kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 14567 Comm: syz-executor.3 Not tainted 5.0.0+ #98 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__x86_indirect_thunk_rax+0x10/0x20 arch/x86/lib/retpoline.S:32 Code: ff 48 8d 0c ca e9 de a7 cc ff bb f2 ff ff ff 45 30 ff e9 84 ac cc ff 90 90 90 e8 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 04 24 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 RSP: 0018:ffff88808faef5b8 EFLAGS: 00010246 RAX: 000080fe00000000 RBX: ffff888094cd3cf4 RCX: ffffc9000c8a8000 RDX: 1ffff1101299a7a3 RSI: ffffffff860e9608 RDI: ffff888084f10d00 RBP: ffff88808faef5f0 R08: ffff8880a40a2340 R09: 0000000000000003 R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: ffff888084f10d00 R13: 0000000000000000 R14: ffff888084f10d58 R15: 0000000000000000 FS: 00007f6aa3000700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6aa2fdedb8 CR3: 000000004d7fd000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ipv6_rcv+0x10e/0x420 net/ipv6/ip6_input.c:272 __netif_receive_skb_one_core+0x115/0x1a0 net/core/dev.c:4973 __netif_receive_skb+0x2c/0x1c0 net/core/dev.c:5083 netif_receive_skb_internal+0x117/0x660 net/core/dev.c:5186 napi_frags_finish net/core/dev.c:5753 [inline] napi_gro_frags+0xade/0xd10 net/core/dev.c:5827 tun_get_user+0x2c17/0x3d70 drivers/net/tun.c:1974 tun_chr_write_iter+0xbd/0x160 drivers/net/tun.c:2019 call_write_iter include/linux/fs.h:1863 [inline] do_iter_readv_writev+0x5e1/0x8e0 fs/read_write.c:680 do_iter_write fs/read_write.c:956 [inline] do_iter_write+0x184/0x610 fs/read_write.c:937 vfs_writev+0x1b3/0x2f0 fs/read_write.c:1001 do_writev+0xf6/0x290 fs/read_write.c:1036 __do_sys_writev fs/read_write.c:1109 [inline] __se_sys_writev fs/read_write.c:1106 [inline] __x64_sys_writev+0x75/0xb0 fs/read_write.c:1106 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f31 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 e4 b9 fb ff c3 48 83 ec 08 e8 1a 2d 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 63 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f6aa2fffba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 000000000000004a RCX: 0000000000457f31 RDX: 0000000000000001 RSI: 00007f6aa2fffbf0 RDI: 00000000000000f0 RBP: 0000000020000100 R08: 00000000000000f0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f6aa30006d4 R13: 00000000004c6681 R14: 00000000004dbb60 R15: 00000000ffffffff Modules linked in: ---[ end trace 30346640a68fc31c ]--- RIP: 0010:__x86_indirect_thunk_rax+0x10/0x20 arch/x86/lib/retpoline.S:32 Code: ff 48 8d 0c ca e9 de a7 cc ff bb f2 ff ff ff 45 30 ff e9 84 ac cc ff 90 90 90 e8 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 04 24 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 RSP: 0018:ffff88808faef5b8 EFLAGS: 00010246 RAX: 000080fe00000000 RBX: ffff888094cd3cf4 RCX: ffffc9000c8a8000 RDX: 1ffff1101299a7a3 RSI: ffffffff860e9608 RDI: ffff888084f10d00 RBP: ffff88808faef5f0 R08: ffff8880a40a2340 R09: 0000000000000003 R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: ffff888084f10d00 R13: 0000000000000000 R14: ffff888084f10d58 R15: 0000000000000000 FS: 00007f6aa3000700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6aa2fdedb8 CR3: 000000004d7fd000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400