syzbot has found a reproducer for the following issue on: HEAD commit: 8d025e2092e2 Merge tag 'erofs-for-6.9-rc2-fixes' of git://.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=14fa8019180000 kernel config: https://syzkaller.appspot.com/x/.config?x=e2599baf258ef795 dashboard link: https://syzkaller.appspot.com/bug?extid=e126b819d8187b282d44 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=105065c6180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1034025e180000 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 mounted in repro: https://storage.googleapis.com/syzbot-assets/417a5560bbaa/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e126b819d8187b282d44@xxxxxxxxxxxxxxxxxxxxxxxxx loop0: detected capacity change from 0 to 1024 ===================================================== BUG: KMSAN: uninit-value in case_fold fs/hfsplus/unicode.c:23 [inline] BUG: KMSAN: uninit-value in hfsplus_strcasecmp+0x1ca/0x770 fs/hfsplus/unicode.c:47 case_fold fs/hfsplus/unicode.c:23 [inline] hfsplus_strcasecmp+0x1ca/0x770 fs/hfsplus/unicode.c:47 hfsplus_cat_case_cmp_key+0xde/0x190 fs/hfsplus/catalog.c:26 hfs_find_rec_by_key+0xb1/0x240 fs/hfsplus/bfind.c:100 __hfsplus_brec_find+0x26f/0x7b0 fs/hfsplus/bfind.c:135 hfsplus_brec_find+0x445/0x970 fs/hfsplus/bfind.c:195 hfsplus_brec_read+0x46/0x1a0 fs/hfsplus/bfind.c:222 hfsplus_fill_super+0x199e/0x2700 fs/hfsplus/super.c:531 mount_bdev+0x397/0x520 fs/super.c:1676 hfsplus_mount+0x4d/0x60 fs/hfsplus/super.c:647 legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1797 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 do_syscall_64+0xd5/0x1f0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 Uninit was created at: slab_post_alloc_hook mm/slub.c:3804 [inline] slab_alloc_node mm/slub.c:3845 [inline] __do_kmalloc_node mm/slub.c:3965 [inline] __kmalloc+0x6e4/0x1000 mm/slub.c:3979 kmalloc include/linux/slab.h:632 [inline] hfsplus_find_init+0x91/0x250 fs/hfsplus/bfind.c:21 hfsplus_fill_super+0x1688/0x2700 fs/hfsplus/super.c:525 mount_bdev+0x397/0x520 fs/super.c:1676 hfsplus_mount+0x4d/0x60 fs/hfsplus/super.c:647 legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1797 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 do_syscall_64+0xd5/0x1f0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 CPU: 1 PID: 5017 Comm: syz-executor416 Not tainted 6.9.0-rc1-syzkaller-00061-g8d025e2092e2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ===================================================== --- 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.
