Warning: Permanently added '10.128.0.73' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 68.735566][ T1428] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.751121][ T1428] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.766423][ T1428] ================================================================== [ 68.774761][ T1428] BUG: KASAN: use-after-free in ieee80211_ibss_build_presp+0x10be/0x15f0 [ 68.783197][ T1428] Read of size 4 at addr ffff888014132cf8 by task kworker/u4:7/1428 [ 68.791371][ T1428] [ 68.793868][ T1428] CPU: 1 PID: 1428 Comm: kworker/u4:7 Not tainted 5.10.0-rc6-syzkaller #0 [ 68.802664][ T1428] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.812744][ T1428] Workqueue: phy0 ieee80211_iface_work [ 68.818228][ T1428] Call Trace: [ 68.821563][ T1428] dump_stack+0x107/0x163 [ 68.825925][ T1428] ? ieee80211_ibss_build_presp+0x10be/0x15f0 [ 68.832021][ T1428] ? ieee80211_ibss_build_presp+0x10be/0x15f0 [ 68.838111][ T1428] print_address_description.constprop.0.cold+0xae/0x4c8 [ 68.845152][ T1428] ? _raw_spin_lock_irqsave+0x4e/0x50 [ 68.850523][ T1428] ? vprintk_func+0x95/0x1e0 [ 68.855141][ T1428] ? ieee80211_ibss_build_presp+0x10be/0x15f0 [ 68.861226][ T1428] ? ieee80211_ibss_build_presp+0x10be/0x15f0 [ 68.867289][ T1428] kasan_report.cold+0x1f/0x37 [ 68.872048][ T1428] ? ieee80211_ibss_build_presp+0x10be/0x15f0 [ 68.878118][ T1428] check_memory_region+0x13d/0x180 [ 68.883218][ T1428] memcpy+0x20/0x60 [ 68.887018][ T1428] ieee80211_ibss_build_presp+0x10be/0x15f0 [ 68.892913][ T1428] ? ieee80211_ibss_timer+0x60/0x60 [ 68.898262][ T1428] ? ieee80211_recalc_radar_chanctx+0x277/0x610 [ 68.904529][ T1428] ? wait_for_completion+0x260/0x260 [ 68.909813][ T1428] ? ieee80211_vif_use_channel+0x491/0x680 [ 68.915662][ T1428] __ieee80211_sta_join_ibss+0x685/0x17f0 [ 68.921418][ T1428] ? ieee80211_csa_connection_drop_work+0xa0/0xa0 [ 68.927871][ T1428] ? vprintk_func+0x95/0x1e0 [ 68.932475][ T1428] ? printk+0xba/0xed [ 68.936645][ T1428] ? record_print_text.cold+0x16/0x16 [ 68.942061][ T1428] ieee80211_sta_create_ibss.cold+0xc9/0x116 [ 68.948047][ T1428] ? __ieee80211_sta_join_ibss+0x17f0/0x17f0 [ 68.954063][ T1428] ieee80211_ibss_work.cold+0x30e/0x60f [ 68.961292][ T1428] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 68.967630][ T1428] ? mark_held_locks+0x9f/0xe0 [ 68.972388][ T1428] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 68.978181][ T1428] ? lockdep_hardirqs_on+0x79/0x100 [ 68.983391][ T1428] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 68.989188][ T1428] ieee80211_iface_work+0x82e/0x970 [ 68.994381][ T1428] process_one_work+0x933/0x15a0 [ 68.999310][ T1428] ? lock_release+0x710/0x710 [ 69.003976][ T1428] ? pwq_dec_nr_in_flight+0x320/0x320 [ 69.009357][ T1428] ? rwlock_bug.part.0+0x90/0x90 [ 69.014294][ T1428] ? _raw_spin_lock_irq+0x41/0x50 [ 69.019320][ T1428] worker_thread+0x64c/0x1120 [ 69.024000][ T1428] ? __kthread_parkme+0x13f/0x1e0 [ 69.029015][ T1428] ? process_one_work+0x15a0/0x15a0 [ 69.034203][ T1428] kthread+0x3b1/0x4a0 [ 69.038281][ T1428] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 69.044175][ T1428] ret_from_fork+0x1f/0x30 [ 69.048598][ T1428] [ 69.050918][ T1428] Allocated by task 8545: [ 69.055257][ T1428] kasan_save_stack+0x1b/0x40 [ 69.059920][ T1428] __kasan_kmalloc.constprop.0+0xc2/0xd0 [ 69.065535][ T1428] __kmalloc_track_caller+0x1dc/0x3d0 [ 69.070896][ T1428] kmemdup+0x23/0x50 [ 69.074780][ T1428] ieee80211_ibss_join+0x861/0xf30 [ 69.079876][ T1428] __cfg80211_join_ibss+0x78c/0x1170 [ 69.085144][ T1428] nl80211_join_ibss+0xcbb/0x12b0 [ 69.090154][ T1428] genl_family_rcv_msg_doit+0x228/0x320 [ 69.095683][ T1428] genl_rcv_msg+0x328/0x580 [ 69.100170][ T1428] netlink_rcv_skb+0x153/0x420 [ 69.104915][ T1428] genl_rcv+0x24/0x40 [ 69.108882][ T1428] netlink_unicast+0x533/0x7d0 [ 69.113634][ T1428] netlink_sendmsg+0x856/0xd90 [ 69.118381][ T1428] sock_sendmsg+0xcf/0x120 [ 69.122783][ T1428] ____sys_sendmsg+0x6e8/0x810 [ 69.127530][ T1428] ___sys_sendmsg+0xf3/0x170 [ 69.132106][ T1428] __sys_sendmsg+0xe5/0x1b0 [ 69.136593][ T1428] do_syscall_64+0x2d/0x70 [ 69.140996][ T1428] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 69.146864][ T1428] [ 69.149175][ T1428] Freed by task 8549: [ 69.153139][ T1428] kasan_save_stack+0x1b/0x40 [ 69.157800][ T1428] kasan_set_track+0x1c/0x30 [ 69.162375][ T1428] kasan_set_free_info+0x1b/0x30 [ 69.167299][ T1428] __kasan_slab_free+0x102/0x140 [ 69.172224][ T1428] slab_free_freelist_hook+0x5d/0x150 [ 69.177581][ T1428] kfree+0xdb/0x360 [ 69.181392][ T1428] ieee80211_ibss_leave+0x83/0xe0 [ 69.186401][ T1428] __cfg80211_leave_ibss+0x19a/0x4c0 [ 69.191672][ T1428] cfg80211_leave_ibss+0x57/0x80 [ 69.196620][ T1428] cfg80211_change_iface+0x855/0xef0 [ 69.201901][ T1428] nl80211_set_interface+0x65c/0x8d0 [ 69.207192][ T1428] genl_family_rcv_msg_doit+0x228/0x320 [ 69.212721][ T1428] genl_rcv_msg+0x328/0x580 [ 69.217209][ T1428] netlink_rcv_skb+0x153/0x420 [ 69.223520][ T1428] genl_rcv+0x24/0x40 [ 69.227501][ T1428] netlink_unicast+0x533/0x7d0 [ 69.232250][ T1428] netlink_sendmsg+0x856/0xd90 [ 69.237017][ T1428] sock_sendmsg+0xcf/0x120 [ 69.241441][ T1428] ____sys_sendmsg+0x6e8/0x810 [ 69.246280][ T1428] ___sys_sendmsg+0xf3/0x170 [ 69.250872][ T1428] __sys_sendmsg+0xe5/0x1b0 [ 69.256028][ T1428] do_syscall_64+0x2d/0x70 [ 69.261336][ T1428] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 69.267210][ T1428] [ 69.269529][ T1428] The buggy address belongs to the object at ffff888014132cf8 [ 69.269529][ T1428] which belongs to the cache kmalloc-8 of size 8 [ 69.283655][ T1428] The buggy address is located 0 bytes inside of [ 69.283655][ T1428] 8-byte region [ffff888014132cf8, ffff888014132d00) [ 69.296705][ T1428] The buggy address belongs to the page: [ 69.302347][ T1428] page:0000000078f1b37d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14132 [ 69.312959][ T1428] flags: 0xfff00000000200(slab) [ 69.319995][ T1428] raw: 00fff00000000200 ffffea00004a8280 0000001200000012 ffff888010041c80 [ 69.328670][ T1428] raw: 0000000000000000 0000000080660066 00000001ffffffff 0000000000000000 [ 69.337702][ T1428] page dumped because: kasan: bad access detected [ 69.344343][ T1428] [ 69.346663][ T1428] Memory state around the buggy address: [ 69.352461][ T1428] ffff888014132b80: fc fc fb fc fc fc fc fb fc fc fc fc fb fc fc fc [ 69.360537][ T1428] ffff888014132c00: fc 00 fc fc fc fc 00 fc fc fc fc fb fc fc fc fc [ 69.368678][ T1428] >ffff888014132c80: fa fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc fa [ 69.377023][ T1428] ^ [ 69.385088][ T1428] ffff888014132d00: fc fc fc fc fa fc fc fc fc 00 fc fc fc fc 00 fc [ 69.393252][ T1428] ffff888014132d80: fc fc fc fb fc fc fc fc fb fc fc fc fc fb fc fc [ 69.401875][ T1428] ================================================================== [ 69.410778][ T1428] Disabling lock debugging due to kernel taint [ 69.448927][ T1428] Kernel panic - not syncing: panic_on_warn set ... [ 69.455562][ T1428] CPU: 1 PID: 1428 Comm: kworker/u4:7 Tainted: G B 5.10.0-rc6-syzkaller #0 [ 69.466146][ T1428] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.476412][ T1428] Workqueue: phy0 ieee80211_iface_work [ 69.482198][ T1428] Call Trace: [ 69.485503][ T1428] dump_stack+0x107/0x163 [ 69.489837][ T1428] ? ieee80211_ibss_build_presp+0x1040/0x15f0 [ 69.495881][ T1428] panic+0x306/0x73d [ 69.499755][ T1428] ? __warn_printk+0xf3/0xf3 [ 69.504352][ T1428] ? preempt_schedule_common+0x59/0xc0 [ 69.509793][ T1428] ? ieee80211_ibss_build_presp+0x10be/0x15f0 [ 69.515838][ T1428] ? preempt_schedule_thunk+0x16/0x18 [ 69.521188][ T1428] ? trace_hardirqs_on+0x51/0x1c0 [ 69.526200][ T1428] ? ieee80211_ibss_build_presp+0x10be/0x15f0 [ 69.532254][ T1428] ? ieee80211_ibss_build_presp+0x10be/0x15f0 [ 69.538306][ T1428] end_report+0x58/0x5e [ 69.542438][ T1428] kasan_report.cold+0xd/0x37 [ 69.547094][ T1428] ? ieee80211_ibss_build_presp+0x10be/0x15f0 [ 69.553313][ T1428] check_memory_region+0x13d/0x180 [ 69.558436][ T1428] memcpy+0x20/0x60 [ 69.562226][ T1428] ieee80211_ibss_build_presp+0x10be/0x15f0 [ 69.569083][ T1428] ? ieee80211_ibss_timer+0x60/0x60 [ 69.574347][ T1428] ? ieee80211_recalc_radar_chanctx+0x277/0x610 [ 69.580567][ T1428] ? wait_for_completion+0x260/0x260 [ 69.586532][ T1428] ? ieee80211_vif_use_channel+0x491/0x680 [ 69.592320][ T1428] __ieee80211_sta_join_ibss+0x685/0x17f0 [ 69.598057][ T1428] ? ieee80211_csa_connection_drop_work+0xa0/0xa0 [ 69.604540][ T1428] ? vprintk_func+0x95/0x1e0 [ 69.609115][ T1428] ? printk+0xba/0xed [ 69.613075][ T1428] ? record_print_text.cold+0x16/0x16 [ 69.618525][ T1428] ieee80211_sta_create_ibss.cold+0xc9/0x116 [ 69.624486][ T1428] ? __ieee80211_sta_join_ibss+0x17f0/0x17f0 [ 69.630455][ T1428] ieee80211_ibss_work.cold+0x30e/0x60f [ 69.636008][ T1428] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 69.642315][ T1428] ? mark_held_locks+0x9f/0xe0 [ 69.648220][ T1428] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 69.654034][ T1428] ? lockdep_hardirqs_on+0x79/0x100 [ 69.659220][ T1428] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 69.665016][ T1428] ieee80211_iface_work+0x82e/0x970 [ 69.670200][ T1428] process_one_work+0x933/0x15a0 [ 69.675215][ T1428] ? lock_release+0x710/0x710 [ 69.680008][ T1428] ? pwq_dec_nr_in_flight+0x320/0x320 [ 69.685372][ T1428] ? rwlock_bug.part.0+0x90/0x90 [ 69.690303][ T1428] ? _raw_spin_lock_irq+0x41/0x50 [ 69.695307][ T1428] worker_thread+0x64c/0x1120 [ 69.699982][ T1428] ? __kthread_parkme+0x13f/0x1e0 [ 69.705059][ T1428] ? process_one_work+0x15a0/0x15a0 [ 69.710334][ T1428] kthread+0x3b1/0x4a0 [ 69.714383][ T1428] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 69.720254][ T1428] ret_from_fork+0x1f/0x30 [ 69.725398][ T1428] Kernel Offset: disabled [ 69.730242][ T1428] Rebooting in 86400 seconds..