Bluetooth: hci0: Opcode 0x0c1a failed: -110 Bluetooth: hci0: Error when powering off device on rfkill (-110) ================================================================== BUG: KASAN: slab-use-after-free in cmd_complete_rsp+0x1b3/0x1e0 net/bluetooth/mgmt.c:1463 Read of size 8 at addr ffff8880287ce5c0 by task kworker/3:0/35 CPU: 3 UID: 0 PID: 35 Comm: kworker/3:0 Not tainted 6.12.0-rc6-syzkaller-00318-ga9cda7c0ffed #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: events rfkill_op_handler 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 cmd_complete_rsp+0x1b3/0x1e0 net/bluetooth/mgmt.c:1463 mgmt_pending_foreach+0xdf/0x140 net/bluetooth/mgmt_util.c:259 __mgmt_power_off+0x12a/0x2c0 net/bluetooth/mgmt.c:9474 hci_dev_close_sync+0xcbb/0x11b0 net/bluetooth/hci_sync.c:5201 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483 hci_rfkill_set_block+0x225/0x360 net/bluetooth/hci_core.c:911 rfkill_set_block+0x203/0x560 net/rfkill/core.c:346 rfkill_epo+0x8e/0x1d0 net/rfkill/core.c:466 __rfkill_handle_global_op net/rfkill/input.c:60 [inline] rfkill_op_handler+0x262/0x280 net/rfkill/input.c:108 process_one_work+0x9c5/0x1ba0 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 10060: 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 start_discovery_internal+0x4a1/0x800 net/bluetooth/mgmt.c:5922 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_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 35: 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 start_discovery_complete+0x146/0x220 net/bluetooth/mgmt.c:5860 _hci_cmd_sync_cancel_entry.constprop.0+0x6c/0x1d0 net/bluetooth/hci_sync.c:645 hci_cmd_sync_dequeue+0x178/0x1f0 net/bluetooth/hci_sync.c:890 cmd_complete_rsp+0x46/0x1e0 net/bluetooth/mgmt.c:1461 mgmt_pending_foreach+0xdf/0x140 net/bluetooth/mgmt_util.c:259 __mgmt_power_off+0x12a/0x2c0 net/bluetooth/mgmt.c:9474 hci_dev_close_sync+0xcbb/0x11b0 net/bluetooth/hci_sync.c:5201 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483 hci_rfkill_set_block+0x225/0x360 net/bluetooth/hci_core.c:911 rfkill_set_block+0x203/0x560 net/rfkill/core.c:346 rfkill_epo+0x8e/0x1d0 net/rfkill/core.c:466 __rfkill_handle_global_op net/rfkill/input.c:60 [inline] rfkill_op_handler+0x262/0x280 net/rfkill/input.c:108 process_one_work+0x9c5/0x1ba0 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 ffff8880287ce580 which belongs to the cache kmalloc-96 of size 96 The buggy address is located 64 bytes inside of freed 96-byte region [ffff8880287ce580, ffff8880287ce5e0) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880287ce000 pfn:0x287ce flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000000 ffff88801b042280 ffffea00011c6300 dead000000000002 raw: ffff8880287ce000 000000000020000f 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 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 6013, tgid 6011 (syz.2.3), ts 38700198824, free_ts 38697676910 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1541 prep_new_page mm/page_alloc.c:1549 [inline] get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3459 __alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4735 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265 alloc_slab_page mm/slub.c:2412 [inline] allocate_slab mm/slub.c:2578 [inline] new_slab+0x2c9/0x410 mm/slub.c:2631 ___slab_alloc+0xdac/0x1880 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_noprof+0x2b4/0x300 mm/slub.c:4290 kmalloc_noprof include/linux/slab.h:878 [inline] nfc_genl_rcv_nl_event net/nfc/netlink.c:1877 [inline] nfc_genl_rcv_nl_event+0xc1/0x2e0 net/nfc/netlink.c:1866 notifier_call_chain+0xb9/0x410 kernel/notifier.c:93 blocking_notifier_call_chain kernel/notifier.c:388 [inline] blocking_notifier_call_chain+0x69/0xa0 kernel/notifier.c:376 netlink_release+0x183f/0x1ff0 net/netlink/af_netlink.c:787 __sock_release+0xb0/0x270 net/socket.c:658 sock_close+0x1c/0x30 net/socket.c:1426 __fput+0x3f6/0xb60 fs/file_table.c:431 __fput_sync+0x45/0x50 fs/file_table.c:516 page last free pid 63 tgid 63 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1112 [inline] free_unref_page+0x5f4/0xdc0 mm/page_alloc.c:2642 __folio_put+0x30d/0x3d0 mm/swap.c:126 folio_put include/linux/mm.h:1478 [inline] free_page_and_swap_cache+0x249/0x2c0 mm/swap_state.c:308 __tlb_remove_table arch/x86/include/asm/tlb.h:34 [inline] __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x89/0xe0 mm/mmu_gather.c:282 rcu_do_batch kernel/rcu/tree.c:2567 [inline] rcu_core+0x79d/0x14d0 kernel/rcu/tree.c:2823 handle_softirqs+0x213/0x8f0 kernel/softirq.c:554 do_softirq kernel/softirq.c:455 [inline] do_softirq+0xb2/0xf0 kernel/softirq.c:442 __local_bh_enable_ip+0x100/0x120 kernel/softirq.c:382 ipv6_get_lladdr+0x299/0x4f0 net/ipv6/addrconf.c:1936 mld_newpack.isra.0+0x3a1/0x790 net/ipv6/mcast.c:1755 add_grhead+0x299/0x340 net/ipv6/mcast.c:1850 add_grec+0x111e/0x1670 net/ipv6/mcast.c:1988 mld_send_cr net/ipv6/mcast.c:2114 [inline] mld_ifc_work+0x41f/0xca0 net/ipv6/mcast.c:2651 process_one_work+0x9c5/0x1ba0 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 Memory state around the buggy address: ffff8880287ce480: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc ffff8880287ce500: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc >ffff8880287ce580: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ^ ffff8880287ce600: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff8880287ce680: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc 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