loop2: detected capacity change from 0 to 32768
==================================================================
BUG: KASAN: slab-out-of-bounds in reiserfs_xattr_get+0xe6/0x570 fs/reiserfs/xattr.c:675
Read of size 8 at addr ffff88802404e398 by task syz-executor.2/24659

CPU: 0 PID: 24659 Comm: syz-executor.2 Not tainted 6.4.0-rc6-syzkaller-00006-gfd37b884003c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
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:351 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:462
 kasan_report+0x176/0x1b0 mm/kasan/report.c:572
 reiserfs_xattr_get+0xe6/0x570 fs/reiserfs/xattr.c:675
 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:309
 acl_permission_check fs/namei.c:354 [inline]
 generic_permission+0x362/0x550 fs/namei.c:407
 do_inode_permission fs/namei.c:461 [inline]
 inode_permission+0x233/0x460 fs/namei.c:528
 may_open+0x2d6/0x440 fs/namei.c:3264
 do_open fs/namei.c:3634 [inline]
 path_openat+0x2652/0x3170 fs/namei.c:3791
 do_filp_open+0x234/0x490 fs/namei.c:3818
 do_sys_openat2+0x13f/0x500 fs/open.c:1356
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x247/0x290 fs/open.c:1383
 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: 0033:0x7fe02043e324
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:00007fe02113cf10 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000005ff0 RCX: 00007fe02043e324
RDX: 0000000000010000 RSI: 0000000020000000 RDI: 00000000ffffff9c
RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000002000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000010000
R13: 0000000020000000 R14: 00007fe02113cfe0 R15: 0000000020000100
 </TASK>

Allocated by task 5219:
 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:711
 slab_alloc_node mm/slub.c:3451 [inline]
 kmem_cache_alloc_node+0x157/0x350 mm/slub.c:3496
 __alloc_skb+0x181/0x420 net/core/skbuff.c:644
 alloc_skb include/linux/skbuff.h:1288 [inline]
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:751 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:808 [inline]
 nsim_dev_trap_report_work+0x250/0xa90 drivers/net/netdevsim/dev.c:853
 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
 kthread+0x2b8/0x350 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Freed by task 5219:
 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:3786 [inline]
 kmem_cache_free+0x297/0x520 mm/slub.c:3808
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:824 [inline]
 nsim_dev_trap_report_work+0x761/0xa90 drivers/net/netdevsim/dev.c:853
 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
 kthread+0x2b8/0x350 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

The buggy address belongs to the object at ffff88802404e280
 which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 40 bytes to the right of
 allocated 240-byte region [ffff88802404e280, ffff88802404e370)

The buggy address belongs to the physical page:
page:ffffea0000901380 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2404e
ksm flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000200 ffff888017a59500 ffffea000178f180 dead000000000007
raw: 0000000000000000 00000000000c000c 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 0x112820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 12, tgid 12 (kworker/u4:1), ts 1204524113347, free_ts 1194766019357
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1731
 prep_new_page mm/page_alloc.c:1738 [inline]
 get_page_from_freelist+0x321c/0x33a0 mm/page_alloc.c:3502
 __alloc_pages+0x255/0x670 mm/page_alloc.c:4768
 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:3192
 __slab_alloc mm/slub.c:3291 [inline]
 __slab_alloc_node mm/slub.c:3344 [inline]
 slab_alloc_node mm/slub.c:3441 [inline]
 kmem_cache_alloc_node+0x1f3/0x350 mm/slub.c:3496
 __alloc_skb+0x181/0x420 net/core/skbuff.c:644
 skb_copy+0xef/0x760 net/core/skbuff.c:1937
 mac80211_hwsim_tx_frame_no_nl+0x1063/0x18c0 drivers/net/wireless/virtual/mac80211_hwsim.c:1835
 mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/virtual/mac80211_hwsim.c:2164
 mac80211_hwsim_beacon_tx+0x3a5/0x750 drivers/net/wireless/virtual/mac80211_hwsim.c:2257
 __iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:766
 ieee80211_iterate_active_interfaces_atomic+0xb3/0x140 net/mac80211/util.c:802
 mac80211_hwsim_beacon+0xd4/0x1e0 drivers/net/wireless/virtual/mac80211_hwsim.c:2283
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x59f/0xd10 kernel/time/hrtimer.c:1749
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1302 [inline]
 free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2564
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2659
 pipe_buf_release include/linux/pipe_fs_i.h:203 [inline]
 pipe_read+0x6e4/0x1300 fs/pipe.c:324
 call_read_iter include/linux/fs.h:1862 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x788/0xb00 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:
 ffff88802404e280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802404e300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
>ffff88802404e380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
                            ^
 ffff88802404e400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802404e480: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
==================================================================