Warning: Permanently added '10.128.1.24' (ECDSA) to the list of known hosts.
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syzkaller login: [ 1494.021992] ==================================================================
[ 1494.029540] BUG: KASAN: use-after-free in hooks_validate+0x139/0x160
[ 1494.036046] Read of size 2 at addr ffff8880b0ce16c0 by task syz-executor644/8124
[ 1494.043580] 
[ 1494.045219] CPU: 1 PID: 8124 Comm: syz-executor644 Not tainted 4.19.211-syzkaller #0
[ 1494.053102] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1494.062472] Call Trace:
[ 1494.065072]  dump_stack+0x1fc/0x2ef
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[ 1494.068717]  print_address_description.cold+0x54/0x219
[ 1494.074042]  kasan_report_error.cold+0x8a/0x1b9
[ 1494.078721]  ? hooks_validate+0x139/0x160
[ 1494.082885]  __asan_report_load2_noabort+0x88/0x90
[ 1494.087831]  ? hooks_validate+0x139/0x160
[ 1494.091992]  hooks_validate+0x139/0x160
[ 1494.096030]  __nf_register_net_hook+0x1b0/0x480
[ 1494.100733]  nf_register_net_hooks+0x4c/0x190
[ 1494.105255]  synproxy_tg6_check+0x3c1/0x610
[ 1494.109586]  ? synproxy_recv_client_ack+0x11a0/0x11a0
[ 1494.114800]  xt_check_target+0x26c/0x650
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[ 1494.118876]  ? textify_hooks.constprop.0+0x1a0/0x1a0
[ 1494.124006]  ? wait_for_completion_io+0x10/0x10
[ 1494.128684]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[ 1494.133712]  ? pcpu_alloc+0xc9/0x1190
[ 1494.137543]  ? xt_find_target+0x6e/0x280
[ 1494.141627]  find_check_entry.constprop.0+0x7f1/0x9e0
[ 1494.146921]  ? do_add_counters+0x580/0x580
[ 1494.151279]  ? trace_hardirqs_off+0x64/0x200
[ 1494.155714]  ? kvfree+0x59/0x60
[ 1494.159037]  ? lockdep_hardirqs_on+0x3a8/0x5c0
[ 1494.163632]  translate_table+0xc46/0x16a0
[ 1494.167800]  ? cleanup_entry+0x340/0x340
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[ 1494.171893]  ? __might_fault+0x192/0x1d0
[ 1494.175966]  do_ip6t_set_ctl+0x29d/0x430
[ 1494.180032]  ? compat_do_ip6t_set_ctl+0x150/0x150
[ 1494.184899]  ? nf_sockopt_find.constprop.0+0x22d/0x2a0
[ 1494.190277]  nf_setsockopt+0x6f/0xc0
[ 1494.194003]  ipv6_setsockopt+0x103/0x160
[ 1494.198081]  rawv6_setsockopt+0x55/0x140
[ 1494.202150]  __sys_setsockopt+0x14d/0x240
[ 1494.206421]  ? kernel_accept+0x310/0x310
[ 1494.210498]  ? up_read+0x17/0x110
[ 1494.213978]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
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[ 1494.219441]  __x64_sys_setsockopt+0xba/0x150
[ 1494.223859]  ? lockdep_hardirqs_on+0x3a8/0x5c0
[ 1494.228451]  do_syscall_64+0xf9/0x620
[ 1494.232311]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1494.237501] RIP: 0033:0x7f5364a2f599
[ 1494.241220] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 18 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
[ 1494.260139] RSP: 002b:00007f53649d8208 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
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[ 1494.267852] RAX: ffffffffffffffda RBX: 0000000000000020 RCX: 00007f5364a2f599
[ 1494.275134] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003
[ 1494.282495] RBP: 00007f5364ab14a0 R08: 0000000000000001 R09: 00007f5364ab14a8
[ 1494.289775] R10: 0000000020000000 R11: 0000000000000246 R12: 00007f5364ab14ac
[ 1494.297050] R13: 00007ffe160d3b2f R14: 00007f53649d8300 R15: 0000000000022000
[ 1494.304335] 
[ 1494.305961] Allocated by task 8124:
[ 1494.309596]  __kmalloc_node+0x4c/0x70
[ 1494.313429]  kvmalloc_node+0x61/0xf0
[ 1494.317156]  nf_hook_entries_grow+0x140/0x780
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[ 1494.321700]  __nf_register_net_hook+0x15a/0x480
[ 1494.326390]  nf_register_net_hooks+0x4c/0x190
[ 1494.330911]  synproxy_tg6_check+0x3c1/0x610
[ 1494.335333]  xt_check_target+0x26c/0x650
[ 1494.339400]  find_check_entry.constprop.0+0x7f1/0x9e0
[ 1494.344591]  translate_table+0xc46/0x16a0
[ 1494.348747]  do_ip6t_set_ctl+0x29d/0x430
[ 1494.352815]  nf_setsockopt+0x6f/0xc0
[ 1494.356536]  ipv6_setsockopt+0x103/0x160
[ 1494.360601]  rawv6_setsockopt+0x55/0x140
[ 1494.364663]  __sys_setsockopt+0x14d/0x240
[ 1494.368826]  __x64_sys_setsockopt+0xba/0x150
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[ 1494.373240]  do_syscall_64+0xf9/0x620
[ 1494.377048]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1494.382234] 
[ 1494.383863] Freed by task 8118:
[ 1494.387147]  kfree+0xcc/0x210
[ 1494.390254]  kvfree+0x59/0x60
[ 1494.393363]  rcu_process_callbacks+0x8ff/0x18b0
[ 1494.398034]  __do_softirq+0x265/0x980
[ 1494.401836] 
[ 1494.403473] The buggy address belongs to the object at ffff8880b0ce16c0
[ 1494.403473]  which belongs to the cache kmalloc-1024 of size 1024
[ 1494.416313] The buggy address is located 0 bytes inside of
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[ 1494.416313]  1024-byte region [ffff8880b0ce16c0, ffff8880b0ce1ac0)
[ 1494.428117] The buggy address belongs to the page:
[ 1494.433057] page:ffffea0002c33800 count:1 mapcount:0 mapping:ffff88813bff0ac0 index:0x0 compound_mapcount: 0
[ 1494.443033] flags: 0xfff00000008100(slab|head)
[ 1494.447620] raw: 00fff00000008100 ffffea0002c5be88 ffffea0002c38b88 ffff88813bff0ac0
[ 1494.455520] raw: 0000000000000000 ffff8880b0ce0040 0000000100000007 0000000000000000
[ 1494.463505] page dumped because: kasan: bad access detected
[ 1494.469217] 
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[ 1494.470843] Memory state around the buggy address:
[ 1494.475783]  ffff8880b0ce1580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 1494.483242]  ffff8880b0ce1600: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 1494.490629] >ffff8880b0ce1680: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
[ 1494.497985]                                            ^
[ 1494.503447]  ffff8880b0ce1700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 1494.510815]  ffff8880b0ce1780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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[ 1494.518175] ==================================================================
[ 1494.525529] Disabling lock debugging due to kernel taint
[ 1494.536261] Kernel panic - not syncing: panic_on_warn set ...
