REISERFS warning (device loop1): sh-2022 reiserfs_fill_super: unable to initialize journal space REISERFS warning (device loop3): sh-459 journal_init: unable to read journal header REISERFS (device loop0): checking transaction log (loop0) REISERFS (device loop0): Using rupasov hash to sort names ================================================================== BUG: KASAN: use-after-free in bin_search_in_dir_item fs/reiserfs/namei.c:40 [inline] BUG: KASAN: use-after-free in search_by_entry_key+0xcda/0xf30 fs/reiserfs/namei.c:164 Read of size 4 at addr ffff88807022b004 by task syz-executor.0/29189 CPU: 1 PID: 29189 Comm: syz-executor.0 Not tainted 4.19.180-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+0x1fc/0x2ef lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 kasan_report mm/kasan/report.c:412 [inline] __asan_report_load_n_noabort+0x8b/0xa0 mm/kasan/report.c:443 bin_search_in_dir_item fs/reiserfs/namei.c:40 [inline] search_by_entry_key+0xcda/0xf30 fs/reiserfs/namei.c:164 reiserfs_find_entry.part.0+0x142/0x1480 fs/reiserfs/namei.c:321 reiserfs_find_entry fs/reiserfs/namei.c:367 [inline] reiserfs_lookup+0x24a/0x490 fs/reiserfs/namei.c:367 __lookup_slow+0x246/0x4a0 fs/namei.c:1672 lookup_one_len+0x163/0x190 fs/namei.c:2544 reiserfs_lookup_privroot+0x92/0x280 fs/reiserfs/xattr.c:970 reiserfs_fill_super+0x13ea/0x2cf0 fs/reiserfs/super.c:2197 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x113c/0x2f10 fs/namespace.c:2799 ksys_mount+0xcf/0x130 fs/namespace.c:3015 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3026 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x46748a Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3dbcee1fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000040 RCX: 000000000046748a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f3dbcee2000 RBP: 00007f3dbcee2040 R08: 00007f3dbcee2040 R09: 0000000020000000 R10: 0000000000208403 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f3dbcee2000 R15: 0000000020011500 The buggy address belongs to the page: page:ffffea0001c08ac0 count:0 mapcount:0 mapping:0000000000000000 index:0x1 flags: 0xfff00000000000() raw: 00fff00000000000 ffffea0001da4608 ffff8880ba12ea08 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88807022af00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88807022af80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88807022b000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88807022b080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88807022b100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================