jfs_mount: diMount failed w/rc = -5 ================================================================== BUG: KASAN: use-after-free in diFree+0x17ac/0x2648 fs/jfs/jfs_imap.c:871 Read of size 4 at addr ffff0000c72b0004 by task syz-executor.3/10082 CPU: 1 PID: 10082 Comm: syz-executor.3 Not tainted 6.1.24-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 __asan_report_load4_noabort+0x2c/0x38 mm/kasan/report_generic.c:350 diFree+0x17ac/0x2648 fs/jfs/jfs_imap.c:871 jfs_evict_inode+0x2d0/0x3f4 fs/jfs/inode.c:156 evict+0x260/0x68c fs/inode.c:664 iput_final fs/inode.c:1747 [inline] iput+0x7c0/0x8a4 fs/inode.c:1773 diFreeSpecial+0x78/0x108 fs/jfs/jfs_imap.c:548 jfs_mount+0x53c/0x7a4 fs/jfs/jfs_mount.c:203 jfs_fill_super+0x464/0x9f0 fs/jfs/super.c:556 mount_bdev+0x26c/0x368 fs/super.c:1423 jfs_do_mount+0x44/0x58 fs/jfs/super.c:670 legacy_get_tree+0xd4/0x16c fs/fs_context.c:610 vfs_get_tree+0x90/0x274 fs/super.c:1553 do_new_mount+0x25c/0x8c8 fs/namespace.c:3040 path_mount+0x590/0xe58 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 The buggy address belongs to the physical page: page:000000009770db67 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1072b0 flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000000 fffffc00049e0e08 fffffc0004a86408 0000000000000000 raw: 0000000000000000 0000000000040000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000c72aff00: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000c72aff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000c72b0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff0000c72b0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff0000c72b0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== imap: 0000000086cd690d: d6d36b40 ffff0000 0000078b 048a032f imap: 00000000dc473e99: 00008000 11640000 00c0376a 33c60102 ERROR: (device loop3): diFree: inum = 2, iagno = 0, nextiag = -65536 ERROR: (device loop3): remounting filesystem as read-only Mount JFS Failure: -5 jfs_mount failed w/return code = -5