Hello, syzbot found the following issue on: HEAD commit: a472f15b3d1e kmsan: allow using __msan_instrument_asm_stor.. git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=14886381880000 kernel config: https://syzkaller.appspot.com/x/.config?x=1429f86b132e6d40 dashboard link: https://syzkaller.appspot.com/bug?extid=c6d8e1bffb0970780d5c compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project.git 610139d2d9ce6746b3c617fb3e2f7886272d26ff), GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/a8bf743ab4c3/disk-a472f15b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7248eae68bc7/vmlinux-a472f15b.xz kernel image: https://storage.googleapis.com/syzbot-assets/0e33e55592a5/bzImage-a472f15b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c6d8e1bffb0970780d5c@xxxxxxxxxxxxxxxxxxxxxxxxx ===================================================== BUG: KMSAN: uninit-value in hfsplus_attr_bin_cmp_key+0xed/0x180 fs/hfsplus/attributes.c:42 hfsplus_attr_bin_cmp_key+0xed/0x180 fs/hfsplus/attributes.c:42 hfs_find_rec_by_key+0xac/0x240 fs/hfsplus/bfind.c:100 __hfsplus_brec_find+0x27a/0x7d0 fs/hfsplus/bfind.c:135 hfsplus_brec_find+0x46a/0x9d0 fs/hfsplus/bfind.c:195 hfsplus_find_attr+0x308/0x380 __hfsplus_getxattr+0x380/0xe50 fs/hfsplus/xattr.c:522 hfsplus_getxattr+0x11f/0x1d0 fs/hfsplus/xattr.c:590 hfsplus_security_getxattr+0x4f/0x60 fs/hfsplus/xattr_security.c:20 __vfs_getxattr+0x699/0x6f0 fs/xattr.c:407 cap_inode_need_killpriv+0x52/0xb0 security/commoncap.c:301 security_inode_need_killpriv+0x8f/0x140 security/security.c:1422 dentry_needs_remove_privs+0x1b4/0x3f0 fs/inode.c:1995 do_truncate+0x11f/0x2d0 fs/open.c:57 handle_truncate fs/namei.c:3216 [inline] do_open fs/namei.c:3561 [inline] path_openat+0x4cf7/0x5600 fs/namei.c:3713 do_filp_open+0x249/0x660 fs/namei.c:3740 do_sys_openat2+0x1f0/0x910 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_creat fs/open.c:1402 [inline] __se_sys_creat fs/open.c:1396 [inline] __ia32_sys_creat+0xed/0x160 fs/open.c:1396 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 Uninit was created at: slab_post_alloc_hook mm/slab.h:742 [inline] slab_alloc_node mm/slub.c:3398 [inline] __kmem_cache_alloc_node+0x6ee/0xc90 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc+0x11d/0x3c0 mm/slab_common.c:968 kmalloc include/linux/slab.h:558 [inline] hfsplus_find_init+0x8d/0x250 fs/hfsplus/bfind.c:21 __hfsplus_getxattr+0x2d1/0xe50 fs/hfsplus/xattr.c:516 hfsplus_getxattr+0x11f/0x1d0 fs/hfsplus/xattr.c:590 hfsplus_security_getxattr+0x4f/0x60 fs/hfsplus/xattr_security.c:20 __vfs_getxattr+0x699/0x6f0 fs/xattr.c:407 cap_inode_need_killpriv+0x52/0xb0 security/commoncap.c:301 security_inode_need_killpriv+0x8f/0x140 security/security.c:1422 dentry_needs_remove_privs+0x1b4/0x3f0 fs/inode.c:1995 do_truncate+0x11f/0x2d0 fs/open.c:57 handle_truncate fs/namei.c:3216 [inline] do_open fs/namei.c:3561 [inline] path_openat+0x4cf7/0x5600 fs/namei.c:3713 do_filp_open+0x249/0x660 fs/namei.c:3740 do_sys_openat2+0x1f0/0x910 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_creat fs/open.c:1402 [inline] __se_sys_creat fs/open.c:1396 [inline] __ia32_sys_creat+0xed/0x160 fs/open.c:1396 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 CPU: 0 PID: 3846 Comm: syz-executor.3 Not tainted 6.1.0-rc6-syzkaller-63555-ga472f15b3d1e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 ===================================================== --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
