Buffer I/O error on dev loop7, logical block 31, lost async page write Buffer I/O error on dev loop5, logical block 31, lost async page write Buffer I/O error on dev loop3, logical block 31, lost async page write ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x42c9/0x5e70 Read of size 8 at addr ffff88801e0c8a38 by task syz-executor/10444 CPU: 1 PID: 10444 Comm: syz-executor Not tainted 6.1.0-rc8-next-20221208 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0x8f/0xb7 print_report+0x175/0x478 kasan_report+0xbf/0x1c0 __lock_acquire+0x42c9/0x5e70 lock_acquire+0x1a6/0x530 _raw_spin_lock_irq+0x36/0x50 kmemleak_scan+0x1a0/0x1600 kmemleak_write+0x574/0x680 full_proxy_write+0x121/0x190 vfs_write+0x358/0xe40 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f397af3f5c3 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:00007ffc18e2bea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ffc18e2c4e8 RCX: 00007f397af3f5c3 RDX: 0000000000000004 RSI: 00007f397aff5ed9 RDI: 0000000000000003 RBP: 0000000000000002 R08: 00000000000008a6 R09: 00007ffc18e43080 R10: 00007ffc18e43090 R11: 0000000000000246 R12: 00000000fffffff6 R13: 00007ffc18e2def1 R14: 0000000000000000 R15: 000000000021c8d5 Allocated by task 10448: kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x5c/0x70 kmem_cache_alloc+0x1e1/0x410 __create_object+0x3d/0xc10 kmem_cache_alloc+0x273/0x410 __alloc_file+0x21/0x240 alloc_empty_file+0x71/0x170 path_openat+0xd4/0x29b0 do_filp_open+0x1ba/0x410 do_sys_openat2+0x171/0x4c0 __x64_sys_openat+0x143/0x200 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc Freed by task 13: kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0xfb/0x610 rcu_core+0x7e2/0x2090 __do_softirq+0x1c7/0x8f9 Last potentially related work creation: kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xa40 kmem_cache_free+0xc1/0x610 rcu_core+0x7e2/0x2090 __do_softirq+0x1c7/0x8f9 Second to last potentially related work creation: kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xa40 __kmem_cache_free+0x95/0x410 ieee80211_ibss_rx_queued_mgmt+0x1a73/0x2f40 ieee80211_iface_work+0x9cb/0xcc0 process_one_work+0xa17/0x16a0 worker_thread+0x63b/0x1260 kthread+0x2f1/0x3a0 ret_from_fork+0x2c/0x50 The buggy address belongs to the object at ffff88801e0c8a20 which belongs to the cache kmemleak_object of size 368 The buggy address is located 24 bytes inside of 368-byte region [ffff88801e0c8a20, ffff88801e0c8b90) The buggy address belongs to the physical page: page:00000000f2e6c87d refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88801e0c97a0 pfn:0x1e0c8 head:00000000f2e6c87d order:1 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 flags: 0x100000000010200(slab|head|node=0|zone=1) raw: 0100000000010200 ffff88800844f780 ffffea00002e5090 ffffea0000348190 raw: ffff88801e0c97a0 000000000012000c 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88801e0c8900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801e0c8980: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc >ffff88801e0c8a00: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb ^ ffff88801e0c8a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801e0c8b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================