ffff88806d5849f0: e8 49 58 6d 80 88 ff ff 00 00 00 00 00 00 00 00  .IXm............
ffff88806d584a00: 00 4a 58 6d 80 88 ff ff 00 4a 58 6d 80 88 ff ff  .JXm.....JXm....
ffff88806d584a10: 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00  ................
ffff88806d584a20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
ffff88806d584a30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
==================================================================
BUG: KASAN: slab-out-of-bounds in hex_dump_to_buffer+0xdea/0xe30 lib/hexdump.c:193
Read of size 1 at addr ffff88806d584a40 by task syz-executor.0/5455

CPU: 0 PID: 5455 Comm: syz-executor.0 Not tainted 6.5.0-syzkaller-12728-ga48fa7efaf11 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 hex_dump_to_buffer+0xdea/0xe30 lib/hexdump.c:193
 print_hex_dump+0x18c/0x260 lib/hexdump.c:276
 ea_get+0x860/0x12c0 fs/jfs/xattr.c:561
 __jfs_getxattr+0xfd/0x3e0 fs/jfs/xattr.c:807
 jfs_xattr_get+0x3c/0x50 fs/jfs/xattr.c:931
 __vfs_getxattr+0x13b/0x1a0 fs/xattr.c:424
 inode_doinit_use_xattr+0xb5/0x410 security/selinux/hooks.c:1359
 inode_doinit_with_dentry+0x51f/0x12c0 security/selinux/hooks.c:1484
 selinux_d_instantiate+0x26/0x30 security/selinux/hooks.c:6278
 security_d_instantiate+0x54/0xe0 security/security.c:3799
 d_splice_alias+0x94/0xdf0 fs/dcache.c:3145
 jfs_lookup+0x233/0x370 fs/jfs/namei.c:1472
 lookup_open.isra.0+0x8dc/0x1360 fs/namei.c:3473
 open_last_lookups fs/namei.c:3563 [inline]
 path_openat+0x931/0x29c0 fs/namei.c:3793
 do_filp_open+0x1de/0x430 fs/namei.c:3823
 do_sys_openat2+0x176/0x1e0 fs/open.c:1422
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_open fs/open.c:1445 [inline]
 __se_sys_open fs/open.c:1441 [inline]
 __x64_sys_open+0x154/0x1e0 fs/open.c:1441
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc7e0c7ad39
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007fc7e1e950c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fc7e0d9bf80 RCX: 00007fc7e0c7ad39
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000340
RBP: 00007fc7e0cd7567 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fc7e0d9bf80 R15: 00007fff6bab7ba8
 </TASK>

Allocated by task 5455:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook mm/slab.h:762 [inline]
 slab_alloc_node mm/slab.c:3237 [inline]
 slab_alloc mm/slab.c:3246 [inline]
 __kmem_cache_alloc_lru mm/slab.c:3423 [inline]
 kmem_cache_alloc_lru+0x1ff/0x680 mm/slab.c:3439
 alloc_inode_sb include/linux/fs.h:2909 [inline]
 jfs_alloc_inode+0x25/0x60 fs/jfs/super.c:105
 alloc_inode+0x5d/0x220 fs/inode.c:259
 iget_locked+0x1b3/0x700 fs/inode.c:1314
 jfs_iget+0x1e/0x4c0 fs/jfs/inode.c:29
 jfs_lookup+0x2a4/0x370 fs/jfs/namei.c:1467
 lookup_open.isra.0+0x8dc/0x1360 fs/namei.c:3473
 open_last_lookups fs/namei.c:3563 [inline]
 path_openat+0x931/0x29c0 fs/namei.c:3793
 do_filp_open+0x1de/0x430 fs/namei.c:3823
 do_sys_openat2+0x176/0x1e0 fs/open.c:1422
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_open fs/open.c:1445 [inline]
 __se_sys_open fs/open.c:1441 [inline]
 __x64_sys_open+0x154/0x1e0 fs/open.c:1441
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88806d584180
 which belongs to the cache jfs_ip of size 2240
The buggy address is located 0 bytes to the right of
 allocated 2240-byte region [ffff88806d584180, ffff88806d584a40)

