==================================================================
BUG: KASAN: use-after-free in reiserfs_xattr_get+0xe3/0x580 fs/reiserfs/xattr.c:674
Read of size 8 at addr ffff88807f8f3b18 by task syz-executor.5/28993

CPU: 1 PID: 28993 Comm: syz-executor.5 Not tainted 6.1.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description+0x74/0x340 mm/kasan/report.c:284
 print_report+0x107/0x220 mm/kasan/report.c:395
 kasan_report+0x139/0x170 mm/kasan/report.c:495
 reiserfs_xattr_get+0xe3/0x580 fs/reiserfs/xattr.c:674
 reiserfs_get_acl+0x7a/0x650 fs/reiserfs/xattr_acl.c:214
 get_acl+0x157/0x260 fs/posix_acl.c:153
 check_acl+0x35/0x150 fs/namei.c:306
 acl_permission_check fs/namei.c:351 [inline]
 generic_permission+0x388/0x4e0 fs/namei.c:404
 do_inode_permission fs/namei.c:458 [inline]
 inode_permission+0x22c/0x450 fs/namei.c:525
 may_open+0x2a4/0x400 fs/namei.c:3185
 do_open fs/namei.c:3555 [inline]
 path_openat+0x24b4/0x2e00 fs/namei.c:3713
 do_filp_open+0x275/0x500 fs/namei.c:3740
 do_sys_openat2+0x13b/0x500 fs/open.c:1310
 do_sys_open fs/open.c:1326 [inline]
 __do_sys_openat fs/open.c:1342 [inline]
 __se_sys_openat fs/open.c:1337 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1337
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f0f0f08c189
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0f0e3ff168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f0f0f1ac050 RCX: 00007f0f0f08c189
RDX: 0000000000000000 RSI: 0000000020004280 RDI: ffffffffffffff9c
RBP: 00007f0f0f0e7b01 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc0eebec1f R14: 00007f0f0e3ff300 R15: 0000000000022000
 </TASK>

Allocated by task 19056:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x70 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:371 [inline]
 __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:380
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slab_common.c:955 [inline]
 __kmalloc+0xaf/0x1a0 mm/slab_common.c:968
 kmalloc include/linux/slab.h:558 [inline]
 kzalloc include/linux/slab.h:689 [inline]
 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2470 [inline]
 cfg80211_inform_bss_frame_data+0x521/0x21a0 net/wireless/scan.c:2531
 ieee80211_bss_info_update+0x751/0xfe0 net/mac80211/scan.c:190
 ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x1973/0x2cd0 net/mac80211/ibss.c:1638
 ieee80211_iface_process_skb net/mac80211/iface.c:1630 [inline]
 ieee80211_iface_work+0x773/0xcf0 net/mac80211/iface.c:1684
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

Freed by task 27:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:511
 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1724 [inline]
 slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1750
 slab_free mm/slub.c:3661 [inline]
 kmem_cache_free_bulk+0x137/0x1a0 mm/slub.c:3779
 kfree_bulk include/linux/slab.h:465 [inline]
 kfree_rcu_work+0x35b/0x830 kernel/rcu/tree.c:3040
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

Last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:481
 kvfree_call_rcu+0x118/0x8c0 kernel/rcu/tree.c:3343
 cfg80211_update_known_bss+0x16a/0x9e0
 cfg80211_bss_update+0x175/0x20b0 net/wireless/scan.c:1729
 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2498 [inline]
 cfg80211_inform_bss_frame_data+0x9f5/0x21a0 net/wireless/scan.c:2531
 ieee80211_bss_info_update+0x751/0xfe0 net/mac80211/scan.c:190
 ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x1973/0x2cd0 net/mac80211/ibss.c:1638
 ieee80211_iface_process_skb net/mac80211/iface.c:1630 [inline]
 ieee80211_iface_work+0x773/0xcf0 net/mac80211/iface.c:1684
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

