loop5: detected capacity change from 0 to 14901
jfs_mount: diMount failed w/rc = -5
==================================================================
BUG: KASAN: use-after-free in diFree+0x1fbb/0x2fb0 fs/jfs/jfs_imap.c:871
Read of size 4 at addr ffff888023800004 by task syz-executor.5/27345

CPU: 0 PID: 27345 Comm: syz-executor.5 Not tainted 6.4.0-rc5-syzkaller-00305-g022ce8862dff #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:351 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:462
 kasan_report+0x176/0x1b0 mm/kasan/report.c:572
 diFree+0x1fbb/0x2fb0 fs/jfs/jfs_imap.c:871
 jfs_evict_inode+0x32d/0x440 fs/jfs/inode.c:156
 evict+0x2a4/0x620 fs/inode.c:665
 jfs_mount+0x536/0x830 fs/jfs/jfs_mount.c:203
 jfs_fill_super+0x59c/0xc50 fs/jfs/super.c:556
 mount_bdev+0x2d0/0x3f0 fs/super.c:1380
 legacy_get_tree+0xef/0x190 fs/fs_context.c:610
 vfs_get_tree+0x8c/0x270 fs/super.c:1510
 do_new_mount+0x28f/0xae0 fs/namespace.c:3039
 do_mount fs/namespace.c:3382 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3568
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fab0c48d69a
Code: 48 c7 c2 b8 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fab0d20cf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000002358 RCX: 00007fab0c48d69a
RDX: 0000000020005d00 RSI: 0000000020000000 RDI: 00007fab0d20cfe0
RBP: 00007fab0d20d020 R08: 00007fab0d20d020 R09: 0000000000000004
R10: 0000000000000004 R11: 0000000000000202 R12: 0000000020005d00
R13: 0000000020000000 R14: 00007fab0d20cfe0 R15: 0000000020004300
 </TASK>

The buggy address belongs to the physical page:
page:ffffea00008e0000 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x23800
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 ffffea0000fd0a08 ffffea0000deca08 0000000000000000
raw: 0000000000000000 0000000000070000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 20127, tgid 20127 (udevd), ts 2071900447363, free_ts 2106483480920
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1731
 prep_new_page mm/page_alloc.c:1738 [inline]
 get_page_from_freelist+0x321c/0x33a0 mm/page_alloc.c:3502
 __alloc_pages+0x255/0x670 mm/page_alloc.c:4768
 alloc_slab_page+0x6a/0x160 mm/slub.c:1851
 allocate_slab mm/slub.c:1998 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2051
 ___slab_alloc+0xa85/0x10a0 mm/slub.c:3192
 __slab_alloc mm/slub.c:3291 [inline]
 __slab_alloc_node mm/slub.c:3344 [inline]
 slab_alloc_node mm/slub.c:3441 [inline]
 slab_alloc mm/slub.c:3459 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3466 [inline]
 kmem_cache_alloc+0x1b9/0x2e0 mm/slub.c:3475
 getname_flags+0xbc/0x4e0 fs/namei.c:140
 vfs_fstatat fs/stat.c:275 [inline]
 __do_sys_newfstatat fs/stat.c:446 [inline]
 __se_sys_newfstatat fs/stat.c:440 [inline]
 __x64_sys_newfstatat+0x12e/0x1d0 fs/stat.c:440
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1302 [inline]
 free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2564
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2659
 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292
 __kasan_kmalloc_large+0x1c/0xa0 mm/kasan/common.c:394
 kasan_kmalloc_large include/linux/kasan.h:206 [inline]
 __kmalloc_large_node+0x13f/0x1d0 mm/slab_common.c:1114
 kmalloc_large+0x20/0x100 mm/slab_common.c:1124
 kmalloc include/linux/slab.h:556 [inline]
 diMount+0x29/0x870 fs/jfs/jfs_imap.c:105
 jfs_mount+0x40e/0x830 fs/jfs/jfs_mount.c:179
 jfs_fill_super+0x59c/0xc50 fs/jfs/super.c:556
 mount_bdev+0x2d0/0x3f0 fs/super.c:1380
 legacy_get_tree+0xef/0x190 fs/fs_context.c:610
 vfs_get_tree+0x8c/0x270 fs/super.c:1510
 do_new_mount+0x28f/0xae0 fs/namespace.c:3039
 do_mount fs/namespace.c:3382 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3568
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80

Memory state around the buggy address:
 ffff8880237fff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880237fff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888023800000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff888023800080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888023800100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================