Warning: Permanently added '10.128.0.149' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing 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executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 58.631415][ T7157] ================================================================== [ 58.639685][ T7157] BUG: KASAN: use-after-free in tipc_nl_node_dump_monitor_peer+0x4da/0x590 [ 58.648270][ T7157] Read of size 2 at addr ffff88809f01c814 by task syz-executor332/7157 [ 58.656486][ T7157] [ 58.658841][ T7157] CPU: 1 PID: 7157 Comm: syz-executor332 Not tainted 5.8.0-rc3-syzkaller #0 [ 58.667499][ T7157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.677654][ T7157] Call Trace: [ 58.680932][ T7157] dump_stack+0x18f/0x20d [ 58.685246][ T7157] ? tipc_nl_node_dump_monitor_peer+0x4da/0x590 [ 58.691472][ T7157] ? tipc_nl_node_dump_monitor_peer+0x4da/0x590 [ 58.697896][ T7157] print_address_description.constprop.0.cold+0xae/0x436 [ 58.704923][ T7157] ? ____sys_sendmsg+0x6e8/0x810 [ 58.709967][ T7157] ? ___sys_sendmsg+0xf3/0x170 [ 58.714724][ T7157] ? __sys_sendmsg+0xe5/0x1b0 [ 58.719385][ T7157] ? lockdep_hardirqs_off+0x66/0xa0 [ 58.724584][ T7157] ? vprintk_func+0x97/0x1a6 [ 58.729188][ T7157] ? tipc_nl_node_dump_monitor_peer+0x4da/0x590 [ 58.735503][ T7157] kasan_report.cold+0x1f/0x37 [ 58.740295][ T7157] ? tipc_nl_node_dump_monitor_peer+0x4da/0x590 [ 58.746581][ T7157] tipc_nl_node_dump_monitor_peer+0x4da/0x590 [ 58.752640][ T7157] ? tipc_nl_node_dump_monitor+0x300/0x300 [ 58.758451][ T7157] ? lock_is_held_type+0xb0/0xe0 [ 58.763396][ T7157] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 58.768951][ T7157] ? kmem_cache_alloc_node_trace+0x3b0/0x400 [ 58.774920][ T7157] ? __kmalloc_node_track_caller+0x38/0x60 [ 58.780827][ T7157] ? kasan_unpoison_shadow+0x33/0x40 [ 58.786121][ T7157] ? __phys_addr+0x9a/0x110 [ 58.790659][ T7157] ? memset+0x20/0x40 [ 58.794646][ T7157] genl_lock_dumpit+0x7f/0xb0 [ 58.799416][ T7157] netlink_dump+0x4cd/0xf60 [ 58.803940][ T7157] ? netlink_insert+0x1670/0x1670 [ 58.808960][ T7157] ? __mutex_unlock_slowpath+0xe2/0x610 [ 58.814496][ T7157] ? genl_start+0x45a/0x6e0 [ 58.818981][ T7157] __netlink_dump_start+0x643/0x900 [ 58.824177][ T7157] ? genl_rcv_msg+0x9e0/0x9e0 [ 58.828857][ T7157] ? tipc_nl_node_dump_monitor+0x300/0x300 [ 58.834661][ T7157] genl_family_rcv_msg_dumpit+0x2ac/0x310 [ 58.840386][ T7157] ? genl_rcv+0x40/0x40 [ 58.844525][ T7157] ? mutex_lock_io_nested+0xf60/0xf60 [ 58.849895][ T7157] ? mark_lock+0xbc/0x1710 [ 58.855266][ T7157] ? genl_rcv_msg+0x9e0/0x9e0 [ 58.859922][ T7157] ? genl_unlock+0x20/0x20 [ 58.864328][ T7157] ? genl_parallel_done+0x170/0x170 [ 58.869531][ T7157] ? __radix_tree_lookup+0x1f3/0x290 [ 58.874816][ T7157] genl_rcv_msg+0x797/0x9e0 [ 58.879315][ T7157] ? genl_family_rcv_msg_attrs_parse.isra.0+0x310/0x310 [ 58.886237][ T7157] ? lock_acquire+0x1f1/0xad0 [ 58.890903][ T7157] ? genl_rcv+0x15/0x40 [ 58.895056][ T7157] ? lock_release+0x8d0/0x8d0 [ 58.899720][ T7157] netlink_rcv_skb+0x15a/0x430 [ 58.904480][ T7157] ? genl_family_rcv_msg_attrs_parse.isra.0+0x310/0x310 [ 58.911415][ T7157] ? netlink_ack+0xa10/0xa10 [ 58.916011][ T7157] genl_rcv+0x24/0x40 [ 58.920005][ T7157] netlink_unicast+0x533/0x7d0 [ 58.924776][ T7157] ? netlink_attachskb+0x810/0x810 [ 58.929889][ T7157] ? _copy_from_iter_full+0x247/0x890 [ 58.935259][ T7157] ? __phys_addr+0x9a/0x110 [ 58.939765][ T7157] ? __phys_addr_symbol+0x2c/0x70 [ 58.944794][ T7157] ? __check_object_size+0x171/0x3e4 [ 58.950086][ T7157] netlink_sendmsg+0x856/0xd90 [ 58.954861][ T7157] ? netlink_unicast+0x7d0/0x7d0 [ 58.959813][ T7157] ? netlink_unicast+0x7d0/0x7d0 [ 58.964759][ T7157] sock_sendmsg+0xcf/0x120 [ 58.969186][ T7157] ____sys_sendmsg+0x6e8/0x810 [ 58.973958][ T7157] ? kernel_sendmsg+0x50/0x50 [ 58.978620][ T7157] ? do_recvmmsg+0x6d0/0x6d0 [ 58.983192][ T7157] ? find_held_lock+0x2d/0x110 [ 58.987951][ T7157] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.993935][ T7157] ? lock_downgrade+0x820/0x820 [ 58.998772][ T7157] ___sys_sendmsg+0xf3/0x170 [ 59.003353][ T7157] ? sendmsg_copy_msghdr+0x160/0x160 [ 59.008651][ T7157] ? debug_object_active_state+0x260/0x350 [ 59.014459][ T7157] ? lock_downgrade+0x820/0x820 [ 59.019299][ T7157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.025091][ T7157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.031068][ T7157] ? trace_hardirqs_on+0x5f/0x220 [ 59.036351][ T7157] ? lockdep_hardirqs_on+0x6a/0xe0 [ 59.041464][ T7157] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 59.047257][ T7157] ? debug_object_active_state+0x260/0x350 [ 59.053051][ T7157] ? check_preemption_disabled+0x50/0x130 [ 59.058758][ T7157] ? __fget_light+0x215/0x280 [ 59.063422][ T7157] __sys_sendmsg+0xe5/0x1b0 [ 59.068884][ T7157] ? __sys_sendmsg_sock+0xb0/0xb0 [ 59.073894][ T7157] ? lock_is_held_type+0xb0/0xe0 [ 59.078822][ T7157] ? do_syscall_64+0x1c/0xe0 [ 59.083406][ T7157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.089390][ T7157] do_syscall_64+0x60/0xe0 [ 59.093807][ T7157] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.099682][ T7157] RIP: 0033:0x4452a9 [ 59.103554][ T7157] Code: Bad RIP value. [ 59.107606][ T7157] RSP: 002b:00007ffeb39380d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 59.116004][ T7157] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004452a9 [ 59.123987][ T7157] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 59.131962][ T7157] RBP: 000000000000e4f5 R08: 0000000000000000 R09: 00000000004002e0 [ 59.139917][ T7157] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402440 [ 59.148023][ T7157] R13: 00000000004024d0 R14: 0000000000000000 R15: 0000000000000000 [ 59.156015][ T7157] [ 59.158350][ T7157] Allocated by task 7155: [ 59.162684][ T7157] save_stack+0x1b/0x40 [ 59.166846][ T7157] __kasan_kmalloc.constprop.0+0xc2/0xd0 [ 59.172485][ T7157] __alloc_skb+0xae/0x550 [ 59.176815][ T7157] netlink_sendmsg+0x94f/0xd90 [ 59.181926][ T7157] sock_sendmsg+0xcf/0x120 [ 59.186328][ T7157] ____sys_sendmsg+0x6e8/0x810 [ 59.191117][ T7157] ___sys_sendmsg+0xf3/0x170 [ 59.195708][ T7157] __sys_sendmsg+0xe5/0x1b0 [ 59.200207][ T7157] do_syscall_64+0x60/0xe0 [ 59.204636][ T7157] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.210717][ T7157] [ 59.213042][ T7157] Freed by task 7155: [ 59.217094][ T7157] save_stack+0x1b/0x40 [ 59.221267][ T7157] __kasan_slab_free+0xf5/0x140 [ 59.226121][ T7157] kfree+0x103/0x2c0 [ 59.230018][ T7157] skb_release_data+0x6d9/0x910 [ 59.234848][ T7157] consume_skb+0xc2/0x160 [ 59.239180][ T7157] netlink_unicast+0x53b/0x7d0 [ 59.243945][ T7157] netlink_sendmsg+0x856/0xd90 [ 59.248716][ T7157] sock_sendmsg+0xcf/0x120 [ 59.253119][ T7157] ____sys_sendmsg+0x6e8/0x810 [ 59.257881][ T7157] ___sys_sendmsg+0xf3/0x170 [ 59.262451][ T7157] __sys_sendmsg+0xe5/0x1b0 [ 59.266935][ T7157] do_syscall_64+0x60/0xe0 [ 59.271355][ T7157] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.277241][ T7157] [ 59.279569][ T7157] The buggy address belongs to the object at ffff88809f01c800 [ 59.279569][ T7157] which belongs to the cache kmalloc-512 of size 512 [ 59.293624][ T7157] The buggy address is located 20 bytes inside of [ 59.293624][ T7157] 512-byte region [ffff88809f01c800, ffff88809f01ca00) [ 59.307243][ T7157] The buggy address belongs to the page: [ 59.312898][ T7157] page:ffffea00027c0700 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 [ 59.321997][ T7157] flags: 0xfffe0000000200(slab) [ 59.326868][ T7157] raw: 00fffe0000000200 ffffea0002846808 ffffea0002a0fb88 ffff8880aa000a80 [ 59.335554][ T7157] raw: 0000000000000000 ffff88809f01c000 0000000100000004 0000000000000000 [ 59.344123][ T7157] page dumped because: kasan: bad access detected [ 59.350521][ T7157] [ 59.352829][ T7157] Memory state around the buggy address: [ 59.358459][ T7157] ffff88809f01c700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 59.366510][ T7157] ffff88809f01c780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 59.374577][ T7157] >ffff88809f01c800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb executing program [ 59.382622][ T7157] ^ [ 59.387215][ T7157] ffff88809f01c880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 59.395291][ T7157] ffff88809f01c900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 59.403357][ T7157] ================================================================== [ 59.411529][ T7157] Disabling lock debugging due to kernel taint [ 59.420603][ T7157] Kernel panic - not syncing: panic_on_warn set ... executing program [ 59.427209][ T7157] CPU: 1 PID: 7157 Comm: syz-executor332 Tainted: G B 5.8.0-rc3-syzkaller #0 [ 59.437265][ T7157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.447322][ T7157] Call Trace: [ 59.450617][ T7157] dump_stack+0x18f/0x20d [ 59.454955][ T7157] ? tipc_nl_node_dump_monitor_peer+0x3e0/0x590 [ 59.461232][ T7157] panic+0x2e3/0x75c [ 59.465141][ T7157] ? __warn_printk+0xf3/0xf3 [ 59.469775][ T7157] ? preempt_schedule_common+0x59/0xc0 [ 59.475424][ T7157] ? tipc_nl_node_dump_monitor_peer+0x4da/0x590 [ 59.481688][ T7157] ? preempt_schedule_thunk+0x16/0x18 [ 59.487048][ T7157] ? trace_hardirqs_on+0x55/0x220 [ 59.492070][ T7157] ? tipc_nl_node_dump_monitor_peer+0x4da/0x590 [ 59.498486][ T7157] ? tipc_nl_node_dump_monitor_peer+0x4da/0x590 [ 59.504737][ T7157] end_report+0x4d/0x53 [ 59.508892][ T7157] kasan_report.cold+0xd/0x37 [ 59.513564][ T7157] ? tipc_nl_node_dump_monitor_peer+0x4da/0x590 [ 59.519801][ T7157] tipc_nl_node_dump_monitor_peer+0x4da/0x590 [ 59.525899][ T7157] ? tipc_nl_node_dump_monitor+0x300/0x300 [ 59.531955][ T7157] ? lock_is_held_type+0xb0/0xe0 [ 59.536893][ T7157] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 59.542447][ T7157] ? kmem_cache_alloc_node_trace+0x3b0/0x400 [ 59.548432][ T7157] ? __kmalloc_node_track_caller+0x38/0x60 [ 59.554236][ T7157] ? kasan_unpoison_shadow+0x33/0x40 [ 59.559519][ T7157] ? __phys_addr+0x9a/0x110 [ 59.564011][ T7157] ? memset+0x20/0x40 [ 59.567995][ T7157] genl_lock_dumpit+0x7f/0xb0 [ 59.572664][ T7157] netlink_dump+0x4cd/0xf60 [ 59.577162][ T7157] ? netlink_insert+0x1670/0x1670 [ 59.582192][ T7157] ? __mutex_unlock_slowpath+0xe2/0x610 [ 59.587743][ T7157] ? genl_start+0x45a/0x6e0 [ 59.592228][ T7157] __netlink_dump_start+0x643/0x900 [ 59.597411][ T7157] ? genl_rcv_msg+0x9e0/0x9e0 [ 59.602071][ T7157] ? tipc_nl_node_dump_monitor+0x300/0x300 [ 59.607871][ T7157] genl_family_rcv_msg_dumpit+0x2ac/0x310 [ 59.613584][ T7157] ? genl_rcv+0x40/0x40 [ 59.617730][ T7157] ? mutex_lock_io_nested+0xf60/0xf60 [ 59.623102][ T7157] ? mark_lock+0xbc/0x1710 [ 59.627516][ T7157] ? genl_rcv_msg+0x9e0/0x9e0 [ 59.632190][ T7157] ? genl_unlock+0x20/0x20 [ 59.636584][ T7157] ? genl_parallel_done+0x170/0x170 [ 59.641770][ T7157] ? __radix_tree_lookup+0x1f3/0x290 [ 59.647043][ T7157] genl_rcv_msg+0x797/0x9e0 [ 59.651555][ T7157] ? genl_family_rcv_msg_attrs_parse.isra.0+0x310/0x310 [ 59.658508][ T7157] ? lock_acquire+0x1f1/0xad0 [ 59.663168][ T7157] ? genl_rcv+0x15/0x40 [ 59.667312][ T7157] ? lock_release+0x8d0/0x8d0 [ 59.672117][ T7157] netlink_rcv_skb+0x15a/0x430 [ 59.677669][ T7157] ? genl_family_rcv_msg_attrs_parse.isra.0+0x310/0x310 [ 59.684881][ T7157] ? netlink_ack+0xa10/0xa10 [ 59.689454][ T7157] genl_rcv+0x24/0x40 [ 59.693434][ T7157] netlink_unicast+0x533/0x7d0 [ 59.698199][ T7157] ? netlink_attachskb+0x810/0x810 [ 59.703480][ T7157] ? _copy_from_iter_full+0x247/0x890 [ 59.708853][ T7157] ? __phys_addr+0x9a/0x110 [ 59.713339][ T7157] ? __phys_addr_symbol+0x2c/0x70 [ 59.718346][ T7157] ? __check_object_size+0x171/0x3e4 [ 59.723643][ T7157] netlink_sendmsg+0x856/0xd90 [ 59.728409][ T7157] ? netlink_unicast+0x7d0/0x7d0 [ 59.733337][ T7157] ? netlink_unicast+0x7d0/0x7d0 [ 59.738280][ T7157] sock_sendmsg+0xcf/0x120 [ 59.742679][ T7157] ____sys_sendmsg+0x6e8/0x810 [ 59.747424][ T7157] ? kernel_sendmsg+0x50/0x50 [ 59.752092][ T7157] ? do_recvmmsg+0x6d0/0x6d0 [ 59.756709][ T7157] ? find_held_lock+0x2d/0x110 [ 59.761493][ T7157] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.767470][ T7157] ? lock_downgrade+0x820/0x820 [ 59.772302][ T7157] ___sys_sendmsg+0xf3/0x170 [ 59.776898][ T7157] ? sendmsg_copy_msghdr+0x160/0x160 [ 59.782204][ T7157] ? debug_object_active_state+0x260/0x350 [ 59.788021][ T7157] ? lock_downgrade+0x820/0x820 [ 59.792861][ T7157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.798670][ T7157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.804635][ T7157] ? trace_hardirqs_on+0x5f/0x220 [ 59.809649][ T7157] ? lockdep_hardirqs_on+0x6a/0xe0 [ 59.814763][ T7157] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 59.820571][ T7157] ? debug_object_active_state+0x260/0x350 [ 59.826376][ T7157] ? check_preemption_disabled+0x50/0x130 [ 59.832098][ T7157] ? __fget_light+0x215/0x280 [ 59.836772][ T7157] __sys_sendmsg+0xe5/0x1b0 [ 59.841273][ T7157] ? __sys_sendmsg_sock+0xb0/0xb0 [ 59.846338][ T7157] ? lock_is_held_type+0xb0/0xe0 [ 59.851280][ T7157] ? do_syscall_64+0x1c/0xe0 [ 59.855867][ T7157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.861835][ T7157] do_syscall_64+0x60/0xe0 [ 59.866251][ T7157] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.872135][ T7157] RIP: 0033:0x4452a9 [ 59.876035][ T7157] Code: Bad RIP value. [ 59.880103][ T7157] RSP: 002b:00007ffeb39380d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 59.888590][ T7157] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004452a9 [ 59.896563][ T7157] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 59.904562][ T7157] RBP: 000000000000e4f5 R08: 0000000000000000 R09: 00000000004002e0 [ 59.912534][ T7157] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402440 [ 59.920503][ T7157] R13: 00000000004024d0 R14: 0000000000000000 R15: 0000000000000000 [ 59.929568][ T7157] Kernel Offset: disabled [ 59.933910][ T7157] Rebooting in 86400 seconds..