Bluetooth: hci0: Opcode 0x0c03 failed: -110 ================================================================== BUG: KASAN: slab-use-after-free in set_powered_sync+0xc1/0xd0 net/bluetooth/mgmt.c:1353 Read of size 8 at addr ffff88801f6b8418 by task kworker/u33:2/5958 CPU: 3 UID: 0 PID: 5958 Comm: kworker/u33:2 Not tainted 6.12.0-rc4-syzkaller-00261-g850925a8133c #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: hci0 hci_cmd_sync_work Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc3/0x620 mm/kasan/report.c:488 kasan_report+0xd9/0x110 mm/kasan/report.c:601 set_powered_sync+0xc1/0xd0 net/bluetooth/mgmt.c:1353 hci_cmd_sync_work+0x1a4/0x410 net/bluetooth/hci_sync.c:328 process_one_work+0x958/0x1b30 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Allocated by task 6705: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394 kmalloc_noprof include/linux/slab.h:878 [inline] kzalloc_noprof include/linux/slab.h:1014 [inline] mgmt_pending_new+0x5b/0x290 net/bluetooth/mgmt_util.c:269 mgmt_pending_add+0x36/0x160 net/bluetooth/mgmt_util.c:296 set_powered+0x28c/0x5c0 net/bluetooth/mgmt.c:1394 hci_mgmt_cmd net/bluetooth/hci_sock.c:1712 [inline] hci_sock_sendmsg+0x1528/0x25e0 net/bluetooth/hci_sock.c:1832 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg net/socket.c:744 [inline] sock_write_iter+0x4fe/0x5b0 net/socket.c:1165 new_sync_write fs/read_write.c:590 [inline] vfs_write+0x5ae/0x1150 fs/read_write.c:683 ksys_write+0x1fa/0x260 fs/read_write.c:736 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e Freed by task 5958: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:2342 [inline] slab_free mm/slub.c:4579 [inline] kfree+0x14f/0x4b0 mm/slub.c:4727 settings_rsp+0x257/0x400 net/bluetooth/mgmt.c:1443 mgmt_pending_foreach+0xdf/0x140 net/bluetooth/mgmt_util.c:259 __mgmt_power_off+0xc8/0x2c0 net/bluetooth/mgmt.c:9460 hci_dev_close_sync+0xd37/0x1260 net/bluetooth/hci_sync.c:5197 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483 hci_error_reset+0xbf/0x320 net/bluetooth/hci_core.c:1016 process_one_work+0x958/0x1b30 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 The buggy address belongs to the object at ffff88801f6b8400 which belongs to the cache kmalloc-96 of size 96 The buggy address is located 24 bytes inside of freed 96-byte region [ffff88801f6b8400, ffff88801f6b8460) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88801f6b8400 pfn:0x1f6b8 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000000 ffff88801ac42280 dead000000000100 dead000000000122 raw: ffff88801f6b8400 0000000080200017 00000001f5000000 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 0x252800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_THISNODE), pid 5954, tgid 5954 (syz-executor), ts 38167821704, free_ts 38121805328 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1545 [inline] get_page_from_freelist+0x101e/0x3070 mm/page_alloc.c:3457 __alloc_pages_slowpath mm/page_alloc.c:4269 [inline] __alloc_pages_noprof+0x6af/0x25a0 mm/page_alloc.c:4746 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_slab_page mm/slub.c:2414 [inline] allocate_slab mm/slub.c:2578 [inline] new_slab+0xca/0x3f0 mm/slub.c:2631 ___slab_alloc+0xd1d/0x16f0 mm/slub.c:3818 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908 __slab_alloc_node mm/slub.c:3961 [inline] slab_alloc_node mm/slub.c:4122 [inline] __kmalloc_cache_node_noprof+0xf1/0x360 mm/slub.c:4303 kmalloc_node_noprof include/linux/slab.h:901 [inline] alloc_node_nr_active kernel/workqueue.c:4845 [inline] __alloc_workqueue+0x506/0x1810 kernel/workqueue.c:5698 alloc_workqueue+0xd3/0x200 kernel/workqueue.c:5758 ieee80211_register_hw+0x1e21/0x3fb0 net/mac80211/main.c:1477 mac80211_hwsim_new_radio+0x2c47/0x56c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5519 hwsim_new_radio_nl+0xb42/0x12b0 drivers/net/wireless/virtual/mac80211_hwsim.c:6203 genl_family_rcv_msg_doit+0x202/0x2f0 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x565/0x800 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2551 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 page last free pid 5967 tgid 5967 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1108 [inline] free_unref_page+0x5f4/0xdc0 mm/page_alloc.c:2638 __put_partials+0x14c/0x170 mm/slub.c:3145 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:247 [inline] slab_post_alloc_hook mm/slub.c:4085 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_node_noprof+0x153/0x310 mm/slub.c:4186 __alloc_skb+0x2b3/0x380 net/core/skbuff.c:668 alloc_skb include/linux/skbuff.h:1322 [inline] nlmsg_new include/net/netlink.h:1015 [inline] rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4099 rtmsg_ifinfo_event net/core/rtnetlink.c:4141 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:4131 [inline] rtnetlink_event+0xf3/0x1f0 net/core/rtnetlink.c:6726 notifier_call_chain+0xb9/0x410 kernel/notifier.c:93 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline] call_netdevice_notifiers+0x7d/0xb0 net/core/dev.c:2048 vlan_dev_inherit_address net/8021q/vlan_dev.c:255 [inline] vlan_dev_inherit_address net/8021q/vlan_dev.c:248 [inline] vlan_dev_open+0x781/0x940 net/8021q/vlan_dev.c:270 __dev_open+0x2d4/0x4e0 net/core/dev.c:1476 __dev_change_flags+0x561/0x720 net/core/dev.c:8841 dev_change_flags+0x8f/0x160 net/core/dev.c:8913 Memory state around the buggy address: ffff88801f6b8300: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc ffff88801f6b8380: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc >ffff88801f6b8400: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ^ ffff88801f6b8480: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc ffff88801f6b8500: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ==================================================================