loop2: detected capacity change from 0 to 32768
==================================================================
BUG: KASAN: slab-out-of-bounds in reiserfs_xattr_get+0xe6/0x570 fs/reiserfs/xattr.c:674
Read of size 8 at addr ffff88807c602798 by task syz-executor.2/17266

CPU: 0 PID: 17266 Comm: syz-executor.2 Not tainted 6.2.0-syzkaller-12485-gf3a2439f20d9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
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+0x143/0x170 mm/kasan/report.c:536
 reiserfs_xattr_get+0xe6/0x570 fs/reiserfs/xattr.c:674
 reiserfs_get_acl+0x7e/0x650 fs/reiserfs/xattr_acl.c:215
 __get_acl+0x288/0x470 fs/posix_acl.c:160
 check_acl+0x3a/0x150 fs/namei.c:307
 acl_permission_check fs/namei.c:352 [inline]
 generic_permission+0x362/0x550 fs/namei.c:405
 do_inode_permission fs/namei.c:459 [inline]
 inode_permission+0x233/0x460 fs/namei.c:526
 may_open+0x2d6/0x440 fs/namei.c:3188
 do_open fs/namei.c:3558 [inline]
 path_openat+0x2652/0x3170 fs/namei.c:3715
 do_filp_open+0x234/0x490 fs/namei.c:3742
 do_sys_openat2+0x13f/0x500 fs/open.c:1312
 do_sys_open fs/open.c:1328 [inline]
 __do_sys_openat fs/open.c:1344 [inline]
 __se_sys_openat fs/open.c:1339 [inline]
 __x64_sys_openat+0x247/0x290 fs/open.c:1339
 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: 0033:0x7ffb4663e284
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44
RSP: 002b:00007ffb47327f10 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000005d21 RCX: 00007ffb4663e284
RDX: 0000000000010000 RSI: 0000000020005d40 RDI: 00000000ffffff9c
RBP: 0000000020005d40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000010000
R13: 0000000020005d40 R14: 00007ffb47327fe0 R15: 0000000020000480
 </TASK>

Allocated by task 5202:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:383
 kmalloc include/linux/slab.h:580 [inline]
 kzalloc include/linux/slab.h:720 [inline]
 smk_fetch+0x92/0x140 security/smack/smack_lsm.c:291
 smack_d_instantiate+0x868/0xb40 security/smack/smack_lsm.c:3528
 security_d_instantiate+0x9b/0xf0 security/security.c:2139
 d_instantiate+0x55/0x90 fs/dcache.c:2034
 shmem_mknod+0x17d/0x1c0 mm/shmem.c:2945
 lookup_open fs/namei.c:3416 [inline]
 open_last_lookups fs/namei.c:3484 [inline]
 path_openat+0x13df/0x3170 fs/namei.c:3712
 do_filp_open+0x234/0x490 fs/namei.c:3742
 do_sys_openat2+0x13f/0x500 fs/open.c:1312
 do_sys_open fs/open.c:1328 [inline]
 __do_sys_openat fs/open.c:1344 [inline]
 __se_sys_openat fs/open.c:1339 [inline]
 __x64_sys_openat+0x247/0x290 fs/open.c:1339
 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 5202:
 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+0x264/0x3c0 mm/slub.c:3800
 smk_fetch+0x109/0x140 security/smack/smack_lsm.c:303
 smack_d_instantiate+0x868/0xb40 security/smack/smack_lsm.c:3528
 security_d_instantiate+0x9b/0xf0 security/security.c:2139
 d_instantiate+0x55/0x90 fs/dcache.c:2034
 shmem_mknod+0x17d/0x1c0 mm/shmem.c:2945
 lookup_open fs/namei.c:3416 [inline]
 open_last_lookups fs/namei.c:3484 [inline]
 path_openat+0x13df/0x3170 fs/namei.c:3712
 do_filp_open+0x234/0x490 fs/namei.c:3742
 do_sys_openat2+0x13f/0x500 fs/open.c:1312
 do_sys_open fs/open.c:1328 [inline]
 __do_sys_openat fs/open.c:1344 [inline]
 __se_sys_openat fs/open.c:1339 [inline]
 __x64_sys_openat+0x247/0x290 fs/open.c:1339
 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 ffff88807c602600
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 152 bytes to the right of
 allocated 256-byte region [ffff88807c602600, ffff88807c602700)

The buggy address belongs to the physical page:
page:ffffea0001f18080 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7c602
head:ffffea0001f18080 order:1 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffff888012441b40 dead000000000100 dead000000000122
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0x1d2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 5202, tgid 5202 (udevd), ts 194300673868, free_ts 194262367982
 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]
 __kmem_cache_alloc_node+0x1b8/0x2a0 mm/slub.c:3491
 kmalloc_trace+0x2a/0x60 mm/slab_common.c:1061
 kmalloc include/linux/slab.h:580 [inline]
 kzalloc include/linux/slab.h:720 [inline]
 smk_fetch+0x92/0x140 security/smack/smack_lsm.c:291
 smack_d_instantiate+0x6d9/0xb40 security/smack/smack_lsm.c:3491
 security_d_instantiate+0x9b/0xf0 security/security.c:2139
 d_instantiate+0x55/0x90 fs/dcache.c:2034
 shmem_mknod+0x17d/0x1c0 mm/shmem.c:2945
 lookup_open fs/namei.c:3416 [inline]
 open_last_lookups fs/namei.c:3484 [inline]
 path_openat+0x13df/0x3170 fs/namei.c:3712
 do_filp_open+0x234/0x490 fs/namei.c:3742
 do_sys_openat2+0x13f/0x500 fs/open.c:1312
 do_sys_open fs/open.c:1328 [inline]
 __do_sys_openat fs/open.c:1344 [inline]
 __se_sys_openat fs/open.c:1339 [inline]
 __x64_sys_openat+0x247/0x290 fs/open.c:1339
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
 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x15a/0x170 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]
 __kmem_cache_alloc_node+0x14c/0x2a0 mm/slub.c:3491
 __do_kmalloc_node mm/slab_common.c:966 [inline]
 __kmalloc_node+0xa2/0x190 mm/slab_common.c:974
 kmalloc_node include/linux/slab.h:610 [inline]
 kvmalloc_node+0x72/0x180 mm/util.c:603
 kvmalloc include/linux/slab.h:737 [inline]
 seq_buf_alloc fs/seq_file.c:38 [inline]
 seq_read_iter+0x202/0xd10 fs/seq_file.c:210
 call_read_iter include/linux/fs.h:1845 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x7e2/0xbe0 fs/read_write.c:470
 ksys_read+0x1a0/0x2c0 fs/read_write.c:613
 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

Memory state around the buggy address:
 ffff88807c602680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807c602700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88807c602780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                            ^
 ffff88807c602800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807c602880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================