DUID 00:04:ae:1e:d5:49:b7:3c:3f:84:b3:e9:d7:e4:a5:00:02:90 forked to background, child pid 3175 [ 27.017928][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.027663][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 76.192689][ T39] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.0.216' (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 program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 1061.802878][ T4430] ================================================================== [ 1061.811157][ T4430] BUG: KASAN: use-after-free in __nf_register_net_hook+0x77a/0x820 [ 1061.819239][ T4430] Read of size 2 at addr ffff88801c1a8000 by task syz-executor237/4430 [ 1061.827485][ T4430] [ 1061.829813][ T4430] CPU: 1 PID: 4430 Comm: syz-executor237 Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 [ 1061.840411][ T4430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 executing program executing program executing program executing program [ 1061.850486][ T4430] Call Trace: [ 1061.853775][ T4430] [ 1061.856722][ T4430] dump_stack_lvl+0xcd/0x134 [ 1061.861440][ T4430] print_address_description.constprop.0.cold+0x8d/0x336 [ 1061.868546][ T4430] ? __nf_register_net_hook+0x77a/0x820 [ 1061.874118][ T4430] ? __nf_register_net_hook+0x77a/0x820 [ 1061.879687][ T4430] kasan_report.cold+0x83/0xdf [ 1061.884484][ T4430] ? __nf_register_net_hook+0x77a/0x820 [ 1061.890059][ T4430] __nf_register_net_hook+0x77a/0x820 [ 1061.895494][ T4430] nf_register_net_hook+0x114/0x170 executing program executing program [ 1061.900718][ T4430] nf_register_net_hooks+0x59/0xc0 [ 1061.905855][ T4430] nf_synproxy_ipv6_init+0x85/0xe0 [ 1061.911051][ T4430] synproxy_tg6_check+0x30d/0x560 [ 1061.916194][ T4430] ? __mutex_unlock_slowpath+0x157/0x5e0 [ 1061.921941][ T4430] ? synproxy_tg6_destroy+0x370/0x370 [ 1061.927342][ T4430] xt_check_target+0x26c/0x9e0 [ 1061.932186][ T4430] ? textify_hooks.constprop.0+0x1a0/0x1a0 [ 1061.938024][ T4430] ? pcpu_alloc+0x12b/0x1360 [ 1061.942713][ T4430] ? xt_find_target+0x6e/0x280 [ 1061.947512][ T4430] find_check_entry.constprop.0+0x7f1/0x9e0 executing program executing program executing program executing program [ 1061.953428][ T4430] ? get_counters+0x5d0/0x5d0 [ 1061.958122][ T4430] ? kasan_quarantine_put+0xf5/0x210 [ 1061.963478][ T4430] ? lockdep_hardirqs_on+0x79/0x100 [ 1061.968924][ T4430] ? slab_free_freelist_hook+0x8b/0x1c0 [ 1061.974519][ T4430] ? kfree+0xd0/0x390 [ 1061.978521][ T4430] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 1061.984813][ T4430] translate_table+0xc8b/0x1750 [ 1061.989699][ T4430] ? ip6t_do_table+0x1a50/0x1a50 [ 1061.994661][ T4430] do_ip6t_set_ctl+0x56e/0xb90 executing program executing program executing program [ 1061.999448][ T4430] ? __mutex_lock+0x21a/0x12f0 [ 1062.004233][ T4430] ? compat_do_replace.constprop.0+0x470/0x470 [ 1062.010407][ T4430] ? wait_for_completion_io_timeout+0x20/0x20 [ 1062.016599][ T4430] ? nf_sockopt_find.constprop.0+0x22d/0x2a0 [ 1062.022605][ T4430] nf_setsockopt+0x83/0xe0 [ 1062.027045][ T4430] ipv6_setsockopt+0x122/0x180 [ 1062.031896][ T4430] rawv6_setsockopt+0xd3/0x6a0 [ 1062.036722][ T4430] ? aa_af_perm+0x230/0x230 [ 1062.041281][ T4430] ? rawv6_recvmsg+0xd70/0xd70 [ 1062.046075][ T4430] ? sock_common_setsockopt+0x2b/0x100 executing program executing program executing program [ 1062.051622][ T4430] __sys_setsockopt+0x2db/0x610 [ 1062.056544][ T4430] ? sock_common_recvmsg+0x1a0/0x1a0 [ 1062.061852][ T4430] ? __ia32_sys_recv+0x100/0x100 [ 1062.066807][ T4430] ? lock_downgrade+0x6e0/0x6e0 [ 1062.071706][ T4430] ? acct_account_cputime+0x19d/0x310 [ 1062.077165][ T4430] __x64_sys_setsockopt+0xba/0x150 [ 1062.082300][ T4430] ? syscall_enter_from_user_mode+0x21/0x70 [ 1062.088215][ T4430] do_syscall_64+0x35/0xb0 [ 1062.092668][ T4430] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 1062.098579][ T4430] RIP: 0033:0x7f65a1ace7d9 executing program executing program executing program executing program [ 1062.103004][ T4430] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 1062.122628][ T4430] RSP: 002b:00007f65a1a7f308 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 1062.131064][ T4430] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f65a1ace7d9 [ 1062.139050][ T4430] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 executing program executing program [ 1062.147040][ T4430] RBP: 00007f65a1b574c8 R08: 0000000000000001 R09: 0000000000000000 [ 1062.155029][ T4430] R10: 0000000020000000 R11: 0000000000000246 R12: 00007f65a1b55130 [ 1062.163032][ T4430] R13: 00007f65a1b574c0 R14: 00007f65a1b24090 R15: 0000000000022000 [ 1062.171035][ T4430] [ 1062.174072][ T4430] [ 1062.176401][ T4430] The buggy address belongs to the page: [ 1062.182035][ T4430] page:ffffea0000706a00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c1a8 [ 1062.192199][ T4430] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) executing program executing program executing program executing program [ 1062.199324][ T4430] raw: 00fff00000000000 ffffea0001c1b108 ffffea000046dd08 0000000000000000 [ 1062.207920][ T4430] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 1062.216513][ T4430] page dumped because: kasan: bad access detected [ 1062.222935][ T4430] page_owner tracks the page as freed [ 1062.228303][ T4430] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x52dc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_ZERO), pid 4430, ts 1061781545818, free_ts 1061791488993 [ 1062.246639][ T4430] get_page_from_freelist+0xa72/0x2f50 executing program executing program executing program [ 1062.252155][ T4430] __alloc_pages+0x1b2/0x500 [ 1062.256762][ T4430] kmalloc_large_node+0x62/0x130 [ 1062.261715][ T4430] __kmalloc_node+0x35a/0x4a0 [ 1062.266402][ T4430] kvmalloc_node+0x97/0x100 [ 1062.270924][ T4430] nf_hook_entries_grow+0x140/0x780 [ 1062.276137][ T4430] __nf_register_net_hook+0x144/0x820 [ 1062.281528][ T4430] nf_register_net_hook+0x114/0x170 [ 1062.286739][ T4430] nf_register_net_hooks+0x59/0xc0 [ 1062.291860][ T4430] nf_synproxy_ipv6_init+0x85/0xe0 [ 1062.296983][ T4430] synproxy_tg6_check+0x30d/0x560 executing program executing program executing program [ 1062.302023][ T4430] xt_check_target+0x26c/0x9e0 [ 1062.306806][ T4430] find_check_entry.constprop.0+0x7f1/0x9e0 [ 1062.312817][ T4430] translate_table+0xc8b/0x1750 [ 1062.317767][ T4430] do_ip6t_set_ctl+0x56e/0xb90 [ 1062.322549][ T4430] nf_setsockopt+0x83/0xe0 [ 1062.326981][ T4430] page last free stack trace: [ 1062.331653][ T4430] free_pcp_prepare+0x374/0x870 [ 1062.336516][ T4430] free_unref_page+0x19/0x690 [ 1062.341199][ T4430] kvfree+0x42/0x50 [ 1062.345016][ T4430] rcu_core+0x7b1/0x1820 [ 1062.349336][ T4430] __do_softirq+0x29b/0x9c2 executing program executing program executing program [ 1062.353854][ T4430] [ 1062.356176][ T4430] Memory state around the buggy address: [ 1062.361805][ T4430] ffff88801c1a7f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 1062.369873][ T4430] ffff88801c1a7f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 1062.377938][ T4430] >ffff88801c1a8000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 1062.386003][ T4430] ^ [ 1062.390079][ T4430] ffff88801c1a8080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff executing program executing program executing program executing program [ 1062.398156][ T4430] ffff88801c1a8100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 1062.406229][ T4430] ================================================================== [ 1062.414292][ T4430] Disabling lock debugging due to kernel taint [ 1062.430575][ T4430] Kernel panic - not syncing: panic_on_warn set ... [ 1062.437182][ T4430] CPU: 1 PID: 4430 Comm: syz-executor237 Tainted: G B 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 executing program [ 1062.449169][ T4430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1062.459316][ T4430] Call Trace: [ 1062.462598][ T4430] [ 1062.465531][ T4430] dump_stack_lvl+0xcd/0x134 [ 1062.470139][ T4430] panic+0x2b0/0x6dd [ 1062.474102][ T4430] ? __warn_printk+0xf3/0xf3 [ 1062.478715][ T4430] ? preempt_schedule_common+0x59/0xc0 [ 1062.484193][ T4430] ? __nf_register_net_hook+0x77a/0x820 [ 1062.489782][ T4430] ? preempt_schedule_thunk+0x16/0x18 [ 1062.495195][ T4430] ? trace_hardirqs_on+0x38/0x1c0 [ 1062.500248][ T4430] ? trace_hardirqs_on+0x51/0x1c0 executing program executing program [ 1062.505284][ T4430] ? __nf_register_net_hook+0x77a/0x820 [ 1062.510845][ T4430] ? __nf_register_net_hook+0x77a/0x820 [ 1062.516408][ T4430] end_report.cold+0x63/0x6f [ 1062.521101][ T4430] kasan_report.cold+0x71/0xdf [ 1062.525880][ T4430] ? __nf_register_net_hook+0x77a/0x820 [ 1062.531449][ T4430] __nf_register_net_hook+0x77a/0x820 [ 1062.536842][ T4430] nf_register_net_hook+0x114/0x170 [ 1062.542149][ T4430] nf_register_net_hooks+0x59/0xc0 [ 1062.547284][ T4430] nf_synproxy_ipv6_init+0x85/0xe0 executing program executing program executing program [ 1062.552406][ T4430] synproxy_tg6_check+0x30d/0x560 [ 1062.557450][ T4430] ? __mutex_unlock_slowpath+0x157/0x5e0 [ 1062.563105][ T4430] ? synproxy_tg6_destroy+0x370/0x370 [ 1062.568494][ T4430] xt_check_target+0x26c/0x9e0 [ 1062.573279][ T4430] ? textify_hooks.constprop.0+0x1a0/0x1a0 [ 1062.579104][ T4430] ? pcpu_alloc+0x12b/0x1360 [ 1062.583713][ T4430] ? xt_find_target+0x6e/0x280 [ 1062.588492][ T4430] find_check_entry.constprop.0+0x7f1/0x9e0 [ 1062.594412][ T4430] ? get_counters+0x5d0/0x5d0 [ 1062.599137][ T4430] ? kasan_quarantine_put+0xf5/0x210 executing program executing program [ 1062.604444][ T4430] ? lockdep_hardirqs_on+0x79/0x100 [ 1062.609667][ T4430] ? slab_free_freelist_hook+0x8b/0x1c0 [ 1062.615233][ T4430] ? kfree+0xd0/0x390 [ 1062.619232][ T4430] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 1062.625534][ T4430] translate_table+0xc8b/0x1750 [ 1062.630420][ T4430] ? ip6t_do_table+0x1a50/0x1a50 [ 1062.635501][ T4430] do_ip6t_set_ctl+0x56e/0xb90 [ 1062.640280][ T4430] ? __mutex_lock+0x21a/0x12f0 [ 1062.645061][ T4430] ? compat_do_replace.constprop.0+0x470/0x470 executing program executing program [ 1062.651243][ T4430] ? wait_for_completion_io_timeout+0x20/0x20 [ 1062.657340][ T4430] ? nf_sockopt_find.constprop.0+0x22d/0x2a0 [ 1062.663348][ T4430] nf_setsockopt+0x83/0xe0 [ 1062.667781][ T4430] ipv6_setsockopt+0x122/0x180 [ 1062.672564][ T4430] rawv6_setsockopt+0xd3/0x6a0 [ 1062.677355][ T4430] ? aa_af_perm+0x230/0x230 [ 1062.681872][ T4430] ? rawv6_recvmsg+0xd70/0xd70 [ 1062.686659][ T4430] ? sock_common_setsockopt+0x2b/0x100 [ 1062.692137][ T4430] __sys_setsockopt+0x2db/0x610 [ 1062.697026][ T4430] ? sock_common_recvmsg+0x1a0/0x1a0 executing program executing program executing program executing program [ 1062.702334][ T4430] ? __ia32_sys_recv+0x100/0x100 [ 1062.707296][ T4430] ? lock_downgrade+0x6e0/0x6e0 [ 1062.712162][ T4430] ? acct_account_cputime+0x19d/0x310 [ 1062.717557][ T4430] __x64_sys_setsockopt+0xba/0x150 [ 1062.722691][ T4430] ? syscall_enter_from_user_mode+0x21/0x70 [ 1062.728606][ T4430] do_syscall_64+0x35/0xb0 [ 1062.733043][ T4430] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 1062.738964][ T4430] RIP: 0033:0x7f65a1ace7d9 executing program [ 1062.743391][ T4430] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 1062.763044][ T4430] RSP: 002b:00007f65a1a7f308 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 1062.771477][ T4430] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f65a1ace7d9 [ 1062.779458][ T4430] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 [ 1062.787439][ T4430] RBP: 00007f65a1b574c8 R08: 0000000000000001 R09: 0000000000000000 [ 1062.795425][ T4430] R10: 0000000020000000 R11: 0000000000000246 R12: 00007f65a1b55130 [ 1062.803417][ T4430] R13: 00007f65a1b574c0 R14: 00007f65a1b24090 R15: 0000000000022000 [ 1062.811410][ T4430] [ 1062.814491][ T4430] Kernel Offset: disabled [ 1062.818814][ T4430] Rebooting in 86400 seconds..