Bluetooth: hci7: command 0x0405 tx timeout watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.0:4250] Modules linked in: irq event stamp: 5406347 hardirqs last enabled at (5406346): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (5406347): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (5390264): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5390267): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 4250 Comm: syz-executor.0 Not tainted 5.10.227 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:deref_stack_reg+0x10a/0x160 arch/x86/kernel/unwind_orc.c:362 Code: 00 00 00 00 fc ff df 48 89 d9 48 89 ef e8 de f8 ff ff 48 c1 e9 03 80 3c 11 00 75 35 48 89 03 b8 01 00 00 00 48 83 c4 08 5b 5d <41> 5c 41 5d e9 4d cd 0f 03 e8 48 3f 5c 00 e9 17 ff ff ff e8 4e 3f RSP: 0018:ffff88806cf095b8 EFLAGS: 00000282 RAX: 0000000000000001 RBX: 0000000000000002 RCX: 1ffff1100d9e12de RDX: dffffc0000000000 RSI: ffff88806cf097c8 RDI: ffff88806cf097c8 RBP: ffff88806cf096dd R08: ffffffff859b9ea5 R09: ffff88806cf097d0 R10: 0000000000032042 R11: 1ffff1100d9e12c2 R12: ffff88806cf096a8 R13: ffff88806cf02000 R14: 1ffff1100d9e12c2 R15: ffffffff859b9ea4 FS: 00007f92060b1700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000046072000 CR4: 0000000000350ee0 Call Trace: unwind_next_frame+0xbf8/0x1a90 arch/x86/kernel/unwind_orc.c:536 arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc9/0xd0 mm/kasan/common.c:461 slab_post_alloc_hook mm/slab.h:532 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x13b/0x310 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] kmem_cache_alloc_node+0x169/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:199 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:447 netdev_alloc_skb include/linux/skbuff.h:2854 [inline] dev_alloc_skb include/linux/skbuff.h:2867 [inline] __ieee80211_beacon_get+0x3af/0x1440 net/mac80211/tx.c:4876 ieee80211_beacon_get_tim+0x88/0x9f0 net/mac80211/tx.c:4990 ieee80211_beacon_get include/net/mac80211.h:4912 [inline] mac80211_hwsim_beacon_tx+0x111/0x940 drivers/net/wireless/mac80211_hwsim.c:1740 __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1586 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1650 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1667 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:91 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:108 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline] RIP: 0010:check_memory_region_inline mm/kasan/generic.c:183 [inline] RIP: 0010:check_memory_region+0x198/0x1f0 mm/kasan/generic.c:192 Code: 7d 85 41 bb 01 00 00 00 5b 5d 44 89 d8 41 5c e9 ee 8f b3 02 48 85 d2 74 e9 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 db 80 38 00 <74> f2 e9 28 ff ff ff 48 29 c3 48 89 da 49 89 d3 49 c1 fb 3f 49 c1 RSP: 0018:ffff88800d3ae768 EFLAGS: 00000202 RAX: ffffed1001a75d0f RBX: ffffed1001a75d10 RCX: ffffffff81fb2069 RDX: ffffed1001a75d10 RSI: 0000000000000001 RDI: ffff88800d3ae878 RBP: ffffed1001a75d0f R08: 0000000000000000 R09: ffff88800d3ae878 R10: ffffed1001a75d0f R11: 0000000000000001 R12: 0000000000000001 R13: ffff8880461700dc R14: ffff88800d3ae878 R15: 0000000000000de8 memcpy+0x20/0x60 mm/kasan/common.c:105 nla_put+0xf9/0x140 lib/nlattr.c:1043 nla_put_u8 include/net/netlink.h:1246 [inline] nl80211_send_station+0x237a/0x30c0 net/wireless/nl80211.c:5722 cfg80211_del_sta_sinfo+0x191/0x470 net/wireless/nl80211.c:16527 __sta_info_destroy_part2+0x310/0x4f0 net/mac80211/sta_info.c:1119 __sta_info_flush+0x3a0/0x520 net/mac80211/sta_info.c:1240 sta_info_flush net/mac80211/sta_info.h:838 [inline] ieee80211_ibss_disconnect+0x115/0x750 net/mac80211/ibss.c:706 ieee80211_ibss_leave+0x12/0x160 net/mac80211/ibss.c:1875 rdev_leave_ibss net/wireless/rdev-ops.h:545 [inline] __cfg80211_leave_ibss+0x183/0x4f0 net/wireless/ibss.c:212 __cfg80211_leave+0x14b/0x370 net/wireless/core.c:1177 cfg80211_leave net/wireless/core.c:1228 [inline] cfg80211_netdev_notifier_call+0x385/0x10c0 net/wireless/core.c:1341 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xb3/0x110 kernel/notifier.c:410 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2047 call_netdevice_notifiers_extack net/core/dev.c:2059 [inline] call_netdevice_notifiers net/core/dev.c:2073 [inline] __dev_close_many+0xf3/0x2f0 net/core/dev.c:1593 __dev_close net/core/dev.c:1631 [inline] __dev_change_flags+0x299/0x6e0 net/core/dev.c:8509 dev_change_flags+0x8a/0x160 net/core/dev.c:8582 do_setlink+0x90c/0x3ac0 net/core/rtnetlink.c:2729 __rtnl_newlink+0xc39/0x1700 net/core/rtnetlink.c:3407 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3527 rtnetlink_rcv_msg+0x41e/0xbb0 net/core/rtnetlink.c:5607 netlink_rcv_skb+0x14b/0x430 net/netlink/af_netlink.c:2500 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline] netlink_unicast+0x549/0x7f0 net/netlink/af_netlink.c:1348 netlink_sendmsg+0x90f/0xdf0 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec net/socket.c:651 [inline] __sock_sendmsg+0x154/0x190 net/socket.c:663 ____sys_sendmsg+0x70d/0x870 net/socket.c:2378 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2461 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f9208b3bb19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f92060b1188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f9208c4ef60 RCX: 00007f9208b3bb19 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 00007f9208b95f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffda6dc14f R14: 00007f92060b1300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 0 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:706 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. syz-executor.3 (4240) used greatest stack depth: 23656 bytes left ---------------- Code disassembly (best guess), 6 bytes skipped: 0: df 48 89 fisttps -0x77(%rax) 3: d9 48 89 (bad) -0x77(%rax) 6: ef out %eax,(%dx) 7: e8 de f8 ff ff callq 0xfffff8ea c: 48 c1 e9 03 shr $0x3,%rcx 10: 80 3c 11 00 cmpb $0x0,(%rcx,%rdx,1) 14: 75 35 jne 0x4b 16: 48 89 03 mov %rax,(%rbx) 19: b8 01 00 00 00 mov $0x1,%eax 1e: 48 83 c4 08 add $0x8,%rsp 22: 5b pop %rbx 23: 5d pop %rbp * 24: 41 5c pop %r12 <-- trapping instruction 26: 41 5d pop %r13 28: e9 4d cd 0f 03 jmpq 0x30fcd7a 2d: e8 48 3f 5c 00 callq 0x5c3f7a 32: e9 17 ff ff ff jmpq 0xffffff4e 37: e8 .byte 0xe8 38: 4e 3f rex.WRX (bad)