Warning: Permanently added '10.128.0.125' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 60.082074][ T7042] IPVS: ftp: loaded support on port[0] = 21 [ 60.161007][ T7064] ================================================================== [ 60.169223][ T7064] BUG: KASAN: null-ptr-deref in choke_reset+0x208/0x340 [ 60.176149][ T7064] Write of size 8 at addr 0000000000000000 by task syz-executor387/7064 [ 60.184448][ T7064] [ 60.186766][ T7064] CPU: 1 PID: 7064 Comm: syz-executor387 Not tainted 5.7.0-rc1-syzkaller #0 [ 60.195415][ T7064] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.205451][ T7064] Call Trace: [ 60.208739][ T7064] dump_stack+0x188/0x20d [ 60.213053][ T7064] ? choke_reset+0x208/0x340 [ 60.217631][ T7064] __kasan_report.cold+0x5/0x4d [ 60.222479][ T7064] ? choke_reset+0x208/0x340 [ 60.227048][ T7064] ? choke_reset+0x208/0x340 [ 60.231634][ T7064] kasan_report+0x33/0x50 [ 60.235952][ T7064] check_memory_region+0x141/0x190 [ 60.241045][ T7064] memset+0x20/0x40 [ 60.244851][ T7064] choke_reset+0x208/0x340 [ 60.249257][ T7064] ? choke_destroy+0x40/0x40 [ 60.253845][ T7064] qdisc_destroy+0xe0/0x690 [ 60.258365][ T7064] qdisc_put+0xcd/0xe0 [ 60.262454][ T7064] notify_and_destroy+0x93/0xb0 [ 60.267311][ T7064] qdisc_graft+0xc85/0x1120 [ 60.271826][ T7064] ? tc_dump_tclass+0x480/0x480 [ 60.276684][ T7064] ? tc_get_qdisc+0xaf0/0xaf0 [ 60.281365][ T7064] ? nla_memcpy+0xa0/0xa0 [ 60.285899][ T7064] ? ns_capable_common+0xe2/0x100 [ 60.291024][ T7064] tc_modify_qdisc+0xbab/0x1a00 [ 60.295869][ T7064] ? qdisc_create+0x1140/0x1140 [ 60.300699][ T7064] ? mutex_trylock+0x2c0/0x2c0 [ 60.305472][ T7064] ? find_held_lock+0x2d/0x110 [ 60.310230][ T7064] ? qdisc_create+0x1140/0x1140 [ 60.315152][ T7064] rtnetlink_rcv_msg+0x44e/0xad0 [ 60.320086][ T7064] ? rtnl_bridge_getlink+0x870/0x870 [ 60.325356][ T7064] ? lock_acquire+0x1f2/0x8f0 [ 60.330029][ T7064] ? netlink_deliver_tap+0x146/0xb50 [ 60.335326][ T7064] netlink_rcv_skb+0x15a/0x410 [ 60.340128][ T7064] ? rtnl_bridge_getlink+0x870/0x870 [ 60.345421][ T7064] ? netlink_ack+0xa10/0xa10 [ 60.350283][ T7064] netlink_unicast+0x537/0x740 [ 60.355093][ T7064] ? netlink_attachskb+0x810/0x810 [ 60.360236][ T7064] ? _copy_from_iter_full+0x25c/0x870 [ 60.365614][ T7064] ? __phys_addr_symbol+0x2c/0x70 [ 60.370627][ T7064] ? __check_object_size+0x171/0x437 [ 60.376011][ T7064] netlink_sendmsg+0x882/0xe10 [ 60.380893][ T7064] ? aa_af_perm+0x260/0x260 [ 60.385385][ T7064] ? netlink_unicast+0x740/0x740 [ 60.390326][ T7064] ? netlink_unicast+0x740/0x740 [ 60.395254][ T7064] sock_sendmsg+0xcf/0x120 [ 60.399660][ T7064] ____sys_sendmsg+0x6bf/0x7e0 [ 60.404412][ T7064] ? print_usage_bug+0x240/0x240 [ 60.409333][ T7064] ? kernel_sendmsg+0x50/0x50 [ 60.413999][ T7064] ___sys_sendmsg+0x100/0x170 [ 60.418664][ T7064] ? sendmsg_copy_msghdr+0x70/0x70 [ 60.423774][ T7064] ? mark_held_locks+0xe0/0xe0 [ 