===================================================== BUG: KMSAN: uninit-value in comp_keys fs/reiserfs/stree.c:83 [inline] BUG: KMSAN: uninit-value in bin_search fs/reiserfs/stree.c:173 [inline] BUG: KMSAN: uninit-value in search_by_key+0x2c57/0x60e0 fs/reiserfs/stree.c:743 CPU: 1 PID: 28395 Comm: syz-executor.4 Not tainted 5.9.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:122 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:219 comp_keys fs/reiserfs/stree.c:83 [inline] bin_search fs/reiserfs/stree.c:173 [inline] search_by_key+0x2c57/0x60e0 fs/reiserfs/stree.c:743 reiserfs_read_locked_inode+0x1fc/0x3260 fs/reiserfs/inode.c:1561 reiserfs_fill_super+0x2c00/0x6170 fs/reiserfs/super.c:2081 mount_bdev+0x622/0x910 fs/super.c:1417 get_super_block+0xc9/0xe0 fs/reiserfs/super.c:2606 legacy_get_tree+0x163/0x2e0 fs/fs_context.c:592 vfs_get_tree+0xd8/0x5d0 fs/super.c:1547 do_new_mount fs/namespace.c:2875 [inline] path_mount+0x3d1a/0x5d40 fs/namespace.c:3192 do_mount+0x1c6/0x220 fs/namespace.c:3205 __do_compat_sys_mount fs/compat.c:122 [inline] __se_compat_sys_mount+0x7b5/0xaa0 fs/compat.c:89 __ia32_compat_sys_mount+0x62/0x80 fs/compat.c:89 do_syscall_32_irqs_on arch/x86/entry/common.c:80 [inline] __do_fast_syscall_32+0x129/0x180 arch/x86/entry/common.c:139 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:162 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:205 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fea549 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f55e3f20 EFLAGS: 00000292 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00000000f55e3f7c RCX: 0000000020000100 RDX: 0000000020000000 RSI: 0000000000000000 RDI: 00000000f55e3fbc RBP: 00000000f55e3f7c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Local variable ----key@reiserfs_read_locked_inode created at: reiserfs_read_locked_inode+0xb4/0x3260 fs/reiserfs/inode.c:1544 reiserfs_read_locked_inode+0xb4/0x3260 fs/reiserfs/inode.c:1544 =====================================================