fs/bcachefs/fs.c:1946 vfs_get_tree+0xa7/0x570 fs/super.c:1800 do_new_mount+0x71f/0x15e0 fs/namespace.c:3472 path_mount+0x742/0x1f10 fs/namespace.c:3799 do_mount fs/namespace.c:3812 [inline] __do_sys_mount fs/namespace.c:4020 [inline] __se_sys_mount+0x722/0x810 fs/namespace.c:3997 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3997 x64_sys_call+0x255a/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:166 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: 5177 Comm: syz-executor142 Not tainted 6.11.0-rc4-syzkaller-00008-g6e4436539ae1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 ===================================================== --- 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 syzkal...@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 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