60.428538][ T7064] ? __this_cpu_preempt_check+0x28/0x190 [ 60.434172][ T7064] ? percpu_counter_add_batch+0x123/0x180 [ 60.439927][ T7064] ? find_held_lock+0x2d/0x110 [ 60.445134][ T7064] ? __fd_install+0x1b4/0x600 [ 60.449825][ T7064] ? lock_downgrade+0x840/0x840 [ 60.454671][ T7064] ? __fget_light+0x1ab/0x270 [ 60.459355][ T7064] __sys_sendmsg+0xec/0x1b0 [ 60.463943][ T7064] ? __sys_sendmsg_sock+0xb0/0xb0 [ 60.468979][ T7064] ? trace_hardirqs_off_caller+0x55/0x230 [ 60.474692][ T7064] ? do_syscall_64+0x21/0x7d0 [ 60.479370][ T7064] do_syscall_64+0xf6/0x7d0 [ 60.483861][ T7064] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.489752][ T7064] RIP: 0033:0x441509 [ 60.493726][ T7064] Code: e8 5c ad 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 3b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 60.513356][ T7064] RSP: 002b:00007ffee27ebfc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.521757][ T7064] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441509 [ 60.529717][ T7064] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 [ 60.537782][ T7064] RBP: 00007ffee27ebfd0 R08: 0000000100000000 R09: 0000000100000000 [ 60.545780][ T7064] R10: 0000000100000000 R11: 0000000000000246 R12: 000000000000eadb [ 60.553752][ T7064] R13: 0000000000402460 R14: 0000000000000000 R15: 0000000000000000 [ 60.561750][ T7064] ================================================================== [ 60.569802][ T7064] Disabling lock debugging due to kernel taint [ 60.585454][ T7064] Kernel panic - not syncing: panic_on_warn set ... [ 60.592113][ T7064] CPU: 1 PID: 7064 Comm: syz-executor387 Tainted: G B 5.7.0-rc1-syzkaller #0 [ 60.602450][ T7064] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.612617][ T7064] Call Trace: [ 60.615931][ T7064] dump_stack+0x188/0x20d [ 60.620250][ T7064] panic+0x2e3/0x75c [ 60.624130][ T7064] ? add_taint.cold+0x16/0x16 [ 60.628796][ T7064] ? preempt_schedule_common+0x5e/0xc0 [ 60.634245][ T7064] ? choke_reset+0x208/0x340 [ 60.638833][ T7064] ? preempt_schedule_thunk+0x16/0x18 [ 60.644298][ T7064] ? trace_hardirqs_on+0x55/0x220 [ 60.649326][ T7064] ? choke_reset+0x208/0x340 [ 60.653975][ T7064] end_report+0x4d/0x53 [ 60.658114][ T7064] __kasan_report.cold+0xd/0x4d [ 60.662948][ T7064] ? choke_reset+0x208/0x340 [ 60.667563][ T7064] ? choke_reset+0x208/0x340 [ 60.672484][ T7064] kasan_report+0x33/0x50 [ 60.676822][ T7064] check_memory_region+0x141/0x190 [ 60.682055][ T7064] memset+0x20/0x40 [ 60.685854][ T7064] choke_reset+0x208/0x340 [ 60.690467][ T7064] ? choke_destroy+0x40/0x40 [ 60.695101][ T7064] qdisc_destroy+0xe0/0x690 [ 60.699606][ T7064] qdisc_put+0xcd/0xe0 [ 60.703805][ T7064] notify_and_destroy+0x93/0xb0 [ 60.708642][ T7064] qdisc_graft+0xc85/0x1120 [ 60.713303][ T7064] ? tc_dump_tclass+0x480/0x480 [ 60.718148][ T7064] ? tc_get_qdisc+0xaf0/0xaf0 [ 60.722817][ T7064] ? nla_memcpy+0xa0/0xa0 [ 