[ 1494.536261] 
[ 1494.543643] CPU: 1 PID: 8124 Comm: syz-executor644 Tainted: G    B             4.19.211-syzkaller #0
[ 1494.552951] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1494.562303] Call Trace:
[ 1494.564985]  dump_stack+0x1fc/0x2ef
[ 1494.568656]  panic+0x26a/0x50e
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[ 1494.571857]  ? __warn_printk+0xf3/0xf3
[ 1494.575753]  ? preempt_schedule_common+0x45/0xc0
[ 1494.580518]  ? ___preempt_schedule+0x16/0x18
[ 1494.584936]  ? trace_hardirqs_on+0x55/0x210
[ 1494.589271]  kasan_end_report+0x43/0x49
[ 1494.593250]  kasan_report_error.cold+0xa7/0x1b9
[ 1494.597935]  ? hooks_validate+0x139/0x160
[ 1494.602270]  __asan_report_load2_noabort+0x88/0x90
[ 1494.607306]  ? hooks_validate+0x139/0x160
[ 1494.611466]  hooks_validate+0x139/0x160
[ 1494.615544]  __nf_register_net_hook+0x1b0/0x480
[ 1494.620233]  nf_register_net_hooks+0x4c/0x190
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[ 1494.624732]  synproxy_tg6_check+0x3c1/0x610
[ 1494.629056]  ? synproxy_recv_client_ack+0x11a0/0x11a0
[ 1494.634266]  xt_check_target+0x26c/0x650
[ 1494.638329]  ? textify_hooks.constprop.0+0x1a0/0x1a0
[ 1494.643438]  ? wait_for_completion_io+0x10/0x10
[ 1494.648114]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[ 1494.653229]  ? pcpu_alloc+0xc9/0x1190
[ 1494.657045]  ? xt_find_target+0x6e/0x280
[ 1494.661133]  find_check_entry.constprop.0+0x7f1/0x9e0
[ 1494.666338]  ? do_add_counters+0x580/0x580
[ 1494.670579]  ? trace_hardirqs_off+0x64/0x200
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[ 1494.675000]  ? kvfree+0x59/0x60
[ 1494.678286]  ? lockdep_hardirqs_on+0x3a8/0x5c0
[ 1494.682872]  translate_table+0xc46/0x16a0
[ 1494.687225]  ? cleanup_entry+0x340/0x340
[ 1494.691287]  ? __might_fault+0x192/0x1d0
[ 1494.695369]  do_ip6t_set_ctl+0x29d/0x430
[ 1494.699452]  ? compat_do_ip6t_set_ctl+0x150/0x150
[ 1494.704327]  ? nf_sockopt_find.constprop.0+0x22d/0x2a0
[ 1494.709624]  nf_setsockopt+0x6f/0xc0
[ 1494.713364]  ipv6_setsockopt+0x103/0x160
[ 1494.717453]  rawv6_setsockopt+0x55/0x140
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[ 1494.721560]  __sys_setsockopt+0x14d/0x240
[ 1494.725727]  ? kernel_accept+0x310/0x310
[ 1494.729827]  ? up_read+0x17/0x110
[ 1494.733303]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[ 1494.738706]  __x64_sys_setsockopt+0xba/0x150
[ 1494.743132]  ? lockdep_hardirqs_on+0x3a8/0x5c0
[ 1494.747715]  do_syscall_64+0xf9/0x620
[ 1494.751522]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1494.756724] RIP: 0033:0x7f5364a2f599
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[ 1494.760438] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 18 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
[ 1494.779348] RSP: 002b:00007f53649d8208 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1494.787069] RAX: ffffffffffffffda RBX: 0000000000000020 RCX: 00007f5364a2f599
[ 1494.794352] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003
[ 1494.801708] RBP: 00007f5364ab14a0 R08: 0000000000000001 R09: 00007f5364ab14a8
[ 1494.808991] R10: 0000000020000000 R11: 0000000000000246 R12: 00007f5364ab14ac
[ 1494.816352] R13: 00007ffe160d3b2f R14: 00007f53649d8300 R15: 0000000000022000
[ 1494.823839] Kernel Offset: disabled
[ 1494.827453] Rebooting in 86400 seconds..