reiserfs: using flush barriers REISERFS (device loop0): journal params: device loop0, size 15748, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 REISERFS (device loop0): checking transaction log (loop0) REISERFS (device loop0): Using tea hash to sort names ================================================================== BUG: KASAN: out-of-bounds in memmove syzkaller/managers/linux-4-19/kernel/./include/linux/string.h:388 [inline] BUG: KASAN: out-of-bounds in leaf_paste_entries+0x449/0x910 syzkaller/managers/linux-4-19/kernel/fs/reiserfs/lbalance.c:1378 Read of size 18446744073709551584 at addr ffff88808406efa4 by task syz-executor759/8069 CPU: 1 PID: 8069 Comm: syz-executor759 Not tainted 4.19.172-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack syzkaller/managers/linux-4-19/kernel/lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef syzkaller/managers/linux-4-19/kernel/lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 syzkaller/managers/linux-4-19/kernel/mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 syzkaller/managers/linux-4-19/kernel/mm/kasan/report.c:354 kasan_report+0x8f/0xa0 syzkaller/managers/linux-4-19/kernel/mm/kasan/report.c:412 memmove+0x20/0x50 syzkaller/managers/linux-4-19/kernel/mm/kasan/kasan.c:293 memmove syzkaller/managers/linux-4-19/kernel/./include/linux/string.h:388 [inline] leaf_paste_entries+0x449/0x910 syzkaller/managers/linux-4-19/kernel/fs/reiserfs/lbalance.c:1378 balance_leaf_finish_node_paste_dirent syzkaller/managers/linux-4-19/kernel/fs/reiserfs/do_balan.c:1306 [inline] balance_leaf_finish_node_paste syzkaller/managers/linux-4-19/kernel/fs/reiserfs/do_balan.c:1332 [inline] balance_leaf_finish_node syzkaller/managers/linux-4-19/kernel/fs/reiserfs/do_balan.c:1375 [inline] balance_leaf+0x8fd7/0xca70 syzkaller/managers/linux-4-19/kernel/fs/reiserfs/do_balan.c:1463 do_balance+0x30a/0x760 syzkaller/managers/linux-4-19/kernel/fs/reiserfs/do_balan.c:1899 reiserfs_paste_into_item+0x636/0x7d0 syzkaller/managers/linux-4-19/kernel/fs/reiserfs/stree.c:2148 reiserfs_add_entry+0x89a/0xcc0 syzkaller/managers/linux-4-19/kernel/fs/reiserfs/namei.c:566 reiserfs_mkdir+0x66e/0x980 syzkaller/managers/linux-4-19/kernel/fs/reiserfs/namei.c:858 create_privroot syzkaller/managers/linux-4-19/kernel/fs/reiserfs/xattr.c:880 [inline] reiserfs_xattr_init+0x406/0xae0 syzkaller/managers/linux-4-19/kernel/fs/reiserfs/xattr.c:1002 reiserfs_fill_super+0x206e/0x2cf0 syzkaller/managers/linux-4-19/kernel/fs/reiserfs/super.c:2180 mount_bdev+0x2fc/0x3b0 syzkaller/managers/linux-4-19/kernel/fs/super.c:1158 mount_fs+0xa3/0x310 syzkaller/managers/linux-4-19/kernel/fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 syzkaller/managers/linux-4-19/kernel/fs/namespace.c:961 vfs_kern_mount syzkaller/managers/linux-4-19/kernel/fs/namespace.c:951 [inline] do_new_mount syzkaller/managers/linux-4-19/kernel/fs/namespace.c:2469 [inline] do_mount+0x113c/0x2f10 syzkaller/managers/linux-4-19/kernel/fs/namespace.c:2799 ksys_mount+0xcf/0x130 syzkaller/managers/linux-4-19/kernel/fs/namespace.c:3015 __do_sys_mount syzkaller/managers/linux-4-19/kernel/fs/namespace.c:3029 [inline] __se_sys_mount syzkaller/managers/linux-4-19/kernel/fs/namespace.c:3026 [inline] __x64_sys_mount+0xba/0x150 syzkaller/managers/linux-4-19/kernel/fs/namespace.c:3026 do_syscall_64+0xf9/0x620 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x445b8a Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff981928a8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fff98192900 RCX: 0000000000445b8a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff981928c0 RBP: 00007fff981928c0 R08: 00007fff98192900 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000286 R12: 00000000200002a8 R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000007 The buggy address belongs to the page: page:ffffea0002101b80 count:3 mapcount:0 mapping:ffff8880ade01520 index:0x3d97 flags: 0xfff00000001044(referenced|active|private) raw: 00fff00000001044 dead000000000100 dead000000000200 ffff8880ade01520 raw: 0000000000003d97 ffff88808a60e540 00000003ffffffff ffff88823b2d08c0 page dumped because: kasan: bad access detected page->mem_cgroup:ffff88823b2d08c0 Memory state around the buggy address: ffff88808406ee80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88808406ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88808406ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88808406f000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88808406f080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================