Bluetooth: hci6: Opcode 0x1003 failed: -110 ================================================================== BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: slab-use-after-free in atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:400 [inline] BUG: KASAN: slab-use-after-free in __refcount_sub_and_test include/linux/refcount.h:389 [inline] BUG: KASAN: slab-use-after-free in __refcount_dec_and_test include/linux/refcount.h:432 [inline] BUG: KASAN: slab-use-after-free in refcount_dec_and_test include/linux/refcount.h:450 [inline] BUG: KASAN: slab-use-after-free in skb_unref include/linux/skbuff.h:1292 [inline] BUG: KASAN: slab-use-after-free in __sk_skb_reason_drop net/core/skbuff.c:1205 [inline] BUG: KASAN: slab-use-after-free in sk_skb_reason_drop+0x3d/0x1a0 net/core/skbuff.c:1233 Write of size 4 at addr ffff888023a57264 by task kworker/u33:2/5952 CPU: 3 UID: 0 PID: 5952 Comm: kworker/u33:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: hci6 hci_power_on 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:378 [inline] print_report+0xcd/0x630 mm/kasan/report.c:482 kasan_report+0xe0/0x110 mm/kasan/report.c:595 check_region_inline mm/kasan/generic.c:194 [inline] kasan_check_range+0x100/0x1b0 mm/kasan/generic.c:200 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:400 [inline] __refcount_sub_and_test include/linux/refcount.h:389 [inline] __refcount_dec_and_test include/linux/refcount.h:432 [inline] refcount_dec_and_test include/linux/refcount.h:450 [inline] skb_unref include/linux/skbuff.h:1292 [inline] __sk_skb_reason_drop net/core/skbuff.c:1205 [inline] sk_skb_reason_drop+0x3d/0x1a0 net/core/skbuff.c:1233 kfree_skb_reason include/linux/skbuff.h:1322 [inline] kfree_skb include/linux/skbuff.h:1331 [inline] hci_uart_flush+0xa7/0x5d0 drivers/bluetooth/hci_ldisc.c:235 hci_dev_open_sync+0x80f/0x2590 net/bluetooth/hci_sync.c:5186 hci_dev_do_open+0x2a/0xb0 net/bluetooth/hci_core.c:430 hci_power_on+0x131/0x640 net/bluetooth/hci_core.c:959 process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421 kthread+0x3c5/0x780 kernel/kthread.c:463 ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 Allocated by task 10: kasan_save_stack+0x33/0x60 mm/kasan/common.c:57 kasan_save_track+0x14/0x30 mm/kasan/common.c:78 unpoison_slab_object mm/kasan/common.c:340 [inline] __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:366 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4953 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_node_noprof+0x298/0x800 mm/slub.c:5315 __alloc_skb+0x156/0x410 net/core/skbuff.c:679 alloc_skb include/linux/skbuff.h:1383 [inline] bcsp_prepare_pkt+0xe0/0xae0 drivers/bluetooth/hci_bcsp.c:218 bcsp_dequeue+0x237/0x4b0 drivers/bluetooth/hci_bcsp.c:308 hci_uart_dequeue drivers/bluetooth/hci_ldisc.c:107 [inline] hci_uart_write_work+0x4e3/0x960 drivers/bluetooth/hci_ldisc.c:161 process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421 kthread+0x3c5/0x780 kernel/kthread.c:463 ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 Freed by task 6517: kasan_save_stack+0x33/0x60 mm/kasan/common.c:57 kasan_save_track+0x14/0x30 mm/kasan/common.c:78 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:253 [inline] __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2540 [inline] slab_free mm/slub.c:6670 [inline] kmem_cache_free+0x2d8/0x770 mm/slub.c:6781 kfree_skbmem+0x1a4/0x1f0 net/core/skbuff.c:1130 __kfree_skb net/core/skbuff.c:1197 [inline] sk_skb_reason_drop+0x136/0x1a0 net/core/skbuff.c:1234 kfree_skb_reason include/linux/skbuff.h:1322 [inline] kfree_skb include/linux/skbuff.h:1331 [inline] hci_uart_flush+0xa7/0x5d0 