loop6: detected capacity change from 0 to 264192 loop4: detected capacity change from 0 to 264192 loop7: detected capacity change from 0 to 264192 ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x42c9/0x5e80 Read of size 8 at addr ffff88800f778018 by task syz-executor/10260 CPU: 1 PID: 10260 Comm: syz-executor Not tainted 6.1.0-rc1-next-20221019 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0x8b/0xc3 print_report+0x175/0x478 kasan_report+0xbb/0x1d0 __lock_acquire+0x42c9/0x5e80 lock_acquire+0x1a2/0x540 _raw_spin_lock_irq+0x32/0x60 kmemleak_scan+0x21d/0x16e0 kmemleak_write+0x570/0x690 full_proxy_write+0x11d/0x1a0 vfs_write+0x2cb/0xda0 ksys_write+0x127/0x260 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f11323b25c3 Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 RSP: 002b:00007fff951a2208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fff951a2848 RCX: 00007f11323b25c3 RDX: 0000000000000004 RSI: 00007f1132468ed9 RDI: 0000000000000003 RBP: 0000000000000002 R08: 0000000000000911 R09: 00007fff951a7080 R10: 00007fff951a7090 R11: 0000000000000246 R12: 00000000fffffff6 R13: 00007fff951a3ef1 R14: 0000000000000000 R15: 0000000000236c8a Allocated by task 10261: kasan_save_stack+0x1e/0x50 kasan_set_track+0x21/0x40 __kasan_slab_alloc+0x58/0x80 kmem_cache_alloc+0x1a9/0x3f0 __create_object+0x3d/0xc20 kmem_cache_alloc+0x235/0x3f0 __alloc_file+0x21/0x250 alloc_empty_file+0x6d/0x180 path_openat+0xd4/0x2780 do_filp_open+0x1b6/0x420 do_sys_openat2+0x171/0x4d0 __x64_sys_openat+0x13f/0x200 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc Freed by task 13: kasan_save_stack+0x1e/0x50 kasan_set_track+0x21/0x40 kasan_save_free_info+0x2a/0x60 __kasan_slab_free+0x106/0x1a0 kmem_cache_free+0xf7/0x620 rcu_core+0x7e2/0x2090 __do_softirq+0x1c3/0x8f5 Last potentially related work creation: kasan_save_stack+0x1e/0x50 __kasan_record_aux_stack+0x95/0xc0 __call_rcu_common.constprop.0+0x6a/0xa50 kmem_cache_free+0xbd/0x620 rcu_core+0x7e2/0x2090 __do_softirq+0x1c3/0x8f5 Second to last potentially related work creation: kasan_save_stack+0x1e/0x50 __kasan_record_aux_stack+0x95/0xc0 __call_rcu_common.constprop.0+0x6a/0xa50 __kmem_cache_free+0x91/0x410 ieee80211_bss_info_update+0x48c/0xaf0 ieee80211_ibss_rx_queued_mgmt+0x197d/0x2f70 ieee80211_iface_work+0x9c5/0xc90 process_one_work+0xa17/0x16b0 worker_thread+0x637/0x1270 kthread+0x2ed/0x3b0 ret_from_fork+0x2c/0x50 The buggy address belongs to the object at ffff88800f778000 which belongs to the cache kmemleak_object of size 368 The buggy address is located 24 bytes inside of 368-byte region [ffff88800f778000, ffff88800f778170) The buggy address belongs to the physical page: page:00000000df04c698 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffffea0000375280 pfn:0xf778 head:00000000df04c698 order:1 compound_mapcount:0 compound_pincount:0 flags: 0x100000000010200(slab|head|node=0|zone=1) raw: 0100000000010200 ffff88800804f780 dead000000120012 0000000000000000 raw: ffffea0000375280 dead000000000004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88800f777f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88800f777f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88800f778000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88800f778080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88800f778100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc ==================================================================