Second to last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:481
 kvfree_call_rcu+0x118/0x8c0 kernel/rcu/tree.c:3343
 cfg80211_update_known_bss+0x16a/0x9e0
 cfg80211_bss_update+0x175/0x20b0 net/wireless/scan.c:1729
 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2498 [inline]
 cfg80211_inform_bss_frame_data+0x9f5/0x21a0 net/wireless/scan.c:2531
 ieee80211_bss_info_update+0x751/0xfe0 net/mac80211/scan.c:190
 ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x1973/0x2cd0 net/mac80211/ibss.c:1638
 ieee80211_iface_process_skb net/mac80211/iface.c:1630 [inline]
 ieee80211_iface_work+0x773/0xcf0 net/mac80211/iface.c:1684
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

The buggy address belongs to the object at ffff88807f8f3b00
 which belongs to the cache kmalloc-96 of size 96
The buggy address is located 24 bytes inside of
 96-byte region [ffff88807f8f3b00, ffff88807f8f3b60)

The buggy address belongs to the physical page:
page:ffffea0001fe3cc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7f8f3
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 ffffea0001f5b600 dead000000000006 ffff888012841780
raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 4018, tgid 4018 (kworker/u4:7), ts 1533304532604, free_ts 1530003045204
 prep_new_page mm/page_alloc.c:2539 [inline]
 get_page_from_freelist+0x72b/0x7a0 mm/page_alloc.c:4288
 __alloc_pages+0x259/0x560 mm/page_alloc.c:5555
 alloc_slab_page+0x70/0xf0 mm/slub.c:1794
 allocate_slab+0x5e/0x4b0 mm/slub.c:1939
 new_slab mm/slub.c:1992 [inline]
 ___slab_alloc+0x7f4/0xeb0 mm/slub.c:3180
 __slab_alloc mm/slub.c:3279 [inline]
 slab_alloc_node mm/slub.c:3364 [inline]
 __kmem_cache_alloc_node+0x252/0x310 mm/slub.c:3437
 __do_kmalloc_node mm/slab_common.c:954 [inline]
 __kmalloc+0x9e/0x1a0 mm/slab_common.c:968
 kmalloc include/linux/slab.h:558 [inline]
 kzalloc include/linux/slab.h:689 [inline]
 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2470 [inline]
 cfg80211_inform_bss_frame_data+0x521/0x21a0 net/wireless/scan.c:2531
 ieee80211_bss_info_update+0x751/0xfe0 net/mac80211/scan.c:190
 ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x1973/0x2cd0 net/mac80211/ibss.c:1638
 ieee80211_iface_process_skb net/mac80211/iface.c:1630 [inline]
 ieee80211_iface_work+0x773/0xcf0 net/mac80211/iface.c:1684
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1459 [inline]
 free_pcp_prepare+0x80c/0x8f0 mm/page_alloc.c:1509
 free_unref_page_prepare mm/page_alloc.c:3387 [inline]
 free_unref_page+0x7d/0x630 mm/page_alloc.c:3483
 free_slab mm/slub.c:2031 [inline]
 discard_slab mm/slub.c:2037 [inline]
 __unfreeze_partials+0x1ab/0x200 mm/slub.c:2586
 put_cpu_partial+0x116/0x180 mm/slub.c:2662
 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x169/0x180 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slab.h:737 [inline]
 slab_alloc_node mm/slub.c:3398 [inline]
 __kmem_cache_alloc_node+0x1d7/0x310 mm/slub.c:3437
 __do_kmalloc_node mm/slab_common.c:954 [inline]
 __kmalloc+0x9e/0x1a0 mm/slab_common.c:968
 kmalloc include/linux/slab.h:558 [inline]
 tomoyo_realpath_from_path+0xcd/0x5f0 security/tomoyo/realpath.c:251
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_check_open_permission+0x22f/0x490 security/tomoyo/file.c:771
 security_file_open+0x50/0x560 security/security.c:1648
 do_dentry_open+0x306/0x11b0 fs/open.c:869
 do_open fs/namei.c:3557 [inline]
 path_openat+0x260e/0x2e00 fs/namei.c:3713
 do_filp_open+0x275/0x500 fs/namei.c:3740
 do_sys_openat2+0x13b/0x500 fs/open.c:1310

Memory state around the buggy address:
 ffff88807f8f3a00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
 ffff88807f8f3a80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
>ffff88807f8f3b00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
                            ^
 ffff88807f8f3b80: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff88807f8f3c00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
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