loop2: detected capacity change from 0 to 32768
==================================================================
BUG: KASAN: slab-out-of-bounds in dtCompare fs/jfs/jfs_dtree.c:3315 [inline]
BUG: KASAN: slab-out-of-bounds in dtSearch+0x1664/0x2520 fs/jfs/jfs_dtree.c:649
Read of size 1 at addr ffff88805f01c058 by task syz-executor.2/5488

CPU: 0 PID: 5488 Comm: syz-executor.2 Not tainted 6.9.0-syzkaller-05151-g1b294a1f3561 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 dtCompare fs/jfs/jfs_dtree.c:3315 [inline]
 dtSearch+0x1664/0x2520 fs/jfs/jfs_dtree.c:649
 jfs_lookup+0x17f/0x410 fs/jfs/namei.c:1461
 lookup_open fs/namei.c:3483 [inline]
 open_last_lookups fs/namei.c:3574 [inline]
 path_openat+0x1033/0x3240 fs/namei.c:3804
 do_filp_open+0x235/0x490 fs/namei.c:3834
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
 do_sys_open fs/open.c:1421 [inline]
 __do_sys_open fs/open.c:1429 [inline]
 __se_sys_open fs/open.c:1425 [inline]
 __x64_sys_open+0x225/0x270 fs/open.c:1425
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc276e7cee9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc277c660c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fc276fabf80 RCX: 00007fc276e7cee9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000209e1000
RBP: 00007fc276ec949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fc276fabf80 R15: 00007fff8def74d8
 </TASK>

Allocated by task 5488:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3871 [inline]
 slab_alloc_node mm/slub.c:3918 [inline]
 kmem_cache_alloc_lru+0x178/0x360 mm/slub.c:3937
 alloc_inode_sb include/linux/fs.h:3107 [inline]
 jfs_alloc_inode+0x28/0x70 fs/jfs/super.c:105
 alloc_inode fs/inode.c:261 [inline]
 new_inode_pseudo+0x69/0x1e0 fs/inode.c:1007
 new_inode+0x22/0x1d0 fs/inode.c:1033
 ialloc+0x4c/0x900 fs/jfs/jfs_inode.c:48
 jfs_create+0x1be/0xb90 fs/jfs/namei.c:92
 lookup_open fs/namei.c:3505 [inline]
 open_last_lookups fs/namei.c:3574 [inline]
 path_openat+0x1425/0x3240 fs/namei.c:3804
 do_filp_open+0x235/0x490 fs/namei.c:3834
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
 do_sys_open fs/open.c:1421 [inline]
 __do_sys_openat fs/open.c:1437 [inline]
 __se_sys_openat fs/open.c:1432 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1432
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88805f01b780
 which belongs to the cache jfs_ip of size 2240
The buggy address is located 24 bytes to the right of
 allocated 2240-byte region [ffff88805f01b780, ffff88805f01c040)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5f018
head: order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88806377ff01
flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888019fef640 dead000000000122 0000000000000000
raw: 0000000000000000 00000000800d000d 00000001ffffffff ffff88806377ff01
head: 00fff00000000840 ffff888019fef640 dead000000000122 0000000000000000
head: 0000000000000000 00000000800d000d 00000001ffffffff ffff88806377ff01
head: 00fff00000000003 ffffea00017c0601 dead000000000122 00000000ffffffff
head: 0000000800000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 5488, tgid 5487 (syz-executor.2), ts 84741642097, free_ts 80515728471
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1534
 prep_new_page mm/page_alloc.c:1541 [inline]
 get_page_from_freelist+0x3410/0x35b0 mm/page_alloc.c:3317
 __alloc_pages+0x256/0x6c0 mm/page_alloc.c:4575
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 alloc_slab_page+0x5f/0x160 mm/slub.c:2190
 allocate_slab mm/slub.c:2353 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2406
 ___slab_alloc+0xb07/0x12e0 mm/slub.c:3592
 __slab_alloc mm/slub.c:3682 [inline]
 __slab_alloc_node mm/slub.c:3735 [inline]
 slab_alloc_node mm/slub.c:3908 [inline]
 kmem_cache_alloc_lru+0x253/0x360 mm/slub.c:3937
 alloc_inode_sb include/linux/fs.h:3107 [inline]
 jfs_alloc_inode+0x28/0x70 fs/jfs/super.c:105
 alloc_inode fs/inode.c:261 [inline]
 new_inode_pseudo+0x69/0x1e0 fs/inode.c:1007
 new_inode+0x22/0x1d0 fs/inode.c:1033
 jfs_fill_super+0x408/0xc50 fs/jfs/super.c:544
 mount_bdev+0x20a/0x2d0 fs/super.c:1658
 legacy_get_tree+0xee/0x190 fs/fs_context.c:662
 vfs_get_tree+0x90/0x2a0 fs/super.c:1779
 do_new_mount+0x2be/0xb40 fs/namespace.c:3352
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
page last free pid 1096 tgid 1096 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1141 [inline]
 free_unref_page_prepare+0x97b/0xaa0 mm/page_alloc.c:2347
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2487
 __folio_put_large+0x168/0x1d0 mm/swap.c:132
 __folio_put+0x299/0x390 mm/swap.c:140
 io_pages_unmap+0x1d3/0x330 io_uring/memmap.c:111
 io_rings_free+0xcf/0x2b0 io_uring/io_uring.c:2564
 io_ring_ctx_free+0xc61/0xea0 io_uring/io_uring.c:2673
 io_ring_exit_work+0x80f/0x8a0 io_uring/io_uring.c:2885
 process_one_work kernel/workqueue.c:3267 [inline]
 process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3348
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3429
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff88805f01bf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88805f01bf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88805f01c000: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
                                                    ^
 ffff88805f01c080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88805f01c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================