loop3: detected capacity change from 0 to 14901
read_mapping_page failed!
jfs_mount: diMount failed w/rc = -5
==================================================================
BUG: KASAN: slab-use-after-free in diFree+0x1fbb/0x2fb0 fs/jfs/jfs_imap.c:871
Read of size 4 at addr ffff88807afb0004 by task syz-executor.3/31132

CPU: 1 PID: 31132 Comm: syz-executor.3 Not tainted 6.2.0-syzkaller-13534-gb01fe98d34f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
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:319 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:430
 kasan_report+0x176/0x1b0 mm/kasan/report.c:536
 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+0x271/0x3a0 fs/super.c:1371
 legacy_get_tree+0xef/0x190 fs/fs_context.c:610
 vfs_get_tree+0x8c/0x270 fs/super.c:1501
 do_new_mount+0x28f/0xae0 fs/namespace.c:3042
 do_mount fs/namespace.c:3385 [inline]
 __do_sys_mount fs/namespace.c:3594 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3571
 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: 0033:0x7f2b9dc8d62a
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:00007f2b9c7fdf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000002340 RCX: 00007f2b9dc8d62a
RDX: 0000000020005d00 RSI: 0000000020000000 RDI: 00007f2b9c7fdfe0
RBP: 00007f2b9c7fe020 R08: 00007f2b9c7fe020 R09: 0000000000000010
R10: 0000000000000010 R11: 0000000000000202 R12: 0000000020005d00
R13: 0000000020000000 R14: 00007f2b9c7fdfe0 R15: 0000000020000240
 </TASK>

Allocated by task 4434:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 __kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:769
 slab_alloc_node mm/slub.c:3452 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x12c/0x280 mm/slub.c:3476
 getname_flags+0xbc/0x4e0 fs/namei.c:140
 user_path_at_empty+0x2e/0x180 fs/namei.c:2876
 do_readlinkat+0x118/0x3b0 fs/stat.c:477
 __do_sys_readlink fs/stat.c:510 [inline]
 __se_sys_readlink fs/stat.c:507 [inline]
 __x64_sys_readlink+0x7f/0x90 fs/stat.c:507
 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

Freed by task 4434:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:521
 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:162 [inline]
 slab_free_hook mm/slub.c:1781 [inline]
 slab_free_freelist_hook mm/slub.c:1807 [inline]
 slab_free mm/slub.c:3787 [inline]
 kmem_cache_free+0x2be/0x590 mm/slub.c:3809
 putname fs/namei.c:272 [inline]
 user_path_at_empty+0x12f/0x180 fs/namei.c:2879
 do_readlinkat+0x118/0x3b0 fs/stat.c:477
 __do_sys_readlink fs/stat.c:510 [inline]
 __se_sys_readlink fs/stat.c:507 [inline]
 __x64_sys_readlink+0x7f/0x90 fs/stat.c:507
 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

The buggy address belongs to the object at ffff88807afb0000
 which belongs to the cache names_cache of size 4096
The buggy address is located 4 bytes inside of
 freed 4096-byte region [ffff88807afb0000, ffff88807afb1000)

The buggy address belongs to the physical page:
page:ffffea0001ebec00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7afb0
head:ffffea0001ebec00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffff888140008780 ffffea0000c8b800 dead000000000002
raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
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 4434, tgid 4434 (udevd), ts 1638428242272, free_ts 1637996767279
 prep_new_page mm/page_alloc.c:2552 [inline]
 get_page_from_freelist+0x37e0/0x3970 mm/page_alloc.c:4325
 __alloc_pages+0x291/0x7f0 mm/page_alloc.c:5591
 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:3193
 __slab_alloc mm/slub.c:3292 [inline]
 __slab_alloc_node mm/slub.c:3345 [inline]
 slab_alloc_node mm/slub.c:3442 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x1b0/0x280 mm/slub.c:3476
 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:1453 [inline]
 free_pcp_prepare mm/page_alloc.c:1503 [inline]
 free_unref_page_prepare+0xf0e/0xf70 mm/page_alloc.c:3387
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:3482
 discard_slab mm/slub.c:2098 [inline]
 __unfreeze_partials+0x1b1/0x1f0 mm/slub.c:2637
 put_cpu_partial+0x116/0x180 mm/slub.c:2713
 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:769
 slab_alloc_node mm/slub.c:3452 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x12c/0x280 mm/slub.c:3476
 ptlock_alloc+0x20/0x70 mm/memory.c:5821
 ptlock_init include/linux/mm.h:2620 [inline]
 pgtable_pte_page_ctor include/linux/mm.h:2647 [inline]
 __pte_alloc_one include/asm-generic/pgalloc.h:66 [inline]
 pte_alloc_one+0xd5/0x360 arch/x86/mm/pgtable.c:33
 __pte_alloc+0x79/0x220 mm/memory.c:421
 do_anonymous_page mm/memory.c:4020 [inline]
 handle_pte_fault mm/memory.c:4907 [inline]
 __handle_mm_fault mm/memory.c:5051 [inline]
 handle_mm_fault+0x47c9/0x51c0 mm/memory.c:5197
 do_user_addr_fault arch/x86/mm/fault.c:1407 [inline]
 handle_page_fault arch/x86/mm/fault.c:1498 [inline]
 exc_page_fault+0x685/0x8a0 arch/x86/mm/fault.c:1554
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570

Memory state around the buggy address:
 ffff88807afaff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88807afaff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88807afb0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff88807afb0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807afb0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================