60.727146][ T7064] ? ns_capable_common+0xe2/0x100 [ 60.732192][ T7064] tc_modify_qdisc+0xbab/0x1a00 [ 60.737051][ T7064] ? qdisc_create+0x1140/0x1140 [ 60.741885][ T7064] ? mutex_trylock+0x2c0/0x2c0 [ 60.746645][ T7064] ? find_held_lock+0x2d/0x110 [ 60.751405][ T7064] ? qdisc_create+0x1140/0x1140 [ 60.756249][ T7064] rtnetlink_rcv_msg+0x44e/0xad0 [ 60.761282][ T7064] ? rtnl_bridge_getlink+0x870/0x870 [ 60.766567][ T7064] ? lock_acquire+0x1f2/0x8f0 [ 60.771229][ T7064] ? netlink_deliver_tap+0x146/0xb50 [ 60.776643][ T7064] netlink_rcv_skb+0x15a/0x410 [ 60.781425][ T7064] ? rtnl_bridge_getlink+0x870/0x870 [ 60.786701][ T7064] ? netlink_ack+0xa10/0xa10 [ 60.791277][ T7064] netlink_unicast+0x537/0x740 [ 60.796023][ T7064] ? netlink_attachskb+0x810/0x810 [ 60.801113][ T7064] ? _copy_from_iter_full+0x25c/0x870 [ 60.806472][ T7064] ? __phys_addr_symbol+0x2c/0x70 [ 60.811498][ T7064] ? __check_object_size+0x171/0x437 [ 60.816790][ T7064] netlink_sendmsg+0x882/0xe10 [ 60.821604][ T7064] ? aa_af_perm+0x260/0x260 [ 60.826103][ T7064] ? netlink_unicast+0x740/0x740 [ 60.831026][ T7064] ? netlink_unicast+0x740/0x740 [ 60.835953][ T7064] sock_sendmsg+0xcf/0x120 [ 60.840487][ T7064] ____sys_sendmsg+0x6bf/0x7e0 [ 60.845291][ T7064] ? print_usage_bug+0x240/0x240 [ 60.850267][ T7064] ? kernel_sendmsg+0x50/0x50 [ 60.854989][ T7064] ___sys_sendmsg+0x100/0x170 [ 60.859702][ T7064] ? sendmsg_copy_msghdr+0x70/0x70 [ 60.864803][ T7064] ? mark_held_locks+0xe0/0xe0 [ 60.869572][ T7064] ? __this_cpu_preempt_check+0x28/0x190 [ 60.875195][ T7064] ? percpu_counter_add_batch+0x123/0x180 [ 60.885962][ T7064] ? find_held_lock+0x2d/0x110 [ 60.890830][ T7064] ? __fd_install+0x1b4/0x600 [ 60.895518][ T7064] ? lock_downgrade+0x840/0x840 [ 60.900369][ T7064] ? __fget_light+0x1ab/0x270 [ 60.905035][ T7064] __sys_sendmsg+0xec/0x1b0 [ 60.909600][ T7064] ? __sys_sendmsg_sock+0xb0/0xb0 [ 60.914607][ T7064] ? trace_hardirqs_off_caller+0x55/0x230 [ 60.920312][ T7064] ? do_syscall_64+0x21/0x7d0 [ 60.924983][ T7064] do_syscall_64+0xf6/0x7d0 [ 60.929492][ T7064] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.935412][ T7064] RIP: 0033:0x441509 [ 60.939352][ T7064] Code: e8 5c ad 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 3b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 60.959045][ T7064] RSP: 002b:00007ffee27ebfc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.968874][ T7064] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441509 [ 60.976886][ T7064] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 [ 60.984893][ T7064] RBP: 00007ffee27ebfd0 R08: 0000000100000000 R09: 0000000100000000 [ 60.992990][ T7064] R10: 0000000100000000 R11: 0000000000000246 R12: 000000000000eadb [ 61.001014][ T7064] R13: 0000000000402460 R14: 0000000000000000 R15: 0000000000000000 [ 61.010374][ T7064] Kernel Offset: disabled [ 61.014772][ T7064] Rebooting in 86400 seconds..