The buggy address belongs to the physical page:
page:ffffea0001b56100 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88806d584fff pfn:0x6d584
memcg:ffff88807b57d401
flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0x1()
raw: 00fff00000000800 ffff8880153beb00 ffffea0001b560d0 ffff8880153eaf50
raw: ffff88806d584fff ffff88806d584180 0000000100000001 ffff88807b57d401
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x342050(__GFP_IO|__GFP_NOWARN|__GFP_COMP|__GFP_HARDWALL|__GFP_THISNODE|__GFP_RECLAIMABLE), pid 5455, tgid 5454 (syz-executor.0), ts 111477349663, free_ts 81678508955
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1536
 prep_new_page mm/page_alloc.c:1543 [inline]
 get_page_from_freelist+0xee0/0x2f20 mm/page_alloc.c:3170
 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4426
 __alloc_pages_node include/linux/gfp.h:237 [inline]
 kmem_getpages mm/slab.c:1356 [inline]
 cache_grow_begin+0x99/0x3a0 mm/slab.c:2550
 cache_alloc_refill+0x294/0x3a0 mm/slab.c:2923
 ____cache_alloc mm/slab.c:2999 [inline]
 ____cache_alloc mm/slab.c:2982 [inline]
 __do_cache_alloc mm/slab.c:3182 [inline]
 slab_alloc_node mm/slab.c:3230 [inline]
 slab_alloc mm/slab.c:3246 [inline]
 __kmem_cache_alloc_lru mm/slab.c:3423 [inline]
 kmem_cache_alloc_lru+0x56c/0x680 mm/slab.c:3439
 alloc_inode_sb include/linux/fs.h:2909 [inline]
 jfs_alloc_inode+0x25/0x60 fs/jfs/super.c:105
 alloc_inode+0x5d/0x220 fs/inode.c:259
 iget_locked+0x1b3/0x700 fs/inode.c:1314
 jfs_iget+0x1e/0x4c0 fs/jfs/inode.c:29
 jfs_lookup+0x2a4/0x370 fs/jfs/namei.c:1467
 lookup_open.isra.0+0x8dc/0x1360 fs/namei.c:3473
 open_last_lookups fs/namei.c:3563 [inline]
 path_openat+0x931/0x29c0 fs/namei.c:3793
 do_filp_open+0x1de/0x430 fs/namei.c:3823
 do_sys_openat2+0x176/0x1e0 fs/open.c:1422
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_open fs/open.c:1445 [inline]
 __se_sys_open fs/open.c:1441 [inline]
 __x64_sys_open+0x154/0x1e0 fs/open.c:1441
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1136 [inline]
 free_unref_page_prepare+0x476/0xa40 mm/page_alloc.c:2312
 free_unref_page_list+0xe6/0xb30 mm/page_alloc.c:2451
 release_pages+0x32a/0x14e0 mm/swap.c:1042
 tlb_batch_pages_flush+0x9a/0x190 mm/mmu_gather.c:98
 zap_pte_range mm/memory.c:1534 [inline]
 zap_pmd_range mm/memory.c:1573 [inline]
 zap_pud_range mm/memory.c:1602 [inline]
 zap_p4d_range mm/memory.c:1623 [inline]
 unmap_page_range+0x19b7/0x2c10 mm/memory.c:1644
 unmap_single_vma+0x194/0x2b0 mm/memory.c:1690
 unmap_vmas+0x1e8/0x330 mm/memory.c:1731
 exit_mmap+0x1ad/0xa60 mm/mmap.c:3210
 __mmput+0x12a/0x4d0 kernel/fork.c:1349
 mmput+0x62/0x70 kernel/fork.c:1371
 exit_mm kernel/exit.c:567 [inline]
 do_exit+0x9b4/0x2a20 kernel/exit.c:861
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
 __do_sys_exit_group kernel/exit.c:1035 [inline]
 __se_sys_exit_group kernel/exit.c:1033 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff88806d584900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88806d584980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88806d584a00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
                                           ^
 ffff88806d584a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88806d584b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================