drivers/bluetooth/hci_ldisc.c:235 hci_uart_close+0x1d/0xa0 drivers/bluetooth/hci_ldisc.c:268 hci_uart_tty_close+0xb0/0x2d0 drivers/bluetooth/hci_ldisc.c:545 tty_ldisc_close+0x114/0x1a0 drivers/tty/tty_ldisc.c:455 tty_ldisc_kill+0x8e/0x150 drivers/tty/tty_ldisc.c:613 tty_ldisc_hangup+0x365/0x730 drivers/tty/tty_ldisc.c:729 __tty_hangup.part.0+0x3fe/0x8c0 drivers/tty/tty_io.c:621 __tty_hangup drivers/tty/tty_io.c:688 [inline] tty_vhangup drivers/tty/tty_io.c:691 [inline] tty_vhangup drivers/tty/tty_io.c:688 [inline] tty_ioctl+0x1057/0x1650 drivers/tty/tty_io.c:2732 tty_compat_ioctl+0xb9/0x4d0 drivers/tty/tty_io.c:2958 __do_compat_sys_ioctl fs/ioctl.c:695 [inline] __se_compat_sys_ioctl fs/ioctl.c:638 [inline] __ia32_compat_sys_ioctl+0x242/0x370 fs/ioctl.c:638 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xe8/0x680 arch/x86/entry/syscall_32.c:307 do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:332 entry_SYSENTER_compat_after_hwframe+0x84/0x8e The buggy address belongs to the object at ffff888023a57180 which belongs to the cache skbuff_head_cache of size 240 The buggy address is located 228 bytes inside of freed 240-byte region [ffff888023a57180, ffff888023a57270) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x23a56 head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff88801c3ee8c0 ffffea00004de800 dead000000000002 raw: 0000000000000000 0000000000190019 00000000f5000000 0000000000000000 head: 00fff00000000040 ffff88801c3ee8c0 ffffea00004de800 dead000000000002 head: 0000000000000000 0000000000190019 00000000f5000000 0000000000000000 head: 00fff00000000001 ffffea00008e9581 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 0, tgid 0 (swapper/2), ts 51333919081, free_ts 48178269825 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1af/0x220 mm/page_alloc.c:1857 prep_new_page mm/page_alloc.c:1865 [inline] get_page_from_freelist+0xd0b/0x31a0 mm/page_alloc.c:3915 __alloc_frozen_pages_noprof+0x25f/0x2430 mm/page_alloc.c:5210 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2486 alloc_slab_page mm/slub.c:3075 [inline] allocate_slab mm/slub.c:3248 [inline] new_slab+0x2c3/0x430 mm/slub.c:3302 ___slab_alloc+0xe18/0x1c90 mm/slub.c:4656 __kmem_cache_alloc_bulk+0x1fb/0x6c0 mm/slub.c:7431 kmem_cache_alloc_bulk_noprof+0x4e1/0x800 mm/slub.c:7497 napi_skb_cache_get+0x6ac/0x900 net/core/skbuff.c:291 __alloc_skb+0x2aa/0x410 net/core/skbuff.c:668 napi_alloc_skb+0x44b/0x820 net/core/skbuff.c:832 e1000_alloc_rx_skb drivers/net/ethernet/intel/e1000/e1000_main.c:4123 [inline] e1000_copybreak drivers/net/ethernet/intel/e1000/e1000_main.c:4339 [inline] e1000_clean_rx_irq+0x2ae/0x1180 drivers/net/ethernet/intel/e1000/e1000_main.c:4391 e1000_clean+0x9cb/0x2670 drivers/net/ethernet/intel/e1000/e1000_main.c:3806 __napi_poll.constprop.0+0xb3/0x540 net/core/dev.c:7668 napi_poll net/core/dev.c:7731 [inline] net_rx_action+0x9f9/0xfa0 net/core/dev.c:7883 handle_softirqs+0x219/0x950 kernel/softirq.c:622 page last free pid 0 tgid 0 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1406 [inline] __free_frozen_pages+0x7df/0x1170 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0x79c/0x15f0 kernel/rcu/tree.c:2857 handle_softirqs+0x219/0x950 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Memory state around the buggy address: ffff888023a57100: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc ffff888023a57180: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888023a57200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc ^ ffff888023a57280: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ffff888023a57300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================