REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop5): Using tea 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+0x45c/0xe88 fs/reiserfs/namei.c:165 Read of size 4 at addr ffff00010e684004 by task syz-executor.5/29466 CPU: 1 PID: 29466 Comm: syz-executor.5 Not tainted 6.6.0-rc4-syzkaller-g19af4a4ed414 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0x174/0x514 mm/kasan/report.c:475 kasan_report+0xd8/0x138 mm/kasan/report.c:588 __asan_report_load_n_noabort+0x1c/0x28 mm/kasan/report_generic.c:391 bin_search_in_dir_item fs/reiserfs/namei.c:40 [inline] search_by_entry_key+0x45c/0xe88 fs/reiserfs/namei.c:165 reiserfs_find_entry+0x288/0x149c fs/reiserfs/namei.c:322 reiserfs_lookup+0x17c/0x45c fs/reiserfs/namei.c:368 __lookup_slow+0x250/0x374 fs/namei.c:1693 lookup_one_len+0x178/0x28c fs/namei.c:2745 reiserfs_lookup_privroot+0x8c/0x184 fs/reiserfs/xattr.c:977 reiserfs_fill_super+0x1bc0/0x2028 fs/reiserfs/super.c:2174 mount_bdev+0x1e8/0x2b4 fs/super.c:1629 get_super_block+0x44/0x58 fs/reiserfs/super.c:2601 legacy_get_tree+0xd4/0x16c fs/fs_context.c:638 vfs_get_tree+0x90/0x288 fs/super.c:1750 do_new_mount+0x25c/0x8c8 fs/namespace.c:3335 path_mount+0x590/0xe04 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3861 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x58/0x16c arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 The buggy address belongs to the physical page: page:00000000c6b5b47d refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x14e684 flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 05ffc00000000000 fffffc000439a148 ffff0001b41f8b60 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff00010e683f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff00010e683f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff00010e684000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff00010e684080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff00010e684100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage.